Hertz Marine HMX 6.5 6-1/2" 2-way marine speakersHigh performance sound Hertz designed their HMX 6. 5 6 1 2 marine speakers to bring high quality audio to any boat. These rugged speakers will handle up to 75 watts RMS, so they'll be able to cut through the noise from your engine and the wind. They're made for max volume, with big magnets, polypropylene cones, and acoustic lens tweeters that are optimized for off axis dispersion. Built to last The speaker basket and grille are made from a rugged, UV