OSD ICE660  6.5" Angled LCR In-Ceiling Speaker 150W  w/Polypropylene Cone Woofer and Pivoting Silk Dome Tweeter (White, Single) Angled speakers provide flexibility in home theater placement; Dolby Atmos ready 6.5" Polypropylene cone woofer; 1" Silk pivoting dome tweeter Frequency Response: 50Hz- 22kHz, Sensitivity: 92db Dimensions: 10-1/2" x 5"; Cutout: 8-1/8"