Marine Subwoofers

10" Subwoofer Ultramarine - SilverPolk's marine subwoofers have always been known for intelligent design, impressive sound, and weather resistance. The UMS108 sub continues this tradition with solid construction that stands up to the elements.The UMS108...

8" JMPSW800 Subwoofer - 200WWater resistant amplified subwoofer reproduces and projects low-pitch audio frequencies.  Ported aluminum enclosure withstands the elements and enhances the low frequency output and rich sound quality of your stereo...