If you(the O.P.) really care, obtain a copy of The Master Handbook of Acoustics by F. Alton Everest. Beginning on page 100(well, mine is a first edition from 1981) there are a series of formulas, suggestions and explanations, regarding indoor acoustics, reverberation times, avoiding resonances, modes, etc. I've found it an invaluable resource, over the years. (http://www.amazon.com/Master-Handbook-Acoustics-Alton-Everest/dp/0071603328)
Proper Room Designs/Dimensions for Best Acoutics
I have the chance, to build from ground up, a dedicated listening room. I spoke with Dennis Foley and was very impressed with his ideas. Does anyone have any experience with him either directly or indirectly? Does anyone have any general recommendations for me as far as design or dimensions? I know about the "golden ratio" etc.