RCF L18P400 18" 2000W Sub-Woofer For Professional bass reflex & bass-horn system 844632090233 | eBay
RCF SUB-8006AS Dual 18″ Active High Power Subwoofer – Sonic Circus
Rcf LF18N451 18-in Very High Power Handling And Efficiency Transducer Specially Designed To Provide Powerful And Accurate Sub-bass Frequencies With Low Distortion And Low Power Compression. - Walmart.com