6x9" Three Way Speakers with Ultra-Marine Certification
Enjoy a rich, clean, full-range sound with our patented Dynamic Balance technology engineered into every MM1 speaker. Rigorously tested and developed by our talented Polk Audio engineers, whose passion rests in the principles of great sound, Dynamic Balance technology features non-resonant materials so you get extremely clear highs, mids and lows no matter what you’re listening to.
Ultra-marine certified (IP56 rated)
Dirt & water-resistant & tested for salt-fog, UV & humidity
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.
1” Terylene Tweeter
Our newly designed Terylene dome tweeter features curvilinear formers that extend response and lower resonance for better dispersion in the critical midrange, delivering clear and detailed high frequency response for realistic reproduction of vocals and instruments.
Waterproof Santoprene Surrounds
This attractive high performance material maximizes throw with its ultra-flexible, ultra-durable properties—and prevents the elements from entering the speaker unit. Plus, it combats the harsh effects of boat 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.
Waterproof Santoprene Surrounds
This attractive high performance material maximizes throw with its
ultra-flexible, ultra-durable properties—and prevents the elements from entering
the speaker unit. Plus, it combats the harsh effects of boat cleaning agents.
With its second order high/low pass system, you’re ensured the right frequencies reach the right speakers in your setup for optimal system blending regardless of the vehicle you’re in or the elements you encounter.
Key Technologies
A non-corrosive fiberglass reinforced ABS basket, water-proof surround, weep holes for proper drainage and a polypropylene cone offer long-lasting protection that’s salt-fog and UV tested.
Proudly engineered and designed in Baltimore, Maryland, Polk products are crafted to meet high standards of quality, performance, and reliability, ensuring a premium audio experience that is the pinnacle of American Hi-Fi.
Polk’s exclusive lightweight Dynamic Balance® Polypropylene Cones deliver spectacular midrange clarity, punchy bass and high efficiency.
A non-corrosive fiberglass reinforced ABS basket, water-proof surround, weep holes for proper drainage and a polypropylene cone offer long-lasting protection that’s salt-fog and UV tested.
Proudly engineered and designed in Baltimore, Maryland, Polk products are crafted to meet high standards of quality, performance, and reliability, ensuring a premium audio experience that is the pinnacle of American Hi-Fi.
Polk’s exclusive lightweight Dynamic Balance® Polypropylene Cones deliver spectacular midrange clarity, punchy bass and high efficiency.
Compare Polk Car & Marine Speakers
This Product
MM692
6x9" Three Way Speakers with Ultra-Marine Certification
A non-corrosive fiberglass reinforced ABS basket, water-proof surround, weep holes for proper drainage and a polypropylene cone offer long-lasting protection that’s salt-fog and UV tested.
Proudly engineered and designed in Baltimore, Maryland, Polk products are crafted to meet high standards of quality, performance, and reliability, ensuring a premium audio experience that is the pinnacle of American Hi-Fi.
Polk’s exclusive lightweight Dynamic Balance® Polypropylene Cones deliver spectacular midrange clarity, punchy bass and high efficiency.
