dbx 131S 31-Band Graphic EQ

Remarkably simple to operate, the dbx 131S is a fully-featured graphic EQ with one channel, 31 1/3rd octave bands, switchable boost/cut ranges and more.

The dbx 131S Graphic Equalizer series has been designed to meet the needs of the most demanding sound reinforcement environments, while offering the simplicity of straightforward controls.

The dbx 131S not only offers standard features like single-channel, 31, 1/3 octave bands, ISO frequency centers, +/- 12 dB input gain range, and switchable 50Hz/12 dB per octave low-cut filter, but also includes other insightful features. These features include 20 mm faders; selectable +/-6dB or +/-12dB boost/cut range for precise gain adjustments; XLR, and 1/4 inch TRS connectors for installation ease; balanced inputs and outputs for quiet operation. The visionary design of the dbx 131 makes your job easier.

Features

- Single 31-band, 1/3-octave Constant Q frequency bands
- Switchable boost/cut ranges of +/-6 or +/-12 dB
- 12dB per octave, 3dB down @ 50Hz low-cut filter
- Front panel bypass switch
- +/-12 dB input gain range
- 4-segment LED ladders for monitoring output levels
- XLR and TRS Inputs and Outputs
- Internal Toroidal Transformer
- Frequency Response of <10 Hz to >50kHz
- Dynamic range of greater than 108dB
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Inputs
- Connectors: 1/4 inch TRS, female XLR (pin 2 hot)
- Type: Electronically balanced/unbalanced, RF filtered
- Impedance: Balanced 40k ohm, unbalanced 20k ohm
- Max Input Level: >+21dBu balanced or unbalanced
- CMRR: >40dB, typically >55dB at 1kHz

Outputs
- Connectors: 1/4 inch TRS, male XLR (pin 2 hot)
- Type: Impedance-balanced/unbalanced, RF filtered
- Impedance: Balanced 100 ohm, unbalanced 50 ohm
- Max Output Level: >+21dBu balanced/unbalanced into 2k ohm 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
- Dynamic Range: 108dB
- Signal-to-Noise: 90dB
- THD+Noise: <0.004%
- nterchannel Crosstalk: <-80dB, 20Hz to 20kHz

Function Switches
- EQ Bypass: Bypasses the graphic equalizer section in the signal path
- Low Cut: Activates the 50Hz 12dB/octave high-pass filter
- Range: Selects either +/- 6dB or +/- 12dB slider boost/cut range

Power Supply
- Operating Voltage: 100VAC 50/60Hz, 120VAC 60Hz, 230VAC 50/60Hz
- Power Consumption: 12W
- Mains Connection: IEC receptacle

Note: Specifications subject to change without notice.
Dimensions and Weight in Packaging
Base Item
Shipping Weight: 6 lbs
Shipping Dimensions: 22 x 12 x 3 in
Manufacturer Part Number (MPN): dbx131S

For support or warranty questions, please contact the manufacturer:
Phone: 844-776-4899

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