Signature Series 3i 12 CRGBW Sports Subwoofer - White The Signature Series 3i range of premium marine speakers, subwoofers, wake tower speakers, and tweeters delivers crystal-clear audio and withstands marine conditions like never before. With an enhanced design for the harsh marine environment, the Signature Series 3i range features new marinized connectors and a redesigned grille for easy installation and superior protection. Incorporating premium materials and superior acoustic engineering, y