Polk Audio: Like all our other multi-application loudspeakers that were created to live and play outdoors, the Atrium45 meets or exceeds several stringent military waterproofing specifications.

Like all high quality Polk speakers, the dome tweeters and polymer drivers in all Atrium series speakers are both Dynamic Balance and Klippel Optimized. Dynamic Balance allows us to see the operation of the component on a microscopic level, reducing or eliminating artifacts that color the sound. Klippel Optimization ensures the speaker will perform well at both low and high volumes levels.
Product of Polk Audio