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By doing so you will ensure that your disposed product undergoes the necessary treatment, recovery and recycling and thus prevent potential negative effects on the environment and human health. European Contact: Your local dbx Sales and Service office or harman music Group...
DriveRack ® Introduction Congratulations on your purchase of the dbx DriveRack 4800 or 4820 system processor! Designed ® ® INTRODUCTION to provide “Everything you need between the mixer and the power amps,” the 4800 and 4820 provide incredible flexibility, sonic excellence, and intuitive control for performance applications. From the pow-...
Proof-of-purchase is considered to be the burden of the consumer. 2. dbx warrants this product, when bought and used solely within the U.S., to be free from defects in materials and workmanship under normal use and service.
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DriveRack ® Introduction Driverack 4800/4820 user Manual ®...
DriveRack Section 1 ® Getting Started 1.1 - rear Panel 4800/4820 1. Iec Power cord receptacle The 4800 and 4820 come with a power supply that will accept voltages ranging from 100V-240V at fre- quencies from 50Hz-60Hz. An IEC cord is included for both a US and European style AC mains plug. 2.
DriveRack ® Section 1 Getting Started 9. Zone control Inputs 1-12 (rJ-45) These RJ-45 connections are used to receive control information from up to 12 ZC wall panel control- lers. 10. Word clock Bnc connection This connection allows the DriveRack 4800 or 4820 to lock to a master system clock. It is not termi- nated.
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DriveRack Section 1 ® Getting Started OUtPUt is used to select and/or enter the Input and Output setup module. rOUte/MIx is used to select and/or enter either the Input or Output Router or Mixer module. INsert 1 is used to select and/or enter the first Insert function in either the Input or Output.
DriveRack ® Section 1 Getting Started Getting Started 9. Status LeDs This cluster of four LEDs indicate the following functions: ClIP - indicates either A/D, D/A, or DSP clipping. syNC - indicates DSP syncing to an internal clock, AES/EBU, CobraNet, or Wordclock input. rs-232 - indicates PC connection via RS-232.
DriveRack Section 1 ® Getting Started ClIP - indicates either A/D, D/A, or DSP clipping. syNC - indicates DSP syncing to an internal clock, AES/EBU or Wordclock input. rs-232 - indicates PC connection via RS-232. lINK/aCt - indicates connection to and/or activity on an Ethernet network. 6.
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Recommended screen resolution: 1024 x 768 pixels or higher Installation • Install the System Architect GUI software from either the Harman Professional website at www.harmanpro.com or from the dbx website at www.dbxpro.com or from the included CD ROM onto your computer.
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DriveRack Section 1 ® Getting Started Driverack 4800/4820 user Manual ®...
DriveRack Section 2 ® Driverack Philosophy 2.1 - Driverack 4800/4820 Philosophy The philosophy of the DriveRack 4800 and 4820 revolves around the concept of two elements: Attributes and Presets. attributes Attributes are parameters that are global like sample rate, analog I/O gain structure, or RTA microphone pre- amp gain.
DriveRack Section 3 ® front Panel operation The DriveRack 4800 is modal in its operation with different types of navigation depending on the mode that the unit is in. For each of the modes, navigation has been optimized to ensure speed and accuracy. 3.1 - navigation The DriveRack 4800 uses three types of navigation to access system attributes and parameters, Matrix navigation, Scroll navigation, and Page navigation.
DriveRack ® Section 3 front Panel operation scroll Navigation - This navigation is used in the Utility menus, as well as in storing, recalling and deleting presets. It is very useful for finding menu offerings that are located within another sub-menu. For example, the RTA mic pre gain is located within the Gain/Trim sub-menu of the Utility.
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DriveRack Section 3 ® front Panel operation edit Preset Mode - In Edit mode, access to any of the processing functions is no more than two button presses away. 1. Return to Edit mode by pressing the PRESET button. 2. To select the input or output channel that you would like to edit, press the INPUT or OUTPUT button that corresponds with that channel.
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DriveRack ® Section 3 front Panel operation 5. Navigate to the location where you want to paste and press the NEXT/PASTE button. 6. To exit Copy/Paste mode and return to Edit mode, press the PRESET button. recall Preset Mode - Any preset in the preset list can be recalled, as long as it is within the Preset Minimum and Maximum range set in the Utility menu.
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DriveRack Section 3 ® front Panel operation 1. While in Edit mode, press and hold the STORE/DELETE button for two seconds. 2. Select the preset you would like to delete. 3. Press the STORE/DELETE button to delete the preset, and once more to confirm the deletion. 4.
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DriveRack ® Section 3 front Panel operation 2. Use the PREV and NEXT buttons to navigate through the pages of meters. 3. To exit Meter menus and return to Edit mode, press the PRESET button. Wizard Mode - The Wizard mode will provide you with setup functions. The Wizard mode is not func- tional in v1.00.
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DriveRack Section 3 ® front Panel operation 5. Once the desired configuration is created, press and hold the RTA/LOAD button to load the configura- tion. 6. To exit Configuration and return to Edit mode without making any changes to the configuration, press the PRESET button.
DriveRack Section 4 ® Software operation 4.1 - Driverack Philosophy The most basic storage elements of the DriveRack 4800 and 4820 are the Attribute and the Preset. Attributes are global parameters for that unit, while Presets are snapshots of the current processing functions or modules, their location in the signal path, and their parameters (see Section 2.1 for more information about Attributes and Presets).
DriveRack ® Section 4 Software operation Module View features While changes to the parameters within the module are instantaneous, every Module View includes the OK and Cancel buttons to either accept or reject these changes before closing the window. The Module View also provides the Recycle Icon in the upper right hand corner, allowing the window location to be reused upon opening a new module.
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DriveRack Section 4 ® Software operation Device View features Besides access to the processing functions, the Device View offers many other features, some of which can be found as pull-downs in the Windows Menu. Items in the Windows Menu include the File Menu, Edit Menu, Tools Menu, View Menu, and Help Menu.
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DriveRack DriveRack ® ® Section 4 GuI Software overview Software operation Device View Menu In the View Menu, you can select to Dock the window in the Venue View or leave it floating. Device Help Menu In the Help Menu, you can select from Contents, Index, or Search as ways to search for topics in the Help File.
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DriveRack Section 4 ® Software operation Meters The Meters in the lower left hand corner of the Device View are real time meters, and they show the cur- rent input and output levels if the unit is online. The meters can be turned off to reduce the amount of network traffic if so desired.
DriveRack DriveRack DriveRack ® ® ® Section 4 Section 4 GuI Software overview GuI Software overview Software operation 4.3.3 - Venue View The Venue View is the most encompassing perspective, providing a “global” view of the entire venue or system. The Venue View provides many features that make System Architect superior in the way that it provides control of an audio system.
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DriveRack Section 4 Section 4 ® GuI Software overview Software operation Venue edit Menu In the Edit menu, System Architect provides the ability to Undo or Redo commands as well as Cut, Copy, Paste and Delete selected units in the Venue. The Find… command lets you find a specific unit in the system either by name or ID#.
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DriveRack DriveRack DriveRack DriveRack DriveRack DriveRack DriveRack ® ® ® ® ® ® ® Section 4 Section 4 Section 4 Section 4 Section 4 Section 4 GuI Software overview GuI Software overview GuI Software overview GuI Software overview GuI Software overview GuI Software overview Software operation Properties are all of the user-defined display options for any venue view, device, custom control panel, or...
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DriveRack Section 4 ® Software operation Venue Panel Menu The Panel Menu option lets you create and manage Custom Control Panels, with functions including add, remove, import, export and activate a control panel. Venue tools Menu The Tools Menu lets you manage and control the way System Architect functions. Network Wizard locates all HiQnet devices physically connected to the network and provides the ability to change their HiQnet and communications address.
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DriveRack ® Section 4 Software operation Venue Window Menu The Window Menu manages the main Venue View window. It provides you with the following options: New adds a new Venue View to the main window. New Horizontal Group tiles the tab groups horizontally. New vertical Group tiles the tab groups vertically.
DriveRack Section 5 ® In use Under normal operation the most common modes are Configuration, Edit, Store and Recall Preset. The simplest way to illustrate these modes in use is by example; this will be done for both the Front Panel Navigation as well as the GUI.
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DriveRack ® Section 5 In use 2. Press the INPUT A button and the EQ 1 button to move to the Input Graphic EQ. 3. Turn Encoder knob #3 to link the Graphic EQs on Inputs 1 and 2. 4. Press the INSERT 2 button and turn the Encoder #1 knob to select the Compressor. 5.
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DriveRack Section 5 ® In use 7. Rename the Input by pressing Encoder #2 and using Encoder #1 and Encoder #2 to select characters and advance the cursor. 8. Store the name by pressing the STORE/DELETE button. 9. To change the Mid Router to a Mixer, press the Output 6 button and then the MIX/ROUTE button, then turn Encoder #1 to select Mixer.
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DriveRack ® Section 5 In use With three pages per Bandpass filter set, it should be noted that there will be nine total pages in this function; these pages can either be accessed by continuing to press NEXT PAGE or by pressing the next OUTPUT CHANNEL button.
DriveRack Section 5 ® In use Now that the preset has had its configuration changed and has been edited, we can Store it: 1. Press the STORE/DELETE button to enter Store mode. 2. Select a location for this new preset in the preset table by turning Encoder Knob #1. (A preset can either be stored over an existing preset or stored in an empty location.) 3.
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DriveRack ® Section 5 In use 2. Select the Configuration Wizard. 3. Use the links on the left side of the page to quickly jump to the desired locations. 4. Select the EQs link in the Input Section, and click the check box to link the Input Channel A and B Graphic EQs.
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DriveRack Section 5 ® In use Driverack 4800/4820 user Manual ®...
DriveRack Section 6 ® Detailed Parameters The DriveRack 4800 and 4820 provide a wealth of processing capabilities. This processing can be broken into two distinct sections: Input Processing and Output Processing. Both the Input and Output sections offer two types of processing functions, Fixed and Insert. Fixed processing modules can be linked and/or switched with a similar type of function, but they are fixed in their location in the DSP path.
DriveRack ® Section 6 Detailed Parameters 6.2 - Input router The Input Router lets you select from any of the input sources and adjust the Master Gain. Pink Noise On/Off and Gain are also available in this module. Selected Source Switch Allows selection between the input Sources (Analog 1-4, AES/EBU 1-4, CobraNet 1-4).
DriveRack Section 6 ® Detailed Parameters 6.3 - Input Graphic eQ The DriveRack 4800/4820 provides a 31 band Graphic EQ on each input channel. This EQ offers up to +/-15dB of gain at each of the 31 ISO frequency centers. eQ on/off switch This turns the Graphic EQ on and off.
DriveRack ® Section 6 Detailed Parameters 6.4 - Input 9-Band Parametric eQ The DriveRack 4800 and 4820 offer a second EQ (EQ2), after the input Graphic EQ, that can be config- ured as either a Graphic or 9-Band Parametric EQ. The 9-Band Parametric EQ provides Frequency, Gain and Q control for each EQ band.
DriveRack Section 6 ® Detailed Parameters 6.5 - Input Delay Each input channel of the DriveRack 4800 and 4820 provide up to 680 mSec of Input Delay. Delay on/off switch This turns the input channel Delay module on and off. Delay fader This sets the amount of delay time and is adjustable in either 10 or 20 µSec steps (one sample at either 96 or 48 kHz).
DriveRack ® Section 6 Detailed Parameters 6.6 - output Mixer Each output DSP channel can be configured with either a Mixer or Router. The Output Mixer lets you mix between signals coming from the input DSP channels. Master Gain and Muting of this Mixer is also available.
DriveRack Section 6 ® Detailed Parameters 6.7 - output router The Output Router lets you select from any of the input channels, adjust the Master Gain and Mute the output. Selected Source Switch Allows selection between the input channels (Channels A-D). Master Gain fader Provides Gain control for the Router module (–inf to +20dB).
DriveRack ® Section 6 Detailed Parameters 6.8 - output Bandpass filter/crossover The DriveRack 4800/4820 provides a Bandpass Filter on each output channel. These filters can be config- ured as Crossovers so you can adjust the frequency content of the adjacent output channels. Band Select switch This selects the specific band or channel to be adjusted.
DriveRack Section 6 ® Detailed Parameters 6.9 - output 6-Band Parametric eQ The DriveRack 4800 and 4820 offer an Output 6-Band Parametric EQ on each output channel. The 6-Band Parametric EQ provides Frequency, Gain and Q control for each of the 6 EQ bands. eQ on/off switch This turns the Parametric EQ on and off.
DriveRack ® Section 6 Detailed Parameters 6.10 - output Delay The output channels of the DriveRack 4800 and 4820 provide up to 1360 mSec of configurable Delay, this means that the Delay can be allocated to where it is needed. Delay on/off switch This turns the output channel Delay module on and off.
) Insert ® The DriveRack 4800/4820 offers the exclusive dbx Advanced Feedback Suppression (AFS) feedback elimination module as an Insert processing function on the Input channels. This feedback suppression algorithm reduces feedback by first finding the location of a feedback frequency and then placing a very sharp notch filter at the exact frequency that is feeding back.
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DriveRack ® Section 6 Detailed Parameters type switch The Type switch toggles the AFS function between different sensitivities and filter Q settings corresponding to the type of application. The different Types are Speech (Highest Sensitivity, Bandwidth = 1/5 octave and Q=7.25), Music Low (High Sensitivity, Bandwidth = 1/10 octave and Q=14.5), Music Medium (Medium Sensitivity, Bandwidth = 1/20 octave and Q=29), and Music High (Lowest Sensitivity, Bandwidth = 1/80 octave and Q=116).
DriveRack Section 6 ® Detailed Parameters 6.12 - automatic Gain control (aGc) Insert The Automatic Gain Control Insert is available in the DriveRack 4800 and 4820 in both the Input and Output Insert modules. Automatic Gain Control (or AGC) is used to keep the average level of a signal constant.
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DriveRack ® Section 6 Detailed Parameters Window fader This parameter adjusts the amount of variation in the output and ranges from 1 to 10dB. For most applica- tions a Window of +/- 2 or 3 dB maintains the signal adequately. attack fader The Attack fader adjusts how fast the AGC will increase gain after the signal drops below the Target.
DriveRack Section 6 ® Detailed Parameters 6.13 - autoWarmth Insert ® The Fletcher-Munson Equal-Loudness curves show that the perception of low frequency signals decreases quickly with decreasing volume. The DriveRack 4800 and 4820 offer the AutoWarmth Insert module on ® each output (Insert 1) to compensate for this perceived loss in low frequencies.
This switch turns the Compressor module on and off. overeasy fader OverEasy is a characteristic of dbx Compressors and is essentially a “soft-knee” function that occurs at about the compression threshold. On analog dbx Compressors, OverEasy could only be turned on or off, but in the digital domain this parameter can have a range.
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DriveRack Section 6 ® Detailed Parameters auto on/off switch Auto mode dynamically sets the Attack, Hold, and Release parameters in real time, based on the incoming signal. This switch turns the Auto mode on and off. attack fader The Attack parameter sets how quickly the compressor starts to compress the signal after it passes the threshold.
The DriveRack 4800/4820 offers a De-Esser module available on the Input Inserts. This De-Esser effect is ideal for removing unwanted vocal sibilance and is based on the original dbx 902 De-Esser module. A De-Esser works by inserting a high frequency boost EQ filter in the detector path of a Compressor to “bias”...
DriveRack Section 6 ® Detailed Parameters 6.16 - noise Gate The DriveRack 4800 and 4820 provide a Noise Gate Insert that can be placed in both the Input and/or the Output section. A Noise Gate is used to remove unwanted low-level noise in a system. The basic premise behind a Noise Gate is that gain reduction or Gating will be applied to the channel unless there is a signal that is above some Threshold.
This turns the Limiter module on and off. overeasy fader OverEasy is a characteristic of dbx Compressor/Limiters is essentially a “soft-knee” function that occurs about the threshold. On analog devices, OverEasy can only be turned on or off, but in the digital domain this parameter can have a range.
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DriveRack Section 6 ® Detailed Parameters attack fader The Attack parameter sets how quickly the Limiter starts to reduce the gain of the signal after it passes the Threshold. The Attack can range between 0.1 mSec and 200 mSec. The Attack time is dynamically set while in Auto mode.
DriveRack ® Section 6 Detailed Parameters 6.18 - notch filter Insert The 4800 and 4820 units offer 6-Band Notch Filter that can be inserted in the Input section. The Notch filter is designed to provide a significant amount of cut in very narrow frequency bandwidths to remove room resonances and other unwanted artifacts.
DriveRack Section 6 ® Detailed Parameters 6.19 - SubHarmonic Synthesizer Insert The SubHarmonic Synthesizer module is designed to provide additional low frequency content to audio signals and is available as an Insert in both the Input and Output sections. It has been optimized to enhance audio signals in a variety of professional applications, including nightclub and dance DJ mixing, theater and film sound, music recording, live music performance and broadcasting.
DriveRack Section 7 ® utilities As stated earlier, the Utility menus contain many of the attributes of the DriveRack 4800 and 4820 devices. With the exception of Access Rights (which are stored manually), these attributes are stored instantly as they are changed. They are broken down into sub menus in both the GUI and on the unit. While these sub menus are different in their arrangement, all the same attributes are available.
In the Network Utility menu you can view and access the network settings, including: Mac address – Hard coded from dbx, this cannot be changed. IP address – This can be set via DHCP (see below), Auto IP, or manually.
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DriveRack Section 7 ® utilities note: Setting up a basic network The DriveRack 4800 and 4820 come with an included Ethernet cable. The DriveRack 4800/4820 is set up at the factory for DHCP allowing it to be assigned an IP address by a DHCP Server. If there is no DHCP Server present, the DriveRack will then default to Auto-IP, meaning that it will give itself a semi- random IP address.
Impedance: 110 ohms A/D Performance Type: dbx Type IV™ Conversion System Dynamic Range: 113 dB unweighted, 116 dB A-weighted Type IV™ dynamic range: 126 dB with transient material, A-weighted, 22 kHz BW 123 dB with transient material, unweighted, 22 kHz BW...
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Optional, Jensen JT-11 and JT-123-dbx ® CobraNet I/O: Optional ® Control: Ethernet, RS-232, Optional dbx ZC Wall Panels Power Requirements: 100V to 240V 50/60Hz, 45 Watts Dimensions: 3.5” x 19” x 12.15” Weight: 11 lbs. (14 lbs. w/audio transformers) Shipping Weight: 12.5 lbs.
DriveRack ® Appendix a.7 - Zone controller Wiring and Installation Zone controller Wiring All Zone Controllers can be wired serially or in parallel. To wire in series, each Zone Controller must have an identification number (ID) chosen using the DIP switches on the side of the controller (see diagram A). Each controller must have a unique number chosen although there may be multiple Zone Controllers controlling a single zone, or a single Zone Controller that controls multiple outputs.
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DriveRack Appendix ® Diagram a Diagram B ID# 1 ID# 4 80-1342-A 80-1342-A Diagram c Driverack 4800/4820 user Manual ®...
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DriveRack ® Appendix Cable Specification: EIA/TIA 568A Standard (pin to pin) 24 AWG wire RJ-45 RJ-45 (8-Position) (8-Position) White/Green -VREF Green -Zone 1 White/Orange -Zone 2 Blue -Zone 3 White/Blue -Zone 4 Orange -Zone 5 White/Brown -Zone 6 Brown -GND Diagram B Diagram a Diagram c...
DriveRack ® Appendix a.9 - factory reset factory reset Information In the event that a reset is required, the DriveRack 4800/4820 offers you the option of performing a “Hard” or “Soft” Factory Reset. Power-up Button functions All Power-Up Functions will use the MUTE 1 through MUTE 8 buttons. All Power-Up Functions require a button(s) to be pressed and held as the unit power is turned on.
DriveRack Appendix ® a.10 - ethernet networking This section of the appendix provides a step-by-step guide on how to properly connect the DriveRack 4800 or 4820 to a Local Area Network (LAN) for several different network architectures. The first topology is a simple direct connection using the provided Ethernet cable.
DriveRack ® Appendix DHcP (Dynamic Host configuration Protocol) This is a protocol for automatically assigning IP addresses to devices on a network. With dynamic (DHCP) addressing, a device might have a different IP address every time it connects to the network. DHCP relies on a DHCP server to assign and manage IP addresses.
DriveRack Appendix ® NOte: The following steps will overwrite these settings, so you will need to keep this information to restore your network settings. e. Select the ‘Obtain an IP address automatically’ radio button. f. (XP Only) Click on the Alternate Configuration tab and make sure that ‘Automatic private IP address’...
DriveRack ® Appendix units utilizes IP broadcast packets. These packets will not travel through internet routers and even some high end core switches. In a larger more complex network, proxy is used to tell the software where on the network to look for the 4800/4820 devices. There only needs to be one proxy setup for each group of units that are on the same local network.
DriveRack Appendix ® • If the proxy link initially fails to connect, the user must go offline and then go back online before the proxy connection will be re-established. • Firewall Considerations: The 4800/4820 uses port 3804 (udp and tcp) to communicate with the System Architect software.
DriveRack ® Appendix a.10.8 - copyrights Portions of code are covered by the following copyrights: X Consortium Copyright (C) 1996 X Consortium Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associ- ated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following con-...
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DriveRack Appendix ® All advertising materials mentioning features or use of this software must display the following acknowledge- ment: This product includes software developed by the University of California, Lawrence Berkeley Laboratory. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1.
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DriveRack ® Appendix Driverack 4800/4820 user Manual ®...
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8760 South Sandy Parkway Sandy, utah 84070 Phone: (801) 568-7660 fax (801) 568-7662 Int’l fax: (801) 568-7583 Questions or comments? e-mail us at: customer@dbxpro.com visit our World Wide Web home page at: www.dbxpro.com 18-0353-B...