Patented BroadBeam Ring™ waveguide technology delivers a consistent dispersion pattern for maximum coverage area per speaker. One 8.0inch polypropylene woofer and one 1.0inch convex titanium tweeter with FerroFluid cooling mounted to a proprietary cast-aluminum baffle and heat sink. Rapid-installation, blind-mount, fixed-wing mounting mechanism with constant-tension design affixing to ceiling thicknesses ranging from 0.25inch (6.4mm) to 1.91inch (48.5mm). Easy-access six-position selectable tap switch for 25-, 70.7- and 100volt applications with transformer bypass position. Separate tool-free magnetic grille and bezel assembly with integrated safety cable for ease of install and in-field painting. Steel grille with protective powder-coated finish for lasting durability. An average sensitivity of 90dB offers high-output capabilities and reduced amplification costs. UL 1480 (UEAY) and 2043 approved. Included accessories: Tile bridge, conduit plate, Euroblock connector and paint mask.