This is a little bit off topic. I'm looking for another forum where people talk about the theory of loudspeaker design. Anyone got some URLs? What I'm trying to find out is which kind of stereo speaker would be the least sensitive to placement within a listening room. For example maybe rear ported cabinets are effected by the back wall more then front ported or acoustic suspension designs. Then what about tweeters that face rearward or upward? Line sources? The problem is I have a horrible shaped listing area that looks like two "L" shapes that intersect and I want to fill the space. Speakers I've tried seem to have a very small "sweat spot" only a few feet wide. I did not mean to start a long thread here but posted the question to show the types of question that might be covered in the forum.