Atrium Series Speakers exceed baseline industrial and military specifications for environmental endurance * Anodized Aluminum Tweeter Domes with Rubber Surrounds are absolutely immune to the elements, provide the smooth * Newly designed tweeter phase cap smoothes the frequency response from 12KHz up to 20kHz, the last audible octave. * Broad Coverage Baffle Design adapted and applied from our current Atrium design but a more steeply-angled baffle design * Speed-Lock Mounting System for easy, safe one-handed installations even in difficult locations. * Anodized aluminum tweeter domes with rubber surrounds are absolutely immune to the elements, offer better power handling and smooth response. * Atrium Series Speakers exceed baseline industrial and military specifications for environmental endurance. * Broad coverage baffle design fills a large open outdoor space with big, full-range sound. A more steeply-angled baffle maximizes critical mid- and high-frequency dispersion over a large area, without sacrificing detail. * Speed-Lock Mounting System for easy, safe one-handed installations even in difficult locations; 5 years parts and labor * Tweeter phase cap smooths the frequency response from 12KHz up to 20kHz, the last audible octave.