Alpine Type X SWX-10 10" Sub and Port Back Subwoofer Box Plans | CustomLowz
Alpine Car Subwoofer Type-X | 2015
Best Buy: Alpine X-Series 10" Dual-Voice-Coil 4-Ohm Subwoofer Black X-W10D4
Amazon.com: Alpine X-W10D4 Car Audio Type X Dual 4 Ohm 1800 Watt 10" Subwoofers with Sub Install Kit Package : Electronics
Amazon.com: Alpine Bundle Compatible with Universal Car X-W12D4 Type X 12" Loaded SPL Bass Subwoofer Labyrinth Vent Sub Box Stereo Enclosure : Electronics
LAB SlapBox™ 2.00 ft^3 Ported MDF Enclosure Box for Single Alpine 12" X-Series Subwoofer
Amazon.com: Alpine X-W10D4 Car Audio Type X Dual 4 Ohm 1800 Watt 10" Subwoofers with Sub Install Kit Package : Electronics