Alpine S-W12D4 12" 600W RMS Dual 4-Ohm S-Series Series Subwoofer
Alpine Next Generation S-Series 12" Dual-Voice Coil 4-Ohm Subwoofer Black S2-W12D4 - Best Buy
Alpine SWS12D2 12 inch 1000W DVC 2Ohm Subwoofer - Walmart.com
Alpine S-W10D4 10" Subwoofer S-series w / Dual 4-Ohm Voice Coils — Automotive Sound and Protection
Alpine SWS-1242D 12" subwoofer with dual 4-ohm voice coils at Crutchfield
Alpine S-W8D2 at Onlinecarstereo.com
Alpine Jeep Wrangler Single 12-Inch Alpine Halo S-Series Preloaded Subwoofer Enclosure with ProLink S-SB12V (Universal; Some Adaptation May Be Required) - Free Shipping
User manual Alpine S-W10D4 (English - 1 pages)
Car Speaker Alpine S12 for Sale in Eleven Mile, AZ - OfferUp
Alpine Pair of S-W12D2 12 Inch S-Series Subwoofers with Dual 2-Ohm Voice Coils
Alpine S-SB12V 12" 600 Watt Subwoofer+Ported Sub Box+Portable Bluetooth Speaker - Rockville Audio