I'm sound engineer for a student band that has hit it pretty big locally, and they're playing at a 1000 person venue in two weeks. House system is extremely well outfitted (although i'm borrowing a mixing deck from the college) however it's set up in LCR+Sub feeds. I always mix LR+S when available, or LR, but I've never mixed with a center channel cluster before. House engineer hasn't been particularly helpful so far (well I can turn it off if you want was his reply) so I'm looking for some very broad conceptual advice of how to approach LCR.
Mix surface is an iLive system