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Polk Audio > 
Item#: N82E16882290029

Polk Audio Atrium 45 White High Performance Outdoor Speaker Pair

  • 75Hz - 20kHz
  • 8 ohms 10 - 80 w/channel
  • 89 dB

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Polk Audio presents speakers so tough that a desert war zone can't kill them. The Atrium 45 speakers feature stainless steel and brass hardware to eliminate rust worries, even outside. These speakers meet or exceed various government standards for salt fog, immersion, salt and corrosion tests. The 5-way binding posts are gold plated to prevent corrosion.

The speakers are a 4.5" mid/woofer with a mineral filled polymer cone and a 0.75" soft dome tweeter with a Neodymium magnet. The sculpted front baffle and round enclosure minimize diffraction and deliver a more open, natural sound. The aluminum grill is 55% open for superior sound transmission without compromising the protection it gives the cones.

  • newegg Exceptional Sound Quality The Polk Audio Atrium 45 boasts a 4.5" Dynamic Balance, mineral filled polymer driver and a 0.75" Neodymium magnet soft dome tweeter to deliver crisp highs and accurate lows for an immersive listening experience.
  • newegg Military-Grade Waterproofing Built to military specifications for waterproofing, the Polk Audio Atrium 45 is capable of withstanding water, salt and corrosion or any harsh environment for years of reliable performance anywhere in and around your home.
  • newegg Gold-plated 5-way Binding Posts The Polk Audio Atrium 45 features gold-plated 5-way binding post inputs to ensure maximum conductivity for improved signal transfer, resulting in better audio quality.

Learn more about the Polk Audio Atrium 45 White


Polk Audio
Atrium 45 White


Indoor/Outdoor Speakers
Sold As
Driver Units
Mid/Woofer: 1 - 4.5" Diameter, Dynamic Balance, mineral filled polymer with rubber surround

Tweeter: 1 - 0.75" Diameter, Soft dome with Neodymium magnet
Power Rating
10 - 80 w/channel
Frequency Response
75Hz - 20kHz
Nominal Impedance
8 ohms
89 dB
Gold-plated 5-way binding posts Input




Dimensions & Weight
9.5" x 6.25" x 7.63" / 5.00 lbs.


All hardware is either stainless steel or brass for years of rustproof reliability

Meets or exceeds ASTM D5894-UV Salt Fog, Mil standard 810 Immersion and Mil standard 883 Method 1009 8 for salt and corrosion tests

Rustproof aluminum bracket allows multiple mounting options and full 90 degree rotation: aim them to deliver the best possible sound in a variety of locations

Rustproof aluminum grille has 55% open area for superior sound quality

Sculpted front baffle and rounded enclosure minimize diffraction (sound reflecting off of hard edges) for more open and lifelike imaging

Enclosure Type: Sealed

Manufacturer Warranty

5 years limited
5 years limited
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 5 years
  • Read full details

Customer Reviews of the Polk Audio Atrium 45 White

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  • Rodney H.
  • 3/8/2011 2:45:52 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsNot just for Outdoors

Pros: I got 2 pair of these to use as my 7.1 surround system speakers (on sale at the Egg). Considering price per performance I think they're pretty hard to beat. The bracket worked well for mounting them to the ceiling, I didn't have to go searching for mounts.

Cons: Yes, they're a little brighter than you might like for a set of front speakers, but not that bad considering price and size. I just used them as my back 4 surround speakers for a 7.1 system. As all the other reviews say...yeah they're a little bright but the price on, and how I use them there's no real downside.

Other Thoughts: I did a side by side comparison against my normal front speakers, a pair of "vintage" Celestion SL-6 's. The Celestion was better, but not by a lot...and they cost a lot more than these when I bought them new in the late 80's.

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  • John H.
  • 1/26/2011 11:11:38 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsfatcat

Pros: For the price, these speakers cannot be beat. They install easily, look good, and perform well for their size.

Cons: Bass is somewhat weak, but that should be expected, based upon the size of the product.

Other Thoughts: Polk support is outstanding. I had also purchased a set of Atrium 55 speakers, and left in the box for a future install. When I openned the box, I found that one of the speakers had a broken baffle. I called Polk, and a new speaker and baffle assembly were promptly sent. These guys are first class.

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  • James O.
  • 12/21/2010 8:58:42 PM
  • Tech Level: Somewhat Low
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsPretty Good

Pros: They sound good, especially for their small size and the outdoor protections

Cons: They don't sound as good as the similarly-priced Monitor30. That isn't to say they sound bad. These are quality Polk speakers. They just aren't as good as the Monitor 30.

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  • Anonymous
  • 12/18/2010 1:23:59 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggspretty good

Pros: with the discount on black friday they were great buy, not sure if I would pay the regular price, they are quite bright sounding, nice high and crisp

the other good side is they are not that large, but that is there drawback at the same time

Cons: the bass is lacking, having 2 zone option, I had the regular sound system on with 400-600 sub, and then they sounded nice, so they are great if you can pare them with a decent outdoor sub and you will have more quality then you care for outdoors

Other Thoughts: pair these up with a decent sub and they sound complete

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  • Timothy B.
  • 12/3/2010 6:04:39 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsSneaky EGG!!!

Pros: Been wanting this item for a while now, at $199.00 was going to hold off. THEN I get a mass e-mail saying the speakers are on sale 1 day only for $69.00, Wow that’s what I said better get them while I can..I feel suckered, lol the same speakers are on clearance at best buy for the same price. Hear I thought Newegg was on point with a great sale……..

Cons: none at this time

Other Thoughts: Either way Polk is a great speaker, customer support is %100 great, I have about $4000 in my Polk surround speakers and had 1 warranted without a problem. I will mount the speakers around my pool this summer and will revise my review of their performance.

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Item#: N82E16882290029
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