DBX DriveRack 4820 Loudspeaker Management System, 4 x XLR Analog Inputs, 8 x XLR Analog Outputs

DBX
DBX DriveRack 4820: Picture 1 thumbnail DBX DriveRack 4820: Picture 2 thumbnail

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About DBX DriveRack 4820

The dbx DriveRack 4820 is a highly configurable signal processing system that is used in touring and large installation applications. The unit provides all of the DSP functionality of the 4800 with a tamper-proof front panel for secure installation use. With the very powerful DSP engine, multiple analog and digital inputs and outputs and comprehensive insert processing functions, the unit is able to provide every processing function needed "between a mixer and the power amplifiers."

Each input features a 31-band graphic EQ, followed by a 9-band parametric equalizer. Two slots are provided for "dropping-in" a range of processors, which are followed by variable time delay circuits. Each input can have the processors linked with adjacent channels, which in turn can access any of the outputs. The output blocks start with variable crossover selections and are followed by a parametric EQ, two insert slots and variable time delays. An Advanced Feedback Suppression Wizard helps tame feedback with little sonic degradation of the source signal.

Since the unit has no front-panel control, the DriveRack 4820 comes with System Architect Control software for Windows XP to provide programming duties. All the front-panel controls of the DriveRack 4800 are mirrored in the software, which in addition, provides networking configuration set-up. From signal routing, EQ and band-pass filters, to classic dbx dynamics and feedback suppression, all the processing needed for tour sound or installation is available within the unit along with sonic excellence.

DBX DriveRack 4820 Features

  • 48 and 96 kHz operation
  • 4 analog and AES/EBU inputs
  • 8 analog and AES/EBU outputs
  • Full Bandpass Filters, Crossover and Routing Configurations with Bessel, Butterworth and Linkwitz-Riley filters
  • 31-Band Graphic and 9-band Parametric EQ on every input
  • 6-band Parametric EQ on every output
  • Loudspeaker Cluster and Driver Alignment Delays
  • Selectable DSP inserts on all inputs and outputs including Classic dbx Compression, Limiting and Advanced Feedback Suppression among others
  • Ethernet HiQnet networking control
  • Optional dbx ZC wall panel control
  • Optional Jensen I/O Transformers

DBX DriveRack 4820 Specifications

Inputs: Number of Inputs
4
Inputs: Connectors
Female XLR
Inputs: Type
Electronically balanced/RF filtered
Inputs: Impedance
>50k ohm
Inputs: Maximum Input Level
Software selectable for: +28, +26, +24, +22, +20, +18, +16, +14 dBu
Inputs: CMRR
>40 dB typical, >55 dB at 1 kHz
Digital Inputs
(4) AES/EBU Channels
Digital Inputs Connectors
Female XLR
Digital Inputs Type
Transformer Isolated, RF filtered
Digital Inputs Impedance
>110 ohms
RTA Inputs
(1) Analog
RTA Inputs Connectors
Female XLR
RTA Inputs: Gain Range
10dB to 50dB in 10dB increments
Analog Outputs: Inputs
8
Analog Outputs: Connectors
Male XLR
Analog Outputs: Type
Electronically balanced, RF filtered
Analog Outputs Impedance
30 ohms
Analog Outputs Max Output Levels
Software selectable for: +24, +22, +20, +12, +8, +4 dBu
Digital Outputs
(8) AES/EBU Channels
Digital Outputs Connectors
Male XLR
Digital Outputs Type
Transformer Isolated, RF filtered
Digital Outputs Impedance
>110 ohms
A/D Performance: Type
dbx TYPE IV Conversion System
A/D Performance: Dynamic Range line
>114 dB unweighted, 116dB A-weighted
A/D Performance: Type IV dynamic range
128dB with transient material, A-weighted, 22kHz BW 126 dB with transient material, unweighted, 22 kHz BW 120 dB typical with program material, A-weighted, 22 kHz BW
A/D Performance: Sample Rate
96kHz
A/D Performance: Wordlength
24 bits
D/A Performance: Dynamic Range
112 dB unweighted, 115 dB A-weighted
D/A Performance: Sample Rate
96kHz
D/A Performance: Wordlength
24 bit
System Performance: Dynamic Range
112dB unweighted, 115dB A-weighted
System Performance: Internal Processing
32 bit floating point
System Performance: THD + Noise
0.004% typical at +4 dBu, 1 kHz, 0 dB input gain
System Performance: Frequency Response
20 Hz- 40 kHz, +/-0.5 dB
System Performance: Crosstalk
<-85 dB at 1 kHz, 0 dB input gain
Processing: Pre EQ Type
One 31-band Graphic EQ on each input One EQ that is switchable between 31-band and 9-band Parametric on each input
Processing: Range
+/- 12dB
Input Insert Processing
Two selectable Insert Processing blocks per input
Input Insert Processing Type
Noise Gate, Compressor, Auto Gain Control, De-Esser, Sub-Harmonic Synth, Advanced Feedback Suppression
Processing: Input Delay Length
Up to 682 mSec available
Processing: Routing/Mixing
4-input mixer available at each output allowing any input to be sent or mixed to any output
Output Insert Processing
Two selectable Insert Processing blocks per output
Output Insert Processing Type
Noise Gate, AutoWarmth, Compressor, Auto Gain Control, Peak Limiter, Sub-Harmonic Synth, Advanced Feedback Suppression
X-Over Filter Configs
1x1, 1x2, 1x3, 1x4, 1x5, 1x6, 1x7, 1x8, 2x2, 2x3, 2x4 2x5, 2x6, 2x7, 2x8, 3x3, 3x4, 3x6, 3x7, 4x4, 4x5, 4x8
X-Over Filter Configs Type
Bessel 6, 12, 18 and 24 dB per Octave Butterworth 6, 12, 18 and 24 dB per Octave Linkwitz-Riley 12, 24, 36 and 48 dB per Octave
Polarity
Positive and Negative
Phase Control
0 to -180 degrees in 5 degree increments
Output Delay Length
1365 mSec shared between the outputs
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" / 8.89 x 48.26 x 30.86cm
Weight
11 lbs. / 4.98 kg
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