Three Band Audio Equalizer with Knobs - Terminal block

  • 3-Band Audio Equalizer
  • Custom Tailored Audio Bandwidth
  • User-Accessible Adjustments
  • High-Density Rack-Mount Convenience
  • Low-Noise, Low-Distortion Equalizer
  • Recommended Power Supply ( Not Included )
    PS-24AS (USA)PS-24AX (International)


    The RU-EQ3 features a balanced bridging input, which may be connected unbalanced if desired. The output driver is 150 Ω balanced, and is intended to drive unbalanced or balanced lines of 150 Ω or higher impedance. Front-panel knobs provide active equalization, each controlling a separate audio band. These bands were carefully selected to yield a module that works effectively in a wide variety of systems. Each band's center frequency can be either boosted or attenuated by at least 12 dB. The Q of the low and high band equalizers was selected so that those controls can be functionally considered as a total bass band or treble band control. The RU-EQ3 adds a third control. This midrange control is optimized to voice band adjustment, with the overlap tailored to provide smooth operation for wideband music applications. The RU-EQ3's OVERLOAD indicator flashes if either the input or output stage clips.


    Input:100 kΩ balanced or unbalanced bridging; line-level
    THD+N:< 0.030%; 0.010% typ. (1 kHz, +4 dBu reference; flat response)
    CMRR:> 60 dB (100 Hz)
    Frequency Response:20 Hz to 22 kHz (EQ set flat; ± 0.5 dB into 600 Ω)
    10 Hz to 22 kHz (EQ set flat; ± 0.5 dB into 10 kΩ)
    Noise:< -80 dB (below +4 dBu)
    Center Frequencies:Low Band: 80 Hz
    Mid Band: 1 kHz
    High Band: 30 kHz
    Bandwidth:Low Band: 20 Hz to 300 Hz
    Mid Band: 200 Hz to 7 kHz
    High Band: 3 kHz to 30 kHz
    Ambient Operating Environment:0° C to 55° C
    Power Requirement:GROUND-REFERENCED, 24 Vdc @ 25 mA
    Package Type:Cardboard Box
    WEEE weight:0.565 lbs.
    Shipping Weight:0.8 lbs.
    Tariff code:8543.70.9860
    Package Dimensions:4.375 x 7 x 2.25 in.

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    CAD FilesUnitsFormat
    Engineering Functional BlockAmericanDXF
    Panel Diagram - FrontAmericanDXF
    Panel Diagram - RearAmericanDXF
    Panel Diagram - FrontMetricDXF
    Panel Diagram - RearMetricDXF
    High Res ImagesFormat
    Declaration of Conformity

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