The RSW-15 was VERY impressive when used in a 5.1 system with Jubilees as mains, K-horns (or a series of Heresies) as rears and a Belle as a center. It had the output capability to match the Jubilees. When pushed really hard, its distortion was probably higher than optimum, but it was not objectionable. At sane levels it sounded nice and it could move air! I'd have one.
John