SeaKing Stores › 12in infinite-baffle subwoofer - 2ohm DVC - black - M2D2-12IB 12in infinite-baffle subwoofer - 2ohm DVC - black - M2D2-12IB £495.00 12in infinite-baffle subwoofer - 2ohm DVC - black - M2D2-12IB. M2 premium Color Optix marine subwoofer for infinite-baffle mounting. 12 in; DVC 2Ω / 400 W RMS / 1,600 W peak; Black grille. Add To Cart Added! 12in infinite-baffle subwoofer - 2ohm DVC - black - M2D2-12IB. M2 premium Color Optix marine subwoofer for infinite-baffle mounting. 12 in; DVC 2Ω / 400 W RMS / 1,600 W peak; Black grille.