Kenwood KFC-W3011 12" 4-ohm subwoofer at Crutchfield
2 Kenwood KFC-W3013PS 12" 2400W Car Audio Subwoofers + Vented Sub Box Enclosure | Audio Savings
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
Kenwood eXcelon KFC-XW12 Woofer, 400 W RMS, 1200 W PMPO - Walmart.com
Kenwood Excelon KFC-XW800F Shallow-mount 8" 4-ohm subwoofer at Crutchfield
Kenwood KFC-XW1221HP High Performance 12" 2-Ohm Subwoofer and X502-1 Class D Mono Power Amplifier - Creative Audio