DBX 1231
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dbx 1231
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
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