JL Audio 8W3V3-4 8" Single 4-Ohm W3V3 Series Subwoofer 8" Single 4 ohm W3v3 Series Subwoofer Mineral-filled polypropylene cone woofer250 Watts RMS / 500 Peak Rubber surround Top Mount Depth: 4.63" Cutout Diameter: 7.09"