W672 InWall Series Whole House Series W672 ‹ › Technical Data: 6½" Polypropylene Woofers 1" Pivoting Silk Dome Tweeter Power Handling100 Watts Frequency Response36Hz – 20kHz Impedance8Ω Sensitivity91dB 1W/1m Dimensions (H x W x D)12¼" x 8-3/16" x 3-3/16" Wall Cut Out (H x W)10-7/8" x 6¾" Replaces W670 Inwall Speaker