3 Band Equalizer - Line Level

  • 3-Band Audio Equalization
  • Custom Tailored Audio Bandwidth
  • Adjust To Pass Voice-Band Audio
  • Adjust To Produce Smile-Curve for Music
  • Low Noise and Low Distortion Equalization
  • Recommended Power Supply ( Not Included )
    PS-24AS (USA)PS-24AX (International)


    The ST-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. Equalization is accomplished by three active circuits, each controlling a separate audio band. These bands were carefully selected to yield a module that works effectively in a wide variety of systems. Setup of the ST-EQ3 is assisted by a peak overload LED which indicates excessive pre or post EQ levels.


    Tariff code:8543.70.9860
    WEEE weight:0.12 lbs.
    Shipping Weight:0.17 lbs.
    Package Dimensions:2 x 2 x 4 in.
    Package Type:Cardboard Box
    Dimensions:Height: 0.7 in. (1.7 cm), Width: 3 in. (7.6 cm), Depth: 1.6 in. (3.9 cm)
    Power Requirement:GROUND-REFERENCED, 24 Vdc @ 25 mA
    Bandwidth at 3dB EQ: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
    Center Frequencies:LOW Band: 80 Hz
    MID Band: 1 kHz
    HIGH Band: 30 kHz
    Audio Output:+4 dBu nominal, 150 Ω balanced
    Gain:OFF to unity (adjustable, ± EQ adjustment)
    THD+N:< 0.030%; 0.010% typical (1 kHz flat response)
    Input:100 kΩ balanced or unbalanced bridging; line-level
    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 bridging load
    CMRR:> 60 dB (50 to 120 Hz)
    Noise:< -80 dB (below +4 dBu)

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


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