Amazon.com: JBL 12" Dual 4ohm DVC Car Subwoofer : Electronics
JBL Single 12" Car Audio Subwoofer Sealed Enclosure
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 Club WS1200 - 12” Shallow mount subwoofer w/SSI™ (Selectable Smart Impedance) switch from 2 to 4 ohm : Electronics
JBL Single 12" Car Audio Subwoofer Sealed Enclosure
Amazon.com: JBL SUBBP12AM - 12” amplified 12” Subwoofer with Sub Level Control (Renewed) : Electronics
Amazon.com: JBL Professional ASB6112-WH Ultra Compact High-Power 12-Inch Subwoofer, White : Everything Else