Linked Operation - BSS Audio DPR 404 User Manual

7.4 Linked For stereo program processing, channels 1 and 2 can be linked together by
selecting the LINK switch on channel 2. Channel 1 will assume the master
operation
role, such that threshold, ratio, attack and release for channel two are equal to
and controlled by channel 1 with the side chain controlling signal being the
mono sum of both channels. This facility is also repeated for the second pair,
channels 3 and 4. HF de-essing is similarly treated, when using the LINK
mode. When processing stereo program, it is always important to maintain the
stereo imaging and prevent an audible shift in positioning. Channels 1 and 2
plus channels 3 and 4 can be selected to work as linked stereo pairs enabling
a stereo program to be successfully processed. Selecting the LINK switch on
channel 2 (or channel 4) re-connects the side chain circuitry such that
channel 1 (or channel 3) now derives the controls voltages for the summed
left/right program signal and applies it equally to both channels. Channel 1 (or
channel 3) is called the master, whilst channel 2 (or channel 4) the slave. The
master channels threshold, attack, release and ratio controls will now control
both master and slave channels simultaneously, with those on the slave
channel becoming inoperative.
13