Poly-Planar MA-4054 4" 80 Watt Speakers - Black [MA4054B] Ronstan Boat Show Sale Sheave diameter: 38 mm

Sheave diameter: 38 mm

600 7mm 9/32" 1

Submersible and Ignition Protected: Fully submersible and meets or exceeds ISO 8846 and ISO 8849 standards for safe operation in explosive atmospheres

C/C: 1 5/16" (33mm)

Poly-Planar MA-4054 4" 80 Watt Speakers - Black [MA4054B] Ronstan Boat Show Sale Sheave diameter: 38 mmMA 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