dbx 1231 Dual Channel 31 Band Equalizer - Mint

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dbx 1231 Dual Channel 31 Band Equalizer This equalizer is in mint condition - only used twice and is complete with original box, owner’s manual and UK mains lead. The photos are of the actual item for sale. This is an essential item in the fight against feedback. With 31 bands for each of the dual channels, you can easily reduce the problem frequencies, without affecting the overall sound. The dbx 1231 has been designed to meet the needs of the most demanding sound reinforcement environments, while offering the simplicity of straightforward controls. The 1231 provides dual-channels, 31 1/3 octave bands, ISO frequency centres, +/- 12 dB input gain range, and switchable 40Hz/18 dB per octave lowcut filters. It also includes 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 dbx 1231 Equalizer has been 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 are provided to ensure compatibility for all installations. Only the best components have been 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 range between ±6dB and ±15dB • 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 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 height x 48.3cm width x 20.1cm depth Unit Weight 4.9 kg. Shipping Weight 5.3 kg. This is a UK only sale Payment via Paypal please within 2 days of auction end, or cash on collection.from Southampton area Ship... read more

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