Kenwood P-XW1221SHP Single 12" High Power Subwoofer in a Vented Enclosure and includes a X502-1 1000W Max Power eXcelon Series Class D Mono Amplifier - Creative Audio
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 Excelon KFC-XW1241 12" 4-ohm Component CAR Subwoofer 2000W SUB KFCXW1241 | eBay
Kenwood Excelon P-XW1221D Ported 2-ohm enclosure with two 12" subwoofers at Crutchfield
Kenwood Subwoofers in Box - Roller Auctions
Kenwood P-W121B Single KFC-W112S 12" Subwoofer system with Kenwood KAC-5206 Amplifier