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🌟 Elevate your outdoor vibe with Polk Atrium 4 — sound that’s as unstoppable as you are!
The Polk Audio Atrium 4 Weatherproof Outdoor Speakers deliver premium 80W high-fidelity sound with deep bass and crisp highs, engineered for small to medium outdoor spaces. Featuring rugged all-weather certification, rustproof materials, and a patented Speed-Lock mounting system, these compact 4.5-inch speakers ensure effortless installation and year-round durability. Compatible with any modern amplifier, they transform patios, decks, and backyards into immersive audio experiences with professional-grade clarity.








| ASIN | B00378KMF0 |
| Additional Features | Bass Boost, Waterproof |
| Antenna Location | For Indoor Use, For Outdoor Use, For Surround Sound Systems |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Surround |
| Best Sellers Rank | #1,664 in Electronics ( See Top 100 in Electronics ) #4 in Outdoor Speakers |
| Brand | Polk Audio |
| Built-In Media | 2 Black all-weather speakers, 2 Mounting brackets (installed), Owner's Manual, Online Product Registration card, Polk Audio brochure |
| Color | Black |
| Compatible Devices | Desktop, Laptop, Television |
| Compatible with Vehicle Type | Car |
| Connectivity Protocol | RCA, XLR, Coaxial, HDMI, USB |
| Connectivity Technology | Ethernet |
| Control Method | Voice |
| Controller Type | Corded Electric |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.6 out of 5 stars 6,004 Reviews |
| Enclosure Material | Metal, Plastic |
| Frequency Response | 25 KHz |
| Global Trade Identification Number | 00747192118792 |
| Impedance | 8 Ohms |
| Is Waterproof | TRUE |
| Item Dimensions D x W x H | 6.69"D x 5.69"W x 8.63"H |
| Item Weight | 3.6 Pounds |
| MP3 player | No |
| Manufacturer | DEI Holdings |
| Model Name | Atrium 4 |
| Model Number | AM4085-A|4 |
| Mounting Type | Wall Mount |
| Number Of Circuits | 1 |
| Number of Audio Channels | 2.0 |
| Number of Items | 2 |
| Power Source | Corded Electric |
| Series Number | 747192118792 |
| Signal-to-Noise Ratio | 89 dB |
| Speaker Maximum Output Power | 80 Watts |
| Speaker Size | 4.5 Inches |
| Speaker Type | Outdoor |
| Specific Uses For Product | Outdoor Use |
| Subwoofer Diameter | 4.25 Inches |
| UPC | 747192118792 |
| Unit Count | 2.0 Count |
| Warranty Description | 2 years parts and labor |
| Warranty Type | Limited |
| Water Resistance Level | Waterproof |
| Wireless Technology | No Wireless Communication Technology |
| 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.
M**D
Buy the good stuff the first time
Selected Polk outdoor speaker after returning less expensive speakers. What a difference the Polk atrium 4 speakers made. Sound quality is fantastic. Install was a breeze. I would highly recommend these speakers. I was very happy with the purchase and so will you. Moral of the story: you get the quality you pay for
N**O
Full, rich and balanced sound from a relatively small speaker!
At their price point, these speakers represent the absolute best value you will find, period. I was in the market for some outdoor speakers to go with a 100 inch projector screen for my terrace. I've been a user of Polk Audio for many years, in fact, my home theater is comprised of polk audio tsi's except for the main speakers which are Bowers and Wilkins. Long story short I'm a fan of more "relaxed" speakers that let you enjoy the sound for longer periods of time without any ear fatigue. Once I decided that a 4 1/2 inch cone would suffice (I'm not trying to start a war with my neighbors here) I pulled the trigger on these. I could not be more happier with my purchase. Paired with my old trusty Denon Receiver in Zone 2, and without any EQ or any crossover for that matter, these speakers have proved themselves to be an absolute bargain. Speaker imaging is spot on with plenty of detail and separation for a nice, ample and defined sound stage that makes the speakers virtually invisible. Contrary to what many have stated, I have found the bass response on these to be more than enough considering their size and the acoustic properties of my terrace (they are mounted to a concrete wall and the area is roofed). You can clearly define all the highs and lows and since its a Polk those tweeters wont be overly aggressive , the only thing you will not get is the earth shattering base that you can achieve by adding a sub to the mix. The speakers can easily fill all my terrace and pool area (40' x 35') with sound without actually having to be loud. Another area where I was pleasantly surprised was with their performance in movies, voices, music and special effects all shine through effortlessly at any volume and yes, they can get VERY loud if you want to push them. So that's that, if your in the market for outdoor speakers I would not hesitate to check these out as long as you provide adequate power with a dedicated amp or receiver you should be good to go. Give them a proper break in and enjoy!
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.
P**8
Rock on!
Not bad - I installed outside on my patio with a Bluetooth 30w amp on the inside. The description says powered. They are wired, but not with any sort of 120v power. I think they sound good. I bought the discounted without original box. Very pleased. Decent bass.
A**R
Awesome outdoor speakers!
I purchased two pairs to bring my large wrap around deck to full sounding glory. I am an audio engineer, so I am expecting a lot from them (at a cheap price). I must say that I am very happy. Of course, a lot of the sound itself is dictated by the amplifier in which you use, where you mount the speakers, and much more. For me, these are perfection. I also purchased a pair of the competing Kicker outdoor speakers. I found that between the 2 pairs of Polks, and the 1 pair of Kicker's - I the Polk have a beautiful clarity that I'm enjoying. No, they are not super bass heavy (no speaker of this size could really reach down to 20hz anyway) but they do have a well balanced range in which I find very pleasing to my tuned ears. In comparison to the Kicker's - I'd say the Polk's have 1 notch up. The Kicker's have more bass, but not as much clarity and definition as the Polk. I'm giving this 5 stars because: The price is fantastic. The sound quality is satisfying and well balanced. The speakers really do project nicely, and the build quality is quite good. I can now drown out the neighbors with ease! haha.. Bottom line is: if you need a good pair of outdoor speakers for a sweet price - these are likely the perfect match well worth considering.
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%!!
F**L
Decent speakers for the price
For years I had Bose speakers on my sailboat but they are now so expensive. I got these and they are holding up well so far and sound good
M**X
recommended
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…
M**N
Pair them with a good Amp and you’re in for a treat!
These really are quite a remarkable pair of speakers when paired with a good quality amplifier! I originally powered them with a Fosi HT4S and they sounded ok but pretty rough in the midrange. Then I tried a Wiim Amp and they sounded much better, nice and refined and balanced but I just had a feeling they could go further. Then I bit the bullet and got a second hand Arcam SA10 and that really brought them to life! Amazing clarity and such great warmth from the Arcam. They are lacking in bass but as they’re the smallest in the range that’s to be expected. I’ve already decided to upgrade to the Atrium 6 and move the 4s to a quieter part of the garden. All in all a fantastic pair of speakers! Great build quality, fantastic sound and easy to fit. Power them with a good quality amplifier and you’re in for a real treat!
G**H
Damaged on delivery
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**S
Great speakers at the right price!
This is my second set of Polk Audio outdoors speakers. My first pair are the Atrium 6s, which are amazing and produce very clear and accurate sound (in my humble opinion). Recognizing that the Atrium 4s are smaller, they still produce very good sound. The mounting system that both speakers use make them very easy to install and wire, and the Atrium 4s worked right out of the box with no fuss. The bass reproduction is good, but not at the same level as the Atrium 6s. Nevertheless, they are quite good at filling small to medium spaces, and they very effectively filled my lower patio area with quality sound. As an aside, these are standard speakers and are not powered so you will need an amplifier or receiver to power them. Both my Atrium 4s and 6s seem very well sealed against the weather elements and they are both holding up very well. I can definitely recommend the Atrium 4s for outdoor installations.
C**S
Muy buenas bocinas, las tengo para Atmos.
Se escuchan muy bien, son el reemplazo de mis bocinas antiguas para Atmos.
Trustpilot
2 months ago
1 month ago