Polk Audio Ultramarine 8.8" Coaxial Speakers - Silver UMS88SR. 8" Coaxial Speakers brings your music to life on the water These speakers by Polk Audio utilize air suspension technology to deliver a powerful 250 watts of power. The Polk Audio......

Polk Audio Ultramarine 6.6" Coaxial Speakers - Silver UMS66SR. 6" Coaxial Speakers - WhiteThe Polk UMS66W speaker uses air suspension technology to deliver 150 watts of power in a sleek waterproof and UV/corrosion resistant package perfect for life......