The Tube Tech SMC 2B is a tube based, stereo, multi-band compressor designed to add vintage quality warmth to a mix. The unit features three independent optical stereo compressors with the signal being divided into low, mid and high bands by 6dB/octave crossover networks with selectable frequencies for the low/mid band and for the mid/high band.
The design of the crossover networks optimizes the summing of all three bands, resulting in a flat frequency response (within +/-0.25dB) when the gain controls for each band are set to the same level. Each of the three compressors features threshold, ratio, attack, release and gain, while an LED ladder displays 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 side-chain circuits are based on a solid state circuit. With the exception of the output stage, all DC voltages are stabilized.
Function Stereo compression
Number of Channels 2
Inputs 2 x XLR
Outputs 2 x XLR
Maximum Input Level Not specified by manufacturer
Compression Threshold Off to -20dBu
Compression Ratio 1.5:1 to 10:1
Attack Time 3 mSec to 200 mSec
Release Time 60 mSec to 2 S
Gate Threshold Not applicable
Gate Rate Not applicable
Maximum Output Level >+26dBu
Make-up Gain -1dB to +10dB
Frequency Response 5Hz to 60kHz, @-3dB
Dynamic Range Not specified by manufacturer
Noise @ 0dB output: <-70dBu, 22Hz to 22kHz
@ +10dB output: <-60dBu, 22Hz to 22kHz
Dimensions (WxDxH) 19" x 8 1/8" x 5 1/4"
Weight 13.7 lbs
Specialties Variable crossover frequencies for the three-bands
The Gear Rack