Power Acoustik MOFO Type S Series Subwoofer (12", 2,500 Watts max, Dual 2Ω) in the Mobile Audio department at Lowes.com
Amazon.com: Alpine S-W12D2 Car Audio Type S Dual 2 Ohm 1200 Watt 12" Subwoofers with Sub Install Kit Package : Electronics
Alpine SWS-1223D 12 Type S Series Subwoofer (2? 2? (EA) - video Dailymotion
Alpine SWS-1042D 10" subwoofer with dual 4-ohm voice coils at Crutchfield
Amazon.com: Universal Car Stereo Vented Port Single 12" Alpine S-W12D4 Type S Car Audio Subwoofer Custom Sub Box Enclosure Package New Without Amp : Electronics
Alpine KTE-10G grille for 10" Type-R and Type-S subwoofers
Alpine Type S SWS-12D4 12 Inch 1500 Watt Max 4 Ohm Round Car Audio Subwoofer
ALPINE TYPE S SWS-12D4 12 INCH 1500W 4 OHM ROUND CAR AUDIO SUBWOOFER (SINGLE) | eBay
Universal Car Stereo Hatchback Sealed Dual 10" Alpine Bundle Type S S-W10D2 Sub Box Enclosure with Harmony HA-A800.1 Amplifier & 4GA Amp Kit - Walmart.com
Alpine SBS-S15D4 Type-S 15" Subwoofer Enclosure - Signature Car Sound