It has been a long time since I had to reset mine! I think it is nested in the menus but can't be 100% sure. While I love the SSP-800 the menu structure is a bit confusing, you can easily go back and correct the setting or use another profile if you screwed up the speakers and don't want to fix them, I used to keep two profiles depending on what speakers I was using and it is easy to switch between them.
Wish I could be of more specific, but I do believe it is in the menus....
Wish I could be of more specific, but I do believe it is in the menus....