Perfect for indoors or out, the Polk Audio Atrium 4 all-weather loudspeaker system lets you bring your audio all around your home. And with advanced acoustics, it's got the power to fill a large area with hi-fi sound.

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A 19mm soft dome tweeter and 4.5" dynamic balance composite driver are acoustically designed to bring a great spectrum of sound to a wide area
An all-weather design makes it ideal for almost any environment
Meets military specifications as well as ASTM UV, salt, and UV specs