CL-1B-Perspective

The TUBE-TECH CL1B 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.

The gain-reduction element is followed by a tube-based push-pull amplifier with variable gain up to 30 dB. A dedicated Bus selector with three positions (Off, Bus 1, Bus 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. Both Input and Output are balanced as well as fully floating.

CL-1B-FrontCL1BrearProduct Features

  • Unique low distortion gain-reduction element
  • All tube-based push-pull amplifier
  • Multiple interconnection of several compressors via two busses
  • VU-meter for monitoring input, compression and output
  • Continuously variable attack and release time
  • Gain Range (off to +30 dB)
  • Variable Threshold (off to -40 dBu)
  • Frequency response @ -3 dB: 5 Hz to 25 kHz
  • Low noise: < -75 dBu @30 dB gain
  • Clickless bypass switch

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Specifications

Impedance Input: 600 ohm
Output: < 60 ohm
Frequency response @ -3 dB: 5 Hz to 25 kHz
Distortion THD+N @ 40 Hz 0 dBu: < 0.15 %
+10 dBu: < 0.15 %
Noise Rg 200 ohm
Output Gain @ 0dB +30 dB
22 Hz-22 kHz: < -85 dBu < -75 dBu
CCIR-468-4: < -75 dBu < -65 dBu
CMRR @ 10 kHz: < -60 dB
Max. output @ 1 % THD+N: > +26 dBu
Gain: off to +30 dB
Compressor
Input: Ratio: 2:1 to 10:1
Threshold: off to -40 dBu
Attack: 0.5 ms to 300 ms
Release: 0.05 s to 10 s
Tubes ECC 82 1 pc
ECC 83 1 pc
Dimensions
Height: 3 units 132 mm 5.2"
Width: 480 mm 19.0"
Depth: 170 mm 6.7"
Weight
Net: 4,1 kg 9.0 lbs.
Shipping: 5.9 kg 13.0 lbs.
Power requirements @ 115 V/230 V, 50-60 Hz: 22 W