Massive Audio 15" 1400 Watt Subwoofer Dual 4 Ohm Voice Coil GTX154 — Big Jeff Online Inc
Massive Car Audio 15 Mega Neodymium Subwoofer 12000 Watt Dual 1 Ohm VC — Big Jeff Online Inc
Amazon.com: Massive Audio KILOX154-15 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 15" Subwoofer 1000 Watt RMS, 2000w MAX Dual 4 Ohm, 3 Inch Voice Coil. Sold Individually : Electronics