POLK AUDIO ATRIUM4

• 4 1/2" (11.43cm) Long-Throw Mineral-Filled Polypropylene Cone Driver
  With butyl rubber surround pumps out surprising bass response from a compact design.
• 3/4" (19mm) Anodized Aluminum Dome Tweeter
  With rubber surround and neodymium magnet for better power handling and smoother response.
• Broad Coverage Baffle Design
  Adapted and applied from our current Atrium design but with subtle improvements in the new Atrium Series. You want to fill a large open outdoor space with big, full-range sound, The new Atrium Series has a more steeply-angled baffle design that maximizes critical mid- and high-frequency dispersion over a large area, without sacrificing the detail.
• Polk Audio All-Weather Certified,
  Atrium Series Speakers
  Exceed baseline industrial and military specifications for environmental endurance (ASTM D5894-UV Salt Fog, Mil Standard 810 Immersion, Mil-Std 883 Method 1009.8 for salt and corrosion.) Certification means Atrium Speakers can effortlessly withstand the worst Mother Nature can dish out, whether its extreme temps or heavy rains.
• Durable, Mineral-Filled Polypropylene
  Cabinet Design
  With molded-in bracing, sounds like a real speaker
  (not "an outdoor speaker"), and survives years of seasonal changes, for truly great sound, no matter what the weather.
• Patented Dynamic Balance
  and Klippel Optimization Technologies
  Ensure the perfect material performance, eliminating driver and tweeter "artifacts" for more realistic sound reproduction at high and low volume levels.
• Aluminum Grilles and Bracket
  With stainless steel and brass hardware: No rust. Ever.
• Gold-Plated 5-Way Binding Posts
  For the most secure, dependable hookups.

Warranty Information:
See Owner’s Manual for Complete Details.