Thanks guys for the info. I will soon be building out a small room for for music and home theater, and will be depending on this forum for a lot of info. As the room will be small, 13 X 15, 8' ceiling height, I have already decided on the M22 or W22 as the fronts, with the QS8's as surround, QS 4's appear to be adequate, but for a hundred more.... All will be powered by an HK 635.