So basically, I designed a mixer panel for monitoring my band when we play live. However, some of us play with a stereo in ear monitoring system and some of us use a mono speaker by their feet. I don't want things that are panned to the right not to be heard on the mono speakers when they are connected to the left output.
This means I need my mixer to have a mono/stereo switching system. I'm not sure if I want to use switched jack ports to have it automated. If I want that, how do I do that?
The other option is to make a button to switch the system to mono or stereo. This schematic I made very quickly and not very clean will do that? Or will it not mix both channels to the left output correctly?