Amazon.com: Alpine ALP19-R-W12D4 Car Audio Type R Series Sub Dual 4 Ohm 1500W Peak 12" Subwoofer : Electronics
Alpine SWR-1522D Type-R 15" subwoofer with dual 2-ohm voice coils at Crutchfield
Alpine BBX-T600 Amplifier and CWCS154 CompC 15" Subwoofer Single Voice Coil 4-Ohm - Includes wire kit - Creative Audio
Ported (Recessed) Sub Box Enclosure for 1 15" Alpine Type-R SWR Subwoofer -32 hz | eBay
Need help with Box Dimensions for a Single Sealed Enclosure for an Alpine 15" Type R Subwoofer. Have supplies to build it. Will be in the backseat of an Extended Cab 1994
Amazon.com: Alpine Type S Bundle Compatible with 2005-15 Toyota Tacoma Double Cab Truck S-W10D2 Dual 10" Loaded Sub Box Enclosure with S-A60M Amplifier and 4GA Amp Wiring Kit : Electronics