Dbx 231 Dual 31 Band Graphic Equalizer

With a lineage extending back to the revered 12 and 20 Series graphic equalizers, the dbx® 231 easily lives up to the dbx reputation at a price point which can find a home in the tightest of budgets. Besides including two 31-band channels of 1/3-octave equalization, the 231 also offers ±6 or ±12 dB boost/cut range; XLR, 20mm faders and 1/4" inputs; nonconductive nylon sliders; and an intuitive user interface with comprehensive output and gain reduction metering. As always, the inevitable result of our meticulous attention to detail and top-quality componentry is exceptional sound, performance, and reliability.

The 2-Series represents a major step forward in the performance of entry-level graphic equalizers. From its amazing 10Hz to 50kHz frequency response, to its 108dB dynamic range and internal toroidal transformer, the 2-Series offers out of this world specifications with a down to earth price point. Sure to find a home in the studio, on tour and with installed sound venues, the 2-Series is destined to take its rightful place in the lineage of great dbx® signal processors that are the Professional's Choice™. With such affordable quality, there's no longer any excuse for compromising your sound.

Features

Two 31-band, 1/3-octave Constant Q frequency bands

Switchable boost/cut ranges of ±6 or ±12 dB

12dB per octave 50Hz low-cut filter

Front panel bypass switch

±12 dB input gain range

4-segment LED ladders for monitoring output levels

XLR and TRS Inpts and Outputs

Internal Toroidal Transformer

Frequency Repsonse of <10Hz to >50kHz

Dynamic range of greater than 108d

Documentation

Specifications

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 <10Hz to >50kHz, +0.5/-3dB

Dynamic Range 108dB

Signal to Noise Ratio 90dB

THD+Noise <0.004%

Interchannel Crosstalk <-80dB, 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 100VAC 50/60Hz; 120VAC 60Hz; 230VAC 50/60Hz

Power Consumption 15W

Power Connector IEC receptacle