Polk Audio DB1242DVC User Guide 2 - Page 2

IP56 rating (water- and dirt-resistant) Waterproof rubber surrounds keep the elements out UV tolerant composite cone Tested for salt-fog, UV and humidity Polk's rich, deep bass gets an on-the-go overhaul with the marine-tough, yet ruggedly sophisticated, DB+ subwoofers. With a space-saving design you get thunderous sonic output that fits in nearly any vehicle. Features Rich Deep Bass, On the Go Delivers thunderous sonic output and powerful low frequency response whenever... that will get your heart pumping. Marine Certified Built to last for cars, boats and ATVs with an IP56 rating and tested for Salt-fog, UV & Humidity. Space Saving Design Slimmed down form factor reduces the need for oversized subwoofer enclosures for a look that goes virtually unnoticed- but a sound that doesn't. Dynamic Balance Technology Patented process that guides material selection through rigorous testing that identifies and cancels out unwanted resonant frequencies.