dbx

dbx 1231

2 Channel 31-Band Graphic EQ

Order Code: 1231
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Our Price: $644.00

Superbly priced eq with loads of features: Switchable boost / cut ranges of ±6 or ±15 dB, electronically balanced / unbalanced inputs, servo balanced / unbalanced outputs, RF filtered inputs and outputs, ±12dB input gain range. Nice long throw faders, and a handy edition to anyone's FOH or monitor rack.

The dbx 12 Series Equalizers were precision engineered to provide years of maintenance-free operation in any application. The magnetically isolated transformer, electronically balanced/unbalanced inputs and servo balanced/unbalanced outputs, RF-filtered inputs and outputs, and power-off hard-wire relay bypass with 2 second power up delay were steps DBX engineers took to ensure compatibility for all installations.

Photo of dbx 1231 available from Factory Sound
  • 1231
  • 1231_f1
  • 1231_f2
  • 1231_f3
  • 1231_r1
  • 1231_r2
  • 1231_r3
  • Switchable boost/cut ranges of ±6 or ±15 dB
  • Electronically balanced/unbalanced inputs
  • Servo balanced/unbalanced outputs
  • RF filtered inputs and outputs
  • XLR, Barrier Strip, and 1/4" TRS connectors
  • -12dB/+12dB input gain range
  • 18dB/octave 40Hz Bessel low-cut filter
  • Chassis/signal ground lift capability
  • Internal power supply transformer
  • Power-off hardwire relay bypass with 2-second power-up delay
Input Connectors 1/4" TRS, female XLR (pin 2 hot), and barrier terminal strip
Input Type Electronically balanced/unbalanced, RF filtered
Input Impedance Balanced 40 kOhm, unbalanced 20 kOhm
Max Input >+21dBu balanced or unbalanced
CMRR >40dB, typically >55dB at 1kHz
Output Connectors 1/4" TRS, male XLR (pin 2 hot), and barrier terminal strip
Output Type Impedance-balanced/unbalanced, RF filtered
Output Impedance Balanced 200 ohm, unbalanced 100 ohm
Max Output >+21dBu balanced/unbalanced into 2 kOhm or greater; >+18dBm balanced/unbalanced (into 600 ohm)
Bandwidth 20Hz to 20kHz, +0.5/-1dB
Frequency Response <10Hz to >50kHz, +0.5/-3dB; +/-15dB range; +/-6dB range
Dynamic Range 109dB; 115dB
Signal to Noise Ratio 90dB, 97dB
THD+Noise <0.005%
Interchannel Crosstalk <-80db, 20Hz to 20kHz
Bypass Switch Bypasses 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 Meter 4-LED bar graph (Green, Green, Yellow, Red) at -10, 0, +10, and +18dBu
Indicators EQ Bypass (Red); Clip (Red); Low Cut (Red); +/-6dB (Yellow); +/-15dB (Red)
Operating Voltage 100VAC 50/60Hz; 120VAC 60Hz; 230VAC 50/60Hz
Power Consumption 24W
Power Connector IEC receptacle
Dimensions 13.4cm x 48.3cm x 20.1cm
Unit Weight 4.8 kg
Shipping Weight 5.3 kg