The BC1-THD provides smooth bus compression that applies for both mixing and tracking.


Engineers call it "The Magic Glue" when the BC1-THD's transparent compression strengthens mixes without compromising clarity.

The built-in blend control makes it easy to apply parallel compression by adjusting the blend of dry and compressed signal. A switchable sidechain filter can be applied which makes the BC1-THD less responsive to low frequency energy. The THD function adds more harmonics to the signal and the "grab" mode selects a harder threshold knee on all four ratio settings. Smooth and transparent compression will never go out of fashion.
Features
Threshold: -20dB to +20dB
External sidechain: in/out
Ratio: 1.5:1 / 2:1 / 4:1 / 10:1 /
HP Filter: 80Hz, 150Hz, 220Hz, -6dB octave
THD: adds more even harmonics
Grab: selects a harder thres hold knee
Attack: /0.1/0.3/0.6/1/3/6/10/30/60/120mS
Release: 50mS/100mS/300mS/600mS/1.2S/Auto
Gainreduction meter
Make-up: 0 to +20dB
Dry signal mute
Blend control: from dry to compressed
Compression in/out
External sidechain input: unbalanced TRS jacks
Internal, regulated powersupply with a toroidal transformer
115 or 230V, selectable
Specifications
Frequency response: 20Hz to 20kHz less than -0,025dB
Frequency response: 20Hz to 80kHz less than -0,3dB

Blend control fully CW (dry)
THD+N @ 0dBu: less than 0,0045%
THD @ 0dBu: less than 0,001%
THD+N @ +26dBu: less than 0,02%
THD @ +26dBu: less than 0,02%

Blend control fully CCW (straight)
THD+N @ 0dBu: less than 0,00045%
THD+N @ +26dBu: less than 0,0003%

Input impedance: 20kohm
Output impedance: 50ohm
Max input level: +26dBu
Max output level: +27dBu @ 600ohms load