Universal Car Stereo Slotted S Port Single 10" Alpine Bundle Type R R-W10D4 Sub Box Enclosure with Harmony HA-A800.1 Amplifier & 4GA Amp Kit - Walmart.com
Alpine S-W10D4 S-Series 10" subwoofer with dual 4-ohm voice coils at Crutchfield
Alpine S-A60M Mono Amplifier and a R-W12D4 R-Series 12" Dual 4 Ohm Subwoofer - Includes wire kit - Creative Audio
793276040107 Alpine R-A75M R-Series Monoblock Subwoofer Amplifier - 750 Watts Rms Power with 0 Gauge Amplifier Kit
Amazon.com: Alpine ALP19-R-W12D2x2wKit Car Audio Type R Dual 2 Ohm 1500 Watt 12" Subwoofers with Sub Install Kit and HA-SWKD Dual Sub Box Install Kit - 16 Screws and Speaker Wire with