Amazon.com: Kenwood KFC-W120SVC Road Series 12" Passive Car Subwoofer - 1000W, 36Hz-300Hz Frequency Range, 4-Ohm Impedance, Polypropylene Woofer Cone, Deep, Powerful Bass : Electronics
Kenwood KFC-W120SVC Road Series 12" Single-Voice-Coil 4-Ohm Subwoofer - Black 696552407215 | eBay
Kenwood Excelon KFC-XW1241 12" 4-ohm Component CAR Subwoofer 2000W SUB KFCXW1241 | eBay
2) Kenwood KFC-W12PS 12" 2000w Car Audio Subwoofers+Sealed Sub Box Enclosure - Walmart.com
Kenwood P-XW1221D Dual 12" Excelon Subwoofers in a Vented Enclosure and includes a XR601-1 Reference Series 1200 W Max Power Mono Amplifier - Creative Audio
Kenwood KFC-W12PS 12" 2000W Car Subwoofers KFCW12PS + Dual Sealed Sub Box - Walmart.com