Buzz Audio dbc-20diode bridge compressor - Manual (Page 5)

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HARD-SOFT
This control selects between two modes of operation. In HARD mode the self-
adjusting ratio control is in normal operation. When switched to SOFT the
automatic ratio is modified and a measured amount of dynamic is retained. It’s
easier to try it and hear how it works rather than describe it here, but it is useful
when lighter compression effects are desired.
FLAT-BASS
When switched to BASS, a high pass filter in the DBC side chain is introduced
which reduces the sensitivity of the compressor at low frequencies. This is
useful in maintaining the low end of a full mix or perhaps only controlling the
high end of a bass track.
BYPASS-ENGAGE
In the up position, this switch provides a hard relay bypass of audio input to
audio output with no electronics in the signal path. This is useful in comparing
the compressed to un-compressed signal. When using the DBC with stereo
signals, both A and B channels’ bypass switches would be operated together
for a meaningful result.
SEPARATE-LINK A/B
In SEPARATE mode, the DBC-20 operates as two completely individual mono
channels. When switched to LINK A/B, the compressor side chains are linked to
provide stereo tracking. This mode is used to prevent the stereo “image”
shifting if a loud sound appears only in one channel of a stereo mix.
Note that unlike some VCA based compressors, all controls remain operational
in LINK A/B mode. You MUST still set up both A and B channel’s controls
usually with identical settings for stereo program. Note the COMPRESSION
controls of each channel are interactive, so reducing the compression on one
channel results in a measured amount of reduction in the other channel.
POWER ON
This switches the mains power to the DBC-20 on and off. An aqua colored led
tells you when you have successfully achieved this operation. The DBC bypass
relays are engaged for a few seconds at power up to prevent thumps.