Apple Logic Pro 9 - Manual (Page 1164)

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Click one of the three Initialize buttons below the Show As pop-up menu.
• Default: Click to activate the default setup of Logic Pro. For example, for the 5.1 format,
this means that output 1 is routed to the left speaker, output 2 to the right one, output
3 is assigned to left surround, output 4 to right surround, output 5 to the center speaker,
and output 6 to the LFE channel.
• ITU: Click to assign the International Telecommunications Union standard, used by
many professionals.
• WG 4: Click to use the WG4 standard, set by the DVD Forum for DVD-Audio.
To determine which inputs are used for each surround channel
Do one of the following:
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Choose the input of your audio interface from each of the active pop-up menus: Left,
Center, Right, and so on.
1164 Chapter 39 Working with Surround