Specifications
Speaker TypeIn-CeilingRMS Power75 watts
Key Specs
Speaker TypeIn-CeilingRMS Power75 watts
General
Product NameDI Series 4-1/2" Round In-Ceiling Speaker (Each)BrandDefinitive TechnologyModel NumberDI 4.5RSeriesDisapeeringColorWhiteColor CategoryWhite
Audio
Speaker TypeIn-CeilingEnclosure TypeInfinite baffleRMS Power75 wattsPeak Power Handling150 wattsImpedance8 ohmsMinimum Frequency Response35 hertzMaximum Frequency Response0.03 kilohertzSensitivity88 decibelsHigh Resolution AudioYesTweeter Size0.75 inchesMidrange Size4.5 inchesWoofer Size4.5 inches
Connectivity
Wireless Multi-Room AudioNo
Features
App CompatibleNo
Features
Indoor Or Outdoor UseIndoor
Dimension
Product Height5.4 inchesProduct Width5.38 inchesProduct Depth3.38 inchesProduct Weight2.6 pounds
Material
Tweeter MaterialAluminumMidrange MaterialAluminumWoofer MaterialOther
Included
Cable(s) IncludedNoneSpeaker Wire IncludedNo
Certifications Listings & Approvals
ENERGY STAR CertifiedNo
Warranty
Manufacturer's Warranty - Parts5 yearsManufacturer's Warranty - Labor5 years
Other
UPC093207063749
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.
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.
What's Included
Definitive Technology Disappearing In-Wall Series 4-1/2" In-Wall/In-Ceiling Loudspeaker (1 speaker)
Owner's manual
Wall template, paintable magnetic grille
Search
Q: QuestionHow big is the hole cut out? What is spacing of mounting holes?(0 answers)
Asked by Chris
Definitive Technology - DI Series 4-1/2" Round In-Ceiling Speaker (Each) - White
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Reviews
Rating 4.8 out of 5 stars with 6 reviews
4.8Customers are saying
Customers have good things to say about the DI Series 4-1/2" Round In-Ceiling Speaker. They appreciate the clear sound and the ability to get loud.
This summary was generated by AI based on customer reviews.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Rated 5 out of 5 stars
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.
Posted by Tech0
Rated 5 out of 5 stars
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, obviously get those, but if you can't fit a bigger speaker, these will not disappoint!
Posted by Alex
Rated 5 out of 5 stars
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 ,
Posted by Techman25