I'm hoping for a little advice on my setup in a tiny apartment. I've already got a 1080p projector showing on an 80" diagonal wall mounted screen. I want to put a polk surroundbar 50" under the screen, and I need advice on a receiver. I really don't need many features, all my audio comes from an optical connection to a mac mini (and occasional ipod plug-ins). No video needs to run through it, I run hdmi straight to the projector from the mini. All I need in a receiver is dolby decoding, and 5 channels out to the soundbar, and powered sub. I'm considering the Onkyo tx-sr307, will this be powerful enough? Considering the polk psw10 for the sub. I want to try to keep it simple and inexpensive. Any advice would be appreciated. Thanks.