4" x 6" XSR Series 4-Way Car Speakers Power Handling: Peak: 200 watts per pair / 100 watts each RMS: 30 watts per pair / 15 watts each Mica filled polypropylene matrix cone Rubber coated cloth surround 1-7/16" balanced dome piezo mid-range 2 11/32 PEI piezo tweeters CEA-2031 compliant speakers Ferrite magnet motor structure Top-mount Depth: 1-3/4" Cutout Dimensions: 5-1/8" 4 ohms impedance Frequency Response: 60 - 24000 Hz Sensitivity: 89dB