The dbx 1231 dual channel EQ, housed in a rugged 3U steel/aluminum chassis, can easily handle the most demanding sound reinforcement environments while offering the simplicity of straightforward controls.
The dbx 1231 has all the features you might expect, including 31 1/3 octave bands, ISO frequency centers, +/- 12 dB input gain range, and switchable 40Hz/18 dB per octave low-cut filters. But it also boasts 45 mm faders, selectable +/-6dB or +/-15dB boost/cut range for precise gain adjustments, XLR, barrier strip, and 1/4'' TRS connectors for installation ease, balanced inputs and outputs for quiet operation and chassis/signal ground lift capabilities for quick hum isolation.
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 ensures compatibility for all installations. Intelligent design and top-shelf components deliver a 10Hz to 50kHz frequency response, greater than 90dB SNR (ref +4dBu), less than 0.005% THD +Noise (1kHz at +4dBu), and interchannel crosstalk of less than -80dB from 20Hz to 20kHz.
• 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
