Amazon.com: Alpine Type S Bundle Compatible with Universal Car S-W12D4 Single 12" Slotted S Port Loaded Sub Box Enclosure - Final 2 Ohm : Electronics
Amazon.com: Alpine (2) S-W12D2 Car Audio Type S Series Sub 1200W Peak 12" Subwoofer Bundle with Harmony HA-A800.1 Amplifier & Amp Kit : Electronics
Alpine SWS-1242D 12" subwoofer with dual 4-ohm voice coils at Crutchfield
Universal Fit Alpine S-W12D2 Type S Triple 12" Subwoofer Loaded Sub Box New | eBay
Alpine SWS-1241 12" Subwoofer at Crutchfield
2 Alpine Type-S SWS-12D4 12 3000w Car Subwoofers+Vented Sub Box Enclosure SWS12 | Audio Savings
Alpine Type-S 12" DVC Subwoofer Destruction | Time of Death - 4 Seconds!!!! Alpine Type-S 12" Subwoofer. Dual 2Ohm, wired to 1Ohm impedance In a ported enclosure.... run at 50Hz at a