Factory Audio Upgrade
Ultra-Marine Certification
UV-Tolerant
Multiple Configurations
50 Year Heritage
Engineered in Baltimore
10 Products
10 Products
Ultra-marine certification
MM1 speakers sport non-corrosive aluminum grilles, fiberglass reinforced ABS baskets, epoxy coated crossovers, waterproof surrounds, proper drainage and titanium-plated cones for an Ultra-Marine Certified IP56 rating that’s been salt-fog, UV, and humidity tested.