Take your car, boat, or ATV to new sonic depths with Polk DB+ Series Subwoofers. You’ll get Polk’s thunderous, crystal clear and effortless bass from a marine certified subwoofer with a space saving design that’s easy to install and built to last.
Marine certified (IP56 rated)
Dirt & water-resistant & tested for salt-fog, UV & humidity
Audio enthusiasts love Polk’s DB+ Series Subwoofers for the rich, clean, and deep low frequency response they provide cars, boats, and ATVs. Built marine tough with a space saving design, DB+ Series Subwoofers add thunderous bass to your ride—wherever life takes you: the road, the trail, the waves—you name it.
Marine Certified
DB+ Series Subwoofers are IP56 rated so they are dirt- and water-resistant. They also have been tested for salt-fog, UV and humidity. A big part of that marine certification also means that each subwoofer has a UV tolerant cone, waterproof surrounds, and stainless steel mounting hardware, ensuring that they are fully protected against the elements
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. DB+ Series, in addition to their IP56 waterproof rating and Marine Certification feature waterproof surrounds that completely block dirt, liquid, and grime from entering the speaker housing—all designed to maximize longevity of the speaker.
Solid Polk Sound
The Stealth Sub
Our DB+ Series Subwoofers utilize our patented Dynamic Balance
Technology to combine Polypropylene woofers, non-resonant materials,
and exceptional power handling for crystal clear sound with deep,
effortless bass. Their slimmed down form factor reduces the need for
oversized subwoofer enclosures. You get a look that goes virtually
unnoticed—but a sound that doesn’t.
Key Technologies
The DB Plus Speaker Series are Marine Certified to push the limits of durability, so you can take them anywhere. The speakers feature an IP56 waterproof rating and are tested for salt-fog, UV and humidity.
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.
The DB Plus Speaker Series are Marine Certified to push the limits of durability, so you can take them anywhere. The speakers feature an IP56 waterproof rating and are tested for salt-fog, UV and humidity.
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.
The DB Plus Speaker Series are Marine Certified to push the limits of durability, so you can take them anywhere. The speakers feature an IP56 waterproof rating and are tested for salt-fog, UV and humidity.
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.
