SpeakerCraft AIM8 One 8" AIMABLE INCEILING SPEAKER (EACH) Pivoting and Rotating 8" Injection Molded Polypropylene Cone Woofer Pivoting 1" Treated Silk Dome Tweeter Power Recommendations: 5 - 100 watts (undistorted) Impedance: 8 OHMS Cut-Out Diameter: 9 3/4" (248 mm)