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Page 1
® Owner’s Manual…
Page 2
5. The foregoing is in lieu of all other warranties, expressed or implied, and dbx neither assumes nor authorizes any person to assume on its behalf any obligation or liability in connection with the sale of this product. In no event shall dbx or its dealers be liable for special or consequential damages or from any delay in the performance of this warranty due to causes beyond their control.
Page 3: Table Of Contents

Initialize With Mutes On ��47 Front Panel �� 4 System Lockout ��48 Rear Panel �� 6 Factory Reset ��49 Installing The DriveRack PA2 �� 8 Soft Reset ��49 Installation Recommendations �� 8 Application Guide ��50 Making Connections �� 8 Full Range Application 1 (Standard) ��50 Audio Connections��…
Page 4: Overview

Building upon the same great features that made the DriveRack PX, PA, and PA+ so popular, the DriveRack PA2 adds the latest advancements in dbx’s proprietary AutoEQ™ and AFS ™…
Page 5: Features

• Easy-To-Read LCD Display • Storage Memory Locations For Up To 75 User Presets • Various Speaker & Amplifier Tunings Included • Network Control Via The Free DriveRack PA2 Control Application For iOS , Android™, Mac , & Windows Compatible ®…
Page 6: User Interface & Connectors �� 4 Power-Up Functions

1. RTA MIC INPUT Connect the dbx RTA-M measurement microphone (sold separately) to this balanced XLR input jack for easy calibration of your sound system using the built-in Wizards or for use with the RTA. This jack supplies +15V phantom power.
Page 7
LEDs feature a peak hold function, so they will remain lit for a short period of time after the signal level drops back below the clip point. The dbx Type IV™ conversion system built into the PA2 will clamp down on excessively loud input signals and prevent the A/D converters from clipping.
Page 8: Rear Panel

120V 50/60Hz 1. IEC AC Power Inlet Connect the included IEC power cord to this power inlet. The DriveRack PA2 ships from the factory configured for one of two specified power voltage ranges, they are: • 100-120V, 50Hz/60Hz • 220-240V, 50Hz/60Hz…
Page 9
® 6. Input Switches These switches are recessed to prevent accidental switching. You may need to use the tip of your fingernail or an object with a pointy tip, such as a pen, to activate these switches. • +4dBu/-10dBv Switch This switch sets the PA2’s input sensitivity.
Page 10: Installing The Driverack Pa2

Connect the PA2’s outputs to the designated amplifier or powered speaker inputs. 4� If you plan to calibrate the system using the built-in Wizards, connect the optional dbx RTA-M measurement microphone 5� using a microphone cable of suitable length and place it in a microphone stand.
Page 11: Network Connections �� 9 Full Range Application 2 (Sub-Satellite System)

Make sure the network switch or router is powered on 5� Computer and fully booted then power on the DriveRack PA2. See ‘Applying Power’ on page 10 for further information Wired Ethernet Router on properly powering on the PA2. If the PA2 is already…
Page 12: Applying Power

® Applying Power Ensure your power amplifiers or powered speakers are turned off. 1� Make sure the included IEC power cable provided with your PA2 has the proper connector for connection to your 2� AC power outlet and that the power screening under the IEC power inlet on the back panel of the PA2 matches your country’s voltage requirements.
Page 13: Getting Started

® Getting Started Menu Navigation Overview The DriveRack PA2’s user interface was carefully designed to provide logical navigation and avoid deeply nested menus. The menu navigation is laid out as shown in the below diagram. HOME MODE Press RTA Button…
Page 14: Operating Modes Explained

Home Mode This is the default operating mode. It is the mode the DriveRack PA2 enters when it initially boots and is the mode which displays the selected home screen. From any menu, you can get back to Home mode by repeatedly pressing the button.
Page 15: The Home Screens

The Home Screens The home screen is the first screen which appears in the LCD display after the DriveRack PA2 fully initializes (this is also referred to as “Home mode”). There are four home screens to choose from, providing the instant visual feedback you need, when you need it.
Page 16: Configuring The Driverack Pa2

Configuring The DriveRack PA2 This section of the manual describes how to configure the DriveRack PA2 for your application. The easiest way to configure the PA2 is to use the built-in Wizards. However, for the veteran sound engineers and DriveRack power users, the PA2 can also be configured and tweaked manually.
Page 17
® RUN AutoEQ/LEVEL ASSIST Level Assist/AutoEQ Mic Position 1 AutoEQ Mic Position 2 When used with the optional dbx RTA-M Left Speaker Right Speaker Left Speaker Right Speaker measurement microphone, this Wizard helps you balance the left/right speaker levels, the low/mid/high speaker levels Speakers &…
Page 18
[dbx RTA-M, FLAT] MIC RESPONSE When the dbx RTA-M option is selected, AutoEQ will automatically compensate for the frequency response of the dbx RTA-M microphone, providing more accurate AutoEQ results. Select the FLAT option if using a measurement microphone other than the dbx RTA-M.
Page 19: About Speaker & Amplifier Tunings

® available in the PA2’s preset tuning list, you can use the DriveRack PA2 control app to access the online database where you can find additional tunings. If you can’t find tunings for your particular speakers or amplifiers, you will need to select the NOT LISTED option in the PA2’s Setup Wizard.
Page 20: Manual System Optimization Tips

® Manual System Optimization Tips TIP: You may want to disable the TIME OUT feature located in the Utility menu before performing any of the following system optimization procedures. This will ensure the PA2 does not revert back to the home screen throughout the process. See ‘Utility’…
Page 21: Set Gain Structure & Limiters

® The PA2’s output POLARITY parameter (located in the crossover) is used to match polarity between drivers. Some multi-way main speakers will require certain drivers to be polarity inverted when operating in bi-amped mode (bypassing the internal passive crossover network). When selecting any bi-ampable main speaker from the PA2’s speaker tuning list in the Setup Wizard, such polarity inversion will be performed for you automatically.
Page 22
® your system to its fullest potential and could potentially cause damage to your loudspeakers. When you select your amplifiers in the Setup Wizard, the PA2 will automatically set the limiter thresholds and gain structure between the PA2 and amplifiers. If your amplifiers are not available in the Setup Wizard, you should choose the NOT LISTED option.
Page 23
3� ‘Rear Panel’ on page 6 for more information on this switch. Now, turn the mixer, DriveRack PA2, and amplifiers back on. Go into the PA2’s output limiters and ensure they are 4� all turned OFF, OVEREASY is set to OFF, and their THRESHOLD’s are set all the way up to 0.0 dB. Also, turn off all non-essential PA2 processing if it is enabled (i.e., Compressor, GEQ, Subharmonic Synth, and AFS).
Page 24: Balance The System’s Frequency Response

EQ, which translates to smaller gain adjustments in the EQ and better sound quality. You can perform this procedure while listening to your reference music and do it by ear or use the dbx RTA-M reference mic and RTA. The music you choose to use for reference should contain full-bandwidth audio and should be something you have spent much time listening to and are extremely familiar with.
Page 25: Ring Out The System With Afs

® 6. Ring Out The System With AFS Ringing out the sound system for feedback before use allows you to squeeze a little more gain out of the system before the onset of feedback and can help ensure you’re not right at the edge of feedback during the performance. The AFS Wizard does a great job of taking the guesswork out of ringing out the sound system for feedback.
Page 26: Operating The Driverack Pa2

® Operating The DriveRack PA2 This section of the manual describes how to operate the DriveRack PA2 after you have initially configured and optimized the system using the Wizards. This includes editing parameters and managing presets. Editing Parameters To edit a processing module’s parameters: Press the module’s button (e.g.,…
Page 27: Managing Presets

® Managing Presets The DriveRack PA2 has two types of presets: user and factory. The user presets occupy preset memory locations1–75. The factory presets occupy preset memory locations 76–100. The difference between these preset types is that factory presets are meant to be used as templates and cannot be overwritten and user presets can be overwritten and are designed to store your custom presets.
Page 28: Storing Presets

® Storing Presets When you are satisfied with the changes made to a factory or user preset, you can store the changes to a user preset memory location. The STORE button is used to store modifications made to a preset. To store a preset: Press the button.
Page 29: The Pa2 Processing Modules & Parameters

® The PA2 Processing Modules & Parameters This section of the manual provides descriptions of all the processing modules available in the DriveRack PA2 and their associated parameters. Graphic EQ (GEQ) The 31-band GEQ module lets you manually tune the sound system’s frequency response and is meant to be used alone or alongside the AutoEQ PEQ (which is set when you run the AutoEQ Wizard).
Page 30
® • MYBAND This option is optimized for live music performance using a portable PA system in small to medium sized venues (coffee shops, clubs, etc.). It offers some low-end boost along with low-mid cut, which enhances the low end while preventing the system from sounding too muddy.
Page 31: Parametric Eq (Autoeq, High, Mid, Low Peq)

® Parametric EQ (AutoEQ, HIGH, MID, LOW PEQ) There are two types of PEQs available in the PA2: the AutoEQ PEQ and the output PEQs (labeled LOW, MID, and HIGH). The AutoEQ PEQ is an 8-band parametric EQ which resides in the input processing side of the PA2 (pre crossover) and is automatically adjusted by the built-in AutoEQ Wizard.
Page 32
® • [20 Hz – 20 kHz] BAND(1–8) FREQUENCY This parameter adjusts the center/cutoff frequency of the selected EQ band. • [-12 dB – +12 dB] BAND(1–8) GAIN This parameter adjusts the gain of the selected EQ band. • [0.1 – 15.909] BAND(1–8) Q This parameter is only available with BELL type filters and adjusts the width of the selected PEQ filter.
Page 33: Advanced Feedback Suppression (Afs)

Suppression) algorithm to help combat this dreadful phenomenon. The AFS algorithm in the PA2 is a little different than the AFS algorithm used in any previous dbx products. That’s because the dbx engineers revisited the already-stellar AFS algorithm to see if they could improve it. And guess what? They did! The updated AFS algorithm in the PA2 can now detect and eliminate feedback faster than ever before and with even higher precision.
Page 34
® TIP: AFS works best when the signal entering the PA2’s inputs is sufficient. This requires proper gain staging between the mixer and PA2. If the signal level is too low, AFS may be slow to respond to feedback. See ‘Manual System Optimization Tips’…
Page 35
® begin to round robin – meaning that if all Live filters have been set and new feedback occurs, the first Live filter set will be released then re-set at the new feedback frequency location. The Live filters can be set to release after a period of time by enabling the LIVE LIFT option and adjusting the LIFT AFTER parameter.
Page 36
® TIP: Since it’s not really possible to predict exactly how many Fixed filters you may need, a good setting to start with is the default setting of 6. If after ringing out the system, you feel you need to squeeze a little more gain out of the system before feedback, you can increase the FIXED FILTERS setting and run the AFS Wizard again or manually ring out only the newly added Fixed filters in the AFS menu.
Page 37: Subharmonic Synthesis (Sub)

® Subharmonic Synthesis (SUB) dbx’s subharmonic synthesis (or sub-synth) processing has been specifically optimized to enhance the low frequencies in audio material and was designed for use in a variety of professional audio applications, including nightclub and dance DJ mixing, theatre and film sound, sound design, music recording, live music performance, and broadcasting. Using traditional EQ to enhance this extremely low frequency region can increase noise potential and stage rumble (low-frequency feedback) in live PA systems.
Page 38
® NOTE: If you experience low-frequency artifacts on a voice when using subharmonic synthesis, try engaging a high-pass filter, using EQ, or a combination thereof on the vocal’s mixer channel to reduce the artifacts. If a high-pass filter and EQ are not enough, try lowering the overall amount of Subharmonic Synthesis applied to the signal by adjusting the SUBHARMONICS parameter.
Page 39: Compressor (Comp)

® Compressor (COMP) A compressor is used to compress the dynamic range of the audio signal, bringing up the lower-level portions of the signal and restricting the higher-level portions of the signal. In live sound applications, it is common to compress the audio at different stages in the signal chain.
Page 40
® a 2:1 ratio would allow the output signal level to increase by only 1 dB for every 2 dB of level increase over threshold. In other words, 1 dB of compression will be applied for every 2 dB increase in level above threshold. For light compression, choose a lower ratio.
Page 41: Delay

® Delay There are two different delay module types available in the PA2: the input (also known as pre or backline) delay module and the output (also known as driver alignment) delay module. The output delay modules (labelled HIGH, MID, and LOW) are used to time align loudspeaker drivers which require it. Typically, driver alignment delay is only required when configuring a bi-amplified (2-way) or tri-amplified (3-way) system.
Page 42
® also see a LOW OUTPUT DELAY. If you’ve configured a 3-way system, you will see an additional MID OUTPUT DELAY. Turn and press the wheel to select the desired delay module. Turn the wheel to scroll through the list of parameters. DATA DATA Press the…
Page 43: Crossover (Xover)

® Crossover (XOVER) A crossover is used to divide the broadband signal into separate frequency bands. This allows each loudspeaker or driver in a sound system to be operated within its optimal frequency range. Using an active crossover, like that in the PA2, has the additional benefits of increasing the efficiency of your power amplifiers, lowering intermodulation distortion, and in some cases, improving the drivers’…
Page 44
® dB increase in level will be created at the crossover frequency. LR stands for Linkwitz-Riley. When two Linkwitz-Riley filters are summed, there is no increase in level around the crossover frequency, which makes these type of filters very popular. The numbers next to each option represent the filter slope rate in decibels per octave.
Page 45: Limiter

If tunings aren’t listed for your amplifiers, check the ever-growing online database using the DriveRack PA2 control app to see if they’ve been added. If tunings cannot be found for your amps, select the NOT LISTED option.
Page 46
® L O W L I M I T E R • [-60 dB to 0 dB] THRESHOLD M I D L I M I T E R THRESHOLD INDICATOR This parameter sets the level at which the limiter will begin limiting the signal. The H I G H L I M I T E limiter’s Threshold Indicators (shown to the right) indicate when signal is below L O W L I M I T E R…
Page 47: Rta

® The 31-band RTA (Real-Time Analyzer) module allows you to monitor frequency levels. This information can help with identifying system issues – such as improperly set crossover settings, blown drivers, or driver/speaker dependent level issues. It can also be used when manually tuning the sound system. RTA Parameters The RTA menu can be accessed by pressing the button.
Page 48: Utility

Security feature. When enabled, the PA2 will require a password before it can be controlled over a network using the DriveRack PA2 control app. Follow the on-screen instructions to edit the password. Changing the password back to ‘administrator’ will disable the Security feature.
Page 49: Initialize With Mutes

Power-Up Functions Power-up functions allow you to reset DriveRack PA2 presets and settings, lock out the front-panel controls, and configure the PA2 to always power up with the output mutes enabled. These power-up functions are accessed by pressing and holding certain buttons upon power-up.
Page 50: System Lockout

® System Lockout This power-up function locks out the PA2’s front-panel controls to prevent unauthorized tampering. The following options are available: • System Unlocked This is the default setting and allows access to all PA2 functions from the front-panel controls. •…
Page 51: Factory Reset

3� WIZARD STORE Soft Reset The Soft Reset function resets all Utility settings in the DriveRack PA2 back to their factory default state without resetting user presets. To perform a Soft Reset: Power down the DriveRack PA2. 1�…
Page 52: Application Guide

• In the Setup Wizard, select your main speakers from the list. If prompted, select the PASSIVE option for your main speaker configuration. If your speakers are not listed in the PA2, use the DriveRack PA2 control app to check the online database to see if your speaker tunings have been added.
Page 53
If the PA2 does not contain tunings for your speakers and you are unable to download them from the online database using the DriveRack PA2 control app, it is recommended that you configure the system as shown in the following system diagram.
Page 54: Full Range Application 3 (All Outputs Full Range)

® Full Range Application 3 (All Outputs Full Range) Some full range systems may require more than two full range outputs from the PA2. The PA2 can accommodate these systems as well, but such systems are atypical and cannot be properly configured using the PA2’s Setup Wizard alone. Typically, you can parallel your amps or powered speakers in such a system and just use a pair of outputs from the PA2 to feed the system –…
Page 55: 2-Way Application

2WAY main speaker configuration option when prompted. If your speakers are not listed in the PA2, use the DriveRack PA2 control app to check the online database to see if your speaker tunings have been added.
Page 56: 3-Way Application

• In the Setup Wizard, select your main and sub speakers from the list. When prompted, select the 2-WAY main speaker configuration option. If your speakers are not listed in the PA2, use the DriveRack PA2 control app to check the online database to see if your speaker tunings have been added.
Page 57: Preset List

® Preset List User Preset # Factory Preset # Name Description 1, 26, 51 ST.Full Range Stereo Full Range 2, 27, 52 M.FullRange Mono Full Range 3, 28, 53 ST.2WaywST.Sub Stereo 2-Way with Stereo Subs 4, 29, 54 ST.2WaywM.Sub Stereo 2-Way with Mono Sub 5, 30, 55 M.2WaywST.Sub Mono 2-Way with Stereo Subs…
Page 58: Driverack Pa2 Control Application

, Google Play™, or from www.dbxpro.com. ® The DriveRack PA2 control application can be used to perform most of the same functions available from the DriveRack PA2’s front panel, this includes running all Wizards, viewing the RTA, editing system and processing parameters, and managing presets.
Page 59: Networking

4. If the PA2’s IP address reads “0.0.0.0”, power cycle the PA2 (ensure your amplifiers are off) then check the IP address again. If the PA2 now has an IP address, see if you can connect using the DriveRack PA2 control app. If the PA2 still…
Page 60
If this fixes the problem, refer to your firewall manufacturer’s documentation on how to reconfigure your firewall to allow the DriveRack PA2 control app, or ports 19272 (TCP and UDP) and port 21 (FTP), to pass through the…
Page 61: Technical Information

Firmware Update Utility application will be available on the PA2 product page at dbxpro.com. If using the DriveRack PA2 control app, you can update the PA2 via the Ethernet port straight from the application, regardless of the device you’re using for control (i.e., iOS…
Page 62: Dsp Block Diagram

® DSP Block Diagram Mute Mute Mute Mute Mute Mute Alignment Delay Alignment Delay Alignment Delay PeakPlus Limiter PeakPlus Limiter PeakPlus Limiter 8-Band PEQ 8-Band PEQ 8-Band PEQ Crossover w/Polarity Pre Delay Compressor Subharmonic Syntesizer Advanced Feedback Suppression AutoEQ 8-Band PEQ Real Time Analyzer (RTA) 31-Band Graphic Equalizer…
Page 63: Cable Diagrams

® Cable Diagrams Ethernet Cable Diagrams Straight-Through Use straight-through CAT5, CAT5e, or CAT6 Ethernet cables to connect the PA2 to your network switch/router. The below diagrams show the pinout of such cables. These are the most common type of Ethernet cables available. TIA/EIA 568A Straight-Through TIA/EIA 568B Straight-Through RJ-45…
Page 64: Audio Cable Diagrams

® Audio Cable Diagrams TO NEXT DEVICE (INPUT) TO NEXT DEVICE (INPUT) FROM SOURCE DEVICE (OUTPUT) FROM SOURCE DEVICE (OUTPUT) TO NEXT DEVICE (INPUT) TO NEXT DEVICE (INPUT) FROM SOURCE DEVICE (OUTPUT) TO NEXT DEVICE (INPUT) FROM SOURCE DEVICE (OUTPUT) TO NEXT DEVICE (INPUT) FROM SOURCE DEVICE (OUTPUT) FROM SOURCE DEVICE (OUTPUT)
Page 65: Dimensions

® Dimensions…
Page 66: Specifications

Alignment Delay: Up to 10ms per output channel pair A/D PERFORMANCE A/D Converter: 24-bit with dbx Type IV™ Conversion System A/D Dynamic Range: 112 dB A-weighted, 110 dB unweighted Type IV Dynamic Range: 123 dB with transient material, A-weighted, 22kHz BW;…
Page 67: Additional Resources

® Additional Resources dbx Website http://www.dbxpro.com DriveRack PA2 Product Page http://www.dbxpro.com/en-US/products/driverack-pa2 dbx Support http://www.dbxpro.com/en-US/support dbx User’s Forum http://www.dbxpro.com/forum…
Page 68
Phone: (801) 566-8800 Website: dbxpro.com Support: dbxpro.com/en-US/support dbx Professional Products is a registered trademark of Harman © 2015 Harman All rights reserved DriverRack PA2 Owner’s Manual ® PN: 5044138-B Macintosh, iOS, iPhone, iPad, iTunes, and iTunes Store are trademarks of Apple Computer Incorporated, registered in the U.S.

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Summary of Contents for dbx DriveRack PA2

Page 1
® Owner’s Manual…
Page 2: Important Safety Instructions

IMPORTANT SAFETY INSTRUCTIONS WARNING FOR YOUR PROTECTION READ THE FOLLOWING: KEEP THESE INSTRUCTIONS HEED ALL WARNINGS FOLLOW ALL INSTRUCTIONS The symbols shown above are internationally accepted symbols that warn The apparatus shall not be exposed to dripping or splashing liquid and no object filled with liquid, of potential hazards with electrical products.
Page 3: Declaration Of Conformity

GREEN/YEL GREEN European Contact: Your local dbx Sales and Service Office or WARNING: IF THE GROUND IS DEFEATED, CERTAIN FAULT CONDITIONS IN THE UNIT OR IN THE SYS- TEM TO WHICH IT IS CONNECTED CAN RESULT IN FULL LINE VOLTAGE BETWEEN CHASSIS AND EARTH Harman Signal Processing GROUND.
Page 4
5. The foregoing is in lieu of all other warranties, expressed or implied, and dbx neither assumes nor authorizes any person to assume on its behalf any obligation or liability in connection with the sale of this product. In no event shall dbx or its dealers be liable for special or consequential damages or from any delay in the performance of this warranty due to causes beyond their control.
Page 5: Table Of Contents

System Lockout ��48 Front Panel �� 4 Factory Reset ��49 Rear Panel �� 6 Soft Reset ��49 Installing The DriveRack PA2 �� 8 Application Guide ��50 Installation Recommendations �� 8 Full Range Application 1 (Standard) ��50 Making Connections �� 8 Full Range Application 2 (Sub-Satellite System) ��51…
Page 6: Overview

Building upon the same great features that made the DriveRack PX, PA, and PA+ so popular, the DriveRack PA2 adds the latest advancements in dbx’s proprietary AutoEQ™ and AFS ™…
Page 7: Features

• dbx Type IV™ Conversion Prevents Clipping Of The A/D Converters • Easy-To-Read LCD Display • Storage Memory Locations For Up To 75 User Presets • Various Speaker & Amplifier Tunings Included • Additional Tunings & Presets Available For Download Using The Free DriveRack PA2 Control Application…
Page 8: User Interface & Connectors

Front Panel 1. RTA MIC INPUT Connect the dbx RTA-M measurement microphone (sold separately) to this balanced XLR input jack for easy calibration of your sound system using the built-in Wizards. Or use the RTA for manual adjustments and system troubleshooting.
Page 9
LEDs feature a peak hold function, so they will remain lit for a short period of time after the signal level drops back below the clip point. The dbx Type IV™ conversion system built into the PA2 will clamp down on excessively loud input signals and prevent the A/D converters from clipping.
Page 10: Rear Panel

120V 50/60Hz 1. IEC AC Power Inlet Connect the included IEC power cord to this power inlet. The DriveRack PA2 ships from the factory configured for one of two specified power voltage ranges, they are: • 100-120V, 50Hz/60Hz • 220-240V, 50Hz/60Hz…
Page 11
(such as RCA connectors). If you’re not sure what the nominal output operating level of your mixer is, check the product’s manual or contact the manufacturer. It’s advisable to only switch this switch when your amplifiers are powered off or the DriveRack PA2’s outputs are muted. •…
Page 12: Installing The Driverack Pa2

Connect the PA2’s outputs to the designated amplifier or powered speaker inputs. 4� If you plan to calibrate the system using the built-in Wizards, connect the optional dbx RTA-M measurement microphone 5� using a microphone cable of suitable length and place it in a microphone stand.
Page 13: Network Connections �� 9 Full Range Application 3 (All Outputs Full Range)

A DHCP enabled switch or router Wi-Fi Router must be used to assign an IP address to the DriveRack PA2 DriveRack PA2 DriveRack PA2. See ‘Networking’ on page 57 for more information on controlling the PA2 over a network. 120V 50/60Hz…
Page 14: Applying Power

® Applying Power Ensure your power amplifiers or powered speakers are turned off. 1� Make sure that the included IEC power cable provided with your PA2 has the proper connector for connection to your 2� AC power outlet and that the power screening under the IEC power inlet on the back panel of the PA2 matches your country’s voltage requirements.
Page 15: Getting Started

® Getting Started Menu Navigation Overview The DriveRack PA2’s user interface was carefully designed to provide logical navigation and avoid deeply nested menus. The menu navigation is laid out as shown in the below diagram. HOME MODE Press RTA Button…
Page 16: Operating Modes Explained

Home Mode This is the default operating mode. It is the mode the DriveRack PA2 enters when it initially boots and is the mode which displays the selected Home screen. From any menu, you can get back to Home mode by repeatedly pressing the button.
Page 17: The Home Screens

The Home Screens The Home screen is the first screen which appears in the LCD display after the DriveRack PA2 fully initializes (this is also referred to as “Home mode”). There are four Home screens to choose from, providing the instant visual feedback you need, when you need it.
Page 18: Configuring The Driverack Pa2

Configuring The DriveRack PA2 This section of the manual describes how to configure the DriveRack PA2 for your application. The easiest way to configure the PA2 is to use the built-in Wizards. However, for the veteran sound engineers and DriveRack power users, the PA2 can also be configured and tweaked manually.
Page 19
® RUN AutoEQ/LEVEL ASSIST Level Assist/AutoEQ Mic Position 1 AutoEQ Mic Position 2 When used with the optional dbx RTA-M Left Speaker Right Speaker Left Speaker Right Speaker measurement microphone, this Wizard helps you balance the left/right speaker levels, the low/mid/high speaker levels Speakers &…
Page 20
[dbx RTA-M, FLAT] MIC RESPONSE When the dbx RTA-M option is selected, AutoEQ will automatically compensate for the frequency response of the dbx RTA-M microphone, providing more accurate AutoEQ results. Select the FLAT option if using a measurement microphone other than the dbx RTA-M.
Page 21: About Speaker & Amplifier Tunings

® available in the PA2’s preset tuning list, you can use the DriveRack PA2 control app to access the online database where you can find additional tunings. If you can’t find tunings for your particular speakers or amplifiers, you will need to select the NOT LISTED option in the PA2’s Setup Wizard.
Page 22: Manual System Optimization Tips

® Manual System Optimization Tips HiNt: You may want to disable the TIME OUT feature located in the Utility menu before performing any of the following system optimization procedures. This will ensure the PA2 does not revert back to the Home screen throughout the process. See ‘Utility’…
Page 23: Gain Structure & Limiters

® subs, you can perform the same test between the low driver in the main speaker and sub to ensure polarity for all drivers are matched. You will also want to make sure that all drivers/speakers reference absolute polarity. This means that all drivers would push outwards then inwards during each cycle.
Page 24
3� ‘Rear Panel’ on page 6 for more information on this switch. Now, turn the mixer, DriveRack PA2, and amplifiers back on. Go into the PA2’s output limiters and ensure they are all 4� turned OFF, OVEREASY is turned to OFF, and their THRESHOLD’s are set all the way up to 0.0 dB.
Page 25: Balance The System’s Frequency Response

® Raise the mixer’s main output faders until the INPUT CLIP LEDs on the PA2 just begin lighting. 6� Now, go to each amp channel and slowly raise its attenuator until the amp channel’s clip LED just begins to light. 7�…
Page 26: Eq The System At The Venue

AutoEQ or to manually EQ the sound system in the event you don’t have the dbx RTA-M measurement microphone. Note that using the DriveRack PA2 control app on a mobile device allows you to walk around the venue while making EQ adjustments.
Page 27
® further information on the available AFS TYPE options. Go to the FIXED FILTERS parameter and set it to 12. 8� Ensure no sound is present at any of the microphones then slowly raise the main mixer faders until you reach your target 9�…
Page 28: Operating The Driverack Pa2

® Operating The DriveRack PA2 This section of the manual describes how to operate the DriveRack PA2 after you have initially configured and optimized the system using the Wizards. This includes editing parameters and managing presets. Editing Parameters To edit a processing module’s parameters: Press the module’s button (e.g.,…
Page 29: Managing Presets

® Managing Presets The DriveRack PA2 has two types of presets: user and factory. The user presets occupy preset memory locations1-75. The factory presets occupy preset memory locations 76-100. The difference between these preset types is that factory presets are meant to be used as templates and cannot be overwritten and user presets can be overwritten and are designed to store your custom presets.
Page 30: Storing Presets

® Storing Presets Once you are satisfied with the changes made to a factory or user preset, you are ready to store the changes to a user preset memory location. The STORE button is used to store modifications made to a preset. To store a preset: Press the button.
Page 31: The Pa2 Processing Modules & Parameters

® The PA2 Processing Modules & Parameters This section of the manual provides descriptions of all the processing modules available in the DriveRack PA2 and their associated parameters. Graphic EQ (GEQ) The 31-band GEQ module lets you manually tune the sound system’s frequency response and is meant to be used alone or alongside the AutoEQ PEQ (which is set when you run the AutoEQ).
Page 32
® • MYBAND This option is optimized for live music performance using a portable PA system in small to medium sized venues (small coffee shops or clubs for example). It offers some low-end boost with low-mid cut, which enhances the low end while preventing the system from sounding too muddy.
Page 33: Parametric Eq (Autoeq, High, Mid, Low Peq)

® Parametric EQ (AutoEQ, HIGH, MID, LOW PEQ) There are two types of PEQs available in the PA2: the AutoEQ PEQ and the output PEQs (labeled LOW, MID, and HIGH). The AutoEQ PEQ is an 8-band parametric EQ which resides in the input processing side of the PA2 (pre crossover) and is automatically adjusted by the built-in AutoEQ Wizard.
Page 34
® • [20 Hz — 20 kHz] BAND(1-8) FREQUENCY This parameter adjusts the center/cutoff frequency of the selected EQ band. • [-12 dB — +12 dB] BAND(1-8) GAIN This parameter adjusts the gain of the selected EQ band. • [0.1 — 15.909] BAND(1-8) Q This parameter is only available with BELL type filters and adjusts the width of the selected PEQ filter.
Page 35: Advanced Feedback Suppression (Afs)

™ The AFS algorithm in the PA2 is a little different than the AFS algorithm used in any previous dbx products. That’s because the dbx engineers revisited the already-stellar AFS algorithm to see if they could improve it. And guess what? They did! The updated AFS algorithm in the PA2 can now detect and eliminate feedback faster than ever before and with even higher precision.
Page 36
® HiNt: AFS works best when the signal entering the PA2’s inputs is sufficient. This requires proper gain staging between the mixer and PA2. If the signal level is too low, AFS may be slow to respond to feedback. See ‘Manual System Optimization Tips’…
Page 37
® begin to round robin – meaning that if all Live filters have been set and new feedback occurs, the first Live filter set will be released then re-set at the new feedback frequency location. The Live filters can be set to release after a period of time by enabling the LIVE LIFT option and adjusting the LIFT AFTER parameter.
Page 38
® HiNt: Since it’s not really possible to predict exactly how many Fixed filters you may need, a good setting to start with is the default setting of 6. If after ringing out the system, you feel you need to squeeze a little more gain out of the system before feedback, you can increase the FIXED FILTERS setting and run the AFS Wizard again or manually ring out only the newly added Fixed filters in the AFS menu.
Page 39: Subharmonic Synthesis (Sub)

® Subharmonic Synthesis (SUB) dbx’s subharmonic synthesis (or sub-synth) processing has been specifically optimized to enhance the low frequencies in audio material and was designed for use in a variety of professional audio applications, including nightclub and dance DJ mixing, theatre and film sound, music recording, live music performance, and broadcasting. Using traditional EQ to enhance this extremely low frequency region can increase noise potential and stage rumble (low-frequency feedback) in live PA systems.
Page 40
® Note: If you experience low-frequency artifacts on a voice when using subharmonic synthesis, try engaging a high pass filter, using EQ, or a combination thereof on the vocal’s mixer channel to reduce the artifacts. If a high pass filter and EQ are not enough, try lowering the overall amount of Subharmoic Synthesis applied to the signal by adjusting the SUBHARMONICS parameter.
Page 41: Compressor (Comp)

® Compressor (COMP) A compressor is used to compress the dynamic range of the audio signal, bringing up the lower level portions of the signal and restricting the higher level portions of the signal. In live sound applications, it is common to compress the audio at different stages in the signal chain.
Page 42
® a 2:1 ratio would allow the output signal level to increase by only 1 dB for every 2 dB of level increase over threshold. In other words, 1 dB of compression will be applied for every 2 dB increase in level above threshold. For light compression, choose a lower ratio.
Page 43: Delay

® Delay There are two different delay module types available in the PA2, they are: the input (also known as pre or backline) delay module and the output (also known as driver alignment) delay module. The output delay modules (labelled HIGH, MID, and LOW) are used to time align loudspeaker drivers which require it. Typically, driver alignment delay is only required when configuring a bi-amplified (2-way) or tri-amplified (3-way) system.
Page 44
® LOW DELAY for the LOW outputs. If you’ve configured a 3-way system, you will see an additional MID DELAY for the MID outputs. Turn and press the wheel to select the desired delay module. Turn the wheel to scroll through the list DATA DATA of parameters.
Page 45: Crossover (Xover)

® Crossover (XOVER) A crossover is used to divide the broadband signal into separate frequency bands. This allows you to drive each loudspeaker or driver in a sound system within its optimal frequency range. Using an active crossover, like that in the PA2, has the additional benefits of increasing the efficiency of your power amplifiers, lowering intermodulation distortion, and in some cases, improving the drivers’…
Page 46
® summed, a 3 dB increase in level will be created at the crossover frequency. LR stands for Linkwitz-Riley. When two Linkwitz-Riley filters are summed, there is no increase in level around the crossover frequency, which makes these type of filters very popular.
Page 47: Limiter

If tunings aren’t listed for your amplifiers, check the ever-growing online database using the DriveRack PA2 control app to see if they’ve been added. If tunings cannot be found for your amps, select the NOT LISTED option.
Page 48
® L O W L I M I T E R • [-60 dB to 0 dB] THRESHOLD M I D L I M I T E R This parameter sets the level at which the limiter will kick in and begin limiting the THRESHOLD METER signal.
Page 49: Rta

® The 31-band RTA (Real-Time Analyzer) module allows you to monitor frequency levels. This information can help with identifying system issues – such as improperly set crossover settings, blown drivers, or driver/speaker dependent level issues. It can also be used when manually tuning the sound system. RTA Parameters The RTA menu can be accessed by pressing the button.
Page 50: Utility

Security feature. When enabled, the PA2 will require a password before it can be controlled over a network using the DriveRack PA2 control app. Follow the on-screen instructions to edit the password. Changing the password back to ‘administrator’ will disable the Security feature.
Page 51: Power-Up Functions

Power-Up Functions Power-up functions allow you to reset DriveRack PA2 presets and settings, lock out the front panel controls, and configure the PA2 to always power up with the output mutes enabled. These power-up functions are accessed by pressing and holding certain buttons upon power-up.
Page 52: System Lockout

® System Lockout This power-up function locks out the PA2’s front panel controls to prevent unauthorized tampering. The following options are available: • System Unlocked This is the default setting and allows access to all PA2 functions from the front panel controls. •…
Page 53: Factory Reset

3� WIZARD STORE Soft Reset The Soft Reset function resets all Utility settings in the DriveRack PA2 back to their factory default state without resetting user presets. To perform a Soft Reset: Power down the DriveRack PA2. 1�…
Page 54: Application Guide

• In the Setup Wizard, select your main speakers from the list. If prompted, select the PASSIVE option for your main speaker configuration. If your speakers are not listed in the PA2, use the DriveRack PA2 control app to check the online database to see if your speaker tunings have been added.
Page 55: Full Range Application 2 (Sub-Satellite System)

If the PA2 does not contain tunings for your speakers and you are unable to download them from the online database using the DriveRack PA2 control app, it is recommended that you configure the system as shown in the following system diagram.
Page 56
® Full Range Application 3 (All Outputs Full Range) Some full range systems may require more than two full range outputs from the PA2. The PA2 can accommodate these systems as well, but such systems are atypical and cannot be properly configured using the PA2’s Setup Wizard alone. Typically, you can parallel your amps or powered speakers in such a system and just use a pair of outputs from the PA2 to feed the system –…
Page 57: 2-Way Application

2-WAY main speaker configuration option when prompted. If your speakers are not listed in the PA2, use the DriveRack PA2 control app to check the online database to see if your speaker tunings have been added.
Page 58: 3-Way Application

• In the Setup Wizard, select your main and sub speakers from the list. When prompted, select the 2-WAY main speaker configuration option. If your speakers are not listed in the PA2, use the DriveRack PA2 control app to check the online database to see if your speaker tunings have been added.
Page 59: Preset List

® Preset List User Preset # Factory Preset # Name Description 1, 26, 51 ST.Full Range Stereo Full Range 2, 27, 52 M.FullRange Mono Full Range 3, 28, 53 ST.2WaywST.Sub Stereo 2-Way with Stereo Subs 4, 29, 54 ST.2WaywM.Sub Stereo 2-Way with Mono Sub 5, 30, 55 M.2WaywST.Sub Mono 2-Way with Stereo Subs…
Page 60: Driverack Pa2 Control Application

® ® Note: You can control one PA2 unit on the network at a time. The DriveRack PA2 can be controlled via one networked control device at a time. Device Requirements Visit dbxpro.com for the latest information on device requirements for the DriveRack PA2 control application.
Page 61: Networking

4. If the PA2’s IP address reads “0.0.0.0”, power cycle the PA2 (ensure your amplifiers are off) then check the IP address again. If the PA2 now has an IP address, see if you can connect using the DriveRack PA2 control app. If the PA2 still does not have an IP address or you still cannot connect with the DriveRack PA2 control app, go to step 2.
Page 62
If this fixes the problem, refer to your firewall manufacturer’s documentation on how to reconfigure your firewall to allow the DriveRack PA2 control app, or ports 19272 (TCP and UDP) and port 21 (FTP), to pass through the…
Page 63: Technical Information

Firmware Update Utility application will be made available on the DriveRack PA2 product page at www.dbxpro.com as updates become available. If using the DriveRack PA2 control app , you can also update the PA2 via the Ethernet port straight from the application, regardless of the device you’re using for control (i.e., iOS…
Page 64: Dsp Block Diagram

® DSP Block Diagram Mute Mute Mute Mute Mute Mute Alignment Delay Alignment Delay Alignment Delay PeakPlus Limiter PeakPlus Limiter PeakPlus Limiter 8-Band PEQ 8-Band PEQ 8-Band PEQ Crossover w/Polarity Pre Delay Compressor Subharmonic Syntesizer Advanced Feedback Suppression AutoEQ 8-Band PEQ Real Time Analyzer (RTA) 31-Band Graphic Equalizer…
Page 65: Cable Diagrams

® Cable Diagrams Ethernet Cable Diagrams Straight-Through Use straight-through CAT5e or CAT6 Ethernet cables to connect the PA2 to your network switch/router. The below diagrams show the pinout of such cables. These are the most common type of Ethernet cables available. TIA/EIA 568A Straight-Through CAT5e or CAT6 TIA/EIA 568B Straight-Through CAT5e or CAT6 RJ-45…
Page 66: Audio Cable Diagrams

® Audio Cable Diagrams TO NEXT DEVICE (INPUT) TO NEXT DEVICE (INPUT) FROM SOURCE DEVICE (OUTPUT) FROM SOURCE DEVICE (OUTPUT) SLEEVE RING RING SLEEVE (COLD -) (GROUND) (GROUND) (COLD -) HOT + HOT + COLD — COLD — SLEEVE SLEEVE (HOT +) (HOT +) FEMALE XLR TO TRS PHONE…
Page 67: Dimensions

® Dimensions…
Page 68: Specifications

Alignment Delay: Up to 10ms per output channel pair A/D PERFORMANCE A/D Converter: 24-bit with dbx Type IV™ Conversion System A/D Dynamic Range: 112 dB A-weighted, 110 dB unweighted Type IV Dynamic Range: 123 dB with transient material, A-weighted, 22kHz BW;…
Page 69: Additional Resources

® Additional Resources dbx Website http://www.dbxpro.com DriveRack PA2 Product Page http://www.dbxpro.com/en-US/products/driverack-pa2 dbx Support http://www.dbxpro.com/en-US/support dbx User’s Forum http://www.dbxpro.com/forum…
Page 70
10653 South River Front Parkway, #300 South Jordan, Utah 84095 Phone: (801) 566-8800 Website: www�dbxpro�com Support: http://www�dbxpro�com/en-US/support dbx Professional Products is a registered trademark of Harman © 2014 Harman All rights reserved DriverRack PA2 Owner’s Manual ® PN: 5044138-A Macintosh, iOS, iPhone, iPad, iTunes, and App Store are trademarks of Apple Computer Incorporated, registered in the U.S.

Источник

Owner’s Manual

Warranty

1.Please register your product online at dbxpro.com. Proof-of-purchase is considered to be the responsibility of the consumer. A copy of the original purchase receipt must be provided for any warranty service.

2.dbx warrants this product, when purchased new from an authorized U.S. dbx dealer and used solely within the U.S., to be free from defects in materials and workmanship under normal use and service. This warranty is valid to the original purchaser only and is non-transferable.

3.dbx liability under this warranty is limited to repairing or, at our discretion, replacing defective materials that show evidence of defect, provided the product is returned to dbx WITH RETURN AUTHORIZATION from the factory, where all parts and labor will be covered up to a period of two years. A Return Authorization Number must first be obtained from dbx. The company shall not be liable for any consequential damage as a result of the product’s use in any circuit or assembly.

4.dbx reserves the right to make changes in design or make additions to or improvements upon this product without incurring any obligation to install the same additions or improvements on products previously manufactured.

5.The foregoing is in lieu of all other warranties, expressed or implied, and dbx neither assumes nor authorizes any person to assume on its behalf any obligation or liability in connection with the sale of this product. In no event shall dbx or its dealers be liable for special or consequential damages or from any delay in the performance of this warranty due to causes beyond their control.

Technical Support & Service

If you require technical support, contact dbx Technical Support. Be prepared to accurately describe the problem. Know the serial number of your device – this is printed on a sticker attached to the chassis.

Before you return a product to the factory for service, we recommend you refer to this manual. Make sure you have correctly followed installation steps and operating procedures. For further technical assistance or service, please contact our Technical Support Department at (801) 566-8800 or visit dbxpro.com. If you need to return a product to the factory for service, you MUST first contact our Technical Support Department to obtain a Return Authorization Number.

NO RETURNED PRODUCTS WILL BE ACCEPTED AT THE FACTORY WITHOUT A RETURN AUTHORIZATION NUMBER.

Please refer to the Warranty information, which extends to the first end-user. After expiration of the warranty, a reasonable charge will be made for parts, labor, and packing if you choose to use the factory service facility. In all cases, you are responsible for transportation charges to the factory. If the product is still under warranty, dbx will pay the return shipping.

Use the original packing material if it is available. Mark the package with the name of the shipper and with these words in red: DELICATE INSTRUMENT, FRAGILE! Insure the package properly. Ship prepaid, not collect. Do not ship parcel post.

Table of Contents

Overview 2

Introduction 2 Features 3

User Interface & Connectors 4

Front Panel 4 Rear Panel 6

Installing The DriveRack PA2 8

Installation Recommendations 8 Making Connections 8 Audio Connections 8 Network Connections 9 Applying Power 10

Getting Started 11

Menu Navigation Overview 11 Operating Modes Explained 12 The Home Screens 13

Configuring The DriveRack PA2 14

Using The Wizards 14 About Speaker & Amplifier Tunings 17 Manual System Optimization Tips 18 1. Set Crossover Frequency & Filter Settings 18 2. Set Driver Alignment Delays & Polarity 18 3. Set Gain Structure & Limiters 19 4. Balance The System’s Frequency Response 22 5. EQ The System In The Venue 22 6. Ring Out The System With AFS 23 7. Add Finishing Touches 23

Operating The DriveRack PA2 24

Editing Parameters 24 Managing Presets 25 Recalling Presets 25 Editing Presets 25 Storing Presets 26 Copying Presets 26

The PA2 Processing Modules & Parameters 27

Graphic EQ (GEQ) 27 Parametric EQ (AutoEQ, HIGH, MID, LOW PEQ) 29 Advanced Feedback Suppression (AFS) 31 Subharmonic Synthesis (SUB) 35 Compressor (COMP) 37 Delay 39 Crossover (XOVER) 41

Limiter 43 RTA 45 Utility 46

Power-Up Functions 47

Initialize With Mutes On 47 System Lockout 48 Factory Reset 49 Soft Reset 49

Application Guide 50

Full Range Application 1 (Standard) 50 Full Range Application 2 (Sub-Satellite System) 51 Full Range Application 3 (All Outputs Full Range) 52 2-Way Application 53 3-Way Application 54

Preset List 55

DriveRack PA2 Control Application 56

Device Requirements 56 Networking 57 Networking Overview 57 Network Security 57 Network Troubleshooting 57

Technical Information 59

Firmware Updates 59 DSP Block Diagram 60 Cable Diagrams 61 Ethernet Cable Diagrams 61 Audio Cable Diagrams 62 Dimensions 63 Specifications 64

Additional Resources 65

dbx Website 65 DriveRack PA2 Product Page 65 dbx Support 65 dbx User’s Forum 65

Overview

Introduction

The DriveRack® PA2 represents the next generation of PA loudspeaker management processing from dbx®. With dynamics, EQ, feedback suppression, crossover, subharmonic synthesis, and delay processing, the DriveRack PA2 provides all the processing you need between your mixer and amplifiers to optimize and protect your loudspeakers.

Building upon the same great features that made the DriveRack PX, PA, and PA+ so popular, the DriveRack PA2 adds the latest advancements in dbx’s proprietary AutoEQ™ and AFS™ (Advanced Feedback Suppression) algorithms, a new input delay module for delaying the sound system to the backline, Ethernet control via an iOS®, Android™, Mac®, or Windows® device, and much, much more!

The updated Wizards in the PA2 are more intuitive and powerful than ever and offer step-by-step assistance with setup configuration, loudspeaker optimization, and system feedback elimination. The updated AutoEQ™ uses frequency sweeps rather than pink noise and allows you to take up to four measurements for analysis, providing an extremely accurate, timely, and non-intrusive automatic EQ experience. And the enhanced AFS algorithm is now even faster and more accurate at eliminating feedback, without adversely affecting your system’s tone.

The most exciting new feature of the DriveRack PA2 is the network and Wi-Fi control capabilities using the free DriveRack PA2 control application available for iOS, Android, Mac, and Windows compatible devices. Now you can configure and adjust the settings of your loudspeaker management processor from anywhere in the venue!

You say your speaker or amplifier tunings aren’t available in the DriveRack PA2’s default tuning list? No problem. Use the DriveRack PA2 control app to connect to the online database, where you can instantly download and apply the latest available tunings from JBL®, Crown®, dbx, and more – no firmware update necessary!

With supported crossover configurations for full range, 2-way, and 3-way systems, enhanced algorithms and functionality, and a stylish new design, the DriveRack PA2 was engineered to continue the DriveRack legacy of great-sounding and affordable loudspeaker management processing.

Thanks for choosing dbx.

Features

•24-Bit A/D & D/A Converters

•48 kHz/32-Bit Floating Point Processing

•dbx Type IV™ Conversion

•Setup Wizard For Easy System Configuration

•Level Assist For System Level Balancing

•AutoEQ™ For Fast & Accurate Room Equalization Using 8-Band Parametric EQ

•AFS™ For Ringing Out The System & On-The-Fly Feedback Suppression

•31-Band Graphic EQ For Tailoring The System’s Frequency Response To Taste

•Subharmonic Synthesizer

•dbx® Compression

•Pre-Crossover Delay For Aligning The Sound System To The Stage Backline

•Crossover With Support For Full Range, 2-Way, & 3-Way Configurations

•Stereo 8-Band Output Parametric EQs For Speaker Tunings

•Stereo PeakPlus™ Output Limiters

•Stereo Output Driver Alignment Delays For 2-Way & 3-Way Systems

•Real-Time Analyzer

•White/Pink Noise Generator

•2 XLR Inputs

•6 XLR Outputs

•Front-Panel XLR RTA Mic Input With 15V Phantom Power

•Support For Mono Or Stereo Inputs

•Support For Mono Or Stereo Subwoofers

•Bright, 6-Segment Input & Output Meters

•Front-Panel Output Mute Buttons

•Security Lockout

•Easy-To-Read LCD Display

•Storage Memory Locations For Up To 75 User Presets

•Various Speaker & Amplifier Tunings Included

•Network Control Via The Free DriveRack PA2 Control Application For iOS®, Android™, Mac®, & Windows® Compatible Devices

User Interface & Connectors

Front Panel

	1	2	3	5	6	8	10	12
1.	RTA MIC INPUT		4			7	9	11	13

Connect the dbx RTA-M measurement microphone (sold separately) to this balanced XLR input jack for easy calibration of your sound system using the built-in Wizards or for use with the RTA. This jack supplies +15V phantom power.

2. LCD Display

This LED-backlit LCD display provides the visual feedback required for operating the PA2 processor from the front panel.

3. BACK Button

Pressing this button will navigate back one level in the current menu tree. Pressing this button multiple times will navigate back to the home screen.

4. DATA Wheel (SELECT)

This data wheel is used for scrolling and loading presets, scrolling menus, selecting on-screen options and parameters, and editing selected on-screen options and parameters. Some functions are performed by turning the data wheel and others are performed by pressing the data wheel.

5. WIZARD Button

Pressing this button enters the Wizard menu, where you can select a specific Wizard to run or run all Wizards in succession. For more information on the different Wizards, see ‘Using The Wizards’ on page 14.

6. PRESET Buttons

The STORE and RECALL buttons are used to store and recall presets. For more information on storing, copying, and recalling presets, see ‘Managing Presets’ on page 25.

7. UTILITY Button

Pressing this button enters the Utility menu, where you can get information about the PA2’s firmware and network settings and configure global system settings which dictate how the PA2 operates. See ‘Utility’ on page 46 for information on the options and parameters available in the Utility menu.

8. INSTANT ACCESS Buttons

Pressing each of these buttons opens the menu for the corresponding processing module, where you can edit the parameters pertaining to each processing module. Pressing the RTA button enters the Real-Time Analyzer, where you can monitor the system’s signal using the optional dbx RTA-M microphone for fine-tuning and troubleshooting the system.

9. INPUT Meters

These 6-segment LED meters display the input signal level strength and available headroom, and range from SIG (signal present) to 0 (dBFS). These meters monitor the signal level right after the A/D converter and will light when the signal level is greater than or equal to the values shown in the table to the right.

Input LEDs	dBFS	(switch set to +4 dBu)	(switch set to -10 dBV)
0	-0.1	19.9 dBu	7.7 dBV

3	-3	17 dBu	4.8 dBV

10	-10	10 dBu	-2.2 dBV

15	-15	5 dBu	-7.2 dBV

20	-20	0 dBu	-12.2 dBV

SIG	-48	-28 dBu	-40.2 dBV

10. CLIP LEDs

When these LEDs light, it indicates that the PA2’s inputs are being overdriven and input clipping is occurring. These LEDs feature a peak hold function, so they will remain lit for a short period of time after the signal level drops back below the clip point. The dbx Type IV™ conversion system built into the PA2 will clamp down on excessively loud input signals and prevent the A/D converters from clipping. If you’re lighting these LEDs, you will need to reduce the output level of your mixer. If you have the +4dBu/-10dBV switch on the back panel of the PA2 set to the -10dBV position, but you’re sending a +4dBu signal to the PA2’s inputs, this may cause these LEDs to light prematurely. If this occurs, set this switch to the +4dBu position (it is recommended that you mute the PA2’s outputs before doing so).

11. OUTPUT Meters

These 6-segment LED meters display the output signal level strength and available headroom, and range from SIG (signal present) to 0 (dBFS). These meters monitor the signal level after the limiter modules and output MUTE buttons and will light when the signal level is greater than or equal to the values shown in the table to the right.

Output LEDs	dBFS	dBu

0	-0.1	19.9

3	-3	17

10	-10	10

15	-15	5

20	-20	0

SIG	-48	-28

12. TH (THRESHOLD) Indicators

These multi-colored threshold LEDs indicate output limiter activity within the specified output channels. The three colored states are:

•Green

The signal level is under threshold and no limiting is occurring.

•Yellow

The signal level has approached the threshold and some minor limiting is occurring. This state is only active when the limiter’s OverEasy™ setting is turned on.

•Red

The signal level has exceeded the limiter’s threshold and limiting is occurring.

13.MUTE Buttons

Pressing each of these buttons will mute the corresponding output channel. When activated, the signal will be muted prior to the output meter. The state of these outputs are global and are not stored to presets. However, the state of these buttons will be retained after a power cycle. The MUTES POWERUP function, available in the Utility menu, lets you configure the PA2 to always power on with all outputs muted. See ‘Utility’ on page 46 for more information on this feature. You can also press and hold any of these MUTE buttons upon power up to force the PA2 to initialize with all outputs muted. See ‘Initialize With Mutes On’ on page 47 for more information on this feature.

Rear Panel

1. IEC AC Power Inlet

Connect the included IEC power cord to this power inlet. The DriveRack PA2 ships from the factory configured for one of two specified power voltage ranges, they are:

•100-120V, 50Hz/60Hz

•220-240V, 50Hz/60Hz

NOTE: Ensure the screening under this outlet matches the voltage specification in your country before applying power to the PA2.

2. Ethernet Port

This RJ45 connector is used for updating the firmware and controlling the PA2 from a networked device using the free DriveRack PA2 control app. See ‘Network Connections’ on page 9, ‘Networking’ on page 57, and

‘Firmware Updates’ on page 59 for more information on using this port.

NOTE: A DHCP enabled switch or Wi-Fi router is required to assign an IP address to the PA2 for network control.

3. USB Port

This USB connector is used for updating the PA2’s firmware. See ‘Firmware Updates’ on page 59 for more information.

4. Outputs 1–6

These six electronically balanced XLR outputs correspond to the low, mid, and high output processing chains. Note that crossover frequencies can be extended to overlap each other in the crossover processing module, allowing for more flexible crossover configuration, such as configuring multiple outputs for full range operation.

5. Inputs 1–2

Connect your mixer outputs to these electronically balanced XLR input connectors. These inputs can be configured for stereo or mono applications in the Wizard. The input sensitivity of these jacks are affected by the +4dBu/-10dBV switch.

6. Input Switches

These switches are recessed to prevent accidental switching. You may need to use the tip of your fingernail or an object with a pointy tip, such as a pen, to activate these switches.

•+4dBu/-10dBv Switch

This switch sets the PA2’s input sensitivity. Select the +4dBu option (switch out) when connecting a mixer or device which has a nominal output operating level of around +4dBu. Select the -10dBV option (switch in) when connecting a mixer or device which operates at a lower “consumer” level, such as some DJ mixers or a consumer device with unbalanced output connectors (such as RCA connectors). If you’re not sure what the nominal output operating level of your mixer is, check the product’s manual or contact the manufacturer. It’s advised that you reduce your mixer’s output level and power off your amplifiers or mute the PA2’s outputs before changing the position of this switch.

•Ground Lift Switch

The ground lift switch lifts the pin 1 chassis ground on both input XLR connectors. In most applications, this switch should be left in the out (disabled) position. If hum becomes an issue and is caused from a ground loop between your mixer and PA2, try engaging this switch. It’s advised that you power off your amplifiers or mute the PA2’s outputs before changing the position of this switch.

InstallingThe DriveRack PA2

Installation Recommendations

FOR RACK MOUNT USE ONLY. Install the PA2 in your 19” rack with the provided rack screws. When installed in a rack, make sure there is proper ventilation. The sides and back of the device should be free of any obstruction that would prevent airflow. The PA2 should not be mounted above or below anything that generates excessive heat. Ambient temperatures should not exceed 950 F (350 C) when equipment is in use. Although the unit is shielded against radio frequency and electromagnetic interference, extremely high fields of RF and EMI should be avoided where possible.

Making Connections

Audio Connections

1.Ensure the power is turned off on all interconnecting equipment and the PA2 before making audio connections.

2.See ‘Application Guide’ on page 50 for application notes and system diagrams which can be used for reference when connecting the PA2 to your system. See ‘Cable Diagrams’ on page 61 for information on cabling.

3.Connect the outputs of your mixing console to the inputs of the PA2.

NOTE: The +4dBu/-10dBV switch on the back panel of the PA2 must be set to the correct position for your application in order to avoid performance issues. +4dBu is referred to as “pro level” and will be the correct setting for most applications, as most pro and semi-pro mixers will output a nominal level of around +4dBu. -10dBV is referred to as “consumer level” and will need to be used when connecting a source which has an output level approximately 12 dB lower than pro level equipment.

4.Connect the PA2’s outputs to the designated amplifier or powered speaker inputs.

5.If you plan to calibrate the system using the built-in Wizards, connect the optional dbx RTA-M measurement microphone using a microphone cable of suitable length and place it in a microphone stand.

Network Connections

1.Download and install the free DriveRack PA2 control app on the iTunes Store®, Google Play™, or from www.dbxpro. com.

Wired Ethernet Switch

DriveRack PA2

2.Connect a straight-through CAT5, CAT5e, or CAT6 Ethernet cable (sold separately) to the Ethernet port on the DriveRack PA2.

3.Connect the other end of the Ethernet cable to one of the LAN ports on a DHCP-enabled network router or switch.

4.For a wired connection, connect your computer’s Ethernet port to one of the other LAN ports on the router or switch using a straight-through CAT5, CAT5e, or CAT6 cable.

Ethernet Switch With DHCP Enabled

5. Make sure the network switch or router is powered on		Mac® or Windows®
	Computer
and fully booted then power on the DriveRack PA2. See
‘Applying Power’ on page 10 for further information		Wired Ethernet Router
on properly powering on the PA2. If the PA2 is already
	DriveRack PA2
powered on, power down your amplifiers or powered

speakers then power cycle the PA2. The PA2 must	120V	50/60Hz
be powered on after the switch/router in order to be
assigned an IP address.		Ethernet Router With DHCP Enabled

6.To verify the PA2 has been assigned an IP address, press the UTILITY button then select the SYSTEM INFO option or press the DATA wheel from the home screen to view the System Info home screen.

7.If using a Wi-Fi router, connect to the Wi-Fi network using your Wi-Fi equipped computer or device.

NOTE: A DHCP (Dynamic Host Configuration Protocol)-enabled switch or router must be used to assign an IP address to the DriveRack PA2. See ‘Networking’ on page 57 for more information on networking or

if you’re having difficulty connecting to the PA2 over the network.

Mac® or Windows®

Computer

Wi-Fi Router

DriveRack PA2

NOTE: Crossover Ethernet cables can also be used for Ethernet connections as long as the switch or router is capable of auto-sensing the type of Ethernet cable connected and reconfiguring itself accordingly (referred to as auto-MDI/MDIX sensing). See ‘Cable Diagrams’ on page 61 for more information on the difference between straight-through and crossover Ethernet cable types.

Wi-Fi Router With DHCP Enabled

	or	or
Mac® or Windows®	Android™ or iOS®	Android™ or iOS®
Computer With Wi-Fi	Tablet	Smartphone

Applying Power

1.Ensure your power amplifiers or powered speakers are turned off.

2.Make sure the included IEC power cable provided with your PA2 has the proper connector for connection to your AC power outlet and that the power screening under the IEC power inlet on the back panel of the PA2 matches your country’s voltage requirements.

3.Connect the power cable to the AC power inlet on the PA2’s back panel.

4.Apply power to the PA2 by connecting the other end to an available AC power outlet. Since the PA2 does not have a power switch, an AC power strip or power conditioner can be used for switching power to the PA2 on or off.

5.Apply power to your mixer then your power amplifiers or powered speakers.

NOTE: When powering up a fully configured and connected PA system, it is advisable to ALWAYS turn on the mixer and PA2 first, then turn on your amplifiers or powered speakers. It’s also a good idea to ensure you’re not passing audio to the mixer’s outputs (or ensure your mixer’s master faders are all the way down) before applying power to the amplifiers. When powering down the system, you should ALWAYS power down the amplifiers first, wait about 10 seconds to allow them to discharge, then power down the mixer and PA2. In short, every time you use your system, the power amps should be the last components turned on and the first components turned off.

Getting Started

Menu Navigation Overview

The DriveRack PA2’s user interface was carefully designed to provide logical navigation and avoid deeply nested menus. The menu navigation is laid out as shown in the below diagram.

		HOME MODE
		Con guration
		Home Screen
	SELECT	Dynamic Meters
	Home Screen

	Press	RTA
	Home Screen

		System Info
		Home Screen

Press RTA Button

Press RECALL Button

Press STORE Button

Press UTILITY Button

Press GEQ Button

Press AFS Button

Press SUB Button

Press COMP Button

Press XOVER Button

Press LIMITER Button

Press PEQ Button

Press DELAY Button

Press WIZARD Button

RTA Menu

Preset Recall Menu

Preset Store Menu

Utility Menu

Graphic EQ Menu

AFS Menu

Subharmonic Synth

Compressor Menu

Crossover Menu

Limiter Menu

Parametric EQ Menu

Delay Menu

Wizard Menu

Turn DATA Wheel / Press SELECT

High Crossover Menu

Mid Crossover Menu

Low Crossover Menu

High Limiter Menu

Mid Limiter Menu

Low Limiter Menu

PEQButton Hold & Press LIMITER ButtonHold & Press XOVER Button

Turn DATA Wheel / Press SELECT

AutoEQ Menu

High PEQ Menu

Mid PEQ Menu

Low PEQ Menu

Input Delay Menu

High Output

Delay Menu

Mid Output

Delay Menu

Low Output

Delay Menu

Hold & Press DELAYButton Hold & Press

Turn DATA Wheel / Press SELECT

Run All Wizards

Run Setup Wizard

Run AutoEQ/

Level Assist

Run AFS Wizard

Wizard Options

Operating Modes Explained

This section describes the different operating modes available in the DriveRack PA2 and how to enter each mode.

Home Mode

This is the default operating mode. It is the mode the DriveRack PA2 enters when it initially boots and is the mode which displays the selected home screen. From any menu, you can get back to Home mode by repeatedly pressing the BACK button. How many times you must press the BACK button to return to Home mode is determined by how deeply you have navigated in the current menu.

Wizard Mode

This mode is entered by pressing the WIZARD button. This mode is used to create a new system configuration or edit an existing one. It is also used to AutoEQ a system (optional RTA-M microphone required) and ring out a system for feedback. When running the Wizards, pressing and holding the WIZARD button will abort the Wizard and return to the main Wizard menu.

Edit Mode

Edit mode is entered by pressing any of the INSTANT ACCESS buttons or the UTILITY button. This mode is used to edit processing module parameters, RTA parameters, and global system parameters.

Preset Recall Mode

This mode is entered by pressing the preset RECALL button and is used to load an existing factory or user preset.

Preset Store Mode

This mode is entered by pressing the preset STORE button and is used to store the current preset to a user preset memory location.

The Home Screens

The home screen is the first screen which appears in the LCD display after the DriveRack PA2 fully initializes (this is also referred to as “Home mode”). There are four home screens to choose from, providing the instant visual feedback you need, when you need it. All home screens will display the currently loaded preset number and name, so you always know which preset is currently loaded. To toggle between Home screens, simply press the DATA WHEEL from Home mode. Below is a description of each available home screen.

Configuration Home Screen

This is the default home screen. This screen shows the configuration and signal flow of the currently loaded preset. The far left of the screen indicates input configuration. The far right of the screen indicates output configuration. All the blocks in-between represent the processing modules.

			Configuration Home Screen
Dynamic Meters Home Screen
This home screen shows dynamic processing activity in the input compressor and
output limiter modules. The meters on the left of this screen show threshold activity.
The		icon indicates the signal is below threshold and no dynamics processing is


occurring. The		icon indicates that the signal level is within the “OverEasy” region and
O

some minor compression or limiting is beginning to occur (this icon will only light if the
dynamics processor is configured with “OverEasy” enabled). The		icon indicates that


the signal is over threshold and full compression or limiting is occurring. The meters on
the right show how much gain reduction is occurring in each processing module.	Dynamic Meters Home Screen

RTA Home Screen

This home screen provides quick access to the Real-Time Analyzer. When the optional RTA-M measurement microphone is connected to the RTA Mic Input, this RTA can be used for manually fine-tuning and troubleshooting the system.

RTA Home Screen

System Info Home Screen

This home screen shows the currently installed firmware version and the network IP address assigned to the PA2.

System Info Home Screen

NOTE: After a power cycle, the DriveRack PA2 will return to the home screen selected before the unit was powered down.

NOTE: The TIME OUT feature in the Utility menu will determine if the DriveRack PA2 will return to the home screen after a period of inactivity and how long it will wait before timing out. See ‘Utility’ on page 46 for further information on the TIME OUT feature.

Configuring The DriveRack PA2

This section of the manual describes how to configure the DriveRack PA2 for your application. The easiest way to configure the PA2 is to use the built-in Wizards. However, for the veteran sound engineers and DriveRack power users, the PA2 can also be configured and tweaked manually. For example, you can create the basic configuration using the Setup Wizard, or load an existing preset, then tweak the parameters as necessary from there. The RTA can then be used to analyze the system’s frequency response for making manual adjustments or for troubleshooting system issues.

Using The Wizards

The PA2 Wizards are accessed by pressing the WIZARD button. These Wizards walk you through the configuration process with simple, step-by-step instructions, making it easy to configure the PA2 for your amplifiers, speakers, and the venue.

Using the optional dbx RTA-M measurement microphone, the Wizards can optimize your sound system by helping adjust your left/right speaker balance, low/mid/high level balance, and analyzing your room and applying accurate room EQ – in a fraction of the time it would take to manually analyze and calibrate the system.

The updated DriveRack PA2 Wizard section now also includes options for altering existing configurations (presets), making it possible to use the Wizards to update portions of a configuration without having to recreate the whole configuration from scratch. Below is a list and description of each of the available options in the PA2’s Wizard menu.

RUN ALL WIZARDS [CURRENT SETTINGS, NEW SETTINGS]

Select this option to run through all the Wizards in succession. Select the NEW SETTINGS option to default all the Wizard settings and configure a new system from scratch. Select the CURRENT SETTINGS option to alter an existing configuration or to view the selections made when the preset was configured – note that you can only view these settings if the currently loaded preset was created using the Setup Wizard.

RUN SETUP WIZARD

This Wizard allows you to enter your speaker and amplifier models and automatically sets the crossover, output parametric EQ, driver alignment delay (for bi-amped main speakers), polarity, and limiter settings. The Setup Wizard in the PA2 now stores

all selections made with the preset. So if you load a preset that was created using the Setup Wizard, all the selections made during creation can be viewed at any time by entering the Setup Wizard. The available options in this menu are as follows:

•RUN ALL SETUP

Select this option to run through the entire Setup Wizard (which consists of all Setup Wizard items listed below).

•RUN INPUT SETUP [MONO, STEREO]

Select this option to switch the input configuration between mono or stereo.

•RUN GEQ SETUP [DUAL MONO, STEREO LINKED]

Select this option to switch the GEQ configuration between dual mono or stereo linked.

•RUN SPEAKER/AMP SETUP

Select this option to update speaker and/or amp selections (tunings).

RUN AutoEQ/LEVEL ASSIST

When used with the optional dbx RTA-M measurement microphone, this Wizard helps you balance the left/right speaker levels, the low/mid/high speaker levels (for 2-way and 3-way systems), and automatically equalizes the speakers to the current room environment. After selecting this option, you can select whether you would like to run both the Level Assist and AutoEQ functions, Level Assist only, or AutoEQ only.

The diagrams to the right show the recommended Level Assist and AutoEQ RTA-M mic positions. When running AutoEQ, you will be prompted to select how many mic positions you would like AutoEQ to analyze – the selections are 2, 3, or 4.

The Level Assist and AutoEQ mic position 1 measurements should be taken with the microphone placed equidistant from the speakers, so that the three components form an equilateral triangle, as shown in the Level Assist/AutoEQ Mic Position 1 diagram.

Each time you move the RTA-M mic position it should move approximately 1/3rd the distance the speakers are apart from the initial “RTA-M Mic Placement 1 Reference”, as shown in the AutoEQ Mic Position 2–3 diagrams.

Level Assist/AutoEQ Mic Position 1

Left Speaker

Right Speaker

Speakers & Mic Form an

Equilateral Triangle

RTA-M Mic

Placement 1

AutoEQ Mic Position 3 (Optional)

Left Speaker

Right Speaker

/rd /rd /rd

RTA-M Mic

Placement 1

Reference

RTA-M Mic

Placement 3

AutoEQ Mic Position 2

Left Speaker Right Speaker

/rd /rd /rd

RTA-M Mic

Placement 2

RTA-M Mic

Placement 1

Reference

AutoEQ Mic Position 4 (Optional)

Left Speaker Right Speaker

/rd /rd /rd


	/
RTA-M Mic

Placement 1		rds
Reference

RTA-M Mic

Placement 4

Mic position 4 is the exception as it should be placed 2/3rds the distance from the RTA-M Mic Placement 1 Reference. For example, if your speakers were 20 feet apart, you would move the microphone approximately 7’ (20 * (1/3) = 6.6) from the RTA-M Mic Placement 1 Reference for mic positions 2–3 and approximately 14’ from the RTA-M Mic Placement 1 Reference for mic position 4. However, as a general rule of thumb and for the sake of simplicity, a distance of 5’ should work well for most venues. If the recommended placement of the mic in positions 2–4 are not possible, just place the mic in a position that differs from the other measurement positions.

RUN AFS WIZARD

This Wizard walks you through the process of ringing out the system to provide higher system gain before feedback. This is accomplished by pushing your system into feedback so AFS can detect the initial frequencies which cause feedback and notch them using Fixed filters. When the AFS Wizard is complete, it will automatically enable the Live filters, for automated protection during system use.

WIZARD OPTIONS

The available options in this menu are:

•AutoEQ TARGET [RECOMMENDED PA CURVE, FLAT, REFLECTIVE ROOM]

When a sound system’s frequency response is flattened, it can sound a bit thin on the bottom end. The AutoEQ TARGET option makes up for this by adding a bass boost. Select the RECOMMENDED PA CURVE option (this is the default setting) to allow AutoEQ to automatically enhance the low end. Select the FLAT option if you want the system to be tuned flat when running the AutoEQ Wizard. Select the REFLECTIVE ROOM option when operating a sound system in a room with excessive acoustic reflections; this option will still apply bass boost, as well as a slight attenuation on the higher frequencies to compensate for the excessive reflections.

•LEVEL ASSIST AUTO TRIM [ON, OFF]

When this option is turned on, Level Assist will automatically make fine level adjustments under the hood for any system level mismatches which are 3 dB or less. When this option is turned off, no automatic level adjustments will be made by Level Assist and all system level mismatches will need to be adjusted using the amplifier attenuators until they are within a 1 dB tolerance.

NOTE: Level adjustments made by the LEVEL ASSIST AUTO TRIM function cannot be seen or edited. To clear them you must turn the LEVEL ASSIST AUTO TRIM function off then re-run Level Assist in the Wizard menu.

•MIC RESPONSE [dbx RTA-M, FLAT]

When the dbx RTA-M option is selected, AutoEQ will automatically compensate for the frequency response of the dbx RTA-M microphone, providing more accurate AutoEQ results. Select the FLAT option if using a measurement microphone other than the dbx RTA-M.

•SETUP AUTO NAMING [ON, OFF]

When this option is on, the PA2 will automatically name presets based on the speaker selections made when running the Setup Wizard – the automatically generated preset name can still be edited when storing the preset if desired. When turned off, preset names will remain as they were stored unless you manually edit them and store the changes.

To use the Wizards to configure a new system:

1.Press the WIZARD button.

2.Select the RUN ALL WIZARDS option using the DATA wheel.

3.Select the NEW SETTINGS option by turning the DATA wheel. Press the DATA wheel to confirm your selection.

4.Follow the on-screen instructions. Turn the DATA wheel to edit on-screen selections and press the DATA wheel to confirm on-screen selections.

NOTE: Pressing and holding the WIZARD button at any time during the Wizard procedure will exit the current Wizard and return to the main Wizard menu.

About Speaker & Amplifier Tunings

The PA2 has a Setup Wizard to help you configure your sound system. When you run the Setup Wizard, it will ask you to select the make and model of your speakers and amplifiers from a list of available options, referred to as “tunings”. There are speaker tunings and amplifier tunings. When you select your speakers from the tuning list, the PA2 will automatically configure the crossover, output PEQs, polarity, and in some cases, driver alignment delays. When you select your amplifiers from the tuning list, the PA2 will automatically set your output gains (located in the crossover) and limiter threshold settings.

The PA2 includes a variety of speaker and amplifier tunings from JBL®, Crown®, and more. If your particular tunings are not available in the PA2’s preset tuning list, you can use the DriveRack PA2 control app to access the online database where you can find additional tunings. If you can’t find tunings for your particular speakers or amplifiers, you will need to select the NOT LISTED option in the PA2’s Setup Wizard. The PA2 will automatically set usable default settings which may sound and work just fine, however, you may wish to manually calibrate the PA2 in order to realize the full potential of your sound system and ensure your loudspeakers are protected. Providing full details on how to manually calibrate a sound system is beyond the scope of this manual, but you can find books and free information on the Internet which cover these topics. This section of the manual will cover some of the basics to help get you started.

Loudspeaker manufacturers perform extensive testing on their products and will often provide much of the data necessary to optimize their loudspeaker systems. Check your speaker manufacturer’s website or contact them directly to see if they can provide a speaker tuning data sheet that you can use for manually entering speaker tuning parameters into the PA2. These tuning data sheets will typically include recommended crossover, polarity, driver alignment delay, and sometimes, parametric EQ settings.

Manual System Optimization Tips

TIP: You may want to disable the TIME OUT feature located in the Utility menu before performing any of the following system optimization procedures. This will ensure the PA2 does not revert back to the home screen throughout the process. See ‘Utility’ on page 46 for more information on disabling this feature.

1. Set Crossover Frequency & Filter Settings

The active crossover in the PA2 is used to allow each speaker or driver in a multi-way loudspeaker systems to operate within its frequency range limits. If you can’t find any tuning information for a particular speaker/driver, get the specification sheet for it from the manufacturer. It can give you a good idea where to set crossover frequency settings by providing the speaker or driver’s frequency response, which is the range of frequencies each speaker or driver is capable of reproducing.

If you’re bi-amping main speaker cabinets, the speaker manufacturer should be able to provide you with the recommended crossover frequency settings, and oftentimes, filter types and slope rates. If you’re using subs and can’t find recommended crossover frequency settings, you can dial it in by ear. Typically, subs and mains will be crossed over at around 80–100 Hz, so somewhere in this range is a good place to start. You can then fine-tune the settings from there by ear using full-bandwidth reference material that you are familiar with. When auditioning these crossover settings, it helps to first balance the amp levels for all drivers or cabinets to achieve a frequency response that suits your taste. When auditioning the sound system, don’t turn it up too loud until you’ve calibrated the gain structure – more about this later.

If you’re configuring a simple full-range system then you don’t necessarily need to enter any crossover parameters. However, it is a good idea to take note of the speaker’s frequency response spec and set a high-pass filter at the lower frequency limit specified (45 Hz, for example). This will prevent excessive driver excursion caused by subsonic frequencies and allow for more headroom in your amp. You’ll then want to choose a filter type and slope rate that will effectively roll-off the low end without dramatically compromising the low-end response of the sound system (try auditioning BW 24–BW 48 filter types).

Once the crossover frequencies have been set, it’s time to set the filter types and slope rates. Determining which settings to use here can be a bit difficult. These settings are dependent on the natural frequency response and roll-off characteristics of each speaker cabinet or driver. The goal is to achieve a flat frequency response throughout the loudspeaker system

with seamless transitions throughout the crossover overlap regions. For example, a midrange driver in a 3-way system may inherently exhibit a fairly gradual roll-off up into the high end, whereas the tweeter may require a steep roll-off to protect it from over-excursion. In this case, the midrange driver can be set with a more gradual roll-off to fill in the “gap” created from the steep roll-off of the tweeter. You can use a combination of the RTA and your ears to dial in these settings. Just make sure you don’t exceed the frequency range limitations of the drivers. The difference between the LR and BW filter type options is in the way they sum together. You want to select the filter types that provide the flattest frequency response throughout the crossover overlap regions. Note that it’s okay to mix and match these filter types if that’s what it takes to achieve a flatter system response. Also note that you may not be able to achieve a flat response at this stage of the process due to driver alignment and/or polarity issues. Therefore, just get it as close as you can for now. For more information on LR and BW filters, see “LP TYPE” and “HP TYPE” under the section, ‘Crossover (XOVER)’ on page 41.

2. Set Driver Alignment Delays & Polarity

Once the crossover frequencies, filter types, and slope rates have been set, you’re ready to optimize the system’s phase response. All drivers in the system need to work in unison in order for the sound system to sound its best. This is accomplished by setting driver alignment delays to make up for any physical driver offsets and matching the polarity for all drivers.

The PA2’s output POLARITY parameter (located in the crossover) is used to match polarity between drivers. Some multi-way main speakers will require certain drivers to be polarity inverted when operating in bi-amped mode (bypassing the internal passive crossover network). When selecting any bi-ampable main speaker from the PA2’s speaker tuning list in the Setup Wizard, such polarity inversion will be performed for you automatically. If your multi-way main speaker model isn’t listed in the PA2 and you can’t find tuning information for them, check the loudspeaker’s spec sheet or documentation, or contact the speaker manufacturer as they will usually be able to provide this information.

If you’re unable to find polarity information for your speakers, or just want to verify your drivers are in phase, you can do some investigative work using a tone generator or some sine wave tone samples (which can be downloaded for free online). To

do so, take note of the crossover frequency setting used between the drivers being tested and play a sine wave tone of that frequency through the system.

TIP: Make sure any active AFS modules are turned off before passing sine tones through the PA2. Failing to do so may cause Live AFS filters to be set.

For example, if you’re testing the woofer and high frequency driver in a bi-amped main speaker cabinet and the active crossover frequency between the two is set at 2.5 kHz, play a 2.5 kHz sine wave tone through the system. Both drivers will reproduce the tone simultaneously as long as the crossover frequency is indeed within the range of frequencies both drivers are capable of reproducing. Stand in the “sweet spot” of the venue (the audience position equidistant from the speakers) and invert the polarity in the PA2’s crossover for the low output and find out which setting provides the loudest signal level (note that results are most noticeable if sound pressure levels between the drivers have been matched). The setting which provides the loudest signal level is the one which is more “in phase” and is the setting you should use. If applicable, perform this same test, working your way down through the lower-frequency drivers.

Once polarity is matched for all drivers in the system, you’re ready to optimize the driver alignment delays. The “polarity” test mentioned in the previous paragraph can also be used for determining if driver alignment delay is necessary. Play the selected sine tone through the system (once again, the sine tone frequency should match the set crossover frequency of the drivers being tested) and invert the polarity on the lower driver so that the two drivers are out of phase. If necessary, adjust the drivers’ levels until the most phase cancellation is achieved. Try adjusting the driver alignment delay for each driver to see if either produces more phase cancellation. Set the delay for the most phase cancellation on whichever driver requires it. When done, set the polarity back for proper phase alignment. Repeat this procedure for the remaining speakers/drivers if applicable. For more information on setting driver alignment delays, see ‘Delay’ on page 39.

Changes to all these settings can be difficult to judge when heard in the context of the whole system, but by zeroing in on the specific crossover frequency regions, matching levels, and inverting polarity on one of the drivers, you are free to experiment with different settings to determine the best settings for your loudspeaker system. Adjust each of these parameters until the most phase cancellation is achieved then switch the polarity back so the drivers are once again in phase. Optimizing these parameters using this test will allow your system to work in harmony and improve its magnitude and phase response.

3. Set Gain Structure & Limiters

Now that the crossover settings are optimized and the loudspeaker drivers are in phase, it’s time to calibrate the gain structure of the system. This will provide ample headroom for all system components in the signal chain and optimize your system’s signal-to-noise performance.

Your amplifiers play a vital role in system setup, because they are the last devices in the signal chain before your loudspeakers and offer the greatest amount of gain (that is their job after all). If your amplifiers are setup incorrectly you will not be using

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® Руководство пользователя Îôèöèàëüíûé äèñòðèáüþòåð íà òåððèòîðèè Ðîññèè — êîìïàíèÿ A&T Trade www.attrade.ru
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Îãëàâëåíèå Ââåäåíèå ………………………………………………………………………………………………………………………………………………………. 4 Êëþ÷åâûå âîçìîæíîñòè
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Ìîäóëè îáðàáîòêè è ïàðàìåòðû PA2 ……………………………………………………………………………………………………………..29 Ãðàôè÷åñêèé ýêâàëàéçåð (GEQ)
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Ââåäåíèå DriveRack® PA2 ïðèíàäëåæèò ê íîâîìó ïîêîëåíèþ öèôðîâûõ ïðîöåññîðîâ êîìïàíèè dbx®, ïðåäíàçíà÷åííûõ äëÿ óïðàâëåíèÿ çâóêîâûìè ñèñòåìàìè. Èíòåãðèðóþùèé äèíàìè÷åñêèå ýôôåêòû, ýêâàëàéçåð, ñèñòåìà ïîäàâëåíèÿ îáðàòíîé ñâÿçè, êðîññîâåð, ñóáãàðìîíè÷åñêèé ñèíòåç è çàäåðæêà — ïðîöåññîð DriveRack PA2
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Êëþ÷åâûå âîçìîæíîñòè • 24-áèòíûå ÀÖ-/ÖÀ-ïðåîáðàçîâàòåëè • Öèôðîâàÿ îáðàáîòêà ñòàíäàðòà 48 êÃö/32 áèò ñ ïëàâàþùåé òî÷êîé • Ïðåîáðàçîâàíèå dbx Type IV™ • Ïðîñòàÿ ïîøàãîâàÿ íàñòðîéêà ñèñòåìû, ðåàëèçîâàííàÿ ñ ïîìîùüþ ñåðâèñà Setup Wizard • Ïîìîùíèê Level Assist äëÿ áàëàíñèðîâêè óðîâíåé çâó÷àíèÿ ñèñòåìû
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Èíòåðôåéñ è êîììóòàöèÿ Ëèöåâàÿ ïàíåëü 1 2 3 5 4 6 8 7 10 12 9 11 13 1. Âõîä äëÿ ìèêðîôîíà RTA Ñèììåòðè÷íûé âõîä íà ðàçúåìå XLR, ïðåäíàçíà÷åííûé äëÿ ïîäêëþ÷åíèÿ èçìåðèòåëüíîãî ìèêðîôîíà RTA-M (ïðèîáðåòàåòñÿ îòäåëüíî). Ìèêðîôîí îáåñïå÷èâàåò ïðîñòîòó è îïåðàòèâíîñòü íàñòðîéêè ïàðàìåòðîâ ñèñòåìû ñ
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9. Èíäèêàòîðû INPUT Äàííûå 6-ñåãìåíòíûå ñâåòîäèîäíûå èíäèêàòîðû ïîêàçûâàþò óðîâåíü ñèãíàëà íà âõîäàõ ïðèáîðà è çàïàñ ïî óðîâíþ â äèàïàçîíå îò SIG (íàëè÷èå ñèãíàëà) äî 0 (ïîëíàÿ øêàëà). Ýòè èíäèêàòîðû ïîêàçûâàþò óðîâåíü ñèãíàëà ñðàçó æå ïîñëå ÀÖ-êîíâåðòåðà è çàãîðàþòñÿ â ñëó÷àå, åñëè çíà÷åíèå
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Òûëüíàÿ ïàíåëü 1 4 120V 50/60Hz 2 3 1. 5 6 Ðàçúåì IEC Ñëóæèò äëÿ ïîäêëþ÷åíèÿ êàáåëÿ ïèòàíèÿ ñ ðàçúåìîì IEC èç êîìïëåêòà ïîñòàâêè. Ïðîöåññîð DriveRack PA2 âûïóñêàåòñÿ â äâóõ ðàçíîâèäíîñòÿõ, ñêîíôèãóðèðîâàííûõ äëÿ ðàáîòû îò ýëåêòðîñåòè ñ ðàçíûì íàïðÿæåíèåì ïèòàíèÿ: •~ 100 — 120 Â, 50/60 Ãö •~ 220 —
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6. Ïåðåêëþ÷àòåëè âõîäîâ Äàííûå ïåðåêëþ÷àòåëè óãëóáëåíû âî èçáåæàíèå ñëó÷àéíîãî íàæàòèÿ. Äëÿ òîãî ÷òîáû íàæàòü íà íèõ, âàì ïîòðåáóåòñÿ îáúåêò ñ âûòÿíóòûì êîí÷èêîì, íàïðèìåð, øàðèêîâàÿ ðó÷êà. • Ïåðåêëþ÷àòåëü +4dBu/-10dBv Èñïîëüçóåòñÿ äëÿ îïðåäåëåíèÿ âõîäíîé ÷óâñòâèòåëüíîñòè PA2. Âûáèðàéòå ïîëîæåíèå
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Ïîäêëþ÷åíèå êîìïüþòåðíîé ñåòè Ïðîâîäíîé èíòåðíåò-ñâèò÷åð DriveRack PA2 120V 50/60Hz Ethernet-свитч с включенной функцией DHCP Компьютер, совместимый с Mac или Windows Ïðîâîäíîé èíòåðíåò-ðîóòåð DriveRack PA2 120V 50/60Hz Ethernet-роутер с включенной функцией DHCP 1 WAN 2 3 4 LAN Компьютер,
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1. Ñêà÷àéòå è óñòàíîâèòå áåñïëàòíîå ïðèëîæåíèå DriveRack PA2 èç ìàãàçèíîâ iTunes Store®/Google Play™ èëè ñ ñàéòà www.dbxpro.com. 2. Ïîäêëþ÷èòå ïðÿìîé Ethernet-êàáåëü CAT5, CAT5e èëè CAT6 (ïðèîáðåòàþòñÿ îòäåëüíî) ê ïîðòó Ethernet ïðîöåññîðà DriveRack PA2. 3. Ïîäêëþ÷èòå âòîðîé êîíåö Ethernet-êàáåëÿ ê
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Íà÷àëî ðàáîòû Îáçîð íàâèãàöèè ìåíþ Ïîëüçîâàòåëüñêèé èíòåðôåéñ ïðîöåññîðà DriveRack PA2 ñïðîåêòèðîâàí òàêèì îáðàçîì, ÷òîáû îáåñïå÷èòü ìàêñèìàëüíî ëîãè÷íóþ íàâèãàöèþ áåç áîëüøîãî êîëè÷åñòâà âëîæåíèÿ óðîâíåé ìåíþ. Îáùàÿ ðàñêëàäêà ìåíþ ïîêàçàíà íà ðèñóíêå íèæå. ГЛАВНАЯ СТРАНИЦА Ц Нажать SELECT Главная
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Ðåæèìû ðàáîòû ïðèáîðà Â äàííîì ðàçäåëå êðàòêî îïèñàíû ðåæèìû ðàáîòû ïðîöåññîðà DriveRack PA2 è ïðîöåäóðà àêòèâàöèè êàæäîãî èç ðåæèìîâ. Ñïèñîê ðåæèìîâ DriveRack PA2 Ðåæèì Home Äàííûé ðåæèì ÿâëÿåòñÿ îñíîâíûì. Ïðè âêëþ÷åíèè ïèòàíèÿ DriveRack PA2 àâòîìàòè÷åñêè ïåðåõîäèò â äàííûé ðåæèì è âûâîäèò íà
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Ãëàâíàÿ ñòðàíèöà Dynamic Meters Íà ýòîé ãëàâíîé ñòðàíèöå ïîêàçûâàåòñÿ ïðîöåññû äèíàìè÷åñêîé îáðàáîòêè, ïðîèñõîäÿùèå íà âõîäíîì êîìïðåññîðå è âûõîäíûõ ëèìèòåðàõ. Èíäèêàòîðû â ëåâîé ÷àñòè ýêðàíà îòîáðàæàþò óðîâåíü ñèãíàëà îòíîñèòåëüíî ïîðîãà. Ïèêòîãðàììà [-] óêàçûâàåò íà òî, ÷òî óðîâåíü ñèãíàëà íèæå
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Êîíôèãóðèðîâàíèå DriveRack PA2 Äàííàÿ ñåêöèÿ Ðóêîâîäñòâà îïèñûâàåò ïðîöåäóðó êîíôèãóðèðîâàíèÿ ïðîöåññîðà DriveRack PA2 ñîîòâåòñòâåííî âàøèì ïðèëîæåíèÿì. Íàèáîëåå ïðîñòîé ñïîñîá íàñòðîéêè PA2 — èñïîëüçîâàíèå âñòðîåííûõ ñåðâèñîâïîìîùíèêîâ Wizard. Îäíàêî äëÿ îïûòíûõ çâóêîèíæåðíåðîâ è äàâíèøíèõ
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RUN AutoEQ/LEVEL ASSIST Ïðè ïîäêëþ÷åíèè îïöèîíàëüíîãî èçìåðèòåëüíîãî ìèêðîôîíà dbx RTA-M äàííûé ñåðâèñ Wizard ïîçâîëÿåò ïðàâèëüíî îòñòðîèòü áàëàíñ ïðàâîãî è ëåâîãî êàíàëîâ, óðîâíè êàíàëîâ íèçêèõ/ñðåäíèõ/âûñîêèõ ÷àñòîò (äëÿ äâóõè òðåõïîëîñíûõ ñèñòåì), à òàêæå ïðîèçâåñòè àâòîìàòè÷åñêóþ ýêâàëèçàöèþ
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Àâòîìàòè÷åñêàÿ ýêâàëèçàöèÿ: ïîëîæåíèå ìèêðîôîíà 3 (îïöèîíàëüíî) Левая АС Правая АС / / / / Микрофон RTA T -M Положение 1 (эталонное) Микрофон RTA-M Положение 3 Àâòîìàòè÷åñêàÿ ýêâàëèçàöèÿ: ïîëîæåíèå ìèêðîôîíà 4 (îïöèîíàëüíî) Левая АС Правая АС / / / Микрофон RTA T -M Положение 1 (эталонное) /
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RUN AFS WIZARD Äàííûé ñåðâèñ Wizard ñëóæèò äëÿ àíàëèçà (òàê íàçûâàåìîãî «ïðîçâîíà» èëè “ïðîäóâà”) ñèñòåìû íà ïðåäìåò ïîâûøåíèÿ êîýôôèöèåíòà óñèëåíèÿ ñèñòåìû áåç âîçíèêíîâåíèÿ àêóñòè÷åñêîé îáðàòíîé ñâÿçè. Âî âðåìÿ äàííîé ïðîöåäóðû ñèñòåìà ââîäèòñÿ â ñîñòîÿíèå îáðàòíîé ñâÿçè ñïåöèàëüíî, òàê, ÷òîáû
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Î íàñòðîéêàõ äèíàìèêîâ è óñèëèòåëåé Ïðîöåññîð PA2 ðåàëèçóåò ñåðâèñ Setup Wizard, ïîìîãàþùèé áûñòðî ñêîíôèãóðèðîâàòü çâóêîâóþ ñèñòåìó. Ïðè çàïóñêå ñåðâèñà Setup Wizard ïîëüçîâàòåëþ áóäåò ïðåäëîæåíî âûáðàòü ìîäåëè ñâîèõ àêóñòè÷åñêèõ ñèñòåì è óñèëèòåëåé èç ñïèñêà ñ ãîòîâûìè íàñòðîéêàìè. Ñóùåñòâóþò
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Ïî îêîí÷àíèè íàñòðîéêè ÷àñòîò êðîññîâåðà íàñòóïàåò âðåìÿ íàñòðîéêè òèïîâ ôèëüòðîâ è êðóòèçíû ñïàäà îãèáàþùèõ. Ýòî ìîæåò îêàçàòüñÿ âåñüìà íåïðîñòîé ïðîöåäóðîé. Äàííûå çíà÷åíèÿ çàâèñÿò îò áîëüøîãî ÷èñëà ïàðàìåòðîâ è èíäèâèäóàëüíû äëÿ êàæäîé àêóñòè÷åñêîé ñèñòåìû èëè äèíàìèêà. Çàäà÷à çâóêîðåæèññåðà —
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3. Íàñòðîéêà ñòðóêòóðû òðàêòà óñèëåíèÿ è ëèìèòåðîâ Ïîñëå òîãî, êàê íàñòðîéêè êðîññîâåðîâ áûëè îïòèìèçèðîâàíû, à äðàéâåðû — ñôàçèðîâàíû, ïðèõîäèò âðåìÿ êàëèáðîâêè ñòðóêòóðû òðàêòà óñèëåíèÿ ñèñòåìû. Ýòà ïðîöåäóðà ïîçâîëÿåò äîñòè÷ü ìàêñèìàëüíîãî äèíàìè÷åñêîãî äèàïàçîíà ïî âñåé öåïè ïðîõîæäåíèÿ ñèãíàëà
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Ðèñóíîê 2: ñòðóêòóðà òðàêòà óñèëåíèÿ ïîñëå îïòèìèçàöèè +18 dBu +18 dBu Клиппирование сигнала в усилителе и микшере начинается одновременно на уровне +18dBu 0 Мастер-фейдеры пульта установлены в 0 дБ Регуляторы чувствительности усилителя установлены на -12 дБ Максимальный выходной уровень пульта:
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5. Óñòàíîâèòå ìàñòåð-ôåéäåðû ìèêøåðíîãî ïóëüòà â ïîëîæåíèå åäèíè÷íîãî óñèëåíèÿ (0 dB). Âêëþ÷èòå ãåíåðàòîð ðîçîâîãî øóìà èëè íà÷íèòå âîñïðîèçâåäåíèå ñýìïëà. Åñëè ðîçîâûé øóì èäåò ÷åðåç êàíàë ìèêøåðà, óñòàíîâèòå êàíàëüíûé ôåéäåð â ïîëîæåíèå åäèíè÷íîãî óñèëåíèÿ (0 dB). Ïîäáåðèòå óðîâåíü
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5. Ýêâàëèçàöèÿ ïîä àêóñòèêó ïîìåùåíèÿ Òåïåðü, ïîñëå îïòèìèçàöèè ñèñòåìû, íàñòóïèëî âðåìÿ íàñòðîèòü ñèñòåìíûé ýêâàëàéçåð. Â PA2 âñòðîåí ñåðâèñ AutoEQ Wizard, êîòîðûé ïîçâîëÿåò î÷åíü áûñòðî íàñòðîèòü ïàðàìåòðû ýêâàëèçàöèè ñèñòåìû, ïîýòîìó ìû íàñòîÿòåëüíî ðåêîìåíäóåì âîñïîëüçîâàòüñÿ èìåííî èì.
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5. Âêëþ÷èòå ôóíêöèþ AFS. 6. Ïåðåéäèòå ê ïàðàìåòðó MODE è óñòàíîâèòå äëÿ íåãî çíà÷åíèå FIXED. 7. Ïåðåéäèòå ê ïàðàìåòðó TYPE è óñòàíîâèòå æåëàòåëüíóþ øèðèíó ïîëîñû ôèêñèðîâàííûõ ôèëüòðîâ — äëÿ ìàêñèìàëüíî àêêóðàòíîãî ïîäàâëåíèÿ ÷àñòîò âûáèðàéòå çíà÷åíèå MUSIC. Ïîäðîáíåå îá ýòîì ðàññêàçûâàåòñÿ â
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Ðàáîòà ñ DriveRack PA2 Â äàííîì ðàçäåëå îïèñûâàåòñÿ ðàáîòà ñ DriveRack PA2 ïîñëå òîãî, êàê ñèñòåìà áûëà ñêîíôèãóðèðîâàíà è îïòèìèçèðîâàíà ñ ïîìîùüþ ñåðâèñîâ Wizard. Ñþäà âõîäÿò ðåäàêòèðîâàíèå ïàðàìåòðîâ è óïðàâëåíèå ïðåñåòàìè. Ðåäàêòèðîâàíèå ïàðàìåòðîâ Íèæå îïèñàíà ïðîöåäóðà ðåäàêòèðîâàíèÿ
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Âûçîâ ïðåñåòîâ Äëÿ âûçîâà ïðåñåòîâ ñëåäóåò ïðåæäå âñåãî ïåðåéòè â ðåæèì Preset Recall, çàòåì âûáðàòü ïðåñåò è çàãðóçèòü åãî. Òàêîé ïîðÿäîê ïðåäóñìîòðåí äëÿ òîãî, ÷òîáû ïîñòîðîííèå íå ìîãëè ñëó÷àéíî ïåðåêëþ÷èòü ïðåñåò ñ ïîìîùüþ êîëåñà ââîäà DATA. Ïðîöåäóðà çàãðóçêè ïðåñåòà: 1. Íàæìèòå íà êíîïêó
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Êîïèðîâàíèå ïðåñåòîâ Ïîëüçîâàòåëü ìîæåò êîïèðîâàòü ïðåñåòû èç îäíîé ÿ÷åéêè ïàìÿòè â äðóãóþ. Ýòà ôóíêöèÿ ìîæåò èñïîëüçîâàòüñÿ äëÿ ñîçäàíèÿ àðõèâíîé êîïèè ïðåñåòà èëè ñîçäàíèÿ íåñêîëüêèõ âàðèàíòîâ îäíîãî è òîãî æå ïðåñåòà (íàïðèìåð, ó âàñ óæå åñòü ñóùåñòâóþùèé ñòåðåî ïðåñåò äëÿ áîëüøèõ øîó, à âû
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Ìîäóëè îáðàáîòêè è ïàðàìåòðû PA2 Â äàííîì ðàçäåëå Ðóêîâîäñòâà îïèñûâàþòñÿ âñå äîñòóïíûå ïðîöåññîðíûå ìîäóëè DriveRack PA2 è ñâÿçàííûå ñ íèìè ïàðàìåòðû. Ãðàôè÷åñêèé ýêâàëàéçåð (GEQ) Ìîäóëü 31-ïîëîñíîãî ãðàôè÷åñêîãî ýêâàëàéçåðà ïîçâîëÿåò âðó÷íóþ îòñòðîèòü ÷àñòîòíóþ õàðàêòåðèñòèêó ñèñòåìû è ìîæåò
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• PERFORMANCE Äàííàÿ êðèâàÿ îïòèìèçèðîâàíà äëÿ æèâûõ ìóçûêàëüíûõ âûñòóïëåíèé íà êîíöåðòàõ áîëüøîãî ìàñøòàáà (áîëüøèå êëóáû, çàëû è ò.ä.) ñ ìîùíûìè àêóñòè÷åñêèìè ñèñòåìàìè. Ïî ôîðìå îíà ïîõîæà íà êðèâóþ MYBAND, îäíàêî íèçêèå ÷àñòîòû â äàííîì ñëó÷àå íå óñèëèâàþòñÿ, à êðàéíèé âåðõ ïðèïîäíÿò ÷óòü áîëåå
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BAND (1–8) FREQUENCY [20 Hz – 20 kHz] Äàííûé ïàðàìåòð ñëóæèò äëÿ âûáîðà öåíòðàëüíîé/ãðàíè÷íîé ÷àñòîòû âûáðàííîãî ôèëüòðà. BAND (1–8) GAIN [-12 dB – +12 dB] Äàííûé ïàðàìåòð ñëóæèò äëÿ íàñòðîéêè êîýôôèöèåíòà óñèëåíèÿ/îñëàáëåíèÿ âûáðàííîãî ôèëüòðà. BAND (1–8) Q [0.1 – 15.909] Äàííûé ïàðàìåòð äîñòóïåí
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Ñðàâíåíèå òî÷íîñòè ðàáîòû ôèëüòðîâ Графический Гц ÑÎÂÅÒ: ñèñòåìà AFS ðàáîòàåò íàèëó÷øèì îáðàçîì â ñëó÷àå íàëè÷èÿ íà âõîäàõ PA2 ñèãíàëà äîñòàòî÷íîãî óðîâíÿ. Äëÿ ýòîãî òðåáóåòñÿ ïðàâèëüíî îòñòðîèòü ñòðóêòóðó òðàêòà óñèëåíèÿ ìåæäó ìèêøåðíûì ïóëüòîì è PA2. Åñëè óðîâåíü ñèãíàëà ñëèøêîì íèçêèé, ñèñòåìà
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MODE [FIXED, LIVE] Äàííûé ïàðàìåòð îïðåäåëÿåò, áóäåò ëè àëãîðèòì AFS èñïîëüçîâàòü ôèëüòðû ðåàëüíîãî âðåìåíè èëè ôèëüòðû ñ ôèêñèðîâàííîé ÷àñòîòîé. Ïðè ïåðâîíà÷àëüíîé «ïðîäóâêå» çàëà íà ïðåäìåò àêóñòè÷åñêîé îáðàòíîé ñâÿçè âûáåðèòå çíà÷åíèå FIXED äëÿ íàñòðîéêè ôèêñèðîâàííûõ ôèëüòðîâ (âî âðåìÿ ðàáîòû
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ÇÀÌÅ×ÀÍÈÅ: Åñëè çíà÷åíèå ïàðàìåòðà FIXED FILTERS èçìåíåíî ïîñëå íàñòðîéêè ôèëüòðîâ, ôèëüòðû áóäóò ñáðàñûâàòüñÿ ïî îäíîìó, ïî ìåðå óìåíüøåíèÿ/óâåëè÷åíèÿ çíà÷åíèÿ ïàðàìåòðà. Íàïðèìåð, åñëè óìåíüøèòü çíà÷åíèå ïàðàìåòðà FIXED FILTERS íà 1, áóäåò ñáðîøåí ïîñëåäíèé íàñòðîåííûé ôèêñèðîâàííûé ôèëüòð,
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36–56 HZ LEVEL [0% – 100%] Äàííûé ïàðàìåòð ñëóæèò äëÿ îïðåäåëåíèÿ óðîâíÿ ýôôåêòà ñóá-ñèíòåçàòîðà â ïîëîñå ÷àñòîò îò 36 Ãö äî 56 Ãö. Åñëè çâóê ñòàíîâèòñÿ ñëèøêîì «óõàþùèì» èëè «ðû÷àùèì», ïîïðîáóéòå ïðèáðàòü ýòîò ïàðàìåòð. Äàííûé ýôôåêò ìîæåò çâó÷àòü ïî-ðàçíîìó â ðàçëè÷íûõ ïîìåùåíèÿõ — çíà÷åíèå,
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Ïàðàìåòðû êîìïðåññîðà Äëÿ ïåðåõîäà â ìåíþ êîìïðåññîðà íàæìèòå íà êíîïêó COMP. Âðàùàéòå êîëåñî DATA äëÿ ïðîñìîòðà ñïèñêà äîñòóïíûõ ïàðàìåòðîâ. Íàæìèòå íà êîëåñî DATA äëÿ ðåäàêòèðîâàíèÿ ïàðàìåòðà. COMPRESSOR [ON, OFF] Ïàðàìåòð ñëóæèò äëÿ âêëþ÷åíèÿ è îòêëþ÷åíèÿ êîìïðåññîðà. THRESHOLD [-60 dB — 0 dB]
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Çàäåðæêà Â ïðîöåññîðå PA2 èìååòñÿ äâà ðàçíûõ ìîäóëÿ çàäåðæêè: âõîäíîé (ïðåäâàðèòåëüíàÿ, áýêëàéíîâàÿ çàäåðæêà) è âûõîäíîé (ìåæäðàéâåðíûé). Âûõîäíûå ìîäóëè çàäåðæêè (îáîçíà÷åííûå, êàê HIGH, MID è LOW) èñïîëüçóþòñÿ äëÿ ñîãëàñîâàíèÿ ôàçû äðàéâåðîâ. Îáû÷íî ñîãëàñîâàíèå ôàç òðåáóåòñÿ òîëüêî ïðè
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Êðîññîâåð (XOVER) Êðîññîâåð èñïîëüçóåòñÿ äëÿ ðàçäåëåíèÿ øèðîêîïîëîñíîãî ñèãíàëà íà íåñêîëüêî ÷àñòîòíûõ ïîëîñ. Ýòî ïîçâîëÿåò êàæäîé êîëîíêå èëè êàæäîìó îòäåëüíîìó äèíàìèêó ðàáîòàòü â îïòèìàëüíîé ïîëîñå ÷àñòîò. Åñëè èñïîëüçóåòñÿ àêòèâíûé êðîññîâåð, ïîäîáíûé óñòàíîâëåííîìó â ïðîöåññîðå PA2,
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Ëèìèòåð Ëèìèòåðû èñïîëüçóþòñÿ äëÿ òîãî, ÷òîáû îãðàíè÷èòü (ëèìèòèðîâàòü) óðîâåíü çâóêîâîãî ñèãíàëà, ÷òîáû îí íå ïðåâûøàë çàäàííûé ïîðîã. Ïî ñâîåé ñóòè ëèìèòåðû ÿâëÿþòñÿ êîìïðåññîðàìè ñ âûñîêèì êîýôôèöèåíòîì êîìïðåññèè (îáû÷íî îò 10:1 è âûøå). Ïàðàìåòð êîýôôèöèåíòà êîìïðåññèè â ëèìèòåðå PA2
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+6 dBu (-14 dBFS) Точка клиппирования усилителя 3 дБ Резерв Безопасная зона Сигнал клиппируется Порог лимитера -17 dB (-17 dBFS) +20 dBu (0 dBFS) Точка клиппинга выхода PA2 Ïðèìåð íàñòðîéêè ïîðîãà ëèìèòåðà OVEREASY [OFF, 1–10] Îäíèì èç âàæíûõ ïàðàìåòðîâ ëèìèòåðà ÿâëÿåòñÿ òàê íàçûâàåìûé «ïåðåãèá»
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GRAPH HOLD [0.5 ñåê – 5.0 ñåê] Íàñòðîéêà âðåìåíè çàäåðæêè íà äèàãðàììå ïèêîâûõ çíà÷åíèé. Ïîäáåðèòå çíà÷åíèå, ïîçâîëÿþùåå ëåãêî êîíòðîëèðîâàòü ïèêè äàæå ïîñëå èõ ïðîõîæäåíèÿ. SIGNAL GENERATOR [OFF, PINK, WHITE] Âêëþ÷åíèå è îòêëþ÷åíèå âñòðîåííîãî ãåíåðàòîðà çâóêîâîãî ñèãíàëà. Äàííûé ãåíåðàòîð
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Ôóíêöèè âêëþ÷åíèÿ ïèòàíèÿ Äàííûå ôóíêöèè ïîçâîëÿþò ñáðîñèòü ïðåñåòû è íàñòðîéêè DriveRack PA2, çàáëîêèðîâàòü óïðàâëåíèå ñ ëèöåâîé ïàíåëè è ñêîíôèãóðèðîâàòü PA2 òàê, ÷òîáû ïðè âêëþ÷åíèè ïèòàíèÿ âûõîäû âñåãäà áûëè çàìüþòèðîâàíû. Äëÿ äîñòóïà ê äàííûì ôóíêöèÿì ñëåäóåò íàæàòü è óäåðæèâàòü
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Âîññòàíîâëåíèå çàâîäñêèõ íàñòðîåê (Factory Reset) Îïåðàöèÿ Factory Reset âîññòàíàâëèâàåò âñå ïðåñåòû è íàñòðîéêè ìåíþ óòèëèò ïðîöåññîðà PA2 â çíà÷åíèÿ ïî óìîë÷àíèþ. ÂÍÈÌÀÍÈÅ: ïðè âûïîëíåíèè îïåðàöèè Factory Reset âñå ïîëüçîâàòåëüñêèå ïðåñåòû ñáðàñûâàþòñÿ â çíà÷åíèÿ ïî óìîë÷àíèþ. Âîññòàíîâèòü
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Ïðèìåðû êîíôèãóðàöèé Â äàííîé ñåêöèè ðóêîâîäñòâà ìû îïèøåì ðàçëè÷íûå âèäû êîíôèãóðàöèé, â êîòîðûõ ìîæíî ïðèìåíÿòü ïðîöåññîð DriveRack PA2. Íàðÿäó ñ ðèñóíêàìè è äèàãðàììàìè ìû äàäèì ïîäðîáíûé òåêñòîâûé êîììåíòàðèé. Èñïîëüçóéòå ýòó èíôîðìàöèþ äëÿ êîììóòàöèè è êîíôèãóðèðîâàíèÿ ïðîöåññîðà DriveRack PA2
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Ïîëíîäèàïàçîííîå ïîäêëþ÷åíèå, òèï 2 (ñàáâóôåð + ñàòåëëèòû) Ïîëíîäèàïàçîííîå ïîäêëþ÷åíèå òàêæå ìîæíî ïðèìåíÿòü äëÿ ñèñòåì «ñàáâóôåð(û)+»ñàòåëëèò(û)» â ñëó÷àå ðàáîòû ñ àêòèâíûìè ñàòåëëèòàìè è îäíèì-äâóìÿ àêòèâíûìè ñàáâóôåðàìè èç òîé æå ñåðèè, ÷òî è ñàòåëëèòû (òî åñòü äàííûå ìîäåëè äîëæíû áûòü
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Ïîëíîäèàïàçîííîå ïîäêëþ÷åíèå òèï 3 (âñå âûõîäû â øèðîêîïîëîñíîì ðåæèìå) Íåêîòîðûå ñèñòåìû îçâó÷èâàíèÿ ìîãóò ïîòðåáîâàòü èñïîëüçîâàíèÿ áîëåå äâóõ ïîëíîäèàïàçîííûõ àóäèîëèíèé ñ PA2. Ïðîöåññîð PA2 ïðåäóñìàòðèâàåò âîçìîæíîñòü ðàáîòû è ñ òàêèìè ñèñòåìàìè, îäíàêî îíè íå ÿâëÿþòñÿ òèïè÷íûìè è íå ìîãóò áûòü
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Äâóõïîëîñíîå ïîäêëþ÷åíèå (2-Way) Äàííîå ïðèëîæåíèå ïðåäíàçíà÷åíî äëÿ ïîäêëþ÷åíèÿ ïîëíîäèàïàçîííûõ ñàòåëëèòîâ ñ ñàáâóôåðàìè èëè äâóõóñèëèòåëüíûõ (bi-amp) ñèñòåì áåç ñàáâóôåðîâ. Â äàííîì òèïå ïîäêëþ÷åíèÿ PA2 ðàçäåëÿåò ñèãíàë íà äâå ÷àñòîòíûå ïîëîñû è ïåðåäàåò îäíó ïîëîñó ÷åðåç âûõîäû LOW íà ñàáâóôåðû
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Òðåõïîëîñíîå ïîäêëþ÷åíèå (3-Way) Äàííûé òèï êîíôèãóðàöèè ïðåäíàçíà÷åí äëÿ ñèñòåì, èñïîëüçóþùèõ ñàòåëëèòû, ïîäêëþ÷åííûå ïî äâóõóñèëèòåëüíîé ñõåìå (bi-amp) ñ ñàáâóôåðàìè. Â ýòîì ñëó÷àå ñèãíàë ðàçäåëÿåòñÿ íà òðè ÷àñòîòíûå ïîëîñû, ãäå íèçêèå ÷àñòîòû îòïðàâëÿþòñÿ ÷åðåç âûõîäû LOW íà ñàáâóôåðû, ñðåäíèå —
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Ñïèñîê ïðåñåòîâ Ïîëüçîâàòåëüñêèé ïðåñåò 1, 26, 51 2, 27, 52 3, 28, 53 4, 29, 54 Çàâîäñêîé ïðåñåò 76 77 78 79 Íàçâàíèå Îïèñàíèå ST.Full Range M.FullRange ST.2WaywST.Sub ST.2WaywM.Sub 5, 30, 55 80 M.2WaywST.Sub 6, 31, 56 81 M.2WaywM.Sub 7, 32, 57 82 ST.3WaywST.Sub 8, 33, 58 83 ST.3WaywM.Sub 9, 34, 59
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Ïðèëîæåíèå DriveRack PA2 Control Ïðèëîæåíèå DriveRack PA2 Control äîñòóïíî äëÿ óñòðîéñòâ, ñîâìåñòèìûõ ñ îïåðàöèîííûìè ñèñòåìàìè Android™, iOS®, Mac® è Windows®. Äàííîå ïðèëîæåíèå ÿâëÿåòñÿ áåñïëàòíûì è ìîæåò áûòü çàãðóæåíî èç ìàãàçèíîâ iTunes Store®, Google Play™ èëè ñ ñàéòà www.dbxpro.com.
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Óñòðàíåíèå íåïîëàäîê ïðè ðàáîòå â ñåòè Åñëè ïðè ïîäêëþ÷åíèè PA2 ê ïðèëîæåíèþ DriveRack PA2 ó âàñ âîçíèêàþò ïðîáëåìû, ïîïðîáóéòå âûïîëíèòü ñëåäóþùèå øàãè äëÿ ðàçðåøåíèÿ ñèòóàöèè. 1. Âêëþ÷àéòå ñíà÷àëà ñåòåâîé ñâèò÷åð/ðîóòåð è òîëüêî ïîòîì — PA2. Óáåäèòåñü, ÷òî ðîóòåð èëè ñâèò÷åð âêëþ÷åí è èõ çàãðóçêà
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Ïðèëîæåíèå Îáíîâëåíèÿ ïðîãðàììíîãî îáåñïå÷åíèÿ USB- èëè Ethernet-ïîðò, ðàñïîëîæåííûé íà òûëüíîé ïàíåëè PA2, ìîæíî èñïîëüçîâàòü äëÿ îáíîâëåíèÿ âñòðîåííîãî ïðîãðàììíîãî îáåñïå÷åíèÿ. Ñêîììóòèðóéòå USB-ïîðò c êîìïüþòåðîì Windows® PC äëÿ îáíîâëåíèÿ âñòðîåííîãî ÏÎ ñ ïîìîùüþ ïðèëîæåíèÿ PA2 Firmware Update
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Ðàñïàéêà êàáåëåé Ethernet-êàáåëè Ïðÿìîé òèï («Straight-Through») Èñïîëüçóéòå ïðÿìûå Ethernet-êàáåëè CAT5, CAT5e èëè CAT6 äëÿ ïîäêëþ÷åíèÿ PA2 ê ñåòåâîìó ñâèò÷åðó/ðîóòåðó. Íà äèàãðàììå íèæå ïîêàçàíà ðàñïàéêà êàáåëÿ ýòîãî òèïà. Ýòî ñàìûé ðàñïðîñòðàíåííûé íà ñåãîäíÿøíèé äåíü òèï Ethernet-êàáåëåé.
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Êðîññîâåðíûé òèï («Crossover») Êðîññîâåðíûå êàáåëè ìîæíî èñïîëüçîâàòü òîëüêî ñ ñåòåâûìè ñâèò÷åðàìè/ðîóòåðàìè, ïîääåðæèâàþùèìè àâòîìàòè÷åñêîå ðàñïîçíàâàíèå MDI/MDIX. Äàííàÿ âîçìîæíîñòü ïîçâîëÿåò ñâèò÷åðó/ðîóòåðó îïðåäåëÿòü, êàáåëü êàêîãî òèïà ïîäêëþ÷åí (ïðÿìîé èëè êðîññîâåðíûé) è àâòîìàòè÷åñêè
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Ñõåìû ðàñïàéêè àóäèîêàáåëåé К ПРИЕМНИКУ (ВХОД) ОТ ИСТОЧНИКА (ВЫХОД) РУКАВ (ЗЕМЛЯ) 2 1 КОЛЬЦО (МИНУС) РУКАВ (ЗЕМЛЯ) ПЛЮС ПЛЮС МИНУС 3 ЗЕМЛЯ ЗЕМЛЯ ШАРИК (ПЛЮС) РУКАВ (ЗЕМЛЯ) РУКАВ (ЗЕМЛЯ) МИНУС 2 3 СТЕРЕОДЖЕК >> ”ПАПА” XLR К ПРИЕМНИКУ (ВХОД) ОТ ИСТОЧНИКА (ВЫХОД) 1 МИНУС ШАРИК (ПЛЮС) “МАМА” XLR >>
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Ãàáàðèòû 438.15 мм 482.6 мм 149.225 мм 44.45 мм 56 dbx DriveRack PA2. Ðóêîâîäñòâî ïîëüçîâàòåëÿ
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Òåõíè÷åñêèå õàðàêòåðèñòèêè ÀÍÀËÎÃÎÂÛÅ ÂÕÎÄÛ Êîëè÷åñòâî âõîäîâ: 2 ëèíåéíûõ âõîäà, 1 ìèêðîôîííûé âõîä RTA Êîììóòàöèÿ: 2 ðàçúåìà XLR «ìàìà» íà ëèíåéíûõ âõîäàõ, 1 XLR «ìàìà» íà ìèêðîôîííîì âõîäå RTA Òèï: ýëåêòðîííî-ñáàëàíñèðîâàííûé/ñ ôèëüòðàöèåé ðàäèî÷àñòîòíûõ ïîìåõ Ñîïðîòèâëåíèå: > 50 êÎì Ìàêñèìàëüíûé
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Телефон: (801) 566-8800 Веб-сайт: dbxpro.com Поддержка: dbxpro.com/en-US/support dbx Professional Products зарегистрированная торговая марка Harman © 2015 Harman Все права защищены DriverRack ® PA2 Руководство Пользователя PN: 5044138-B Äîïîëíèòåëüíûå ðåñóðñû Âåá-ñàéò dbx http://www.dbxpro.com
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