Sound - Tube's WX Weather Guard technology utilizes a dual layer hydrophobic material inside the speaker grille to keep water from the drivers and internal electronics in even the most extreme weather conditions. Broad - Beam waveguide technology delivers a consistent dispersion pattern up to 10 k - Hz for maximum coverage area per speaker. One 5.25 inch (133 mm) polypropylene woofer and one 1.0 inch (25 mm) convex titanium tweeter with Ferro - Fluid cooling. 86.0 dB average sensitivity offers high output capabilities and reduced amplification costs. Includes stainless steel screws and grille for severe weather, outdoor applications. Easy access, six-position selectable tap switch for 25-, 70.7- and 100-volt applications with transformer bypass position. Patented Zero - Reflection enclosure technology for optimal sound reproduction and cabinet rigidity. Aluminum grille with powder-coat finish. Includes the new SM500i-II-WX Stealth bracket mounting system. Vertical and horizontal pivoting allow the SM500i-II-WX to be aimed anywhere within the installation space. Low profile enclosure design keeps the speaker close to the wall. UL 1480 (UEAY) planned. Included Accessories: Safety cable with speaker mounting bolt, Euroblock connector, wall mount bracket and terminal weather boot.