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Tube-Tech CM1A Optical Compressor

Tube-Tech CM1A
Tube-Tech CM1A
 
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List Price: $1,500.00
Our Price: $1,399.00


Availability: Discontinued
Product Code: 9999-08879

 

Tube-Tech CM1A Optical Compressor

The Tube-Tech CM1A Optical Compressor is based on the classic CL1B Compressor. The CM1A features all the benefits of powerful optical compression in a modular package!

The Tube-Tech CM1A Optical Compressor is an optical, all tube based compressor targeted at both recording and mixing: It is equally suited for delicate vocal recordings, as well as critical instrument processing such as lead guitar, drums, bass etc. The CM1A features the same tube circuit as the famous CL1B Opto Compressor, but Tube-Tech has improved the action of the compressor by carefully selecting a different optical element and fine-tuning the control circuit.

The result is smoother attack and even more powerful behavior than the CL1B, especially noticeable when used for drum recording and mixing. The sound of the CM1A places it between the LCA2B (Tube VCA) and the CL1B. The CM1A has been extremely well received by numerous top engineers.

The Tube-Tech CM1A Optical Compressor features a gain-reduction element, positioned immediately after the input transformer. It is controlled by the sidechain amplifier, which also contain the two time control circuits - one for fixed and one for variable Attack/Release. The two time-controllers can either be used separately or combined. This circuit contains semiconductor OP-amps for the entire control.

A tube-based push-pull amplifier follows the gain-reduction element with variable gain up to 30 dB. A dedicated Bus selector with three positions (Off, Link 1, Link 2) is used whenever you want to link several compressors together. Input and output transformers have a static-screen between the primary and secondary wirings. Input and Output is transformer balanced as well as fully floating.

Tube-Tech CM1A Optical Compressor Features

  • Unique low distortion gain-reduction element
  • All tube-based push-pull amplifier
  • Multiple interconnection of several compressors via two busses
  • LED display for monitoring compression and output
  • Continuously variable attack and release time
  • Gain Range (off to +30 dB)
  • Variable Threshold (off to -30 dBu)
  • Frequency response @ -3 dB: 5 Hz to 25 kHz
  • Low noise: < -75 dBu @30 dB gain
  • Clickless bypass switch

Tube-Tech CM1A Optical Compressor Specifications

  • Impedance
    • Input: 600 Ohm
    • Output: <60 Ohm
  • Frequency response: 5 Hz - 25 kHz +0.5/-3 dB
  • Distortion THD+N @ 40Hz
    • 0 dBU 0.15 %
    • +10 dBU 0.15 %
    • Max. output: +26 dBU 1%
    • Max. input: +21 dBU 1%
  • Noise Rg=200 Ohm
    • 22 Hz-22 kHz: Output Gain @0 dB < -85 dBU, Output Gain @+30 dB < -75 dBU
    • CCIR-468-4: Output Gain @0 dB < -75 dBU, Output Gain @+30 dB < -65 dBU
  • CMMR @ 10 kHz: < - 60 dB
  • Gain: off to +30 dB
  • Compressor
    • Ratio: 2:1 to 10:1
    • Threshold: off to -30 dBU
    • Attack: 0.5 ms to 300 ms
    • Release: 0.05 s to 10 s
  • Tracking between connected compressors
    • (0 to 20 dB compression): < +/- 1 dB
  • Tubes
    • ECC 82: 1 pc
    • ECC 83: 1 pc
  • Dimensions
    • Height: 176 mm 6.93"
    • Width: 50 mm 1.97"
    • Depth: 220 mm 8.66?
  • Weight
    • Net: 1.0 kg 2.2 lbs
    • Shipping: 1.2 kg 2.7 lbs
  • Power Requirements: 15W

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