SeaKing Stores › 10in subwoofer - 4ohm DVC - white - M1D4-10 10in subwoofer - 4ohm DVC - white - M1D4-10 £270.00 10in subwoofer - 4ohm DVC - white - M1D4-10. M1 Color Optix marine subwoofer with 10 in cone, DVC 4Ω / 300 W RMS / 1,200 W peak; White grille. Add To Cart Added! 10in subwoofer - 4ohm DVC - white - M1D4-10. M1 Color Optix marine subwoofer with 10 in cone, DVC 4Ω / 300 W RMS / 1,200 W peak; White grille.