Skip to product information
1 of 2

dbx 1231 Dual 31-Band Graphic Equalizer

dbx 1231 Dual 31-Band Graphic Equalizer

SoundPro Item: 43323 | Part Number: DBX1231V

Regular price $655.00
Regular price $820.00 Sale price $655.00
Your Price Sold out
MSRP: $820.00 | MAP: $655.00

Usually ships in 5-7 business days

  • 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

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.

View full details

Specifications

Dimensions
Dimensions (HxWxD)
5.25" x 19" x 7.9"
Electrical
THD+Noise
<0.005%
Operating Voltage
100VAC 50/60Hz; 120VAC 60Hz; 230VAC 50/60Hz
Power Consumption
24 W
Audio
Input Impedance
balanced 40 kOhm, unbalanced 20 kOhm
Output Connectors
1/4" TRS, male XLR (pin 2 hot), and barrier terminal strip
Output Impedance
balanced 200 Ω, unbalanced 100 Ω
Frequency Response
<10Hz to >50kHz, +0.5/-3dB; +/-15dB range; +/-6dB range
Signal to Noise Ratio
90dB, 97dB
Performance
Bandwidth
20Hz to 20kHz, +0.5/-1dB
Connectivity
Input Connectors
1/4" TRS, female XLR (pin 2 hot), and barrier terminal strip
Input Type
electronically balanced/unbalanced, RF filtered
Max Input
>+21dBu balanced or unbalanced
Output Type
impedance-balanced/unbalanced, RF filtered
Max Output
>+21dBu balanced/unbalanced into 2 kOhm or greater; >+18dBm balanced/unbalanced (into 600 ohm)
Power Connector
IEC receptacle
Shipping
Weight
10.6 pounds
General
Dynamic Range
109dB; 115dB
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)
Audio Performance
CMRR
>40dB, typically >55dB at 1kHz

Why Choose SoundPro?

Since 1972, SoundPro has been the trusted source for audio, video, and lighting gear. Whether you're starting your AVL journey or are a seasoned professional, we're here to help you every step of the way.

  • Certified Account Managers

    Our Account Managers, with 16+ industry certifications, are ready to find your solution.

  • Personalized Pricing

    We know every project is unique. Get a personalized quote anytime you need it

  • Fast Shipping & Local Pickup

    In stock items ship same day if ordered by 4pm CST. Pickup offered in Irving, TX.

  • Accountability from Real People

    We aim for a smooth, transparent experience by setting and sticking to clear expectations.

  • Easy Payments & Financing

    We accept all major credit cards and also offer financing through our partners.

1 of 2