Mastering Warmth In Stereo
The TUBE-TECH SMC 2BM Stereo Multiband Compressor is an all tube-based compressor that adds the warmth of vintage quality masters to your mix.

Switchable crossover points ensure precise control with all three bands of opto-compression. Independent band specific Threshold, Ratio, Attack, Release & Gain parameters make the SMC 2BM as flexible as it is accurate.

Gain controls are fitted with 12 position gold plated switches with 1dB/step.

Threshold, Ratio, Attack, Release and Balance controls are fitted with potentiometers with 31 detents.
Product Description
The TUBE-TECH SMC 2BM 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 12 selectable frequencies: 60 – 1200 Hz for Low/Mid band and 6 selectable frequencies: 1,2 – 6,0 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.
Key Features
  • The world’s only “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
  • 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
  • Clickless bypass relay

  • 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: -1 to +10 dB, 1dB/step
    Low-, Mid-, & High band: -1 to +10 dB, 1dB/step
    Tracking between channels: < 0,1 dB

  • X-over frequencies x1 x4
    Low & Mid band: 60, 100, 160, 200, 300 Hz 0.24, 0.4, 0.54, 0.8, 1.0, 1.2 Hz
    Mid & High 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



Copyright © 2005 AudioPro International Inc. All rights reserved.