3000W 12inch 15inch High Power Long Power Car Subwoofer - China Audio Speaker, Subwoofer | Made-in-China.com
Turbosound iQ18B 3000W 18 inch Powered Subwoofer with DSP | Sweetwater
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