









🎬 Elevate your space with sound that commands attention and style.
The Definitive Technology Dymension DM40 is a slim, powerful tower speaker featuring four 4.5" long-throw midrange woofers and a custom tweeter, designed with adjustable bipolar arrays for immersive, room-filling sound. Its acoustically optimized cabinet delivers robust bass and crystal-clear midrange, while the sleek, minimalist design fits effortlessly into any modern home theater. Dolby Atmos/DTS:X ready with optional height modules, the DM40 is perfect for millennial professionals seeking a premium audio upgrade that blends performance with sophisticated aesthetics.








| ASIN | B0BT45RRPS |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #175,964 in Electronics ( See Top 100 in Electronics ) #100 in Floorstanding Speakers |
| Color | Black |
| Compatible Devices | Home Theater |
| Control Method | Voice |
| Customer Reviews | 4.3 4.3 out of 5 stars (29) |
| Date First Available | February 22, 2023 |
| Included Components | Speaker |
| Is Discontinued By Manufacturer | No |
| Is Waterproof | False |
| Item Weight | 38.1 pounds |
| Item model number | 300567-01-00-005 |
| Manufacturer | Definitive Technology |
| Material | Aluminum |
| Model Name | DM40 |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Product Dimensions | 10"D x 10.3"W x 37.4"H |
| Recommended Uses For Product | For Surround Sound Systems |
| Shape | rectangular prism |
| Speaker Size | 4.5 Inches |
| Speaker Type | Tower |
| Special Feature | Lightweight |
| Style | DM40 |
| Subwoofer Diameter | 4.5 Inches |
| Surround Sound Channel Configuration | 5 |
| Tweeter Diameter | 1 Inches |
| UPC | 747192137120 |
| Unit Count | 1.0 Count |
| Warranty Type | Tiered |
| Water Resistance Level | Not Water Resistant |
| Wireless Communication Technology | Bluetooth |
| Woofer Diameter | 4.5 Inches |
N**N
Buy them
These speakers are simply amazing. I had a 10” Definitive Technology subwoofer that I was going to hook up to my surround sound system, but it broke. After hooking up these two speakers, I don’t even need the 10” subwoofer. Each tower has a 180 amp 10” woofer integrated into them lol It would be overpowering for my whole system. My couch rattles. I added the Dolby Atmos DM90’s, as well a DM20 Center and the system rocks.
H**Y
definitive has finally lived up to its name
i had a pair of 7004 and i always thought i had a nice system. but man these m60 with a smaller woofer is the bomb. and i got a great price merry xmas to me
M**B
Awesome is what awesome is, I also have the Atmos speakers on top.
Beautiful! Awesome! O wait that's two words. Well worth the purchase. Would do it again, for sure.
D**W
Reliability
Have had these speakers since May and have had the red light blinking on the back. I'm hoping that the amp doesn't go out. I've had a set of the earlier models Tower speakers and one of the amp failed on those so I'm just hoping that the amp doesn't fail on these. Hopefully I unplugged it and reset it and it seems to be working okay now
C**W
Top Quality Speakers.
These speakers are very well built and sound amazing. I went with the small top speakers that plug into the tops of the larger speakers and it makes a difference.
T**G
Amp issues?
I have seen amp failures in some of the reviews for these. I own the DT 9060 towers. I have gone through 2 sets of speakers and 5 amps. I don’t listen to these loud or have bass adjusted high. I’m curious how many people are having amp issues on DT powered towers? It seems as though DT has not figured out the amp problem and if this is the case, I would stay away from these. They do sound great but it is not worth fighting with customer service teams for the life of the speaker.
A**R
Saint Saens organ symphony under Barenboim? Genesis Los Endos? Hear, hear!
After agonzing over what hardware to put into our high vaulted ceiling living room, Amazon's 4th of July sales of DM60s came around and we bit the bullet. I could not have ever imagined how often I would sit on our sofa crying and with goose bumps running all over my body. There are probably many reasonable sound systems that you can get at this price point. But for a large head space room in a woodframe building with hardwood floors for low frequency resonance, the bipolar design seems super ideal. These speakers enable the music to make a stone cry!
D**.
Great Value
Excellent value and sound fantastic. There are perfect if you already have a subwoofer.
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