Sky High Car Audio FMX Series 8" Subwoofer – 800W RMS D1/D2Sky High Car Audio FMX Series 8" Subwoofer 800W RMS D1 D2Sold by AudioSellerz. com The Sky High Car Audio FMX Series 8" Subwoofer packs true subwoofer performance into a compact 8 inch frameperfect for builds where space is tight but output still needs to hit hard. Part of the FMX Forged to Perform. Built to Endure. lineup, this 8 inch sub is engineered with an overbuilt motor, rugged suspension, and high thermal capacity so it can handle real world