My school just got a new hi res projector and when they were installing it our superintendent commented on the fact that the auditorium has a mono system and jokingly said that we should get surround for watching movies. I seriously doubt this will happen (though we may move to a stereo system) but it poses an interesting question. Is there a way to run 5.1 surround through the Yamaha M7CL?
The best method I was able to come up with was running the video out of qlab and through an audio interface (lets say a focusrite saffire pro 24) with each of the six surround channels (Left Front, Center Front, Right Front, Left Rear, Right Back, Subwoofer) running into an analog input on the M7CL (we have an AD card with 8 TRS inputs) and then routed directly to a matrix for each speaker.
If anyone has any better suggestions for how to do this please let me know. Good Luck!