DBX 1231 Dual Channel 31-Band Graphic Equalizer

DBX 1231 Dual Channel 31-Band Graphic Equalizer

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$359.95

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The DBX 1231 Dual Channel 31-Band Graphic Equalizer is a massive 31-band, two channel rack-mounted EQ unit with many extra features making this a workhorse unit for any studio or live rig.
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SKU DBX-1231
MPN 1231
Features

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.

DBX 1231 Features:
  • 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
DBX 1231 Specifications:
INPUT
Connectors: 1/4" TRS, female XLR (pin 2 hot), and barrier terminal strip Type: Electronically balanced/unbalanced, RF filtered Impedance: Balanced 40 kOhm, unbalanced 20 kOhm Max Input Level: >+21dBu balanced or unbalanced CMRR: >40dB, typically >55dB at 1kHz
OUTPUTS
Connectors: 1/4" TRS, male XLR (pin 2 hot), and barrier terminal strip Type: Impedance-balanaced/unbalanced, RF filtered Impedance: Balanced 200 ohm, unbalanced 100 ohm Max Output Level: >+21dBu balanced/unbalanced into 2 kOhm or greater >+18dBm balanced/unbalanced (into 600 ohm)
SYSTEM PERFORMANCE
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: 90dB, 97dB THD + Noise: <0.005% Interchannel Crosstalk: <-80db, 20Hz to 20kHz
FUNCTION SWITCHES
EQ Bypass: Bypasses the graphic equalizer section in the signal path Low Cut (recessed): Activates the 40Hz 18dB/octave Bessel high-pass filter Range (recessed): Selects either +/- 6dB or +/- 15dB slider boost/cut range
INDICATORS
Output Level Meter: 4-LED bar graph (Green, Green, Yellow, Red) at -10, 0, +10, and +18dBu EQ Bypass: 1 LED: Red Clip: 1 LED: Red Low Cut: 1 LED: Red +/-6dB: 1 LED: Yellow +/-15dB: 1 LED: Red
POWER SUPPLY
Operating Voltage: 100VAC 50/60Hz, 120VAC 60Hz Power consumption: 24W Main Connection: IEC receptacle
PHYSICAL
Dimensions: 5.25" H X 19" W X 7.9" D (13.4cm x 48.3cm x 20.1cm) Weight: 10.6 lbs. Shipping Weight: 11.6 lbs.
Package Contents
  • (1) DBX 1231 EQ
  • (1) USA Plug Power Cable
  • [120 Volt 60 Hz]
  • (1) Owner's Manual
Warranty Details Warranty Information
Product: Period:
DBX 1231 1 Year
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Description

SKU DBX-1231
MPN 1231

Features

Features

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.

DBX 1231 Features:
  • 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

Specs

Specifications
DBX 1231 Specifications:
INPUT
Connectors: 1/4" TRS, female XLR (pin 2 hot), and barrier terminal strip Type: Electronically balanced/unbalanced, RF filtered Impedance: Balanced 40 kOhm, unbalanced 20 kOhm Max Input Level: >+21dBu balanced or unbalanced CMRR: >40dB, typically >55dB at 1kHz
OUTPUTS
Connectors: 1/4" TRS, male XLR (pin 2 hot), and barrier terminal strip Type: Impedance-balanaced/unbalanced, RF filtered Impedance: Balanced 200 ohm, unbalanced 100 ohm Max Output Level: >+21dBu balanced/unbalanced into 2 kOhm or greater >+18dBm balanced/unbalanced (into 600 ohm)
SYSTEM PERFORMANCE
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: 90dB, 97dB THD + Noise: <0.005% Interchannel Crosstalk: <-80db, 20Hz to 20kHz
FUNCTION SWITCHES
EQ Bypass: Bypasses the graphic equalizer section in the signal path Low Cut (recessed): Activates the 40Hz 18dB/octave Bessel high-pass filter Range (recessed): Selects either +/- 6dB or +/- 15dB slider boost/cut range
INDICATORS
Output Level Meter: 4-LED bar graph (Green, Green, Yellow, Red) at -10, 0, +10, and +18dBu EQ Bypass: 1 LED: Red Clip: 1 LED: Red Low Cut: 1 LED: Red +/-6dB: 1 LED: Yellow +/-15dB: 1 LED: Red
POWER SUPPLY
Operating Voltage: 100VAC 50/60Hz, 120VAC 60Hz Power consumption: 24W Main Connection: IEC receptacle
PHYSICAL
Dimensions: 5.25" H X 19" W X 7.9" D (13.4cm x 48.3cm x 20.1cm) Weight: 10.6 lbs. Shipping Weight: 11.6 lbs.

Contents

Package Contents
  • (1) DBX 1231 EQ
  • (1) USA Plug Power Cable
  • [120 Volt 60 Hz]
  • (1) Owner's Manual

Warranty

Warranty Details Warranty Information
Product: Period:
DBX 1231 1 Year

Reviews

Reviews
  1. Be the first to review this product

Write Your Own Review

Post a product review while logged into your store account for a chance at earning 100 Unique Reward points! (Pending Approval)

  1 star 2 stars 3 stars 4 stars 5 stars
Rating