Polk Audio MM651 UM Boat Speakers

Marine Audio Pro — Fri, 20 Nov 2009 17:44:42 +0000

Polk Audio MM651 UM

For 35 years Polk Audio has been committed to enhancing everyones entertainment in speaker sound, so when Polk Audio decided to build a marine certified speaker; they did it in a way that only Polk Audio knows how: BIG. Polk Audio introduced a very qood quality speaker called the MM651 which was already marine certified, and then they modified it more to build the MM651 UM. UM stands for Ultra Marine. The biggest changes to the MM651 to create the Ultra Marine version is that they used a dome mounted tweater instead of a tweater on tweater post, and they mounted the crossover directly to the back of the magnet. Dome mounted tweaters are more efficient in marine environments because there is no post behind the tweater that could allow water to penetrate the speaker, and the magnet mounted crossover makes the speaker one piece and super easy to install. Bonus is that when mounting these in wakeboard tower speaker cans or enclosures, there is no nead for a crossover shelf to mount the speakers to. Polk Audio MM651 UM are great quality wakeboard tower speakers, and a very attractive price point. Suggested retail is $218.99 per pair.

The marine environment presents a special challenge. Salt water, high humidity, wide temperature range and relentless pounding from the sun take a toll on speakers. Many marine speakers trade on-water durability for sound quality. Not so with the MM651UM- a dedicated Ultra Marine model for your watercraft needs. Designed and styled specifically for use in the marine environment, it isn't just car speaker labeled for use on a boat. Use it in a speaker can or installed on your boat, it works great for both! A unique tweeter-on-grille design eliminates the traditional tweeter post, resulting in a totally sealed front. With waterproof materials, it will stand up to just about any harsh marine environment while sounding great.

Completely Sealed front design prevents water intrusion.
Built-On Grille includes Tweeter Mount which eliminates the traditional tweeter "stalk".
Sealed Crossover Assembly is built Into Back of Magnet means there's no need to find room to hide an extra box.
Stainless Steel Heavy Duty Input Terminals and mounting hardware will not corrode or tarnish.
Passes The Most Rigorous 600 Hours of Salt Fog and UV Testing (ASTM International B117-03 Standard Practice for Operating Salt Spray (Fog) Apparatus and D4329-99 Standard
Dynamic Balance® Driver Technology for pure, distortion free sound.
Neodymium is a rare earth material we use in all MM driver magnets, excluding 461p, that are about 1/10 the weight of a comparable ceramic magnet and much more powerful.
Carbon Composite Basket based on the spokes of a wheel is lightweight and will not flex.
Woven Glass Composite Cones feature tremendous stiffness-to mass ratio. Lower mass means faster transients and finer detail.
Klippel Optimized Components for the best possible performance, even at extreme listening levels.
Marine Certified Polk MM Series speakers are built tough to withstand the toughest environments so they are perfect for use in boats of all types. That's why Correct Craft offers Polk Audio speakers in their award-winning Nautiques ski and wakeboarding boats.
Large-Diameter Voice Coil (30mm) increases reliability and power handling capacity.