Manufactured by JBL when Harman Inc owned Audioaccess, this is a dual 8-inch 250-watt passive subwoofer for in-wall applications; a single unit may be driven as a stereo pair or the speakers may be strapped together for mono sub use. Drivers designed with cast baskets and aluminum cones provide rigidity, very high efficiency and high-power handling. An ultimate in dual 8-inch design for home theater use or where premium multiroom performance is desired.

http://www.audioaccess.com/products/aas88.asp