Kenwood P-XW1221DHP Dual 12" High Power Excelon Subwoofers in a Vented Enclosure and includes a KAC-9106D 2000 Max Power Class D Mono Amplifier - Creative Audio
Amazon.com: Pair of Kenwood KFC-W3041 12" 4 Ohm 2000W Car Subwoofer (2 Pieces) with Gravity Magnet Phone Holder Bundle : Electronics
Kenwood KFC-W3005 12" 4-ohm Component Subwoofer at Crutchfield