The F-122C ceiling-mounted speaker covers an extremely wide area and can be used for25, 70 and 100 V line applications. Well-balanced sound can be heard uniformly at any location.Its bass-reflex speaker system is designed to provide rich sound with high power handling capability. Its wide-dispersion flush-mount ceiling speaker design employs unique acoustic construction to realize a wide area of coverage. Uniform sound output levels are achievable not only directly under the speaker, but also over a wide radius. Because the speaker provides both low- and high-impedance operating capability, it can be used in many different applications. A front panel-mounted input selector switch permits easy verification and change of current impedance/power settings, even after installation. It can be quickly and accurately mounted to ceilings and the rotating front grille can be installed/removed quickly and easily. It has an attractive exterior design specially created by an interior designer to blend naturally with any architectural space. Optional mounting hardware permits exposed installation or installation in weak ceiling panels.