Apple Logic Pro 9 - Manual (Page 1177)

Channel mapping, panning, and mixing are handled behind-the-scenes. You do, however,
have some control over the mix:
• Dest Format pop-up menu: This pop-up menu allows you to choose the surround
destination format: To Quad, To LCRS, To Stereo.
• Generic level sliders: These sliders control the respective channel levels. The number,
and names, of sliders depends on the chosen plug-in format.
Working with Multi-Channel Effects
Effects that are not available as true surround effects can be inserted as multi-channel
effects on surround channels: Logic Pro matches the surround format of a channel by
automatically providing the required number of stereo and mono instances of the plug-in.
Learning About the Advanced Plug-in Header
Multi-channel effect plug-ins offer an advanced plug-in header.
It can include a tab for each effect instance, an LFE tab, and a Configuration tab. The
effect tab labels indicate if effect instances are loaded in stereo or mono. Channels joined
with a “-” are loaded as a stereo instance. Channels separated with a “|” are mono. To
explain:
• L-R|Ls-Rs|C denotes left/right stereo, left/right surround stereo, and mono center.
• L-R|Rs|C (a separate left surround tab is shown) denotes left/right stereo, mono right
surround, mono center.
1177 Chapter 39 Working with Surround