Amazon.com: Massive Audio SUMMOXL124-12 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 12" Subwoofer 1500 Watt RMS, 3000w MAX Dual 4 Ohm, 3 Inch Voice Coil. Sold Individually : Electronics
Rockford Fosgate T3S2-19 19" 3000W RMS Single 2-Ohm Subwoofer
Behringer B1800XP 3000W 18" Powered Subwoofer at Gear4music