MA-4054 4″ 80 Watt Speakers – Black MA-4054 is a 4″ cone size two-way coaxial speaker. Â This speaker featured a rugged waterproof design, Teflon coated wires, plastic grills, polypropylene cones,…Continue readingPoly-Planar MA-4054 4″ 80 Watt Speakers – Black [MA4054B]