Surround panning in the Mixer
You can mixdown in several surround formats, even if your audio hardware offers only two outputs. Because it would be difficult to mix or record in surround format without being able to hear the result, it’s best not to select this option if you’re monitoring or mixing through stereo speakers. All audio, instrument, and aux channel strips can be individually set to different surround formats.
Surround panning is available when Surround is selected in the Advanced preferences pane.
Set a channel strip’s output to surround
Click-hold the channel strip’s Output slot, then choose Output > Surround from the pop-up menu.
The Surround Panner control replaces the Pan knob. The loudspeakers are represented by dots, and the pan position is indicated by a green dot that can be dragged.
For full details about using the surround feature, see Logic Pro X surround overview.