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The DI Series feature Definitive Technology's most advanced technologies such as BDSS drivers and pivoting Pure Aluminum dome tweeters for spectacular audio performance far beyond traditional flush-mount speakers. Definitive’s exclusive Balanced Dual Surround System (BDSS) driver technology permits these new flush mounts to deliver more bass output and dynamic range than larger drivers. For example, the 4-1/2" driver-based model has the bass and dynamics of a 5-1/4" traditional speaker, while the 5-1/4" performs like a traditional 6-1/2". Pure Aluminum dome tweeter featuring a specially shaped housing that avoids the diffraction distortions of traditional post mounted tweeters, and a sophisticated adjustable crossover network, the DI Series delivers the kind of lifelike sonic performance and broad even dispersion that you've come to expect from Definitive Technology.
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Shipping & Returns
Shipping & Returns
Most orders ship within a few business days — you will get tracking by email as soon as it is on the way. Questions about a delivery or a return? Reach our US-based team at info@improvemintfinancial.com or (855) 447-4921.
Highlights
- Speaker Type : In-Ceiling , see in specifications
- Minimum Frequency Response : 35Hz , see in specifications
- Maximum Frequency Response : 0.03 kHz , see in specifications
- Impedance : 8 ohms , see in specifications
- Number of Speakers : 1 , see in specifications
- Peak Power Handling : 150 W , see in specifications
- Sensitivity : 88 dB , see in specifications
- RMS Power : 75 W , see in specifications
Specifications
General
| Brand | Definitive Technology |
|---|---|
| Model Number | DI 4.5R |
| Product Name | DI Series 4-1/2" Round In-Ceiling Speaker (Each) |
| Product Width | 5.38 inches |
| Product Depth | 3.38 inches |
| Product Height | 5.4 inches |
| Product Weight | 2.6 pounds |
All specifications (32)
Key specs
| High Resolution Audio | Yes |
|---|---|
| Wireless Multi-Room Audio | No |
| Color | White |
| App Compatible | No |
| Maximum Frequency Response | 0.03 kilohertz |
| Speaker Type | In-Ceiling |
| RMS Power | 75 watts |
| Speaker Wire Included | No |
| Enclosure Type | Infinite baffle |
Other
| Peak Power Handling | 150 watts |
|---|---|
| Impedance | 8 ohms |
| Minimum Frequency Response | 35 hertz |
| Sensitivity | 88 decibels |
| Number of Speakers | 1 |
| Number of Tweeters | 0 |
| Tweeter Size | 0.75 inches |
| Number of Midranges | 0 |
| Midrange Size | 4.5 inches |
| Number of Drivers | 0 |
| Number of Woofers | 0 |
| Woofer Size | 4.5 inches |
| Indoor Or Outdoor Use | Indoor |
| Mounting Dimensions | 4.5 Cut out diameter |
| Cable(s) Included | None |
| ENERGY STAR Certified | No |
Features
- 4-1/2" BDSS mid/woofer Delivers clear, vivid sound and features an AeroRing surround to optimize sonic dispersion. The pivoting 3/4" aluminum-dome tweeter creates brilliant highs.
- Flangeless design Plus a microperforated grille provides a sleek, minimal look.
- Axially aligned design Ensures a wide, balanced coverage area.
- Adjustable high-definition crossover Along with an environmental EQ switch lets you easily adjust the sound to suit your preferences.
- Heavy-duty, spring-loaded inputs Enable simple, secure connection.
Customer reviews
4.7
out of 5
7 customer reviews
Most recent 6 reviews
-
Definitive Tech. 4 1/2” Ceiling Speakers
Pretty good considering how small they are. Look super slick in the ceiling.
-
Nice sound
Worked out great for surround sound. The fit in small ceiling space.
-
Did not expect these speakers to sound so great!
I bought 2 of these speakers to use as in-wall surround speakers in a 5.1.4 setup. These speakers sound great as surround speakers, but sound even better when playing music. During parties I set my Denon AVR-x6700h to all channel stereo and these little speakers play loud and clear. I wanted to get the 6.5r speakers, but unfortunately they did not fit in the area I wanted them because of stud placement. I bought the 4.5R because that is all I could fit, but was very pleasantly surprised when I heard out good these little speakers sound! If you have the room for the 6.5” or 8.5” speakers,…
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Thumbs up
Great price for the sound. Clear sound, gets loud.
-
Height speaker
Needed a pair of height speakers to round out my front soundstage , came upon these small Def tech with pivoting tweeters and was amazed of how wide the dispersion was for such a small drivers . Fit the bill very nicely ,
-
Yes, They disappear.
I bought these for overhead speakers for an Atmos set up. I didn’t want to clutter up my ceiling with noticeable speakers and these were the smallest I could find. I wasn’t loving the fact they aren’t the same brand as the rest of my speakers but those would have been 2x as big. I didn’t have the appetite for that, esp for basically sound effect speakers. Installed, they look tiny on the ceiling, but do not sound tinny. When sound is directed to them you can’t even tell they are coming from the speaker. The sound is well distributed and matches my other speakers well enough.
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