PreSonus ACP88 - Manual (Page 13)

CONTROLS & CONNECTIONS
10
2.4 Gain
• Gain
When compressing a signal, Gain reduction usually results in an overall reduction of
level. The Gain control allows you to restore the loss in level which occurs due to the
amount of compression used. (like readjusting the volume.)
2.5 Bypass & Link
• Bypass
Activating the Bypass effectively removes all processing being performed by your ACP-
88 and returns the signal to unity gain. You should use Bypass often when setting up
your ACP-88 to compare the ‘before and after’ results of the signal processing effecting
your audio signal. Bypass affects both the Gate and the Compressor. When
Bypassed, the Link function is interrupted for that channel and essentially breaks the
link in your linking ‘chain’.
• Link
When the Link button is engaged (pushed in) the LED labeled LINK becomes active
indicating this channel has become the slave of the channel to its immediate left (The
Link LED is only active when the signal is present in the Linked channel). All of the
controls for the Linked channel become disabled and metering occurs by way of the
Gain reduction meter of the channel to the left (Exception: the LED meter of the
Slaved channel is still useful to indicate the presence or lack of signal). Essentially, the
left channel is still the Master and the channel with the Link button pushed in is the
Slave channel in a stereo linked pair. If multiple Link buttons are pushed in, then the
channel farthest to the left of the multiple Linked channels (without its link button pushed
in) becomes the Master for the multiple Linked channels. In this case, all metering
should be referred to the Master channel’s meter.
*IMPORTANT: When a channel is Linked (link button pushed in), all of it’s controls
are inactive. The Link LED is active. Also, even though the meters on the Linked
channel are still operational
(presence or lack of signal), all metering should be
referred to the Master channel’s meter for the Gain reduction level of the Linked
channels!