actually since I enclosed in my HUGE Porterplex V1 and V2 theater to be isolated from the rest of the rec room/bar area, the overall dimensions are much smaller. Not sure how I would integrate 4 ceiling speakers, might have to consider just 2.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB SonyUBPX800