From the Manufacturer
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 lowcut 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 maintenancefree 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. It’s no wonder that dbx has been a leader in
the industry for over 25 years.
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