231 Dual channel 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, 20 mm 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-quailty 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 108 dB 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.

- Two 31-band, 1/3-octave Constant Q frequency bands
- Switchable boost/cut ranges of ±6 or ±12 dB
- 12 dB per octave 40 Hz 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 <10 Hz to >50 kHz
- Dynamic range of greater than 108 dB

INPUT

Connectors:
1/4" TRS, female XLR (pin 2 hot)
Type:
Electronically balanced/unbalanced, RF filtered
Impedance:
Balanced 40 kohm, unbalanced 20 kohm
Max Input Level:
>+21 dBu balanced or unbalanced
CMRR:
>40 dB, typically >55 dB at 1 kHz

OUTPUTS

Connectors:
1/4" TRS, male XLR (pin 2 hot)
Type:
Impedance-balanaced/unbalanced, RF filtered
Impedance:
Balanced 100 Ohm, unbalanced 50 Ohm
Max Output Level:
>+21 dBu balanced/unbalanced into 2 k ohm or greater
>+18 dBm balanced/unbalanced (into 600 Ohm)

SYSTEM PERFORMANCE

Bandwidth:
20 Hz to 20 kHz, +0.5/-1 dB
Frequency Response:
<10 Hz to >50 kHz, +0.5/-3 dB
Dynamic Range:
108 dB
Signal-to-Noise:
90 dB
THD+Noise:
<0.004%
Interchannel Crosstalk:
<-80 dB, 20 Hz to 20 kHz

FUNCTION SWITCHES

EQ Bypass:
Bypasses the graphic equalizer section in the signal path
Low Cut:
Activates the 50 Hz 12 dB/octave high-pass filter
Range:
Selects either +/- 6 dB or +/- 12 dB slider boost/cut range

POWER SUPPLY

Operating Voltage:
100 VAC 50/60 Hz, 120 VAC 60 Hz, 230 VAC 50/60 Hz
Power consumption:
15 W
Main Connection:
IEC receptacle

Mer information