Amazon.com: Dual Dls12 Woofer - 175 W Rms - 28 Hz To 125 Hz - 4 Ohm : Electronics
One unit (not pair) |15 Inch Woofer for Bass Compensation of Open Baffle or Cabinet | W-15 - Lii Song (Lii Audio), unique speaker, amplfier, quality and cost-saving parts for HiFi DIY
JBL BASSPRO 8" Single-Voice-Coil Loaded Subwoofer Enclosure with Integrated Amp Black SUBBPSL2AM - Best Buy
Clearance Harbinger VARI V2318S 18" 2,400W Powered Subwoofer | Guitar Center