CREATED TO LIVE AND PLAY OUTDOORS, your Atrium Speakers can be installed in any open space—by a pool, in the patio or a sunroom, or tucked away somewhere in the backyard. They will deliver EXCEPTIONALLY GREAT SOUND | WIDER SOUND DISPERSION & SURPRISINGLY POWERFUL BASS driven by a 4 1/2" mineral filled Dynamic Balance polymer cone and a 3/4" anodized aluminum dome tweeter with rubber surround. 80W power CUTS THROUGH LOUD, JARRING BACKGROUND NOISES | Recognized as one of the best-looking outdoor speakers, polk atrium 4 speakers come with a steeply-angled baffle design filling open spaces with big full-range sound! The outer profile easily blends into the corners of the outdoor walls | One-click speed-lock mounting bracket offers easy, anti-slip one-handed installation allowing you to mount these speakers vertically or horizontally, to deliver the best possible sound in a variety of situations. Simply mount the swiveling c-bracket | THE SPEAKER FOR ALL SEASONS – it’s rugged durability, high environmental endurance and superior quality has helped Polk Outdoor Speakers earn the all-weather Certification. EFFORTLESSLY WITHSTANDS EXTREME TEMPERATURES AND HEAVY RAIN year after year