Apple Logic Pro X - Manual (Page 730)

Chapter 22 Surround in Logic Pro X 730
Set up Logic Pro X for surround
Set surround preferences
Before you can create a project in surround, you need to specify which outputs of your interface
are connected to which speaker. If you’re recording in surround, you also need to specify the
inputs of your audio interface.
These configurations are made in the Output and Input panes of the Audio > I/O Assignment
preferences. The I/O Assignments tab features three subtabs: Output, Bounce Extensions, and
Input. All three tabs are linked, but can be adjusted independently.
Note: In all but the rarest circumstances, the default settings for each surround format should
meet your needs.
Open the I/O Assignment preferences
m Choose Logic Pro > Preferences > Audio, then click the I/O Assignments tab (or use the Open
Surround Preferences key command).
Set the output or input surround channel assignment
1 Click either the Output or Input tab.
2 Choose the surround format you want to work in from the “Show as” pop-up menu.
This action automatically sets the input and output channel pop-up menus in both the Output
and Input tabs.