Define a channel strip’s stereo output
In Logic Pro, you can choose the physical output pair on which the stereo output is played. By default, it’s played on Stereo Output (Output 1-2). However, you can easily change the stereo output preference—if you’re exchanging projects with another studio that uses a different output pair, for example.
You can also define the output pair for individual channel strips in the Mixer.
Define the stereo output for a channel strip
Choose Logic Pro > Preferences > Audio.
Click I/O Assignments, then click Output.
Choose an output pair from the Output pop-up menu in the Stereo section.
The Mirroring checkbox becomes available for all chosen output pairs, with the exception of Output 1-2.
Do one of the following:
Deselect the Mirroring checkbox to have the output signal routed to the chosen output pair (Output 3-4, for example).
Select the Mirroring checkbox to have the output signal routed to the chosen output pair (Output 3-4, for example), as well as to the physical outputs (Output 1-2). This is useful when feeding the signal to a second pair of monitors, for example.
Define the output pair for a channel strip
Click-hold the channel strip’s Output slot, then choose an output pair from the pop-up menu.