SeaKing Stores › 10in sealed-enclosure subwoofer - 4ohm DVC - white - M2D4-10S 10in sealed-enclosure subwoofer - 4ohm DVC - white - M2D4-10S £450.00 10in sealed-enclosure subwoofer - 4ohm DVC - white - M2D4-10S. M2 premium Color Optix marine subwoofer intended for sealed-enclosure installations. 10 in; DVC 4Ω / 400 W RMS / 1,600 W peak; White grille. Add To Cart Added! 10in sealed-enclosure subwoofer - 4ohm DVC - white - M2D4-10S. M2 premium Color Optix marine subwoofer intended for sealed-enclosure installations. 10 in; DVC 4Ω / 400 W RMS / 1,600 W peak; White grille.