M & S Systems ROCK-8R 8" 2-WAY 100 Watt Gray Granite Rock Speakers Power handling: 100 watts 8" polypropylene woofer with separate 2" polypropylene tweeter Weather-resistant, fiberglass Frequency response: 100 Hz&#8211;20 kHz 13 1/2"H x 19 1/2"W x 13 1/4"D