Thanks, guys, for your input and response to my inquiry. Spiker, I especially appreciate the link to Realtraps you included with your post. The information at their site helped clarify for me acoustical properties that I only vaguely perceived. What they say makes sense, and since I know nothing, I will have to take it on faith that this appraoch will yield noticable results. The most challenging aspect of this project is to convince my wife that an installation of acoustic panels will visually improve our living room.