Hello, my first post here. The name says it all. Building a grancave/cinema and about to buy some wall plates so my speaker cables are tucked away nicely behind the wall. I'm a total novice and have very little knowledge of what plugs into where, so I need some advice, or a decent wiring map with the names of everything on it. I'm guessing my projector will need an hdmi cable going to the receiver. Please correct me if I'm wrong. The receiver will also have hdmi cables running to xbox, bluray player, and speaker cables (I think). What have I missed? Is there anything else that comes out of the projector, apart from the power cable? From looking at pictures of projectors I see there's a lot of plug holes in the back of them but not sure what they're all for, or if they're all needed. I need to know because I'm buying wall plates for the speaker and it would be neater if I got one with an hdmi so I can tuck that up in the ceiling and run it down behind the wall to the wall plate. ps, is a receiver an amp or do I need one of them too? Cheers for any help.