JBL SRX828SP 2000 Watt Powered dual 18" subwoofer featuring Crown Amplification - Big Dude's Music City
JBL SRX828SP | 18" Dual Self-Powered Subwoofer System
JBL STX818S | 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.