Polk Ultramarine 7.7" Speakers - Black

The Polk Audio Ultramarine 7.7" Speakers in black deliver powerful, weather-resistant audio performance engineered specifically for marine and outdoor vehicle environments. Rated to handle up to 200 watts, these 7.7-inch marine speakers combine high-temperature voice coil technology with Air Suspension design to produce maximum sound clarity and bass response in conditions where standard automotive speakers would fail. The rugged, removable sport grilles withstand prolonged sun exposure and moisture intrusion without degradation, making them ideal for boats, watercraft, off-road vehicles, and any application requiring reliable audio in harsh marine conditions.

The Air Suspension technology allows the speaker cones to move freely while maintaining structural integrity in fluctuating pressure and temperature environments common to marine and outdoor use. High-temperature voice coils prevent thermal degradation during extended operation in direct sunlight or high-heat engine compartments. Built-in LED lighting in the speaker cone provides visual accent styling while also serving a functional role in low-light marine environments. The 7.7-inch driver size balances frequency response across the audible spectrum while remaining compact enough for most marine speaker mounting locations. At 14.1 lbs, the pair fits standard mounting brackets designed for mid-size marine speakers without requiring reinforced installation hardware.

These speakers serve boat owners, PWC enthusiasts, and off-road vehicle builders who demand durable audio systems that survive salt spray, UV exposure, and temperature swings. The 200-watt capacity allows pairing with quality marine amplifiers for serious sound output without sacrificing reliability. The Ultramarine line is engineered around the reality that moisture, UV, and corrosion are not risks in marine use—they are certainties. Every component, from the cone material to the grille construction, is selected for resistance to these environmental stressors rather than optimized purely for acoustics or cost.