Marine Certified: This Polk MM Series speaker is
built to withstand exposure to moisture, salt water, high humidity, UV rays, and
a wide temperature range so they work well in a marine environment; such as a
boat. The speaker has passed rigorous hours of salt fog and UV testing. The
speaker also features a completely sealed front design to prevent water
intrusion. In addition, they include stainless mounting hardware for corrosion
and rust resistance.
Klippel Optimized Components: Using a state-of-the-art
Klippel Distortion Analysis, Polk engineers were able to optimize the woofer's
motor structure, voice coil alignment and suspension for the best possible
performance, even at extreme listening levels.
Woofer Cones: Woven glass composite cones feature tremendous
stiffness-to-mass ratio. Lower mass means faster transients and finer detail.
Butyl Rubber Surrounds: For a smoother response and improved
durability, the woofers use butyl rubber surrounds. The airtight rubber
surrounds stand up to moisture, sunlight and extreme temperatures while allowing
long excursion linear motion and years of reliable use.
Silk/Polymer Composite Tweeters: The 1" liquid-cooled,
silk/polymer composite tweeters provide clear, detailed highs.
Neodymium Magnets: The speaker's neodymium magnets offer
exceptional strength to performance ratio and is extremely lightweight.
Large Diameter Voice Coils: Large diameter, 30mm voice coils
increase the speaker's reliability and power handling capacity.
Carbon Composite Basket: The speaker's carbon composite
basket is lightweight and will not flex during music audio peaks.
Built-In Crossovers: A sealed crossover assembly is built into
the back of the speaker cover; no need to find room to hide an extra box.
Built-On Grilles: The speaker's built-on grille includes the tweeter
mount which eliminates the traditional tweeter stalk.
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