Definitive Technology® IW Sub Reference™ Ultra High-Performance In Wal

IW Sub Reference Fully-Enclosed In-Wall SubwooferInside the completely self-enclosed in-wall sub is the technical brainpower derived from Definitive's award winning SuperCube free-standing subwoofers. It includes a special shallow-depth, long excursion active 13" driver pressure-coupled to a 13" Ultra Low Bass radiator