The TrAx50 adds a .75-inch alloy tweeter to the wide range 5.25-inch ACAD driver built specifically for this series. The addition of the tweeter adds sparkling high-frequency details and a broader sonic range to these models. The result is an excellent high-fidelity performance from compact and unobtrusive speakers that can be installed just about anywhere. The possibilities are almost endless including the ceiling in a bathroom or stall shower, hallways, foyers, workshops, garages and so many more. And the best part is you simply don’t have to worry about the temperature or the weather. *IP67: Meets or exceeds MIL-STD-810G standards (speakers must be sealed under the flange for the waterproof rating).