Hertz HMS 10 S4-LD-SW.1 marine subwoofer is designed to be installed without the need for a dedicated enclosure delivering powerful and precise bass in any vessel.  Sport white grille, featuring built-in LEDs, can be easily removed to be painted with the perfect color for your vessel. HMS subwoofers are designed to be installed without the need for a dedicated enclosure delivering powerful and precise bass in any vessel. The motor and suspension design is optimized for high-power, infinite-baffle operation featuring long linear excursion capability for tremendous output with low distortion.