Rockford Fosgate Punch P2 P2D215 15-Inch  500 Watt Subwoofer - 2 Ohm 15-inch, 2-ohm dual voice coil subwoofer with 500 watts maximum power handling (250 watts RMS) Thermoformed polypropylene cone with high-density poly-foam surround High-temp voice coil with spun-laced Nomex re-inforcement collar Mount in either direction; reversible trim ring included Designed for standard sealed and vented enclosures