TH 77 SAX brings the Thesis reference to the zones where space is measured. The same 1.5 in. tweeter as the rest of the collection, extended to 40 kHz and certified Hi-Res Audio, in a 7.7 in. coaxial engineered for salt, ultraviolet light and vibration. The double-wave grille disperses sound across open decks while deflecting water, and integrated RGB CCT lighting makes the speaker part of the design of the vessel.