Radio Design Labs STCL2

Compressor/Limiter

OUR PART #: STCL2 Write the First Review.

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List Price: $207.97
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Radio Design Labs' 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.

NOTE: Radio Design Labs' PS-24AS power supply is NOT included but is required in order to power this product.  Please see the "Accessories" tab or click here for more information on the PS-24AS power supply.

Radio Design Labs ST-CL2 Features:

  • 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

Radio Design Labs ST-CL2 Specifications:

  • Input:  10 kOhm Balanced (may be connected unbalanced)
  • Input Signal Range:  -10 to +4 dBu, adjustable (for 6 dB gainr reduction); +22 dBu maximum
  • Output:  150 Ohm 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 dBgain reduction
  • CMRR:  > 60dB (50 to 100 Hz)
  • AttackTime:
    • 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
  • Power Requirement:  24 to 33 Vdc @ 50 mA,SupplyFlex
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