American Bass XFL-1522-V2 DVC2 15 in. Subwoofer 1000 RMS DVC - Walmart.com
Amazon.com: Massive Audio KILOX104-10 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 10" Subwoofer 1000 Watt RMS, 2000w MAX Dual 4 Ohm, 3 Inch Voice Coil. Sold Individually : Electronics
18 Inch PA Speaker 1000RMS Subwoofer L18/8631 Professional Loudspeaker with 6 Inch Voice Coil Speaker Driver - China 18'' Subwoofer and Loudspeaker price | Made-in-China.com