Polk DB402 4" Coaxial Speakers with Marine Certification

Polk DB402 4" Coaxial Speakers with Marine Certification Perfect for anything: Cars, Trucks, Boats ATVs & More. Everything you love about Polk’s Dynamic Balance technology—that rich, clean, full-range sound—is built into the marine-tough, yet ruggedly sophisticated, DB+ series. And with its universal fit, it can be installed in any vehicle: Automobiles, motorcycles, boats, ATVs—you name it. Specifications: • Driver Enclosure Type - Marine Certified • Cut Out Shape - Circle • Cut Out Diameter - 4.09" (10.39 cm) • Full-Range Mounting Depth - Top Mount 1.79" (4.55 cm) • Total Frequency Response - 60 Hz → 22 kHz • Nominal Impedance - 4 ohms • Sensitivity (1 watt @ 1 meter) - 90 dB • Continuous Power Handling (RMS) - 45W • Peak Power Handling - 135W High Performance Upgrade - Upgrade from your OEM speaker system toward a bigger, fuller, high-performance sound. Marine Certification - The DB+ Series is IP55 rated so it’s dirt- & water- resistant. It also has been tested for salt-fog, UV and humidity. Polypropylene UV Tolerant Cone - Enjoy the peace of mind knowing each speaker cone is built to last, whose clean and polished look won’t discolor or degrade over time. Waterproof Inner and Outer Surrounds - Completely blocks dirt, liquid and grime from entering the speaker housing. Universal Fit - Enjoy a simple drop in installation for any vehicle including cars, boats, ATV’s -- you name it. This quick and easy experience also ensures a faster installation process so you can get back to what matters with our great sound always along for the ride. Zero Tweeter Protrusion - Each speaker in the DB+ Series features a shallow tweeter design to ensure your factory speaker grille re-installs with ease for a flush, seamless look.