Boss - Audio MRG10W 10" Marine 800W Subwoofer with Multicolor Lighting - White - MRGB10W. Fully Marinized. Fully Marinized is the term we use for our Marine and Outdoor products that are Weather Proof. We integrate high-tech, state-of-the-art waterproofing materials plus special UV coatings for plastic surfaces, coated circuit boards and connections to protect the product against the harsh outdoor elements and resist corrosion.. Ported Enclosure. This subwoofer will thrive in well in a ported en