Working with multiple audio output channels, About audio output presets, About audio output – Apple Final Cut Pro 5 User Manual
Page 848: Presets, P. 61)

Chapter 4
Audio Levels, Meters, and Output Channels
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Working With Multiple Audio Output Channels
Each Final Cut Pro sequence can have up to 99 audio tracks, each of which can be
routed to any physical audio output channel on your audio interface. You can also
assign more than one track to the same physical output. In this case, the signals from
each track are added together, increasing the overall level of that output channel.
About Audio Output Presets
Final Cut Pro can route sequence audio tracks to any supported Mac OS X Core Audio
interface. An audio output preset defines the number of hardware output channels you
want to use with your sequence. Up to 24 audio output channels can be assigned, and
each pair of outputs can be grouped together as a stereo pair, or as two independent,
mono channels.
When a sequence is created, it uses a default audio output preset defined in the User
Preferences Audio Outputs tab. You can choose a different audio output preset for a
sequence at any time in the Audio Outputs tab of the Sequence Settings window.
Audio
interface
Speakers
Timeline
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Right
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