Compressor/Limiter - Line Level

  • Positive Audio Level Protection
  • Smooth Inaudible Gain Reduction
  • Tight Audio Peak Control
  • Very Low Noise Compressor
  • Multi Stage Incremental Gain Reduction
  • Fully Automatic Operation
  • Superb Performance with Minimal Setup
  • RDL® SupplyFlex™ Power Input Configuration
  • Recommended Power Supply ( Not Included )
    PS-24AS (USA)PS-24AX (International)


    The ST-CL2 is a high performance compressor/limiter designed to maintain a constant average output level and effective peak control over a wide range of input levels. The input and output are line level and each may be wired balanced or unbalanced. Trimmers provide adjustment for all usual professional and consumer audio input and output levels. Internal detectors feed three timing circuits. The threshold level and slope of each timing circuit are incremented to respond sequentially to signals of varying amplitude and energy levels. The ST-CL2 features a soft-knee compression threshold and compression ratio which automatically adjust to the program material. Two LED indicators cover the incremental ranges of compression, making setting of the input level quick and easy. Two ST-CL2s may be strapped together for stereo operation by connecting the coupling terminals between the two modules.


    Input:10 kΩ Balanced (may be connected unbalanced)
    Input Signal Range:-10 to +4 dBu, adjustable (for 6 dB gain reduction); +22 dBu maximum
    Output:150 Ω Balanced (may be connected unbalanced)
    Output Signal Range:OFF to +8 dBu, adjustable
    Frequency Response:10 Hz to 20 kHz (± 0.2 dB) over full compression range
    Noise below +4 dBu output:< -78 dB (unweighted; +4 dBu input/output)
    Total Harmonic Distortion:< 0.05% @ 1 kHz below compression threshold;
    < 0.1% @ 1 kHz with 3 dB gain reduction;
    < 0.15% @ 1 kHz with 6 dB gain reduction
    CMRR:> 60 dB (50 to 120 Hz)
    Attack Time:Averaging Compressor: 500 ms (+4 dBu input);
    Fast Compression: <10 ms (+20 dBu input);
    Peak Limiting: Instantaneous
    Release Time:Automatically adjusting up to 500 ms
    Compression Ratio:Automatically adjusting 1.5:1 to 10: 1
    Peak Limiter:INF:1
    Interconnection:Stereo COUPLE interconnection provided
    Indicators (2):Yellow LED for NORMAL Compression,
    Red LED for HEAVY Compression
    Ambient Operating Environment:0° C to 55° C
    Power Requirement:24 Vdc @ 50 mA, SupplyFlex
    Package Type:Cardboard Box
    Tariff code:8543.70.9860
    WEEE weight:0.145 lbs.
    Shipping Weight:0.2 lbs.
    Package Dimensions:2 x 2 x 4 in.

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    CAD FilesUnitsFormat
    Engineering Functional BlockAmericanDXF
    Panel Diagram - EndAmericanDXF
    Panel Diagram - FrontAmericanDXF
    Panel Diagram - EndMetricDXF
    Panel Diagram - FrontMetricDXF
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