Poly-Planar MA-4054 4" 80 Watt Speakers - Black [MA4054B] Hunting & Fishing When the thumbprint is in

When the thumbprint is in the 12 o'clock position

The sound waves travel more efficiently though the liquid

The highest grade of carnauba to protect all paint surfaces

Whisper quiet

hand assembled

Poly-Planar MA-4054 4" 80 Watt Speakers - Black [MA4054B] Hunting & Fishing When the thumbprint is inMA 4054 4" 80 Watt Speakers Black MA 4054 is a 4" 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