Skar Audio VVX-8v3 D4 8" 800 Watt Max Power Dual 4 Ohm Car Subwoofer 8-Inch Dual 4 Ohm Car Subwoofer Peak Power: 800 Watts RMS Power: 400 Watts Competition Grade Pressed Paper Cone and High Roll Foam Surround 2" High Temperature Copper Voice Coil - Spl: 83.9 dB