The Kicker 45KMF124 is a 12 inch marine free-air subwoofer with a 4 ohm single voice coil. It features an injection-molded polypropylene cone, co-molded Santoprene surround, UniPlate back plate and pole piece, thick tinsel leads, a large ceramic magnet, and a corrosion-resistant polymer basket designed for marine exposure.

Designed for free-air marine mounting on boats and watercraft, sealed and vented enclosure specifications are not applicable. Recommended amplifier power is 175 watts RMS with 350 watts peak per ANSI/CTA-2031-A. Frequency response is 30-500 Hz. Mounting depth is 5.5 in (13.9 cm), cutout diameter 11 in (27.9 cm), outer diameter 13 in (32.95 cm). Includes back gasket, eight mounting screws and clips, protective terminal cap, stainless mounting hardware, manual, and a three year limited warranty when purchased from an authorized dealer.