This subwoofer provides more bump with less bulk. It is the first reactance-canceling in-wall subwoofer. Vibration and sound distortion are eliminated leaving clear a crisp sound to make the biggest audiophile pee themselves a bit. It look's good, it would fit nicely into an acoustic scheme of any room and carries a rather large $2,000 price tag. The subwoofer itself measures 23.5 inches tall by 9.5 inches wide and is equivalent sounding to a 12-inch round subwoofer.

Vibration-free, reactance-canceling, in-wall subwoofer [Gizmag]