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Polk Audio Atrium8 SDI All-weather indoor/outdoor speaker with selectable stereo input mode (Black)

Item # 107ATR8SDB

Use Polk's Atrium8 SDI speaker when you need maximum flexibility along with premium outdoor sound.

Use Polk's Atrium8 SDI speaker when you need maximum flexibility along with premium outdoor sound.

Item # 107ATR8SDB

In stock
C$349.00 each

Other options

About the Polk Audio Atrium8 SDI

Tara W.
Use Polk's Atrium8 SDI speaker when you need maximum flexibility along with premium outdoor sound. It can stand alone as a single stereo speaker, or you can put two together for a high-performance stereo pair. One speaker is convenient when you want to pump tunes to a smaller area, like a deck or patio, or when mounting options are limited. If you have room for two speakers, these speakers will give you fuller sound and better stereo separation in larger listening areas. A simple switch allows you to choose between single-speaker or traditional two-speaker stereo playback.

Use Polk's Atrium8 SDI speaker when you need maximum flexibility along with premium outdoor sound. It can stand alone as a single stereo speaker, or you can put two together for a high-performance stereo pair. One speaker is convenient when you want to pump tunes to a smaller area, like a deck or patio, or when mounting options are limited. If you have room for two speakers, these speakers will give you fuller sound and better stereo separation in larger listening areas. A simple switch allows you to choose between single-speaker or traditional two-speaker stereo playback.

This speaker boasts the build quality you'd expect from Polk. It gives you superb audio performance, thanks to dual 1" tweeters, one 6-1/2" woofer, and PowerPort® bass venting. And the rugged, weatherproof design meets or exceeds stringent military specifications for full exposure to the elements. That means you'll enjoy years of great tunes, whether you install them in your bathroom or in your backyard.

Polk's new Speed-Lock™ system makes mounting the Atrium8 SDIs quick and easy. Install the bracket and simply click the speaker into place. Then just aim the sound towards your listening area and tighten down the included thumbscrew.

Got wire?
Most speakers don't include any. Learn more about in-wall wiring at the Crutchfield Learning Centre.
Shop our selection of in-wall speaker wire.


Product highlights:

  • Featured in our article: Best outdoor speakers for 2024
  • all-weather enclosure
  • one 6-1/2" woofer
  • two 1" aluminum dome tweeters
  • tweeter placement is designed for better stereo separation in single-speaker setups
  • PowerPort® technology for better bass response
  • frequency response 45-27,000 Hz
  • sensitivity 91 dB
  • impedance: 8-ohm stereo (dual-input) or 4-ohm mono (single-input)
  • handles up to 125 watts per channel
  • includes mounting hardware
  • 8-1/2"W x 12-7/8"H x 9-7/16"D
  • warranty: 5 years
Priced each
  • MFR # AM8085-A

What's in the box:

  • Black all-weather speaker
  • Mounting bracket (installed) Owner's Manual
  • Online Product Registration card
  • Polk Audio brochure

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Customer reviews for Polk Audio Atrium8 SDI

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5.0 out of 5 stars
211 reviews

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More details on the Polk Audio Atrium8 SDI

Stacey B.

Features & specs

Type Surface Mount
Built-in Amplification No
Bluetooth No
Enclosure Ported
Tweeter Type Hard-Dome
Tweeter Size (inches) 1
Midrange Size (inches) N/A
Woofer Size (inches) 6.5
Woofer Composition Polypropylene
Woofer Surround Butyl rubber
Power Range (watts) 10-125
Sensitivity 91 dB
Impedance (ohms) 8
Frequency Response 45-27k Hz
Connector Type 5-Way post
Height (inches) 12-13/16
Width (inches) 8-5/8
Depth (inches) 9-7/16
Weight (pounds) 9.7
Wall-mountable Yes
Bracket Included Adjustable bracket
Parts Warranty 5 Years
Labor Warranty 5 Years
The Polk Audio Atrium8 SDI replaces these items:

Product Research


Weatherproof Design: 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 outdoors, and hold up in extreme temperatures and precipitation.

Polk Patented Technologies: 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.

  • Dynamic Balance: A Polk perfected method of analyzing a speaker's microscopic behavior with laser Interferometry. Polk engineers can tune out unwanted resonance and distortion with the right combination of materials, geometry and construction techniques. This brings you pure, distortion-free sound.
  • Klippel Optimization: By using a state-of-the-art Klippel Distortion Analyzer, Polk engineers were able to optimize the woofer's motor structure, voice coil alignment and suspension bringing you the best possible performance even at extreme listening levels.

6.5" DVC Woofer: The Polk Audio Atrium8SDI uses a dual-voice coil long-throw aerated polypropylene 6.5" woofer for clean midrange and deep, accurate bass. The dual voice coil design adds greater efficiency and power handling. For a smoother response and improved durability, the woofer uses a butyl rubber surround.

Dual Tweeters: The Polk Audio Atrium8SDI has two 1" anodized aluminum dome tweeters with rubber surrounds and neodymium magnets for better power handling, smoother response and greater accuracy. This Dual Tweeter Array features Stereo Tweeter Aiming for excellent imaging, allowing you to use the Atrium8SDI as a single stereo speaker, or as half of a stereo pair.

Rugged Enclosure Design: The 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 great sound, no matter what the weather. The rugged, mineral-filled polypropylene enclosure features a rustproof aluminum grille, rustproof aluminum bracket, and stainless steel/brass hardware.

Note: The speakers are available in a black or white finish. The enclosure is also paintable.

Broad Coverage Baffle Design: The sculpted front, steeply-angled baffle design and rounded enclosure minimize diffraction (sound reflecting off of hard edges) for more open and lifelike imaging.

Dual Input/Single Input Feature: A rear mounted switch allows the Atrium8SDI to operate as a single, dual-input speaker for stereo applications, or a traditional single-input speaker for left or right use. When using the Atrium8SDI as a single stereo speaker, the dual tweeters and dual voice coils handle the left and right signals independently. For a stereo configuration, 4-conductor wiring is required, and one Atrium8SDI is equivalent to a pair of 8-ohm speakers. For traditional single-input use, only 2-conductor wiring is needed and the speaker impedance is 4-ohms.

5-Way Binding Posts: The Atrium8SDI has two sets of gold-plated 5-way binding posts that will accept bare wire, pin connectors, spade connectors, and banana plugs (single or dual).

Speed-Locking Mounting System: The included rustproof aluminum bracket allows multiple mounting options and is quick-and-easy to install. The Atrium8SDI can be mounted either horizontally or vertically and aimed to deliver the best possible sound in a variety of situations The integrated bracket provides full 180-degree rotation (when mounted vertically or horizontally. The mounting bracket even allows the speaker to be mounted snugly in a corner or under an eve (at a downward 45-degree angle). You can remove the bracket and use the speaker's built-in stability feet, if you simply want to place the speaker on a table or shelf.


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Customer Q&A

14 questions already asked

Will these speakers work well with marantz 6015 playing thur zone 2?
woodrow  Apr 18, 2022
1 answer
Not familiar with the Marantz, but they work great with my Yamaha RX-A3080!
brad  Apr 20, 2022
Can the Atrium 8, while mounted to the bracket, turn a complete 90 degrees?
david  Mar 30, 2022
2 answers
Yes it can. There are tightening adjustments at both ends of the bracket that allow or restrict the rotation of the speaker, so just aim the speaker to your liking, tighten up the bracket ends and enjoy the music!
matthew  Mar 30, 2022
robert p  Mar 30, 2022
I am planning to put this in my farm in the Philippines and I am wondering if the power out of 220 will affect the Atrium 8? And is this compatible with Bose 360 home theater system?
dennis  Sep 01, 2021
1 answer
Your power line voltage will not affect the speaker. The Bose 360 home system amplifier may or may not be compatible with the Polk Atrium speakers. You might want to check with Bose tech support.
royce  Sep 07, 2021
What gauge wire is recommended for the Polk Atrium 8 SDI?
nicholas  Aug 16, 2021
1 answer
Hello.. Depending on the distance From 1 to 9 feet 14 gauge stranded wire If you're Going grader than 9 feetI use 12 Gage stranded wire
michael  Aug 17, 2021
Are these speakers bluetooth?
gregorio  May 21, 2021
2 answers
No, they must hard wired. You can use a Sonos amp, which would allow you to control from the app.
kevin  May 22, 2021
No. They require an amplifier. You could buy an amplifier with Bluetooth but the speakers will still need wiring ran to them.
ryan  May 21, 2021
Is the Atrium 8, Heos compatible and does that mean that I don't need to hardwire it to the receiver?
chris  Mar 14, 2021
1 answer
No, these do not have an amplifier in them so you would need to hard wire them.
ryan  Mar 14, 2021
Are the mounting brackets made of plastic or metal?
johnnymarsh39  Aug 31, 2020
7 answers
They are metal
austen  Sep 01, 2020
They are metal.
chad  Aug 31, 2020
yes they are made of metal
kevin  Aug 31, 2020
Metal. Strong metal.
elleyne  Aug 31, 2020
There are metal and quite sturdy.
paul  Aug 31, 2020
They are metal.
john  Aug 31, 2020
The mounts are all Metal and very well made and sturdy. I've had other brand outdoor speakers and these mounts and speakers are the best!!!
carl e  Aug 31, 2020
What is something good to use to power 2 of these?
ethan  Jul 27, 2020
2 answers
For patio listening in stereo only the Yamaha R-S202 pairs well. The power match is ideal and it allows Bluetooth pairing with your phone or other Bluetooth device.
chad  Jul 28, 2020
I am using the Denon - IN-Command Series 9.2-Ch. Bluetooth Capable with HEOS HDR Compatible A/V Home Theater Receiver. The speakers sound great on our patio.
mike  Jul 27, 2020
Can I run two speakers as a stereo set and one individually with both channels, all off the same receiver? 3 speakers two zones.
tim  Apr 12, 2020
1 answer
Yes. The 3rd speaker can have a stereo pair of wires connected. Ensure to read the instructions from Polk Audio.
allen  Apr 12, 2020
do these work with google home?
dennis  Mar 04, 2019
3 answers
It depends on the device that is powering the speaker Enter an answer to this question.
rob  Mar 04, 2019
Don't know
christopher  Mar 04, 2019
This is just a speaker, they have no 'smart home' type components built into them. You connect them to an amplifier and music source. If you have an Amp or something that's powering them that's capable of integrating into an ecosystem like Google Home, then yes. But natively by themselves no.
david  Mar 04, 2019
What is the +/-3db limit frequency responnse of the Atrium 8?
steve  Nov 22, 2018
1 answer
The frequency response on the Atrium 8s is 45 - 27,000 Hz. If you have any other questions about the specs on those Polks or any other speakers call or chat with one of our Product Advisors --Cosmo
casey  Nov 28, 2018 (Staff)
I would like to put these on the doors of my 16x12 ft work shop so I can listen to music inside and outside just by opening or closing the doors. My question is how would they sound in a smaller space like my shed seeing how they are made for large open areas?
brandon  Jul 16, 2018
1 answer
This is my second set of Polk Atrium SDI speakers. I've been able to mount both sets over the years in optimum spots on patios and each time, the sound has been very good. I would think they would be very good in an enclosed area such as yours, similar to most interior only speakers. Remind you that the woofer is not the size of typical indoor speakers, i.e. 8-10" so the bass may not be as good as you could get, but I don't know why you won't be pleased with these inside and out providing they are being driven by a capable source.
marvin  Jul 20, 2018
I am looking at putting this is an automotive environment with a head unit designed for 4 ohm loads. Since its an 8 ohm speaker what can I expect?
kevin  Mar 26, 2018
1 answer
I don't know what would happen to these speakers if you put them in a vehicle but I have put home speakers in a vehicle before and it's a waste of time they were destroyed pretty fast as far as putting these speakers on a home system they rock well worth the money
jeff  Mar 26, 2018
Can this speaker be used as a center channel speaker in a home theater set up outside?
drew  Jul 15, 2017
5 answers
Drew, I do not know for sure, the Atrium 8 SDI has the two 1in tweeters & center channels do not have any !! So........ I' am thinking the 61/2 woofer in he Atrium 8 SDI would act as a center channel just fine, however i have no idea about the tweeters for center sound quality !! Just a trial & error hook up !! I guess its not alot of help, sorry !! Charles B
brad  Jul 19, 2017
HI Drew -- I have used it in solo and also with two other speakers, though never in a home theater. I use it outdoors for music entertainment only. I can't think of a reason why theater sound would be different than music, but .... I'm not 100% expert. Bottom line -- yes to outdoors and yes with other speakers. -- Paul
paul  Jul 17, 2017
Depending on what you want. It can be used as center speaker. Enter
george  Jul 17, 2017
I have not tried to do that with my speakers but I don't see why not these speakers are loud and clear with a fair amount of bass even if they don't work right for a center speaker you'll have some really awesome speakers
jeff  Jul 17, 2017
I can't see what not. It has great midrange and up frequency response. Enjoy it
philip  Jul 17, 2017

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