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User Manual 4800/4820 Complete Equalization & Loudspeaker Management System.
WARNING FOR YOUR PROTECTION READ THESE INSTRUCTIONS: KEEP THESE INSTRUCTIONS HEED ALL WARNINGS FOLLOW ALL INSTRUCTIONS THE APPARATUS SHALL NOT BE EXPOSED TO DRIPPING OR SPLASHING LIQUID AND NO OBJECT FILLED WITH LIQUID, SUCH AS VASES, SHALL BE PLACED ON THE APPARATUS.
U.K. MAINS PLUG WARNING A molded mains plug that has been cut off from the cord is unsafe. Discard the mains plug at a suitable disposal facility. NEVER UNDER ANY CIRCUMSTANCES SHOULD YOU INSERT A DAMAGED OR CUT MAINS PLUG INTO A 13 AMP POWER SOCKET. Do not use the mains plug without the fuse cover in place.
Table of Contents Introduction 0.1 DriveRack 4800/4820 Features ............................. ii 0.2 Service Contact Info ............................................ iii 0.3 Warranty .............................................................. iii Section 1 - Getting Started 1.
Appendix A.1 Specifications ...................................................... 68 A.2 Block Diagram ................................................... 70 A.3 Preset Table ........................................................ 71 A.4 Crossover Table .
DriveRack ®.
FEATURES CUSTOMER SERVICE INFO WARRANTY INFO INTRODUCTION DriveRack ® Introduction.
Introduction DriveRack ® 4800/4820 User Manual ii Congratulations on your purchase of the dbx ® DriveRack ® 4800 or 4820 system processor! Designed 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.
0.2 - Service Contact Info If you require technical support, contact dbx Customer Service. Be prepared to accurately describe the problem. Know the serial number of your unit - this is printed on a sticker attached to the top panel. If you have not already taken the time to fill out your warranty registration card and send it in, please do so now.
Introduction DriveRack ® 4800/4820 User Manual DriveRack ® iv.
REAR PANEL FRONT PANEL SOFTWARE INSTALLA- TION Getting Started Section 1 DriveRack ®.
Getting Started 2 Section 1 1.1 - Rear Panel 4800/4820 1 23 4 5 6 7 89 10 11 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.
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.
Getting Started 4 Section 1 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.
Section 1 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.
Section 1 Getting Started 6 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.
Minimum System Requirements for System Architect are: 1GHz, Pentium III processor 512MB RAM Windows 2000 or XP service pack 2 Recommended System Requirements: 3GHz, Pentium 4 processor 1GB RAM Recomme.
Getting Started 8 Section 1 DriveRack ® DriveRack ® 4800/4820 User Manual.
PRESETS ATTRIBUTES DriveRack Philosophy Section 2 DriveRack ®.
Section 2 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 .
NAVIGATION MODES Front Panel Operation Section 3 DriveRack ®.
Front Panel Operation 12 Section 3 The DriveRack 4800 is modal in its operation with different types of navigation depending on the mode that the unit is in.
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.
Front Panel Operation 14 Section 3 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.
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.
Front Panel Operation 16 Section 3 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.
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.
Front Panel Operation 18 Section 3 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.
MODULE VIEW DEVICE VIEW VENUE VIEW Software Operation Section 4 DriveRack ®.
Software Operation 20 Section 4 4.1 - DriveRack Philosophy The most basic storage elements of the DriveRack 4800 and 4820 are the Attribute and the Preset.
Software Operation Section 4 21 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.
Software Operation 22 Section 4 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.
GUI Software Overview Section 4 DriveRack ® 23 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.
Software Operation 24 Section 4 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.
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.
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#.
Properties are all of the user-defined display options for any venue view, device, custom control panel, or controls in System Architect. Different items provide different editable properties, such as changing the name, background color, or background image.
Software Operation 28 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.
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.
Software Operation 30 Section 4 DriveRack ® DriveRack ® 4800/4820 User Manual.
31 FRONT PANEL OPERATION SOFTWARE OPERATION In Use Section 5 DriveRack ®.
In Use 32 Section 5 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.
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. Turn Encoder knob #3 to link the Compressors on Inputs 1 and 2.
In Use 34 Section 5 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.
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.
In Use 36 Section 5 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.
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.
In Use 38 Section 5 DriveRack ® DriveRack ® 4800/4820 User Manual.
DETAILED PARAMETERS Detailed Parameters Section 6 DriveRack ®.
Detailed Parameters Section 6 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.
Detailed Parameters Section 6 41 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).
Detailed Parameters Section 6 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.
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.
Detailed Parameters Section 6 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).
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. Channels A-D Provides gain control for each of the input channels (–inf to +20dB).
Detailed Parameters Section 6 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 ® 4800/4820 User Manual 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.
Detailed Parameters Section 6 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 ® 4800/4820 User Manual 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.
Detailed Parameters Section 6 6.11 - Advanced Feedback Suppression (AFS ® ) 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.
DriveRack ® 4800/4820 User Manual 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.
Detailed Parameters Section 6 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.
DriveRack ® 4800/4820 User Manual 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.
Detailed Parameters Section 6 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.
DriveRack ® 4800/4820 User Manual 6.14 - Compressor Insert The DriveRack 4800 and 4820 offer an Insert Compression function on both the Input and Output Inserts. This function is modeled from classic dbx Compressors such as the 160 and the 165. Compressor On/Off switch This switch turns the Compressor module on and off.
Detailed Parameters Section 6 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.
DriveRack ® 4800/4820 User Manual 6.15 - De-Esser Insert 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.
Detailed Parameters Section 6 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.
DriveRack ® 4800/4820 User Manual 6.17 - Limiter Insert The DriveRack 4800/4820 units offer a Limiter in the Output Insert position. A Limiter operates on the same principles as a compressor (see section 6.14) but it is designed and used more for system protection rather than musical dynamics control.
Detailed Parameters Section 6 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 ® 4800/4820 User Manual 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.
Detailed Parameters Section 6 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.
UTILITIES Section 7 Utilities DriveRack ®.
Utilities Section 7 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.
DriveRack ® 4800/4820 User Manual 7.4 - Real Time Clock The DriveRack 4800 and 4820 have an internal Real Time Clock. This clock allows the devices to load a preset based on a time schedule, for automated system changes. The real time clock is set by syncing the DriveRack device to a computer from which it extracts the clock information.
Utilities Section 7 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.
DriveRack ® Appendix.
Appendix A.1 - Specifications Analog Inputs: (4) Connectors: Female XLR Type: Electronically balanced, RF filtered Impedance: >50k ohms Maximum Input Level: Software selectable for: +28, +26, +24, .
DriveRack ® 4800/4820 User Manual Input Insert Processing: Two selectable Insert Processing blocks per input Type: Noise Gate, Compressor, Auto Gain Control, De-Esser, Sub-Harmonic Synth, Advanced Fe.
Appendix DriveRack ® DriveRack ® 4800/4820 User Manual 70 A.2 - Block Diagram.
DriveRack ® 4800/4820 User Manual A.3 - Preset Table A.4 - Crossover Table Appendix 71 i r c s e D e m a N r e b m u N t e s e r P p n o i t n e p O e d i W 1 n o s r e t l i f s s a p d n a b t n e d n e p e d n i g n i d i v o r p n e p o y l e t e l p m o c s i t e s e r p s i h T t u o h c a e p .
Appendix A.5 - Digital I/O and Clocking Clock Sour ce 4800/4820 4800/4820 4800/4820 75 Ω Coaxial Cable BNC “T” 75 Ω BNC Te rminator DriveRack ® DriveRack ® 4800/4820 User Manual 72 A.
DriveRack ® 4800/4820 User Manual 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).
Appendix Diagram A RJ45 CONNECT ON LY TO ZONE CONTROLLE R INPU T . IEC60065 UL-6500 80-1342-A RJ45 CONNECT ON LY TO ZONE CONTROLLE R INPU T . IEC60065 UL-6500 80-1342-A ID #1 ID #4 Diagram B Diagram C.
DriveRack ® 4800/4820 User Manual Appendix 75 Diagram A Diagram B Diagram C RJ-45 (8-P osition) RJ-45 (8-P osition) Orange White/Blue Green Blue White/Br ow n Br ow n -VREF -Zone 1 -Zone 2 -Zone 4 -Z.
Appendix DriveRack ® DriveRack ® 4800/4820 User Manual 76 A.8 - ZC-4 Wiring Diagram.
DriveRack ® 4800/4820 User Manual 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.
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 ® 4800/4820 User Manual 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.
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’ is selected.
DriveRack ® 4800/4820 User Manual 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.
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 ® 4800/4820 User Manual 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 char.
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.
Appendix DriveRack ® DriveRack ® 4800/4820 User Manual 85.
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.
Een belangrijk punt na aankoop van elk apparaat Harman 4820 (of zelfs voordat je het koopt) is om de handleiding te lezen. Dit moeten wij doen vanwege een paar simpele redenen:
Als u nog geen Harman 4820 heb gekocht dan nu is een goed moment om kennis te maken met de basisgegevens van het product. Eerst kijk dan naar de eerste pagina\'s van de handleiding, die je hierboven vindt. Je moet daar de belangrijkste technische gegevens Harman 4820 vinden. Op dit manier kan je controleren of het apparaat aan jouw behoeften voldoet. Op de volgende pagina's van de handleiding Harman 4820 leer je over alle kenmerken van het product en krijg je informatie over de werking. De informatie die je over Harman 4820 krijgt, zal je zeker helpen om een besluit over de aankoop te nemen.
In een situatie waarin je al een beziter van Harman 4820 bent, maar toch heb je de instructies niet gelezen, moet je het doen voor de hierboven beschreven redenen. Je zult dan weten of je goed de alle beschikbare functies heb gebruikt, en of je fouten heb gemaakt die het leven van de Harman 4820 kunnen verkorten.
Maar de belangrijkste taak van de handleiding is om de gebruiker bij het oplossen van problemen te helpen met Harman 4820 . Bijna altijd, zal je daar het vinden Troubleshooting met de meest voorkomende storingen en defecten #MANUAl# samen met de instructies over hun opplosinge. Zelfs als je zelf niet kan om het probleem op te lossen, zal de instructie je de weg wijzen naar verdere andere procedure, bijv. door contact met de klantenservice of het dichtstbijzijnde servicecentrum.
