Rockford Fosgate Punch P1 P1S815 15-Inch  400 Watt Subwoofer - 8 Ohm 15-inch, 8-ohm subwoofer with 400 watts maximum power handling (200 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 small enclosures