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EQ-2231

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EQ-2231

Overview

EQ-2231 is a 2 x 31 band graphic equalizer that features a 4 LED bar graph indicator for monitoring gain reduction and output levels. The unit also has a noise reduction, limiter and 40Hz low cut button. The unit ships with ¼” and XLR connectors.

Specifications

Inputs
Connectors: XLR/TRS ¼” & barrier terminal strip
Type: Electronically balanced/unbalanced,RF filtered
Impedance: 40KOhm (Balanced) & 20KOhm (Unbalanced)
Max Input Level: >+21dBu,balanced or unbalanced
CMRR: >40dB, typically >55dB at 1KHz

Outputs
Connectors: XLR/TRS ¼” & barrier terminal strip
Type: Electronically balanced/unbalanced,RF filtered
Impedance: 120KOhm (Balanced) & 60KOhm (Unbalanced)
Max Output Level:

- >+21dBu,balanced/unbalanced into 2KOhm or greater
- >+18dBm,balanced/unbalanced (into 600-Ohm)

System Performance
Bandwidth: 20Hz to 20KHz, +0.5/-1dB
Frequency Response: <10Hz to>50KHz,+0.5/-3dB
Noise Reduction In: (+/-6 and +/-15dB range):
Signal-to-Noise: >100dB,unweighted,ref:+4dBu,22KHz measurement bandwidth
Dynamic Range: >118dB,unweighted
Noise Reduction Out: (+/-6dB range):
Signal-to-Noise: >94dB,unweighted,ref:+4dBu,22KHz measurement bandwidthDynamic Range: >112dB,unweighted
Noise Reduction Out: (+/-15dB 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
- <0.5%, at 1KHz with 15dB gain reduction
Interchannel Crosstalk: <-80dB,20Hz to 20KHz (2215/2231)
Noise Reduction: Up to 20dB of dynamic broadband noise reduction

Function Switches
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: 4-LED bar graph (Green,Green,Yellow,Red) at-10,0,+10,and +18dBu
Gain Reduction: 4-LED bar graph (all Red) at 0,3,6,and 10dB

Electrical
Input voltage range: AC100–240V, 50-60Hz

Physical
Dimensions: 134x483x201 mm. / 5.25x19x7.9 in.
Weight: 4.8 Kg.