Polk Audio UMS108B Ultramarine 10.8" Marine Subwoofer with RGB LED Lighting Black

Polk Audio

<h3>Polk Audio: Five Decades of High-Performance Sound</h3><p><strong>Polk Audio</strong> was born in 1972 when three audiophiles with a shared passion for great sound set out to build loudspeakers that anyone could afford. The brand's roots trace back to 1972, when the acclaimed speaker manufacturer got its start in Baltimore, Maryland. What began as a garage operation driven by pure acoustic ambition has grown into one of the most recognized names in consumer audio — and that founding philosophy has never wavered.</p><p>Fifty years, hundreds of thousands of speakers, and countless awards later, Polk remains focused on its mission of giving listeners the absolute best sound for their money. That commitment to value and performance is what has made Polk a go-to choice for home theater enthusiasts, car audio fans, and boaters alike.</p><h3>From Living Rooms to Open Roads and Open Water</h3><p>While Polk built its early reputation on home loudspeakers, the brand has long recognized that great audio shouldn't stop at the front door. Polk entered the world of automotive audio in 1999, partnering with legendary Italian design firm MOMO to develop streamlined high-fidelity sound systems for cars. Custom-install and marine sound systems would soon follow. Today, Polk's mobile audio lineup spans cars, motorcycles, boats, and ATVs — all built to the same exacting standards as the brand's home speakers.</p><p>At the heart of Polk's vehicle audio range is the acclaimed DB+ Series. Car audio enthusiasts love the DB+ Series for the rich, clean, full-range sound they provide automobiles, motorcycles, boats, and ATVs — built marine tough and designed for a universal fit. For more demanding marine environments, Polk's MM1 Series steps up the protection: the MM1 Series has earned an Ultra-Marine Certified IP56 rating, featuring non-corrosive aluminum grilles, fiberglass-reinforced ABS baskets, epoxy-coated crossovers, waterproof surrounds, and titanium-plated cones — all salt-fog, UV, and humidity tested.</p><h3>Engineering That Goes Beyond the Speaker</h3><p>Polk's quality control process is as rigorous as its designs. Polk speakers are engineered to catch distortion, vibration, and mechanical issues before they reach your system, with Klippel testing and proven design processes that help keep the sound clean when the ride gets loud. This attention to detail extends across every product category — from the speakers themselves to the <a href="/201017-stereoelectronic-accessories-polk-audio-11551">stereo and electronic accessories</a> that make installation clean and straightforward, and the broader range of <a href="/11551-polk-audio-electronics-parts-accessories-200363">electronics parts and accessories</a> that complete a premium mobile audio setup.</p><p>Later Polk speaker models used arrays of drivers — the Stereo Dimensional Array (SDA) — to cancel crosstalk between channels, expanding the stereo image beyond the physical space between two speakers. This patented technology, originally developed for home audio, reflects the kind of genuine innovation that has kept Polk relevant for over half a century.</p><h3>Why Polk Audio Stands Apart</h3><ul style="list-style:disc"><li><strong>50+ years of acoustic engineering</strong> with roots in high-fidelity home audio</li><li><strong>Marine-certified product lines</strong> including IP56-rated speakers for harsh environments</li><li><strong>Patented SDA technology</strong> for a wider, more immersive stereo soundstage</li><li><strong>Klippel distortion testing</strong> on every speaker to ensure clean, accurate sound</li><li><strong>Universal-fit designs</strong> that simplify installation in cars, boats, and powersports vehicles</li></ul><p>Whether you're upgrading a factory head unit, outfitting a center console boat, or simply adding better sound to a daily driver, Polk Audio delivers an experience that punches well above its price point.</p>