The Industry"s Only Constant Directivity Re-Entrant Horn. New CD Series horns from Atlas Sound provide greatly improved uniform sound coverage compared to conical designs. With all models the horizontal coverage pattern is precisely controlled over a frequency range. For mounting, the proven CJ46 style heavy-duty steel mounting bracket is utilized with positive lock for horizontal and vertical positioning in single or stacked multi-unit clusters. Construction is polyester resin and glass-fiber laminate integrally molded to a die-cast zinc throat section. Recommended Atlas Sound Drivers: PD30 Series, PD-5 Series, PD60 Series.