Boss Audio 8-Inch Dual Voice Coil 4-Ohm 1000-Watt Car Subwoofer, Black | P80DVC
American Bass XR-10D2 10" Subwoofer Dual 2 Ohm Sub 2000W Max 1000 Watts RMS 685650089492 | eBay
Amazon.com: 10" Car Audio Speaker Subwoofer - 1000 Watt High Power Bass Surround Sound Stereo Subwoofer Speaker System - Non Press Paper Cone, 90 dB, 4 Ohm, 50 oz Magnet, 2 Inch