Apple Logic Pro 9 - Manual (Page 1176)

Tip: It is possible to release the mouse pointer on the plug-in name, instead of navigating
all the way through the hierarchy to the channel format. This automatically opens the
plug-in using the default channel strip format.
To insert plug-ins that do not match the channel format
µ
Option-click a channel strip Insert slot.
The Plug-in menu displays all formats the plug-in has to offer, rather than being limited
to the matching format.
Any down- or upmixing that may be necessary will happen automatically.
• The default format of software instruments is stereo (if available). Mono and the project
surround format are offered as additional formats.
• The default format of effect plug-ins is the current channel strip format (at the insert
point in the signal path).
• In addition, all plug-in format variations (based on the current channel strip input
format, and all available plug-in output formats) are offered, up to the maximum allowed
by the project surround format.
• Logic Pro effect plug-ins can also be operated in a multi-mono configuration, based
on the project surround format.
Logic Pro automatically performs surround down and upmixes whenever the format of
the input and output channels don’t match. For example, if you insert a quad plug-in
into a 5.1 bus, Logic Pro performs a downmix from 5.1 to Quad, followed by an upmix
back to 5.1.
Using the Down Mixer Plug-in
You can use the Down Mixer plug-in to adjust the input format of the surround master
channel strip. This allows you to quickly check the surround mix in stereo, for example.
1176 Chapter 39 Working with Surround