45KMF104 [Used]

The Kicker 45KMF104 is a 10-inch free-air marine subwoofer built to add deep bass to a boat without a dedicated enclosure. Its four-ohm voice coil, injection-molded polypropylene cone, and co-molded Santoprene surround handle 350W peak and 175W RMS power, and a UniPlate back plate with a large ceramic magnet keeps output consistent. The polymer basket resists corrosion, the terminal cap protects the connections from spray, and stainless mounting hardware and a rear gasket are included for a clean, secure install. Built specifically for marine use, the subwoofer meets ASTM standards for UV and salt/fog exposure, so it holds up to sun and water season after season. A 5-inch mounting depth and 9.19-inch hole diameter make it a straightforward swap into most existing free-air locations, giving a boat noticeably more low end without reworking the cabin or deck.