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Marine Certified
Marine Certified means your db loudspeakers will perform reliably on the water as well as they do on land. So we attacked every db speaker with a series of punishing real world and accelerated weathering lab tests to see if they could take what some pretty nasty marine and automotive environments could dish out. We exposed dbs to hundreds of hours of salt fog, intense ultraviolet light and extreme temperatures from -40° to 185° F (-40° to 85° C). They performed as well after the tests as before (they didn't look so good). No wonder Correct Craft® builds Polk Audio speakers into their award-winning Nautiques® ski and wakeboarding boats, and Bullet® uses Polk db speakers in their marine "tower" speaker enclosures.