I am using a Pioneer VSX-1131 and I know you can use the on-screen settings to switch from A to AB or B speakers in a 5.1 setup, but I want to use the buttons on the receiver to do this. Does anyone know how to switch to just the B speakers? I used to know how, but forgot what the buttons were. Not sure why they didn't put that information in the manual. I really don't want to drop my screen and turn on the projector to listen to music outside.
