JL Audio 12TW3-D4 12" 400W Dual 4 Ohm Thin-Line Component Car Subwoofer 12TW3-D4 - JL Audio 12" Dual 4-Ohm W3 Thin-Line Series Subwoofer Power Handling: Peak: 800 watts RMS: 100-400 watts Mica-filled polypropylene cone Rubber Surround Top-mount depth: 3-1/2"