This entry-level XED 4ohm SVC Subwoofer (10-In., 800 Watts) from Cerwin-Vega Mobile is the perfect upgrade to your stock system when you are looking for some low-end bass to complement the rest of your sound system. Constructed with a parabolic polypropylene cone and utilizing a unique foam-blend high roll surround for accurate bass reproduction, count on this subwoofer to perform all day long!