






🌟 Elevate your outdoor vibe with Polk Atrium 4 — sound that’s as unstoppable as your lifestyle!
The Polk Audio Atrium 4 Weatherproof Outdoor Speakers deliver premium, high-fidelity sound with a compact design perfect for patios, decks, and backyards. Featuring a 4.5" dynamic balance woofer and anodized aluminum dome tweeter, these speakers provide clear highs and powerful bass. Engineered with all-weather durability, rustproof materials, and a patented Speed-Lock mounting system, they ensure effortless installation and reliable performance through every season. Ideal for millennials seeking stylish, robust audio solutions that blend seamlessly into any outdoor setting.








| ASIN | B00378KMF0 |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #2,273 in Electronics ( See Top 100 in Electronics ) #1 in Outdoor Speakers |
| Color | Black |
| Compatible Devices | Desktop, Laptop, Television |
| Control Method | Voice |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.5 4.5 out of 5 stars (6,004) |
| Date First Available | February 1, 2010 |
| Global Trade Identification Number | 00747192118792 |
| Impedance | 8 Ohms |
| Included Components | 2 Black all-weather speakers, 2 Mounting brackets (installed), Owner's Manual, Online Product Registration card, Polk Audio brochure |
| Is Discontinued By Manufacturer | No |
| Is Waterproof | TRUE |
| Item Weight | 3.6 pounds |
| Item model number | AM4085-A|4 |
| Manufacturer | DEI Holdings |
| Material | Metal, Plastic |
| Model Name | Atrium 4 |
| Mounting Type | Wall Mount |
| Number Of Circuits | 1 |
| Number of Items | 2 |
| Power Source | Corded Electric |
| Product Dimensions | 6.69"D x 5.69"W x 8.63"H |
| Recommended Uses For Product | For Indoor Use, For Outdoor Use, For Surround Sound Systems |
| Series Number | 747192118792 |
| Set Name | Pair |
| Shape | rectangular prism with rounded edges |
| Signal-to-Noise Ratio | 89 dB |
| Speaker Size | 4.5 Inches |
| Speaker Type | Outdoor |
| Special Feature | Bass Boost, Waterproof |
| Specific Uses For Product | Outdoor Use |
| Style | Atrium 4 |
| Subwoofer Diameter | 4.25 Inches |
| Surround Sound Channel Configuration | 2.0 |
| UPC | 747192118792 |
| Unit Count | 2.0 Count |
| Warranty Type | Limited |
| Water Resistance Level | Waterproof |
| Woofer Diameter | 4.5 Inches |
W**E
Happy with my purchase
I am happy with these speakers. They have a decent range from high to low, a clear sound and will get loud enough to annoy the neighbors. They were easy to install and I like they way they look on my back porch.
D**.
Updated review March 2021
Awesome speakers!!! The sound is super clear and they have great bass for the size as well.......they don't have the super deep bass like an active subwoofer. ....but hey, they're smaller speakers. Perfect for the patio or deck! Not too big and bulky but big enough to sound great!! Quality appears great and you can't beat the mounting system!! Super easy to mount in a variety of positions......and the speaker slips into bracket and stays in place so your hands are free to put the cap screws on the ends and hook the wires up!! The engineers actually did a great job with this system! We mounted them under the soffit on the house above the back deck and they're wired into an older Pioneer receiver with an equalizer. It gets -30f here so we will be removing them for winter just to be safe. At under $100 I don't think you will be able to find better bang for the buck anywhere. Highly recommend!! Update*#*#*11/17 Just finished installing two more pair of these in garage. Wow. What a difference these make in the quality of sound......full sound and very clear. Had a full set of samsung speaker that came with surround system out there. Put these in tonight and all I can say is wow!! What a difference! Will be ordering some more to install near our firepit in back yard. ****update March 2021**** These speakers are still going strong!! Have had hundreds of hours of use and they still sound as good as the first day of use. No problems with the weather at all, had to dust them off last fall, (excess dust in neighborhood from road work over the summer). Still would recommend these 100%!!
S**Y
Decent speakers at a reasonable price.
Product sounds really good. I have a couple Bose speakers in the house, as comparison these speakers are not as bright in sound. They carry a more dominant mid-tone to my ear which is subjective to each person. They have the ability to go pretty loud depending on your receiver and have not distorted. There is a reason they have been in production since 2005. If you are thinking about adding some outdoor speakers but aren’t looking to break the bank, these speakers will not disappoint. I could not be happier with them. My 4 star on the sound is really a preference thing, others may think they are straight up 5. From the install perspective, these speakers come with the mounting bracket, but do not include screws. I used a couple exterior grade screws to fasten to the soffit above my desk. Once the bracket is up, the speakers slide in and then you tighten the cap on either side. Very easy to do (the hard part is running the wires, but that has nothing to do with the speakers themselves). Overall I do rank these as a 5 for value. They are above the quality you might expect for the price point and get the job done. They are a nice set of speakers that should add enjoyment to your outdoor space for years to come.
J**N
Pleased overall
For $100 these are some pretty good overall outdoor speakers. I had a pair of JBL outdoors that developed some buzzing and pops so I needed a replacement and I went with these. For reference, every other speaker I own (except for a pair in the garage) is JBL, this was my first Polk experience. Generally speaking they are a solid set of speakers. They give a pretty balanced sound all around but lack a little fullness in the lower mid-range. This is particularly noticeable when playing orchestral type music like film scores or piano heavy music. Going from the lower mids to bass is where they really start to have trouble. For the size of the speaker I certainly wasn't expecting to really "feel" bass but these do drop off noticeably in the lower frequency ranges. If there's something to knock with the Atrium 4's, that's it. With other types of music (country, rock, etc...) those issues aren't as noticeable. With that said they offer a nice high end treble sound that is pleasing to the ear. Overall the tone is brighter than I generally prefer (all of my JBL's have a warmer tone) but it certainly isn't a deal breaker for me. They don't by any stretch of the imagination sound unpleasant. For our purposes, general entertaining...using them for music outside while we do yard work..., they fit the bill very nicely. For $100 I am overall satisfied with this purchase. If you can afford to, or if a flatter overall response is important, then I'd probably look at something a little more expensive. If you are comfortable giving up some sound quality or if budget is an issue then certainly gives these a serious look. Installing these babies was an absolute breeze. The mounting hardware supplied by Polk is virtually idiot proof. It simply could not be any easier to mount these speakers. The installation deserves 5 stars. The fact that they are virtually weatherproof is also a plus, you can mount them just about anywhere without fear of damage from the elements. One other thing I really liked was the ability to swivel and aim the speakers to exactly where I wanted them (this could not be done with our JBL's these replaced). Power handling has not been an issue for me. I've got them hooked up to a 120 watt receiver and they been flawless to this point even at high volumes. We have a relatively large back yard so it takes some juice to disperse the sound and the Atriums are more than capable of taking it. I'll summarize this way; if you're looking for an inexpensive way to get good quality sound outdoors with something that is ridiculously easy to install then the Atrium 4 deserves strong consideration. If you can afford to get in to an upgraded version then I would probably look in that direction solely for a better bass-lower midrange performance.
M**A
Very good quality speakers
We build an outdoor patio this year. After a ton of research, we decided that speakers like these are better quality than the circle ones that go into the ceiling. We are on 2 acres. These speakers can be heard on our whole property very well. We are more than pleased. We ordered 4.
M**X
Very good sound quality for the price. Paired with a sub provide well balanced sound with a bit of eq. Without the sub the bass are a bit weak…
A**G
Installed in outdoor bar / kitchen. They’re under cover but I wouldn’t put a non outdoor rated speaker outside, even under cover. It isn’t just the rain, it’s the dew and air temp that’s can play havoc with this sort of stuff. Nice sound from the speakers. Perhaps the atrium 5’s would have been better for bass but you can’t knock the sound from these at all. Got them hooked up to a Douk audio amp via a Sonos connect. Sound is really lovely and the speakers are a nice quality.
G**H
Whilst the box was not damaged the speaker grill on 1 speaker had a big dent. Good sound but disappointed that it was damaged.
D**N
Mounted these on my back deck to replace an old pair of speakers that had failed. Very nice clean sound with good bass for their size.
R**H
Las compré para ponerlas como surround en mi AVR, tal vez hasta estén sobradas para eso. Antes, las probé como Segunda Zona y me gustó el sonido; en algún momento sustituiré también mis surround traseras por este modelo. Las volvería a comprar para una segunda zona para ambientar el jardín o en el comedor.
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