Polk Audio Atrium 6 Outdoor Speakers with Bass Reflex Enclosure (Pair, Black) - All-Weather Durability | Broad Sound Coverage | Speed-Lock Mounting System
A workhorse when it comes to filling large spaces with the kind of big, lifelike high quality sound for all your outdoor entertainment. Atrium 6 speakers are All-Weather Certified and Water-Resistant—built to withstand the worst elements—salt-fog, UV, extreme temps or heavy rains, you name it. Aluminum grilles and bracket, with stainless steel and brass hardware means no rust—ever. Polk's patented Dynamic Balance technology with 5.25" Driver, 1" Tweeter and Power Port Bass Venting analyzes the speaker's entire electro-acoustic and mechanical system for improved material selection and more efficient geometry. These speakers are easy to install and look great both outdoors and indoors.

Polk Audio Atrium 4 Outdoor Speakers with Powerful Bass (Pair, Black), All-Weather Durability, Broad Sound Coverage, Speed-Lock Mounting System
The compact Atrium 4 loudspeaker produces high fidelity sound quality anywhere you want great sound. Its small size makes it ideal for tight, out-of-way installations. With an aluminum dome tweeter and polypropylene cone driver in each speaker enjoy deep, accurate bass and smoother response. Polk's patented Dynamic Balance and Klippel Optimization technologies ensure perfect material performance, eliminating driver and tweeter "artifacts" for more realistic sound reproduction at high and low volume levels. The weatherproof cabinet features a rustproof aluminum grille, rustproof aluminum bracket, and stainless steel/brass hardware that can endure seasonal change and provide great indoor speaker-quality sound for years of outdoor listening enjoyment. Quick and easy to install with Polk's Speed Lock Mounting system.