Tube-Tech CL1B Compressor/Limiter
CL1B Compressor/Limiter
The TUBE-TECH CL1B Compressor has become a worldwide studio staple for smooth tube compression. The CL1B 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.
Product 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
Online manual (PDF)
Audio Samples (YouTube Playlist)
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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 |
1 year manufacturer warranty |