I have a (15(?) year-old pair of American Acoustics bookshelf speakers being used as stereo speakers in a second room off my Sony STR-DA4ES receiver. This is a larger room, 15x20 with a peaked ceiling that starts at about 8.5 feet and runs to about 12 feet high. The speakers are on the long wall. On the left is an 8' by 7' opening to the living ...