Model FA138T167 is Atlas Sound's premium 8" coaxial loudspeaker with a factory installed, high efficiency 16 Watt 70.7V transformer. The loudspeaker includes a circuit board mounted high-pass/low-pass crossover which produces outstanding sound quality. Model FA138 contains a reinforced polypropylene cone woofer, a custom butyl rubber surround, a 1 1/2" vented Kapton voice coil, a 21 oz. magnet and a 1/2" mylar-dome ferrofluid cooled tweeter for clean and powerful weather-resistant performance. The integral 16 Watt 70.7V transformer features a 40Hz to 15kHz frequency responce (+/- 1 dB) with 4, 8 and 16 watt primary taps. For optimum acoustic and application versatility the Strategy series has been engineered as a system offering both the FA97-8 Series high performance enclosures (.22ft3) with acoustic batting as well as the economy FA95-6 Series (.17ft3) backbox enclosures. The enclosure front-loads the loudspeaker and installs quickly and easily into the ceiling using only a screwdriver to adjust the rotating clamps. Loudspeakers may also be ceiling or wall mounted into areas with minimum depth by using plaster ring Model FAPR-8 instead of an enclosure.