IWS85 Subwoofer Series In Wall Subwoofer IWS85 ‹ › Technical Data: Passive 8" Inwall Sub WooferTwo 8"Long Excursion Graphite Cone Power Handling200 Watts Frequency Response30Hz – 120Hz Dimensions H 20" x W 11 1/8" X D 2 1/2" Wall Cut OutH 18 1/2" X W 9 ¾"