Discover Polk Audio MM522 5.25" Coaxial Speakers with Ultra-Marine Certification

By: Polk Audio

Model: 112436-01-00-305

Sku: 8W0SX1CM6V

$242.99

Availability: In Stock In Stock

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  • Driver Enclosure Type: Ultra-Marine Certified
  • Driver Complement: (1) 5.25" (13.34 cm) d (Round) Dynamic Balance Driver - Mid/Woofer, (1) 1" (2.54 cm) d (Round) Pivoting Terylene Tweeter - Tweeter
  • Shape: Round
  • Total Frequency Response: 50 Hz → 40 Hz
  • Nominal Impedance: 4 ohms
  • Max Sensitivity (1 watt @ 1 meter): 92 dB
  • Type: 1st Order (Woofer) 2nd Order (Tweeter) at 5.0 kHz
  • Peak Power Handling: 300 watts
  • Power Handling (per channel): 100 watts → 300 watts
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The Premium Upgrade—tuned to provide the unparalleled sonic accuracy you’ll find in studio monitor speakers, but in a durable, ultra-marine certified design, Polk’s MM1 Series mobilizes high-quality sound for an on-the-go audio upgrade that’s way beyond anything you’ll experience from the stock factory set up in your car, boat, motorcycle or ATV.

  • Ultra-marine certified (IP56 rated)
  • Dirt & water-resistant & tested for salt-fog, UV & humidity
  • Used in Automobile, Boats & ATVs
  • 5.25" Dynamic Balance® polypropylene woofers
  • 1" Terylene Dome tweeters

Designed to perform

Every element of the MM Series is meticulously engineered for high-performance sound. Dynamic Balance technology, a pivoting 1” terylene tweeter, lightweight neodymium motor structure, high-temp Conex spiders and oversized voice coils for increased power handling are brought together with 2nd order high & low pass crossovers for optimum system blending—in short, your vehicle might just become your favorite listening environment.

Ultra-Marine Certified

MM1 Series have earned an Ultra-Marine Certified IP56 rating with their non-corrosive aluminum grilles and fiberglass reinforced ABS baskets, epoxy coated crossovers, water-proof inner and outer surrounds, weep holes for proper drainage and titanium-plated cones—that’s all been salt-fog, UV, and humidity tested. With MM1 Series, you get extra, long-lasting protection against virtually anything mother nature can dish out.

Designed To Go The Extra Mile

All Polk loudspeakers rely on our patented process to eliminate electro-acoustic and mechanical issues before they become a part of the finished speaker and are also rigorously tested through Polk’s Klippel distortion analyzers. MM1 Series, in addition to their IP56 waterproof rating and Ultra-Marine Certification feature Santoprene S Roll inner and outer surrounds to eliminate water, dirt and dust from entering the speaker housing. maximize throw, and withstand abuse from marine cleaning agents.

Advanced High-Performance Sound

Every element of the MM1 Series is meticulously engineered for high-performance sound—Dynamic Balance technology, a pivoting 1” Terylene tweeter, UV tolerant titanium plated composite cones, lightweight neodymium motor structure—plus, glass fiber formers, oversized voice coils and high-temp Conex spiders for increased power handling.

UV Tolerant Titanium Plated Composite Cones

Provides tighter, cleaner, more accurate sonic dispersion—and won’t discolor or degrade with time and heavy use.

In the Box

  • Polk Audio MM522 5.25" Coaxial Speakers with Ultra-Marine Certification