SMC 2BM
Sound demo of Tube Tech SMC 2BM Mastering Compressor
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From Tube-Tech
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.
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 |
Watch & listen
Free 3-Year Warranty
In addition to the standard included manufacturer warranty, virtually all new products carry our exclusive, industry-leading, absolutely free Sound Pure 3-Year Warranty, which includes parts and labor. It's our way of adding real value to the personal touch our small, dedicated team brings to every purchase.
Coverage exclusions live in Terms & Conditions, Section 27. Read the warranty →
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