High-efficiency, 15 watt compression driver with proven record of outstanding service reliability Double re-entrant design provides superior audibility of voice and tone signaling Vandal and environment-resistant metal construction for outdoor or indoor use Transformer(T) equipped version for 25, 70.7, or 100V line Choose from matching grilles, enclosures and mounting. Rings (order separately) May be flange or recess mounted Provide 15 watts of continuous power handling with superior intelligibility and efficiency with Atlas Sound APF Series Omni-Purpose loudspeakers. Vandal-resistant units are designed for flange or recessed mounting to panels, interior/exterior walls, or ceilings. Metal construction withstands adverse temperatures, humidity and physical abuse. For flexibility and optimum adjustment convenience, transformer-equipped Model APF-15T includes the Vari-Tap Control/connect center with 7 position, wattage/impedance selection switch.Weather-resistant metal construction and enclosed wiring terminals eliminate the need and cost of a backbox. However, for aesthetic consideration and retrofit convenience, models will flange mount to any standard size ceiling or wall baffle and/or enclosure capable of accommodating conventional 6" or 8" diameter loudspeakers. Model FAMT-6 mounting kit is required for 8" models.) Recessed installation may be accomplished by mounting Models APF-15 or APF-15T into a 4" or 5 1/2" deep opening, respectively, or to an L20 Series enclosure. L20 Series also includes mounting rings and baffles. Loudspeakers are finished in grey baked epoxy. Depth 5" (13.18 cm) Diameter 5" (14.29 cm) Shipping Weight 4.00 lbs (1.81 kg) Frequency Response 600-14,000Hz Power Taps 1, 2, 3.8, 7.5, 15W @ 70.7V Dispersion 95 Power Rating 15 Watts Sensitivity 104dB UL Listed/Standard 1480 Also known as -Atlas Sound - APF15T - At/snd 15w Flng W/xfmr(70/25v)