Upgrade your Car, Boat, Motorcycle, or ATV’s factory speaker set with the DB+ Series to get that legendary Polk sound wherever life takes you. You’ll get loud, crystal clear sound with effortless bass from a marine certified speaker that’s easy to install and built to last.High Performance Factory A..
The Premium Upgrade—tuned to provide the unparalleled sonic accuracy you’ll find in studio monitor speakers, but in a durable, ultra-marine certified design, Polk’s MM1 Series mobilizes high-quality sound for an on-the-go audio upgrade that’s way beyond anything you’ll experience from the stock fact..