231s

Dual Channel 31-Band Equalizer

When the pros need an EQ, they turn to dbx. With a proven track record that spans four decades, dbx® EQs are the industry standard for touring, studios, and audio installations. With the dbx heritage of revered pro EQs, the 231s meets the needs of the most demanding sound reinforcement environments, while offering the simplicity of straightforward controls.

Frequency range: to 50 kHz; FREQUENCY RANGE
Dynamic range: >112 dB; DYNAMIC RANGE
Weight: 2.81 kg; WEIGHT

Supplied and supported in Pakistan by KYAF, the official HARMAN Professional distributor.

AT A GLANCE

Specifications

to 50 kHz
Frequency range: >112 dB
Dynamic range: 2.81 kg
Weight: 3.5"
Dimensions: 1/4" TRS, female XLR
Inputs: 1/4" TRS, male XLR
Output Connectors: 50kHz, +0.5/-3dB
Frequency Response: Typically >95dB
Signal-to-Noise Ratio

Input Connectors	1/4" TRS, female XLR (pin 2 hot)
Input Type	Electronically balanced/unbalanced, RF filtered
Input Impedance	Balanced 40k ohm, unbalanced 20k ohm
Max Input	>+21dBu balanced or unbalanced
CMRR	>40dB, typically >55dB at 1kHz
Output Connectors	1/4" TRS, male XLR (pin 2 hot)
Output Type	Impedance-balanced/unbalanced, RF filtered
Output Impedance	Balanced 100 ohm, unbalanced 50 ohm
Max Output	>+21dBu balanced/unbalanced into 2k ohm or greater; >+18dBm balanced/unbalanced (into 600 ohm)
Bandwidth	20Hz to 20kHz, +0.5/-1dB
Frequency Response	50kHz, +0.5/-3dB
Dynamic Range	Typically >112dB
Signal-to-Noise Ratio	Typically >95dB
THD+Noise	<0.003%
Interchannel Crosstalk	<-90dB, 20Hz to 20kHz
Bypass Switch	Bypasses the graphic equalizer section in the signal path
Low cut Switch	Activates the 50Hz 12dB/octave high-pass filter
Range Switch	Selects either +/- 6dB or +/-12dB slider boost/cut range
Operating Voltage	100 – 240VAC 50/60Hz
Power Consumption	15W
Power Connector	IEC receptacle
Unit Weight	2.81 kg
Shipping Weight	3.58 kg
Dimensions	3.5" (8.9cm) H x 6"(15.24cm) D x 19" (48.26cm) W

	231s	215s
Input Connectors	1/4" TRS, female XLR (pin 2 hot)	1/4" TRS, female XLR (pin 2 hot)
Input Type	Electronically balanced/unbalanced, RF filtered	Electronically balanced/unbalanced, RF filtered
Input Impedance	Balanced 40k ohm, unbalanced 20k ohm	Balanced 40 kOhm, unbalanced 20 kOhm
Max Input	>+21dBu balanced or unbalanced	>+21dBu balanced or unbalanced
CMRR	>40dB, typically >55dB at 1kHz	>40dB, typically >55dB at 1kHz
Output Connectors	1/4" TRS, male XLR (pin 2 hot)	1/4" TRS, male XLR (pin 2 hot)
Output Type	Impedance-balanced/unbalanced, RF filtered	Impedance-balanced/unbalanced, RF filtered
Output Impedance	Balanced 100 ohm, unbalanced 50 ohm	Balanced 100 ohm, unbalanced 50 ohm
Max Output	>+21dBu balanced/unbalanced into 2k ohm or greater; >+18dBm balanced/unbalanced (into 600 ohm)	>+21dBu balanced/unbalanced into 2 kOhm or greater; >+18dBm balanced/unbalanced (into 600 ohm)
Bandwidth	20Hz to 20kHz, +0.5/-1dB	20Hz to 20kHz, +0.5/-1dB
Frequency Response	50kHz, +0.5/-3dB	50kHz, +0.5/-3dB
Dynamic Range	Typically >112dB	Typically >112dB
Signal-to-Noise Ratio	Typically >95dB	Typically >95dB
THD+Noise	<0.003%	<0.003%

FOR DESIGNERS AND INSTALLERS

Downloads

dbx's own files, opened here on the KYAF site.

dbx 231s — 231s
Dual Channel 31-Band Equalizer

DESIGN

Every part of the 231s, labelled.

FEATURES

What the 231s brings.

The dbx 231s includes two 31-band channels of 1/3-octave equalization, ±12 dB input gain, switchable ±6 dB or ±12 dB boost/cut range, 20mm nonconductive sliders, an intuitive user interface, and output level metering. From its extended 10Hz to 50kHz frequency response and 112 dB dynamic range to the quality componentry and meticulous attention to detail, the 231s offers exceptional sound and rugged reliability that guarantees you will always sound your best.