2 x 31 Band Graphic Equalizer
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.
Inputs
Connectors: XLR-3/TRS 1/4" & barrier terminal strip
Type: Electronically balanced/unbalanced, RF filtered
Impedance: 40 kOhm (Balanced) & 20 kOhm (Unbalanced)
Max Input Level: >+21dBu, balanced or unbalanced
CMRR: >40dB, typically >55dB at 1KHz
Outputs
Connectors: XLR/TRS 1/4” & barrier terminal strip
Type: Electronically balanced/unbalanced, RF filtered
Impedance: 120 kOhm (Balanced) & 60 kOhm (Unbalanced)
Max Output Level:
- >+21dBu, balanced/unbalanced into 2 kOhm or greater
- >+18dBm, balanced/unbalanced (into 600 ohms)
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 bandwidth
Dynamic 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
Physical
Dimensions: 134x483x201 mm. / 5.25x19x7.9 in.
Weight: 4.8 kg. / 10.6 lbs.
