Skar Audio MA-8 D4 8" 800 Watt Max Power Dual 4 Ohm SPL Car Subwoofer 8-Inch Dual 4 Ohm SPL Car Subwoofer Peak Power: 800 Watts RMS Power: 500 Watts 2" High Temperature 4-Layer Copper Voice Coil Competition Grade Paper Cone, High Quality Foam Surround