Tube Tech CL 2A Dual Opto Compressor
The TUBE-TECH CL 2A Two-Channel Optical Compressor is an all tube based compressor / limiter targeted at two-channel studio recordings.
The TUBE-TECH CL 2A Dual Compressor features two independent optical compressors/Dynamics. The optical gain reduction element is placed after the input transformer and then followed by an all tube-based output amplifier with a +10 dB gain. A switch with three positions (Link 1, Off, Link 2) is used whenever you want to use the two separate compressors/Dynamics in stereo mode or link several compressors/Dynamics together. The two link busses are identical.
Both Input and Output are balanced and have fully floating transformers with a static screen. The power supply and the sidechain circuit is based on a solid state circuit. With the exception of the anode voltage for the output stage all DC voltages are stabilized.
Features
- Low-distortion optical gain reduction element
- All-tube based push-pull amplifier
- Frequency response @ -3 dB: 5 Hz to 60 kHz
- Low noise: < -80 dBU @ 10 dB gain
- CMRR: > 60 dB @ 10 kHz
- Variable ratio from 1.5:1 to 10:1
- Continuously variable attack and release times
- Output gain: Off to +10 dBU
- Variable threshold: Off to -20 dBU
- VU meters show output or compression
- Linkable for stereo applications
- Interconnection of several compressors/Dynamics via two busses
- Clickless In/Out relay
- Conductive plastic potentiometers
- Gold plated switches
- Input and output are transformer balanced and fully floating
Specifications
Impedance
- Input: 5 kohm
- Output: < 60 ohm
Frequency response @ -3 dB: 5 Hz to 60 kHz
- Distortion THD+N @ 40 Hz
- 0 dBu: < 0,15 %
- +10 dBu: < 0,15 %
Noise Rg=200 ohm
- Output Gain @ 0dB +10 dB
- 22 Hz-22 kHz: < -80 dBu < -80 dBu
- CCIR-468-4: < -70 dBu < -70 dBu
Cross talk @ 10 kHz: < -60 dB
- CMRR @ 10 kHz: < -60 dB
- Max. output @ 1 % THD+N: > +26 dBu
- Gain: off to +10 dB
- Compressor
- Ratio: 1,5:1 to 10:1
- Threshold: off to -20 dBu
- Attack: 3 ms to 60 ms
- Release: 60 ms to 2 s
Tubes
- ECC 82 2 pc
- ECC 83 2 pc
Dimensions
- Height:2 units 88 mm 3,5″”
- Width: 480 mm 19,0″”
- Depth: 205 mm 8,1″”
Weight
- Net: 5,8 kg 12,8 lbs.
- Shipping: 7,1 kg 15,6 lbs.
Power requirements @ 115 V/230 V, 50-60 Hz: 35 W