JBL Car Subwoofer - Black + amp 6925281927409 | eBay
JBL EON718S 1500-watt 18-inch Powered PA Subwoofer | Sweetwater
Amazon.com: EMB Professional 12" 1200W SB-12 Replacement Speaker for JBL, Peavey, Cerwin Vega, Gemini, EMB, BMB, Pyle-Pro, Mr.DJ & Many Brands! Protects the woofer and speaker in open installations.