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Home>Live Sound/PA>Live Sound Signal Processors>Live Sound Equalizers>DBX Live Sound Equalizers

dbx 2231 Dual 31-Band Graphic Equalizer

Surpassing the usual EQ, the dbx 2231 features instant encode/decode circuitry, Type III noise reduction and a PeakPlus limiter for clean, balanced sound. 10 People rated this product: Rate and Review This Product
Ships to: Can ship to United States Can ship to APO/FPO
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Product Description

With a prestigious heritage extending back to our heralded 30 Series equalizers, the dbx 2231 easily lives up to the revered dbx reputation. Besides including two 31-band channels of 1/3-octave equalization, the 2231 empowers you with flexible features like our PeakPlus limiter circuit, and our amazing Type IIITM Noise Reduction system. It also includes +12 dB input gain range; switchable +6 or +15 dB boost/cut range; XLR, Barrier strip, 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 most revolutionary feature of the 2231 is our proprietary Type IIITM Noise Reduction system, which enables you to boost signal-to-noise ratios by up to an incredible 20dB. The result of this instant encode/decode process is that you're no longer forced to employ drastic EQ settings in effort to reduce system noise. Instead, you're freed to dedicate all 2 EQ bands to the most important thing, the music. Further, our PeakPlus limiter technology allows you to easily safeguard your gear against hazardous dynamic surges in program material. In addition to these formidable tools, the 2231's front panel provides at-a-glance insight as to gain reduction and output level status via its four-stage LED ladders. With such power and finesse built into such a reasonably priced package, it's easy to see why dbx 20 Series equalizers are relied upon by studio and touring professionals the world over. With such affordable quality, there's no longer any excuse for compromising your sound.

Features:

- dbx's revolutionary Type IIITM Noise Reduction system, which increases S/N ratio by up to 20dB
- PeakPlus limiting technology with threshold range from 0dBu to +24dBu (off)
- Two 31-band, 1/3-octave channels with switchable boost/cut ranges of +6 or +15 dB
- +12 dB input gain range
- XLR, Barrier strip, and 1/4" inputs
- 4-segment LED ladders for monitoring of gain reduction and output levels -- the most comprehensive visual feedback available
- Exceptional sound quality
- dbx's unmatched engineering and construction standard zZounds is an authorized dealer of DBX products.
Inputs
Connectors: 1/4 in. TRS, female XLR (pin 2 hot), and barrier terminal strip
Type: Electronically balanced/unbalanced, RF filtered
Impedance: Balanced 40kS, unbalanced 20kS
Max Input Level: >+21dBu balanced or unbalanced
CMRR: >40dB, typically >55dB at 1kHz

Outputs
Connectors: 1/4 in. TRS, male XLR (pin 2 hot), and barrier terminal strip
Type: Impedance-balanced/unbalanced, RF filtered
Impedance: Balanced 200S, unbalanced 100S
Max Output Level: >+21dBu balanced/unbalanced into 2kS or greater
>+20dBm balanced/unbalanced (into 600)

System Performance
Bandwidth: 20Hz to 20kHz, +/-0.5dB
Frequency Response: <10Hz to >50kHz, +0.5/-3dB
Noise Reduction In (+/-6 and +/-12dB range):
Signal-to-Noise: >102dB, unweighted, ref: +4dBu, 22kHz measurement bandwidth
Dynamic Range: >120dB, unweighted
Noise Reduction Out: (+/-6dB range):
Signal-to-Noise: >94dB, unweighted, ref: +4dBu, 22kHz measurment bandwidth
Dynamic Range: >112dB, unweighted
Noise Reduction Out: (+/-12dB range):
Signal-to-Noise: >90dB, unweighted, ref: +4dBu, 22kHz measurement bandwidth
Dynamic Range: >108dB, unweighted
THD+Noise: <0.04%, 0.02% typical at +4dBu, 1kHz
Interchannel Crosstalk: <-80dB, 20Hz to 20kHz (2215/2231)
Noise Reduction: Up to 20dB of dynamic broadband noise reduction

Function Switches
Type III NR: Activates dbx Type III' Noise Reduction
EQ Bypass: Bypasses the graphic equalizer section in the signal path
Low Cut (recessed): Activates the 40Hz 18dB/octave Bessel high-pass filter
Range (recessed): Selects either +/- 6dB or +/- 15dB slider boost/cut range

Indicators
Output Level Meter: 4-LED bar graph (Green, Green, Yellow, Red) at -10, 0, +10, and +18dBu
Gain Reduction Meter: 4-LED bar graph (all Red) at 0, 3, 6, and 10dB
Type III NR Active: Yellow LED
EQ Bypass: Red LED
Clip: Red LED
Low Cut Active: Red LED
+/-6dB range: Red LED
+/-12dB range: Red LED

Power Supply
Operating Voltage: 100VAC 50/60Hz, 120VAC 60Hz
230VAC 50/60Hz
Power Consumption: 23W
Mains Connection: IEC receptacle
Physical
Dimensions: 3.5" H X 19" W X 7.9" D (8.9cm x 48.3cm x 20.1cm)
Dimensions and Weight in Packaging
Shipping Weight: 14 lbs
Shipping Dimensions: 23 x 12 x 8 in
DBX Warranty
dbx Warranty
If you have additional warranty questions, please call the manufacturer at 801-568-7660
Our extended 30-Day 100% Satisfaction Guarantee applies on this product. Buy it, and if it isn't just right for you, return it!
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