JBL SRX828SP 2000W Dual 18 inch Powered 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.
Amazon.com: JBL Professional SRX828SP Portable Dual Self-Powered Subwoofer System, 18-Inch, Black : Everything Else