Wow. Two guys with the right answer. Did I log onto another site by mistake? No, it says Audiogon at the top. Incredible. Oh wait, I get it now, 132 posts, 430 posts, new people. Still thinking, haven't been driven off by the BS. That must be it.
Okay. Shock wearing off now. Seriously, read Harley's book. He covers everything. His glossary of audiophile listening terminology alone is worth the money. Mine's the first edition, 1994, and Harley was so far ahead of his time he has chapters and sections devoted to vibration control and how to choose power cords and cables.
There's chapters on room acoustics and he makes it all very understandable even showing how to calculate room modes by frequency. When I hired the local best consultant to design my listening room I came to check one day and caught the guy doing the exact same calculations for my room as described in the book. They were fired on the spot. The book saved me countless thousands of dollars on just that one thing.