Massive Audio 12 Inch 4000 Watt Subwoofer Dual 4 Ohm Mega HIPPOXL124 — Big Jeff Online Inc
Custom Ported Sub Enclosure Box for 1 15" Massive Audio BOA 151 Subwoofer ~BIRCH | eBay
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