There are many discussions on AVS about acoustics. Try a couple of searches and you may find what you need. Also, I know there are a lot of different discussions and a lot of them turn into arguments which used to confuse me. I'm using info I found on Ethan Winer's acoustic FAQ: http://www.ethanwiner.com/acoustics.html
A forum community dedicated to home theater owners and enthusiasts. Come join the discussion about home audio/video, TVs, projectors, screens, receivers, speakers, projects, DIY’s, product reviews, accessories, classifieds, and more!