JL Audio CP212-W0v3 BassWedge™ slot-ported enclosure with two 12" W0v3 subwoofers at Crutchfield
JL Audio ACP112LG-TW1 MicroSub+™ single 12" powered subwoofer enclosure at Crutchfield
Amazon.com: Atrend 12JLX3SV JL Audio 12” Single Vented Subwoofer/Speaker Enclosure Compatible with WX & W3 Series Subwoofers. Made in USA : Electronics