Jensen MXA6BA 200 Watt Subwoofer - 6" Amplified Marine Powered Subwoofer Unlike other manufacturers, the MXA6BA, as with other JENSEN audio and video equipment, is specifically designed, built, and tested to withstand vibrations, humidity, salt air, temperature fluctuations, moisture, and UV exposure. With features such as conformal coated circuit boards and a water resistant housing (IPx5), boaters can experience the full and rich sounds of this unit inside or out. Let your audio entertainment exceed your expectations by outfitting your boats with the JENSEN® Marine MXA6BA 6" Water Resistant Amplified Marine Subwoofer!