Built to bring the big surround sound theater experience into the comfort of your living room, the Polk Signature Series continues in the Polk tradition of American HiFi. Featuring Hi-Res certification, Dynamic Balance driver design, Terylene tweeters, mica-reinforced polypropylene cones, precision cross-overs, an anti-diffraction magnetic grille, a non-resonant MDF cabinet and exclusive Power Port technology, you get elevated sound for movies, TV and music in a totally re-imagined design. Polk—expect great sound. Dynamic Balance Technology Driver Design Whether upgrading your home theater setup with an advanced Atmos configuration or enjoying your favorite music, Dynamic Balance ensures a rich, clean, full-range sound no matter what you’re listening to. This patented technology analyzes the speaker’s entire electro-acoustic and mechanical system for improved material selection and more efficient geometry. It pinpoints and eliminates issues that