Two 8-inch subs with special aluminum cones anodized to give it a ceramic coating. Supposedly second in strength only to diamond. Rigidity = good for nice, taut, bass. Oh, all that room you're saving? You'll need to use to rackmount the 500-watt RSA-500 amp that powers it. $500 for the sub, $750 for the amp. Oh CEDIA, you're sooooo for rich guys.
Klipsch Wall Subwoofer RW-5802 [audioholics]