dbx 1231 - Dual Channel 31-Band Graphic Equalizer with 6 or 15 dB Switchable Boost/Cut and RF Filtered I/O's

BH #DB1231 • MFR #DBX1231V
dbx 1231 - Dual Channel 31-Band Graphic Equalizer with 6 or 15 dB Switchable Boost/Cut and RF Filtered I/O's
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  • This item is noncancelable and nonreturnable.

dbx 1231 Overview

The 1231 is dual channel, 31 band 1/3 octave graphic equalizer. It was designed to meet the needs of the most demanding sound reinforcement environments, while offering the simplicity of straightforward controls.

The sliders of the 1231 are 45mm center detent, with two selectable boost/cut ranges for precise gain adjustments. The unit features high pass filters with bypass, active balanced input and output connections, chassis/signal ground lift capabilities for quick hum isolation and an internal power supply. Multiple input and output configurations are provided for ease of use. The XLR and 1/4" TRS connectors use active balanced, low noise circuitry, with the addition of barrier strips.

The 1231 was precision engineered to provide years of maintenance-free operation in any application. The magnetically isolated transformer, RF-filtered inputs and outputs, and power-off hard-wire relay bypass with two second power up delay, ensures compatibility with all types of installations.

Dual channel 31 band 1/3 octave graphic equalizer
Switchable Boost/Cut range between +/-6dB and +/-15dB
45mm center detent sliders
Fixed high-pass filters
Variable input level controls
Active balanced input and output connections
RF filtered inputs and outputs
Chassis/signal ground lift capability
UPC: 691991400049

dbx 1231 Specs

Filter TypeGraphic
Number of Channels2
Inputs2 x XLR, 2 x 1/4" TRS phone, barrier strip
Output2 x XLR, 2 x 1/4" TRS phone, barrier strip
Maximum Input Level+21dBu
Frequency Bands31 x 2, ISO spacing
Bandwidth1/3 octave
Range (Boost/Cut)+/-6dB or +/-15dB selectable
Maximum Output Level+21dBu
Frequency Response10Hz to 50kHz
Dynamic Range115dB
Dimensions3U rack, 7 15/16" deep
SpecialtiesPower-off hardwire relay bypass with 2-second power-up delay
Packaging Info
Package Weight13.84 lb
Box Dimensions (LxWxH)22.5 x 11.5 x 7.6"
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Browsing History


what is the power voltage of this item.. is it 220 or 110?
Asked by: Lamberto T.
According to the specs, it can handle either one.
Answered by: Stephen T.
Date published: 2018-08-27
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