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2U equalizer 1231 Professional dual 31-Band graphic equalizer

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Input Connectors1/4" TRS, female XLR (pin 2 hot), and barrier terminal strip
Input TypeElectronically balanced/unbalanced, RF filtered
Input ImpedanceBalanced 40 kOhm, unbalanced 20 kOhm
Max Input>+21dBu balanced or unbalanced
CMRR>40dB, typically >55dB at 1kHz
Output Connectors1/4" TRS, male XLR (pin 2 hot), and barrier terminal strip
Output TypeImpedance-balanced/unbalanced, RF filtered
Output ImpedanceBalanced 200 ohm, unbalanced 100 ohm
Max Output>+21dBu balanced/unbalanced into 2 kOhm or greater; >+18dBm balanced/unbalanced (into 600 ohm)
Bandwidth20Hz to 20kHz, +0.5/-1dB
Frequency Response
Dynamic Range109dB; 115dB
Signal to Noise Ratio90dB, 97dB
THD+Noise<0.005%
Interchannel Crosstalk<-80db, 20Hz to 20kHz
Bypass SwitchBypasses the graphic equalizer section in the signal path
Low cut Switch(recessed) Activates the 40Hz 18dB/octave Bessel high-pass filter
Range Switch(recessed) Selects either +/- 6dB or +/- 15dB slider boost/cut range
I/O Meter4-LED bar graph (Green, Green, Yellow, Red) at -10, 0, +10, and +18dBu
IndicatorsEQ Bypass (Red); Clip (Red); Low Cut (Red); +/-6dB (Yellow); +/-15dB (Red)
Operating Voltage100VAC 50/60Hz; 120VAC 60Hz; 230VAC 50/60Hz
Power Consumption24W
Power ConnectorIEC receptacle
Dimensions5.25" H X 19" W X 7.9" D (13.4cm x 48.3cm x 20.1cm)
Unit Weight10.6 lbs.
Shipping Weight11.6 lbs.


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