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Polk Audio


Internet # 203561099

Atrium4 80 Watt All-Weather Outdoor Loudspeaker (White)-DISCONTINUED

This item has been discontinued.
The Home Depot no longer carries this specific product.

$129.95 / pair



Internet # 203561099

The compact Atrium4 loudspeaker produces high fidelity sound quality anywhere you want great sound. It’s small size makes it ideal for tight, out-of-way installations. By the pool, around the kitchen, tucked away in the family den or filling the backyard with great sound. Like our bigger Atriums, the Atrium4 is built rugged to deliver years of great performance fall, winter, spring and summer.

  • 4 1/2-in. (11.43cm) long-throw mineral-filled polypropylene cone driver with butty. rubber surround pumps out surprising bass response from a compact design
  • 3/4-in. (19mm) anodized aluminum dome tweeter with 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 all-weather certified, Atrium Series speakers exceed baseline industrial and military specifications for environmental endurance (ASTM D5894-UV salt fog, mil standard 810 immersions, 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, with certification like this, your kitchen or bathroom installation is a cakewalk for Polk all-weather speakers
  • Speed-Lock mounting system, for easy, safe one-handed installations even in difficult locations, the greatly simplified mounting procedure means fewer parts to “juggle.” simply mount the bracket and click the speaker into place, Aim it and tighten it down, and fini, outdoor convenience, indoor sound quality
  • 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
  • Available in durable, weatherproof black or white paintable finishes


Assembled Depth (in.) 
6.68 in 
Assembled Height (in.) 
8.62 in 
Assembled Width (in.) 
5.68 in 
Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Tweeter Size (In.) 
Woofer Size (In.) 
Color Family 
Electronics Features 
No Additional Features 
High Frequency Response (kHz) 
Impedance (ohms) 
Low Frequency Response (Hz) 
Mounting Bracket Included 
Peak Wattage 
Sensitivity (dB) 
Speaker Connection Type 
Wall Mountable 
Wireless Speakers 
Warranty / Certifications
Manufacturer Warranty 
5 Year parts & labor (original purchaser) 


Rated 5.0 out of 5 by 8 reviewers.
Rated 5.0 out of 5.0 by I bought two pair of these to put below decks in our sailboat. I figured being outdoor speakers, they would work well and I would not have to worry about them while the boat was out of the water in the winter months. Installed them this past weekend and we are very happy with them. The boat's stereo system has Bluetooth so we could watch a movie on my laptop and play the audio over the stereo. The sound was incredible, much better than even our home theatre system. Speakers are compact and easily placed, which is a big plus with the limited room in a boat. July 2, 2012
Rated 5.0 out of 5.0 by I got the atrium 4's a couple weeks ago, they have amazing sound compatible to bose witch was great considering the price difference and I assure you I have already tested the durability of them... 2 days after mounting them on my back porch we had a severe thunderstorm that produced golf ball size hail! I personally watched these speakers take multiple hits from this hail, after the storm had passed I turned them on to see if they still worked and sure enough they sounded just fine and not even a scratch or dent! Great job polk! I would recommend these to anyone. April 8, 2012
Rated 5.0 out of 5.0 by Was concerned that the low end wouldn't be enough, but after installing them I was very pleased. I have them out on my deck, which is a very open space, and they provide full, rich sound! I also have a gazeebo out in the yard and the sound easily reach to it. August 5, 2013
Rated 5.0 out of 5.0 by These are great if you're looking for smaller size outdoor speakers, which is the main reason I got them. The sound is clear and has a nice lower end and higher end as well. They can reproduce realistic sounds of saxophones and drums (Jazz fan). They should last long as expected. August 25, 2012
Rated 5.0 out of 5.0 by Just installed an Atrium 4 speaker set and I must say I'm pretty amazed! Good sound, especially for my purpose, upgrading my porch with music, not to be played at party levels. I really am curious how the Atrium 5-up sound! - the Atrium 4 is already awesome. August 17, 2012
Rated 5.0 out of 5.0 by I was looking for an inexpensive outdoor speaker with great sound quality and the Atrium4 delivers! I was a little skeptical that they might be too small to give good full range sound, but they really do have a decent amount of bass. October 17, 2011
Rated 5.0 out of 5.0 by We bought the more expensive Bose speakers and they sounded tinny and had very little bass. We returned them and bought the Atrium 4's and we absolutely love them. They are what we were looking for. September 3, 2011
Rated 5.0 out of 5.0 by Saw these at best buy and they are fantastic, great price too. Easy to install and comes with tips for paiting the product other colors. I acutally like these better than the more expensive Bose model March 28, 2010
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