DBX Dual Channel 31-Band Equalizer – EU
The dbx 1231 dual-channel graphic equalizer delivers precise 31-band frequency control, low-noise operation, flexible connectivity, selectable EQ ranges, and professional signal optimization for portable and touring sound systems.
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AED 3,075.62 Inc VAT
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Description
dbx 1231 Dual-Channel Graphic Equalizer
The dbx 1231 Dual-Channel Graphic Equalizer is designed to deliver precise audio tuning and dependable performance for professional sound reinforcement, portable PA systems, and touring applications. Featuring dual independent channels with 31 one-third octave ISO frequency bands, the equalizer enables highly accurate frequency shaping for optimizing loudspeaker systems, correcting room acoustics, and improving overall sound quality.
To accommodate different equalization requirements, the dbx 1231 offers selectable ±6 dB and ±15 dB boost/cut ranges, allowing both subtle tonal adjustments and extensive system correction. Precision 45 mm faders provide smooth operation and accurate control, while the adjustable input gain range supports proper signal matching across various audio sources. Integrated 40 Hz Bessel low-cut filters effectively remove unwanted subsonic frequencies, helping improve clarity and protect connected loudspeakers.
The equalizer is engineered for seamless integration into professional installations with multiple connection options, including XLR, 1/4-inch TRS, and barrier strip terminals. Electronically balanced inputs and servo-balanced outputs minimize noise and preserve signal integrity throughout the audio chain. Chassis and signal ground lift functionality further assists in eliminating ground loop hum, ensuring quiet and reliable operation in complex sound systems.
Constructed with premium electronic components inside a rugged 3U steel and aluminum chassis, the dbx 1231 is built for long-term durability and consistent performance. Advanced design elements such as RF-filtered inputs and outputs, a magnetically isolated power transformer, and a power-off hardwire relay bypass contribute to dependable operation in demanding environments. Delivering extended frequency response, low distortion, high dynamic range, and exceptional audio transparency, the dbx 1231 is an ideal equalization solution for professional live sound and touring applications.
Features of DBX1231
- Dual-channel graphic equalizer
- 31 one-third octave frequency bands
- ISO-standard frequency centers
- Selectable ±6 dB EQ range
- Selectable ±15 dB EQ range
- Precision 45 mm faders
- Adjustable input gain control
- 40 Hz low-cut filter
- 18 dB/octave Bessel filter
- Electronically balanced inputs
- Servo-balanced outputs
- RF-filtered signal circuitry
- XLR audio connections
- 1/4-inch TRS connectivity
- Barrier strip terminals
- Ground lift functionality
- Hardwire relay bypass protection
- Extended frequency response
- Low distortion performance
- Rugged 3U steel chassis
Specifications of DBX1231
| Channels | Dual Channel |
| Equalizer Bands | 31 Bands per Channel |
| Frequency Centers | ISO Standard |
| Boost/Cut Range | Selectable ±6 dB or ±15 dB |
| Input Gain Range | -12 dB to +12 dB |
| Low-Cut Filter | 40 Hz, 18 dB/Octave Bessel |
| Input Connectors | 1/4″ TRS, Female XLR, Barrier Strip |
| Input Type | Electronically Balanced/Unbalanced, RF Filtered |
| Input Impedance | 40 kΩ Balanced, 20 kΩ Unbalanced |
| Maximum Input Level | > +21 dBu Balanced or Unbalanced |
| CMRR | >40 dB, Typically >55 dB at 1 kHz |
| Output Connectors | 1/4″ TRS, Male XLR, Barrier Strip |
| Output Type | Impedance Balanced/Unbalanced, RF Filtered |
| Output Impedance | 200 Ω Balanced, 100 Ω Unbalanced |
| Maximum Output Level | > +21 dBu into 2 kΩ or Greater; > +18 dBm into 600 Ω |
| Bandwidth | 20 Hz – 20 kHz (+0.5/-1 dB) |
| Frequency Response | <10 Hz – >50 kHz (+0.5/-3 dB) |
| Dynamic Range | 109 dB / 115 dB |
| Signal-to-Noise Ratio | 90 dB / 97 dB |
| THD + Noise | <0.005% |
| Interchannel Crosstalk | <-80 dB (20 Hz – 20 kHz) |
| Bypass Switch | Bypasses Graphic EQ Section |
| Low-Cut Switch | 40 Hz, 18 dB/Octave Bessel High-Pass Filter |
| Range Switch | Selects ±6 dB or ±15 dB Boost/Cut Range |
| I/O Meter | 4-LED Bar Graph at -10, 0, +10, +18 dBu |
| Status Indicators | EQ Bypass, Clip, Low Cut, ±6 dB, ±15 dB |
| Operating Voltage | 100 VAC 50/60 Hz, 120 VAC 60 Hz, 230 VAC 50/60 Hz |
| Power Consumption | 24 W |
| Power Connector | IEC Receptacle |
| Dimensions | 5.25″ H × 19″ W × 7.9″ D (13.4 × 48.3 × 20.1 cm) |
| Unit Weight | 10.6 lbs |
| Shipping Weight | 11.6 lbs |
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