Includes a JBL S2-1224SS Series II 12 Inch Subwoofer & Slipstream Ported Enclosure with SSi Selectable Impedance - 2 or 4 Ohm, JBL STAGEA3001 Stage Series 250 Watt Car Audio Mono Subwoofer ...

JBL speakers have to undergo a rigid testing process that would destroy lesser speakers. JBL freezes them, bakes them, shakes them, blasts them with ultraviolet light and drives them at full power ...