Agc switch, Sidechain link, Controls link – Universal Audio UAD Plug-Ins ver.7.5 User Manual
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UAD Powered Plug-Ins Manual
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Chapter 14: Fairchild Tube Limiter Collection
AGC Switch
This switch determines whether the two compression chan-
nels will receive left/right or lateral/vertical (mid/side) sig-
nals as the inputs.
In conjunction with the
termines the operating mode of the Fairchild 670. See
for detailed mode descriptions.
Note:
This control is unavailable on the Fairchild 660.
Left/Right
If Left/Right is selected and Sidechain Link is off, the compressor is in dual
mono mode. If Sidechain Link is on, the mode is stereo left/right.
Lat/Vert
If Lat/Vert (mid/side) is selected and Sidechain Link is off, the compressor is
in dual lateral/vertical mode. If Sidechain Link is on, the mode is stereo lat-
eral/vertical.
Sidechain Link
When this control is set to Link, it causes the two channels of the com-
pressor to compress in equal amounts. This does not mean that the
compressor will be equally sensitive to either channel however; that
depends on the settings of the other controls.
Note:
This control is unavailable on the Fairchild 660.
Linking the sidechains simply means that the instantaneous amount of com-
pression for the two channels will always be the same, thereby preventing left-
right image shifting at the output. Threshold and input gains can be set inde-
pendently to cause the compressor to be more sensitive to instruments which
are panned to one side or the other. Output controls can be set separately in
order to correct an overall image shift at the output.
Tip:
In conjunction with the
switch, the Sidechain Link switch de-
termines the operating mode of the Fairchild 670.
Controls Link
This switch allows the two sets of controls for the interface to be ste-
reo linked. The control is unavailable on the Fairchild 660.
Important:
When unlink is switched to link, the left channel val-
ues are copied to the right channel, and any control offsets between
channels are lost.