Old School JL Audio 12W0-12 12” SVC Subwoofer, Hard to fine | eBay
JL Audio ACP108LG-W3V3Mickey Shorr | Michigan's Largest Mobile Electronics Retailer
Amazon.com: Atrend 12JLX3SV JL Audio 12” Single Vented Subwoofer/Speaker Enclosure Compatible with WX & W3 Series Subwoofers. Made in USA : Electronics