W12GTI II | 12 inch Differential Drive Design Subwoofer
American Bass Car Audio 10“ Subwoofer HD Series 4000 Watt Dual 2 Ohm HD-10-D2 | eBay
Amazon.com: Massive Audio SUMMOXL104-10 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 10" Subwoofer 1500 Watt RMS, 3000w MAX Dual 4 Ohm, 3 Inch Voice Coil. Sold Individually : Electronics