Big outdoor sound built to shrug off the weather The Polk Audio Atrium 5 All-Weather Outdoor Speakers (White) bring proper hi-fi sound to the patio, deck or poolside. Supplied as a matched pair, they team a 5" mid/woofer with a 0.75" tweeter and Polk's PowerPort bass venting for full-range sound outdoors. Every part is built and certified to handle salt-fog, UV, extreme temperatures and heavy rain, so they can stay outside all year. Why You'll Love It All-weather by design. Certified and water-resistant against salt-fog, UV, extreme temperatures and heavy rain, so they keep performing outdoors season after season. Bass you can feel. Polk's PowerPort venting and Dynamic Balance driver technology deliver deep, clean low end from a compact outdoor cabinet. Mount them your way. The 180° Speed-Lock bracket allows horizontal or vertical placement and easy aiming toward your main seating area. Under the Hood Two-way driver array. A 5" (12.7 cm) mid/woofer and 0.75" (1.91 cm) tweeter cover a total frequency response of 60 Hz to 25 kHz. Easy to drive. An 8 Ω nominal impedance and 90 dB sensitivity make them a comfortable match for most amplifiers and receivers. Sensible power range. Rated for 10 to 100 watts per channel, so they suit modest and larger outdoor systems alike. CHT Insider Verdict The Atrium 5 is one of the safest ways to add real outdoor sound without babying the speakers through every weather change. The pair fills a courtyard or deck with clear, balanced sound, and the swivel mount makes aiming simple. For most homes it is a well-judged size in Polk's outdoor range. Pro Tip: Run outdoor-rated, UV-resistant or direct-burial speaker cable and keep your amplifier output inside the quoted 10 to 100 watts per channel to protect the drivers over long summer sessions. Specifications Audio Total Frequency Response 60 Hz - 25 kHz Nominal Impedance 8 Ω Sensitivity (1 W @ 1 m) 90 dB Drivers Mid/Woofer 5" (12.7 cm) Tweeter 0.75" (1.91 cm) Amplification Recommended Power Per Channel 10 - 100 watts Mounting Mount Type 180° Speed-Lock system Orientation Horizontal or vertical Dimensions & Weight Height 26.19 cm Width 17.15 cm Depth 19.69 cm Weight 2.09 kg In the Box Quantity Pair