Radio Design Labs FP-ALC2
Single-Channel Stereo Automatic Level Control


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List Price: $334.33
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Radio Design Labs' FP-ALC2 is the perfect choice in many applications where consistent stereo audio levels are needed from consumer sources with varying audio output levels. Power connections are made using either the full-size barrier block terminals or a dc power jack.

The FP-ALC2 is a two channel (stereo) module featuring phono jack INPUTS and OUTPUTS. A single user adjustment makes installation simple and efficient. The gain adjustment is set as high as possible with the loudest source without the INPUT OVERLOAD indicator flashing. No further adjustments are needed. Foreground as well as background sound systems fed from variable audio source levels, such as multiple CD changers or satellite receivers, benefit from consistent levels.

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.

The automatic level control circuitry in the FP-ALC2 maintains a consistent –10 dBV output for input signal variations as great as 25 dB. Yet the operation of the module is nearly transparent to the listener for a wide variety of source material from rock to classical. The FP-ALC2’s low profile and compact size permit mounting in confined spaces and in various convenient locations.


  • Consistent Levels from Variable Sources
  • Split-Band AGC for Audio Transparency
  • Self-Adjusting Attack and Release Times
  • AGC with Simple Single-Control Setup
  • Level Control Range > 20 dB
  • Gated Control to Avoid Level Seeking
  • Convenience of RDL FLAT-PAKs


  • Inputs (2): 10 kW unbalanced phono jack
  • Input Level: -10 dBV (nominal)
  • Output: 200 W Unbalanced Phono Jack
  • Output Level: -10 dBV
  • Automatic Level Range: -30 to 0 dBV
  • Gate Threshold: -40 dBV (20 Hz to 3 kHz)
  • Frequency Response (excluding AGC): 20 Hz to 20 kHz (± 0.5 dB)
  • THD+N (excluding AGC): < 0.15% (20 Hz to 20 kHz)
  • Noise: < -90 dB (below –10 dBV)
  • Crosstalk: -75 dB (typical, 1 kHz)
  • Headroom: > 18 dB
  • Indicator (1): Input Overload
  • Power Requirement: Ground-Referenced 24 Vdc @ 80 mA
  • Dimensions: 1.20" H x 3.25" W x 5.75" L (3.05 x 8.26 x 14.61 cm)
24 VDC 500mA Switching Power SupplyRadio Design Labs PS-24AS 24 VDC 500mA Switching Power Supply

Radio Design Labs' PS-24AS is a 24 Vdc switching power supply with a North American AC plug.  500 mA, dc plug.Specifications: Input: 100 to 240 VACOutput: 24 Vdc, 500 mA (UL, CSA)Dimensions: 1.65" x 2.75" x 1.45" (4.2 x 7 x 3.7 ...

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Pole Mount Tray for RDL Module Radio Design Labs PM-1T Pole Mount Tray for RDL Module

The PM-1T is a tray that mounts above a projector using a standard (1.5" I.D.) round projector pole or any smaller round or rectangular pole. The tray accommodates up to two FP-PA20 Audio Power Amplifiers (for stereo operation) and two ...

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Din Rail Mounting BracketRadio Design Labs DRA-35F Din Rail Mounting Bracket

The DRA-35F is a DIN rail mounting bracket that provides positive mounting for any RDL FLAT-PAK™ module. DIN rail mounting is ideal in locations subject to vibration, in confined spaces or where traditional rack mounting is not desired. ...

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Our Price:$10.34List Price: $12.21You save 15%!

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