Poly-Planar MA-4055 5" 60 Watt Speakers - White [MA4055W]MA 4055 5" 60 Watt Speakers White MA 4055 is a 5" cone size two way coaxial speaker. This speaker featured a rugged waterproof design, Teflon coated wires, plastic grills, polypropylene cones, mylar tweeters and plastic frames, to provide years of trouble free service. Ultra low magnetic field speakers eliminates the problem of speakers magnets affecting navigation equipment such as compasses and autopilots. Features: Ultra low magnetic field speaker