How does 1/3-octave resolution improve my sound shaping compared to 2/3-octave?

1/3-octave EQs let you target precise frequency bands with three times more resolution, ideal for surgically correcting room modes, taming feedback, and achieving professional-grade tone shaping in studio and touring environments.

Why would a touring sound engineer prefer the dbx 1231 over a simpler graphic EQ?

The 1/3-octave resolution and dual-channel flexibility allow engineers to fine-tune system response at each venue, address acoustic problems quickly, and maintain consistent sound quality across different installations without needing multiple units.

What audio applications benefit most from 31-band dual-channel equalization?

Studio monitoring, touring PA systems, theater sound reinforcement, installed commercial systems, and post-production facilities all benefit from the surgical frequency control and channel independence the dbx 1231 provides.

What does greater than 90 dB SNR mean for sound quality?

A signal-to-noise ratio above 90 dB means the dbx 1231 adds minimal noise to your audio signal even at low levels, ensuring clean, transparent EQ processing without audible hiss or artifacts.

How should I care for 45mm faders on a graphic equalizer?

Move faders smoothly and avoid forcing them to extremes; clean them occasionally with a dry, lint-free cloth; store the unit upright and protected from dust to prevent fader wear and maintain smooth operation.

What's the main difference between this 31-band model and the 15-band version?

The 31-band offers double the frequency resolution for more precise correction, making it better for professional touring, studio work, and acoustic tuning; the 15-band suits general live sound where broad strokes are sufficient.

What delivery options are available for the dbx 1231 to my UAE or GCC location?

Lead times vary based on your location and current inventory; contact the Procure.ae team to request a quote and confirm delivery timing for your order.

Does Procure.ae offer support for integrating this EQ into my existing audio system?

Procure.ae can provide guidance on system integration and setup best practices; reach out to the team to discuss available installation support options.

What are the complete technical specifications of the dbx 1231?

The dbx 1231 is a dual-channel, 31-band 1/3-octave graphic EQ with switchable ±6 or ±15 dB boost/cut, 45mm faders, XLR and barrier strip connectivity, greater than 90 dB SNR, and a 3U rack form factor.

What accessories and documentation come with the dbx 1231?

Contact Procure.ae to confirm the contents of the package, including cables, rack hardware, user manual, and any additional accessories included with the unit.

What warranty coverage is included with the dbx 1231?

Contact Procure.ae to confirm the warranty terms, service coverage, and regional support options for the dbx 1231.

dbx 1231 Dual Channel 31-Band Graphic Equalizer

The dbx 1231 is a dual-channel 31-band 1/3-octave graphic equalizer with ISO frequency centers, switchable plus or minus 6 or plus or minus 15 dB boost/cut, 45mm faders, and XLR, barrier strip, and 1/4 inch TRS connectivity. Housed in a 3U rack chassis with greater than 90 dB SNR for touring, studio, and installed sound use.

Overview

The dbx 1231 extends the acclaimed 12 Series platform to 31 bands per channel, delivering the finest 1/3-octave resolution available in a dual-channel rack EQ for professional sound reinforcement. With ISO frequency centers spanning the full audible spectrum, switchable boost/cut ranges, and multiple connector formats, the 1231 gives engineers granular control to tame difficult room acoustics and optimize loudspeaker response. Its precision circuitry achieves a frequency response from 10 Hz to 50 kHz, greater than 90 dB SNR, and less than 0.005% THD+Noise at +4 dBu.

Key Features

Dual channels with 31 bands of 1/3-octave equalization per channel
ISO frequency centers covering the full audible spectrum
Switchable boost/cut ranges of plus or minus 6 dB or plus or minus 15 dB
Plus or minus 12 dB input gain range
Switchable 40Hz / 18 dB-per-octave low-cut filter per channel
45mm faders for smooth, precise adjustment
XLR, barrier strip, and 1/4 inch TRS connectors for installation flexibility
Balanced inputs and servo-balanced outputs for quiet, hum-free operation
Chassis and signal ground lift for quick hum isolation
Power-off hard-wire relay bypass with 2-second power-up delay
Frequency response 10 Hz to 50 kHz; SNR greater than 90 dB; THD+N less than 0.005%
3U steel and aluminum rack chassis

Specifications

Type: Dual-Channel 31-Band Graphic Equalizer
Channels: 2
Bands per Channel: 31 (1/3 octave)
Frequency Centers: ISO standard
Boost/Cut Range: Switchable +/-6 dB or +/-15 dB
Input Gain: +/-12 dB
Low-Cut Filter: 40 Hz, 18 dB/octave (switchable)
Fader Size: 45mm
Connectors: XLR, barrier strip, 1/4 inch TRS
Frequency Response: 10 Hz to 50 kHz
SNR: Greater than 90 dB (ref +4 dBu)
THD+N: Less than 0.005% at +4 dBu
Chassis: 3U rack
Weight: 5 kg
Color: Wenge

Why buy from Procure.ae

Procure.ae supports professional audio procurement for venues, touring companies, system integrators, and broadcast facilities across the UAE and GCC. We offer competitive pricing on the full dbx 12 Series lineup, with bulk order support and reliable regional delivery. Contact us to request a quote for the dbx 1231.

FAQ

How does the dbx 1231 differ from the dbx 1215?
The 1231 provides 31 bands of 1/3-octave equalization per channel compared to 15 bands on the 1215, allowing finer frequency resolution. It is housed in a 3U chassis versus 2U for the 1215 and weighs 5 kg compared to 3.9 kg.

What is the interchannel crosstalk specification for the dbx 1231?
The 1231 achieves less than -80 dB interchannel crosstalk from 20 Hz to 20 kHz, ensuring that left and right channels remain fully isolated for precise stereo or dual-mono applications.

Is the dbx 1231 suitable for fixed installed sound systems?
Yes, its magnetically isolated transformer, RF-filtered I/O, multiple connector formats, and robust 3U steel/aluminum chassis make it an excellent choice for permanent installed sound in theaters, houses of worship, and corporate AV systems.