MA Audio MA120XE 12" Inch 700 Watt Car Sub Dual Voice Coil Subwoofer 700 Watts Power Handling - 350 Watts RMS Power Handling 4-ohm Copper Clad Aluminum Wound Dual Voice Coil Hi-Temp Kapton Voice Coil Former 150oz. Double Stacked Strontium Magnet Structure Platinum Plated Block Terminals