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Polk Audio Atrium 4 All-Weather Outdoor Loudspeaker, 75Hz-25kHz, Pair, White

SKU: PKAAM4088A MFR: AM4088
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Key Features

  • Enjoy rich, detailed audio with these Polk Audio outdoor speakers, perfect for patios.
  • Experience powerful sound with a 4.5" Dynamic Balance woofer for clear outdoor audio.
  • These all-weather speakers feature a durable design, built to withstand the elements year-round.
  • Get flexible placement with the 180-degree Speed-Lock mounting system for easy installation.
  • The aluminum dome tweeter delivers crisp highs, enhancing your outdoor speaker listening.
  • These Atrium 4 outdoor loudspeakers offer great sound quality and lasting durability.
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Temporarily On Backorder?Expected Availability: 09/2025Request assistance or get notified
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Questions & Answers

Gary W. A : What size are the speaker cabinets?BRIAN H : I did a quick web search and came up with this...Dimensions: 8.6 inch (H) : 5.7 inch (W) : 6.7 inch (D)
Shopper : Are these speakers equipped with Blue Tooth?CRAIG W : No they are not. These are simply speakers. You still need a music source. (Amplifier, receiver, head unit, etc). But you could hook them to an audio source with Bluetooth, which I have done.JERZY L : No but you can connect them to receiver that has BluetoothJAMES B : No.
Shopper : Why Did You Choose This?Nancy T : great reviews on all sitesThomas K : Top rated outdoor speakers

Reviews about this item

Review Summary

2025-03-17T20:00:00

Rated 5 out of 5

We Love these speakers. The

We Love these speakers. The customer service we received was superior.

Tom B.

2023-06-11T20:00:00

Rated 5 out of 5

Nice speakers

Easy to install outdoors. The sound is very good. We bought 2 sets and have great sound out by the pool.

Botbot50

2022-06-06T20:00:00

Rated 5 out of 5

Polk Outdoor Atrium 4 Speakers

Excellent Speaker, best bang for your buck. I have multiple sets outside that have been exposed to the elements year round for many years. One pair is 10 years old and still sound great !

MDHunter

2022-05-10T20:00:00

Rated 5 out of 5

Atrium 4 outdoor speakers

Great sound and lasts a very long time in the Florida outdoor environment. Bought these to replace one of our 10 (ish) year old atrium 45. Still using 3 of the Atrium 45?s. Now I have a spare if I have future problems. Love the atrium 4 as well.

Florida g.

2022-05-05T20:00:00

Rated 5 out of 5

Speakers Sound Great and Look Great

Fantastic! We have a small 1300 sq ft cafe, and with just one pair of Polk speakers we have music throughout the space. We got the white ones, and with our very light green/blue walls, they just blend right in.

Blazing C.

2022-01-11T19:00:00

Rated 2 out of 5

Outdoor speakers that don't like the outdoors!

I bought a pair of these to finish off our garden patio project around 9 months ago. After bringing them inside for winter last week, I was shocked to find one full of water already! To be honest, I can't say I was overly thrilled. The water inside the cabinet must have been about an inch deep!

ScottyJ

2021-08-29T20:00:00

Rated 5 out of 5

Great speakers

Great speakers and a great price, I recommend these speakers

Tom M.

2020-07-09T13:04:24

Rated 5 out of 5

Great Price!

I have a previous pair so I knew the quality was good. Price was a great deal and shipping was fast.

MATTHEW M.

2020-07-07T08:52:39

Rated 5 out of 5

Ditch your old outdoor speakers for a pair of Polk Atrium 4's!

I replaced a pair of outdoor Bose speakers with these and what a difference! Instead of bass heavy and highly compressed sound, you get a nice full spectrum of sound, and still with good bass. Great overall tone from the speakers and good looking too. Easy to set up and given the holiday pricing, best value purchase I've made in a long time!!

JEFF S.

2019-09-20T18:17:51

Rated 5 out of 5

Great Speakers

Easy setup and great sound

RYAN T.

2018-09-11T13:40:53

Rated 5 out of 5

Excellent outdoor speakers

I have several Polk speakers throughout the house and these continue in the tradition of not disappointing. Mind you, I'm no audiophile, but I do enjoy music. The install was simple and they put out a nice balanced sound that can get quite loud (if wanted). They put out enough bass to make me feel like an outdoor sub would be extravagant. Vocals were clear. Overall, I'm very pleased with my purchase and would certainly recommend.

James C.

2018-06-06T08:32:22

Rated 5 out of 5

Polk Speakers

The speakers are a great size and the quality of the sound is very good. I’m very pleased with the purchase.

Larry M.

2018-05-27T11:58:13

Rated 5 out of 5

No competition

Great build quality and sound for the price. Nothing else in this range compares.

Tim D.

2017-05-24T16:48:42

Rated 4 out of 5

Good for the price

It was easy to install these attractive outdoor speakers and the sound quality is descent. Worth the price especially with a rebate. Didn't give it 5* because I can't speak to the how they will hold up to the outdoor elements

Luis G.

2017-05-21T14:16:53

Rated 5 out of 5

Polk Audio Atrium 4 All-Weather Outdoor Loudspeaker

I use these outdoors by the pool. Excellent sound.

Jonas I.

2017-05-21T08:53:04

Rated 5 out of 5

Love em

They are great in the garage!! At a great price.

kevin e.

2017-02-19T17:15:27

Rated 4 out of 5

Very nice speaker

Looks and sounds great. Haven't had them long enough to know how long they will last. Hopefully get Years out of it.

Michael T.

2017-01-18T18:52:28

Rated 4 out of 5

Best speaker for that price

I have used some different speaker, but impressed by the smaller size and the sound quality.

KALEEM A.

2016-12-09T07:47:25

Rated 3 out of 5

Pretty To Look At, Average Fidelity

I have other Polk speakers and these seem to follow suit in somewhat muddy midrange response. Still, they are attractive and well-constructed, worth the price with a rebate.

STEPHEN H.

2016-12-02T22:54:07

Rated 5 out of 5

Awesome Polk sound

Awesome Polk sound. I have an indoor surround sound that added the perfect touch.

STEVEN S.

2016-09-23T11:57:34

Rated 4 out of 5

Well built speakers

I've had a set of the atrium 45 speakers for a few years and have been satisfied with them. These atrium 4 speakers appear to be the current version since they appear and sound quite similar. I was using my first pair as rear surrounds and they sounded and worked good - however I'm moving them outside - which was my original intent. Don't expect any bass from these and if you boost the bass frequency to raise it, these will distort and eventually fail. A nice sounding little speaker with great flexibility and worth buying when on special.

BRIAN H.

2016-09-12T11:24:56

Rated 5 out of 5

Highly satisfied

Bought this set for my Deck and worked great! going to recommend to my friends.

PRIYANKA U.

2016-09-08T12:53:37

Rated 4 out of 5

More than satisfied

This was a great purchase for us to get some extra sound in the second zone of our place. While I'm no audiophile, they sound great.

BRYAN F.

2016-06-08T10:46:01

Rated 5 out of 5

Great sound for the price

Great sound for the price . Well built

RICHARD L.

2016-04-18T12:08:41

Rated 4 out of 5

Great little speakers!

I tested these out over the weekend after installing them on Saturday. I decided to place them underneath a patio cover in my backyard. They were place approx 18' apart. I have the pair hooked up to the ZONE 2 option on my Denon receiver. The mids and highs came through beautifully while the bass was just slightly lacking but was still very smooth. Full soundstage and you can crank these pretty loud without distortion. I played anything from hard rock, to country, to R&B and everything sounded great. Minus 1 star because I can't attest to the weather-proofing as of yet but they are outdoor rated. Very happy with the value of these speakers and highly recommend to anyone who is not an audiophile.

Aaron R.

2015-07-12T20:00:00

Rated 5 out of 5

Outstanding Sound

I bought one pair of these to replace some worn out Mirage speakers and I liked them so much I bought a second pair. We have them on our deck out back and the sound really does rival good indoor speakers. My wife loves their small size and looks and we both love the sound. Their off axis response is excellent, making placement much easier. If you need more bass, just pair them with an outdoor sub like I have. An excellent value.

Pro4X

2015-05-24T20:00:00

Rated 2 out of 5

not water tight

2nd pair of Polk Atrium speakers I have owned - both pair have filled up with water, Not water tight!

Larry D.

2013-08-05T20:00:00

Rated 5 out of 5

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.

Paul

2012-08-24T20:00:00

Rated 5 out of 5

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.

Dion

2012-08-17T20:00:00

Rated 5 out of 5

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.

Rien N.

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Polk Audio Atrium 4 Specifications

  • Mounting Options

    180-degree Speed-Lock mounting system

  • Driver Complement Mid / Woofer Diameter

    4.5" / 11.43cm

  • Driver Complement Mid / Woofer Type

    Dynamic Balance mineral-filled polymer cone with rubber surround

  • Driver Complement Tweeter Diameter

    0.75" / 1.91cm

  • Driver Complement Tweeter Type

    Anodized aluminum dome tweeter with neodymium motor structure

  • Electrical: Efficiency

    89dB

  • Electrical: Inputs

    Gold-plated 5-way binding posts

  • Electrical: Nominal Impedance

    8Ohms

  • Electrical: Recommended Amplifier Power

    10-80 Watts per channel

  • Electrical: Total Frequency Response

    75Hz-25kHz

  • Dimensions (D x H x W)

    6.68 x 8.62 x 5.68" / 16.97 x 21.89 x 14.43cm

  • Weight

    3.60lbs / 1.63kg (Each)

  • UPC Code

    747192118808

About Polk Audio Atrium 4

FEATURED REVIEWS

By dustin

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 e...

View full Review

Great speakers

By Tom M.

Great speakers and a great price, I recommend these speakers

An acoustic marvel in a compact form, the Atrium 4 All-Weather Outdoor Loudspeaker from Polk Audio delivers exceptional sound fidelity that belies its size. Designed for versatile placement, this stylish and efficient pair of speakers is perfect for spaces where traditional speakers might not fit, such as by the pool, in the kitchen, or discreetly in the family den. With the ability to fill your backyard or any outdoor setting with rich, full-range sound, the Atrium 4 stands out as a reliable choice for those who appreciate high-quality audio in every corner of their living space.

Crafted with a 4 1/2-inch (11.43cm) long-throw mineral-filled polypropylene cone driver, complemented by a butyl rubber surround, the Atrium 4 produces a surprisingly robust bass response from its compact design. The high frequencies are handled with finesse by a 3/4-inch (19mm) anodized aluminum dome tweeter, featuring a neodymium magnet for improved power handling and smoother response across the audio spectrum.

The broad coverage baffle design, a refined iteration from Polk's renowned Atrium series, ensures that these speakers deliver wide dispersion of critical mid and high frequencies, creating an immersive listening experience even in large open spaces. This design not only maximizes sound coverage but also maintains the intricate details of your favorite tracks.

Durability is a hallmark of the Atrium 4, with all-weather certification that surpasses rigorous 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). This certification guarantees that the Atrium 4 speakers can effortlessly endure extreme temperatures, heavy rains, and other challenging weather conditions, making them an ideal choice for both outdoor and high-moisture indoor environments.

Installation is a breeze with the Speed-Lock mounting system, allowing for easy, safe, and one-handed installations, even in the most challenging locations. The simplified mounting process minimizes the hassle, ensuring a secure and precise placement of the speakers.

The Atrium 4's cabinet is constructed from a durable, mineral-filled polypropylene, with molded-in bracing that not only withstands seasonal changes but also delivers sound quality comparable to indoor speakers. Polk's patented Dynamic Balance and Klippel optimization technologies are employed to ensure flawless material performance, eliminating any driver and tweeter "artifacts" for the most authentic sound reproduction at any volume level.

Finished with rust-resistant aluminum grilles and brackets, and featuring stainless steel and brass hardware, the Atrium 4 promises longevity with no risk of rust. Connectivity is made reliable with gold-plated 5-way binding posts, ensuring secure and dependable hookups.

Available in weatherproof black or white paintable finishes, the Atrium 4 All-Weather Outdoor Loudspeaker is not just a speaker - it's a statement of style and a testament to Polk Audio's commitment to sound excellence. Whether you're looking to enhance your outdoor entertainment or seeking a refined audio solution for indoor spaces, the Atrium 4 is engineered to impress.

Polk Audio Atrium 4 Features

  • Elevate your audio experience with the Polk Audio Atrium 4 Outdoor Loudspeaker, boasting 4.5-inch woofers and 1-inch tweeters that produce high-fidelity sound beyond expectation for a speaker of its size
  • Unleash exceptional durability through its weather-resistant construction and UV-protected grilles, ensuring that these speakers are not only built to withstand the elements, but also maintain their pristine appearance over time
  • Simplify your installation process with integrated mounting brackets, allowing you to effortlessly set up these speakers in your preferred outdoor space, so you can start enjoying premium sound without the hassle
  • Amplify your sonic landscape by seamlessly pairing these speakers with other Atrium models, granting you the ability to create a wider and more immersive audio environment that truly captivates
  • Immerse yourself in sound that spans the entire spectrum, as these speakers offer a broad frequency response ranging from 65 Hz to 20 kHz, delivering clarity and balance that enhances every listening session
  • Achieve impressive audio output with an 89 dB sensitivity rating, ensuring that your music or entertainment can be enjoyed with excellent volume levels that fill your outdoor area with rich, dynamic sound
  • Match your sound setup perfectly, as these speakers thrive with recommended amplifier power per channel ranging from 10 watts to 80 watts, allowing you to harness their potential and experience audio excellence
  • Elevate your listening encounter with Dynamic Balance technology, a cutting-edge feature that guarantees a nuanced and well-rounded audio profile, complete with deep bass and crystalline highs that resonate
  • Experience sound that feels truly authentic at both high and low volume levels, courtesy of Klippel Optimization technology, an innovation that refines sound reproduction for an unparalleled auditory adventure
  • Experience a stress-free and secure installation process with the Speed-Lock mounting system, providing you with a hassle-free way to set up these speakers and revel in their exceptional performance right away

Key Features

  • Enjoy rich, detailed audio with these Polk Audio outdoor speakers, perfect for patios.
  • Experience powerful sound with a 4.5" Dynamic Balance woofer for clear outdoor audio.
  • These all-weather speakers feature a durable design, built to withstand the elements year-round.
  • Get flexible placement with the 180-degree Speed-Lock mounting system for easy installation.
  • The aluminum dome tweeter delivers crisp highs, enhancing your outdoor speaker listening.
  • These Atrium 4 outdoor loudspeakers offer great sound quality and lasting durability.

What's in the box:

  • Polk Audio 2x Atrium 4 All-Weather Outdoor Loudspeaker
  • Polk Audio 5 Year Parts and Labor Warranty