JL Audio 12W0v2-4 W0v2 Series 12" 4-ohm subwoofer at Crutchfield
JL Audio 12WXv2 WXv2 Series 12" 4-ohm subwoofer at Crutchfield
Amazon.com: Atrend 12JLX3SV JL Audio 12” Single Vented Subwoofer/Speaker Enclosure Compatible with WX & W3 Series Subwoofers. Made in USA : Electronics