Dynamic Balance: Dynamic Balance is a proprietary Polk Audio
technology using laser imaging to determine what combination of speaker
materials create the least amount of resonance. Eliminating resonance in
speakers results in a wide, smooth response and low distortion.
Klippel Optimized Components: Using a state-of-the-art Klippel
Distortion Analyzer, 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 3.5" woofer 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 speakers feature 3/4"
liquid-cooled silk/polymer composite soft-dome tweeters for clearer, more
Large Diameter Voice Coils: Large diameter, 30mm
voice coils increase the speaker's reliability and power handling capacity.
2-way Crossover Network: The built-in 2-way crossover network sends
the appropriate frequencies to each driver for cleaner sound and better imaging.
Carbon Composite Basket:
The speaker's carbon composite plate and basket is lightweight and will
not flex during music audio peaks.
Mounting: The speakers can be top-mounted in a metric
4"x6" opening, or top-mounted in a U.S. standard 4"x6"
Marine Certified Woofer: Polk MM Series speakers are built to
withstand exposure to moisture and UV rays, so they work well in boats and cars.
They also include stainless mounting hardware for corrosion and rust resistance
Speaker Terminals: These speakers have 0.25" positive (+)
terminals and 0.187" negative (-) terminals, which are too large for the
vehicle-specific speaker harnesses supplied by Crutchfield for many vehicle
applications. It is recommended that a pack of assorted female quick slides
(item # 120FQS10PK) be purchased and spliced to the harnesses to adapt them to the
Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.