Polk Audio "Atrium 4" All-Weather Outdoor Speaker for Sale. Used, but in good condition. Below is info from the manufacture...
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. Each speaker incorporates a 19mm soft dome tweeter and a 115mm dynamic-balance composite woofer, which are acoustically designed to bring a great spectrum of sound to a wide area. The all-weather design makes it ideal for almost any environment. Meets military specifications as well as ASTM UV, salt, and UV specs. Speed Lock mounting bracket allows the speaker to be mounted in various positions vertically or horizontally
* 75Hz - 25 kHz frequency response
* 89 dB Sensitivity
* 19mm soft dome tweeter
* 115mm dynamic balanced woofer
* 80 Watt RMS power handling
* Gold plated 5 way binding posts
* Wall mounts included
* Weight 4.31 kg