Model FA138 is Atlas Sound's premium 8" coaxial loudspeaker. This 32-watt unit includes a circuit board mounted high-pass/low-pass crossover which produces outstanding sound quality. It incorporates a tapered backplate for increased magnetic circuit efficiency and offers a frequency response of 75Hz - 20kHz. Model FA138 contains a Kevlar fiber 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 ferro fluid tweeter for clean and powerful weather-resistant performance.