Alpine - SWR-1542D 38 cm (15-Zoll) Subwoofer (4Ohm+4Ohm)
Alpine® 15" Black Type S Car Subwoofer | Paradyme
Alpine SWR-1542D Type-R 15" subwoofer with dual 4-ohm voice coils at Crutchfield
Memphis PRXA600.1 Power Reference Series Mono Subwoofer Amplifier and a Alpine S-SB12V Pre-Loaded S-Series 12-inch Subwoofer Enclosure - Creative Audio
Alpine type R 15 inch subwoofer for Sale in Hammonton, NJ - OfferUp
Alpine BBX-T600 Amplifier and CWCS154 CompC 15" Subwoofer Single Voice Coil 4-Ohm - Includes wire kit - Creative Audio
Alpine SWS-15D2 15" Dual 2-Ohm 500W RMS Type-S Car Subwoofer
User manual Alpine SWR-1043D (English - 6 pages)
Amazon.com: Alpine ALP19-R-W12D4 Car Audio Type R Series Sub Dual 4 Ohm 1500W Peak 12" Subwoofer : Electronics
Alpine Type-S SWS-15D2 15" 1500 Watt Dual 2-Ohm Car Subwoofer + Sealed Sub Box | Audio Savings