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The dbx® 12 Series were designed to meet the needs of the most
demanding sound reinforcement environments, while offering the
simplicity of straightforward controls. The 1231 provides standard
features like dual-channels, 31 1/3 octave bands, ISO frequency
centers, +/- 12 dB input gain range, and switchable 40Hz/18 dB per
octave low-cut filters, but also includes other insightful features.
These include 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 visionary design of the dbx 12 Series makes your job
easier.
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 our engineers took to ensure compatibility for all
installations. Only the best components were utilized, yielding 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. All this attention to detail is
contained in a 3U steel/aluminum chassis.
- 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
Specifications
Owner's Manual [1040K]
Cut Sheet [328K] | 
