Tube-Tech SMC2B Stereo Multiband Compressor
SMC2B Stereo Multiband Compressor
The TUBE-TECH SMC 2B Stereo Multiband Compressor features three independent optical stereo compressors. The signal is divided into three bands (Low, Mid & High) by 6 dB/octave x-over networks with variable frequencies: 60-1200 Hz for Low/Mid band and 1,2-6 kHz for the Mid/High band.
The design of the x-over networks optimizes the summing of all three bands, resulting in a flat frequency response (within +/-0,25 dB), when the gain controls for each band are set at the same level. The three compressors feature Threshold, Ratio, Attack, Release and Gain and a display showing gain reduction. Master levels are set with Output Gain and Balance controls.
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 output stage all DC voltages are stabilised.
Also available in Mastering version: SMC2BM
Product Features
- The world’s first “all tube based” multiband compressor design
- Three bands per channel with variable crossover frequencies between bands
- Stereo sidechain with variable Threshold, Ratio, Attack, Release and Gain controls for all three bands
- Master Output Gain (off to +10 dB)
- Balance Control (+/-1.5 dB)
- LED display showing compression
- Freq. response @ -3 dB: 5 Hz to 60 kHz
- Low noise: < -60 dBu @10 dB gain
- Conductive plastic potentiometers
- Clickless bypass relay
Mastering Version Includes:
- Potentiometers with 31 detents for Threshold, Ratio, Attach, Release and Balance
- Gain controls with 12 positions gold plated switches
- Frequency switches with 6 positions gold plated switches
Impedance Input: | 2 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: | < -70 dBu, < -60 dBu |
CCIR-468-4: | < -60 dBu, < -50 dBu |
Cross talk @ 10 kHz: | < -40 dB |
CMRR @ 10 kHz: | < -60 dB |
Max. output @ 1 % THD+N: | > +26 dBu |
Gain: | |
Output: | off to +10 dB |
Low-, Mid-, & High band: | off to +10 dB |
Tracking between channels: | < 0.5 dB |
X-over frequencies | x1 x4 |
Low & Mid band: | 60 to 300 Hz, 0.24 to 1.2 kHz |
Mid & High band: | 1.2 to 6 kHz |
Mastering version: | |
Low & Mid Band: | 60, 100, 160/ 0.24, 0.4, 0.54, |
200, 300 Hz / 0.8, 1.0, 1.2 Hz | |
High & Mid Band | 1.2,2.0.3.2 / 4.0, 4.8, 6.0 kHz |
Compressor | |
Ratio: | 1.5:1 to 10:1 |
Threshold: | off to -20 dBu |
Attack: | 3 ms to 200 ms |
Release: | 60 ms to 2 s |
Tubes | ECC 81 4 pc |
ECC 82 2 pc | |
ECC 83 2 pc | |
Dimensions | |
Height: | 3 units 132 mm 5.2" |
Width: | 480 mm 19.0" |
Depth: | 205 mm 8.1" |
Weight | |
Net: | 6.2 kg 13.7 lbs. |
Shipping: | 7.5 kg 16.5 lbs. |
Power requirements | @ 115 V/230 V, 50-60 Hz: 30-45 W |