Amazon.com: Alpine Bundle Compatible with Universal Car S-W12D2 Type S Dual 12" Custom Loaded Vented Sub Box Enclosure : Electronics
Alpine SWR-1222D Type-R 12" subwoofer with dual 2-ohm voice coils at Crutchfield
Alpine Halo R2-Series Dual 12" Voice Coil 4-Ohm Loaded Subwoofer Enclosure Black R2-SB12V - Best Buy
LAB SlapBox™ 2.00 ft^3 Ported MDF Enclosure Box for Single Alpine 12" S-
Alpine SWR-1242D Type-R 12" subwoofer with dual 4-ohm voice coils at Crutchfield
Alpine 12" Subwoofer S-series w / Dual 4-Ohm Voice Coils
Alpine SWS12D2 12 inch 1000W DVC 2Ohm Subwoofer - Walmart.com
Alpine SWR-T12 - 12" Subwoofer | Pacific Stereo
Alpine Jeep Gladiator Single 12-Inch Alpine Halo S-Series Preloaded Subwoofer Enclosure with ProLink S-SB12V (Universal; Some Adaptation May Be Required) - Free Shipping