Amazon.com: CELESTION FTR184080FD FTR Series 18-Inch 1000-Watt Subwoofer, Black : Musical Instruments
One unit (not pair) |18 Inch Woofer for Bass Compensation of Open Baffle or Cabinet | W-18 - Lii Song (Lii Audio), unique speaker, amplfier, quality and cost-saving parts for HiFi DIY