Whether you dock your boat at a lakeside marina or a spot right off the ocean, your vessel is a getaway from the everyday. But what's an escape without a summer theme song? JBL's MS Series Marine Speakers maximize your offshore adventures by letting you hear your song the way it was meant to be heard. With the high performing, patented Plus One midwoofers, balanced dome tweeters and single-piece polymer basket, the MS9520 speakers are built not only to jam, but to last. JBL builds these speakers to sound great across the product line, rather than tuning for one speaker and calling it a day. Speakers are different sizes, so one size doesn't fit all. Each speaker sounds perfect, just like your next day on the water.