maybe you can't hear in your right ear. and obnoxiously loud music isn't going to help your left ear. sorry if i'm sound rough but considering your condition i'd really take a bit of care with music. ok, back to the sound problem. what's wrong with having multiple sources playing the same frequency is interference (not talking about bass because of the huge wavelengths involved). each source interferes with the other in a diffrent way at your ear because the distances aren't the same. and that means clarity will go out the window. whole lot diffrent compared to running a single, more powerful, more efficient source. at the very least i'd source some very efficient tweeters and use only 2 up front. don't start the "i don't want sq" theme. if you want loud and really don't care about a tiny bit of clarity, play pink noise and forget about music.