DBX DriveRack 220i System Processor with AFS Advanced Feedback Suppression

SKU: DBX220I MFR: 220I
DBX 220i Feedback Control: Picture 1 thumbnail DBX 220i Feedback Control: Picture 2 thumbnail

List Price: $787.44

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About DBX 220i Feedback Control

The dbx DriveRack 220i is a two-channel, fully-featured signal processor for fixed audio installations and provides both microphone (with phantom power) and line level input. It is used for providing feedback suppression and processing for microphones prior to a mixer, or for sending music and paging to two different locations, with the ability to specify what source each zone receives.

For line input/output gain and processing, the unit needs to be programmed from a Windows based computer, utilizing the included software. RS-232 connectors are available on both the front- and rear-panels. The software provides control over all of the processing functions and includes twenty internal programs with up to ten being user configurable. Microphone gain can be physically adjusted from the rear-panel.

The signal processing functions include input gain and mixing, graphic or parametric equalization, compression, limiting, gating, automatic gain control (AGC), ducking, de-essing, advanced feedback suppression (AFS), notch filters, sub-harmonic synthesis, matrix mixing, band-pass filtering and delay. Front panel controls include program selection and load buttons, along with dual, six-segment input/output LED meters and clip LEDs.

External control is possible via optional ZC wall mounted controllers that fit into standard wall boxes and allow for remote program selection, output level control and muting. Up to six such controls can be used with the DriveRack 220i. All program memory is non-volatile, providing program security should power or the computer fail.

DBX 220i Feedback Control Features

  • Dual channel signal processor with an Advanced Feedback Suppression (AFS) algorithm and comprehensive dynamics and EQ processing
  • Provides graphic and parametric EQ, band-pass filters and de-essing
  • Dynamics include compression and limiting, automatic gain control, ducking and noise gating
  • Up to 1.3 seconds of delay
  • Includes twenty factory set-ups with up to ten user configurable
  • Allows for remote hardware control via optional wall-mounted Zone Controllers
  • Security lockout
  • RS-232 PC GUI control with included Windows software

DBX 220i Feedback Control Specifications

Analog Inputs: Number of Inputs
(2) Switchable line or mic inputs
Analog Inputs: Connectors
Female XLR line inputs and Euroblock
Analog Inputs: Type
Electronically balanced/RF filtered
Analog Inputs: Impedance
>50k ohm
Analog Inputs: Maximum Input Level
Analog Inputs: CMRR
> 40dB, typically >55db @ 1kHz
Analog Inputs: Mic Pre gain
30 to 60dB
Analog Inputs: Mic EIN
< 110dB, 22Hz-22kHz, 150 ohm
Analog Inputs: Mic Phantom Power
Analog Outputs: Number of Outputs
Analog Outputs: Connectors
Male XLR and Euroblock
Analog Outputs: Type
Electronically balanced, RF filtered
Analog Outputs: Impedance
120ohm balanced, 60ohm unbalanced
Analog Outputs: Maximum Output Level
A/D Performance: Type
dbx Type IV Conversion System
A/D Performance: Dynamic Range line
>113 dB A-weighted, >110 dB unweighted
A/D Performance: Type IV dynamic range
>119 dB, A-weighted, 22kHz BW117 dB, unweighted, 22kHz BW
A/D Performance: Sample Rate
D/A Performance: Dynamic Range
112 dB A-weighted, 109dB unweighted
System Performance: Dynamic Range
>110 dB A-weighted, >107dB unweighted
THD + Noise
0.003% typical at +4dBu, 1kHz, 0dB gain
Frequency Response
20Hz - 20kHz, +/- 0.5dB
Interchannel Crosstalk
>110dB, 120dB typical
Crosstalk input-output
Power Requirements Operating voltage
100 VAC, 50/60Hz, 120 VAC, 60Hz, 230VAC 50/60Hz
Dimensions (W x H x D)
19" x 1.75" x 7.7" / 48.2 x 4.44 x 19.5 cm
5.5 lbs (2.5 kg)
Mfr #
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