Disassembly of an Alpine Type-X SWX-1243D (will post more as I get deeper) : r/CarAV
Alpine SWX-1243D Type X 12" & Kicker DX1000.1 1000W RMSClass D Mono Car for Sale in Los Angeles, CA - OfferUp
Best Buy: Alpine 12" 1000 W Woofer SWX-1243D
Alpine SWX-1042D at Onlinecarstereo.com
Custom Sub Enclosure | Affordable Sub Box
Amazon.com: Alpine Bundle Compatible with Universal Car X-W12D4 Type X 12" Loaded SPL Bass Subwoofer Labyrinth Vent Sub Box Stereo Enclosure : Electronics
Alpine SWX 1243D Type X 12 subwoofer XMAX Ripping apart my car Crazy Bass - YouTube
Amazon.com: Alpine (2) X-W10D4 Car Audio Type X Series Sub 1800W Peak 10" Subwoofer Bundle with Harmony HA-A1500.1 Amplifier & Amp Kit : Electronics