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Home / Product Category / SPEAKERS / Ceiling Speakers / 6.5" In-Ceiling Speakers / ACE650 6.5" KevlarŪ Woofer Trimless Thin Bezel 2-Way Ceiling Speaker Pair

ACE650 6.5" KevlarŪ Woofer Trimless Thin Bezel 2-Way Ceiling Speaker Pair

Product code: OSD-ACE650

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OSD Price: $89.95
Compare at: $119.95 You Save: $30.00 (25%)
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Features & Specifications

The ACE650 incorporates premium technologies such as KevlarŪ woofers, pivoting titanium dome tweeters and sophisticated crossovers provide deep bass and exceptional top-end frequency response. KevlarŪ is the best component for woofers. It responds note for note without coloration and has big cranking power so you can dial up your system for higher listening levels.

Step Up Features You'll Love!
· Deep, rich bass and exceptional top-end frequency response
· Sturdy KevlarŪ cone woofer handles high volume levels
· Pivoting aluminum dome tweeter
· Spray paintable grilles to match any décor

Trimless Speakers
The Architectural Ceiling Element (ACE) Trimless Series of ceiling speakers are ideal for new construction or retrofit. These elegant, flush mounted speakers blend effortlessly into any room interior and offer outstanding audio performance. The secret behind these stealthy speakers are the micro flange grilles attached by extremely powerful magnets that stay put for quick and easy installation.

Butyl Rubber Surround
With almost double the shelf life of foam, butyl rubber is the choice of speaker designers. Butyl rubber allows the use of unique cone materials like KevlarŪ and mineral-filled composites. Butyl Rubber also gives the speaker more excursion capability featuring a deeper bass with a wider frequency response, and its shelf life is closer to 25 years compared to the foam at 12 to 15 years.

What Type of Wire and What Gauge?
We recommend OSD Audio CL3/FT4 cable that is UL (fire) rated for in-wall and outdoor speaker installs. This type of cable includes a heavy-duty outer jacket approved for in-wall/in-ceiling installation. The high quality plastic jacket is also very flexible so it's easy to run the wires inside the wall. As for the gauge, for runs up to 100 feet for background music, 16-gauge will be fine. If the run is approaching or exceeding 100 feet, we suggest 14-gauge wire.

For a retrofit installation, no construction bracket is needed.

Please note: Use cut-out diameter according to the bullet point on the website.


Other Product Info

With a look deriving from famous World War II British Spitfire Jets, a new sophisticated crossover and the best component materials available, the MK650 Spitfire Ultra Reference Series are the best ceiling speakers on the market. Premium technologies such as KevlarŪ woofers, pivoting aluminum dome tweeters and sophisticated crossovers provide deep bass and exceptional top-end frequency response. KevlarŪ is the best component for woofers. It responds note for note without coloration and has big cranking power so you can dial up your system for higher listening levels. The contour switches will let you tailor frequency responses to your room arrangement. You won't find yourself wishing for more or less treble, mid-range or bass output from one speaker just because you don't happen to sit right between them.



  View Owner's Manual          


By Stelios from Sweden on November 13, 2012
I want to install these speakers in my living room as surround speakers ( the 2 back/side speakers in a 5.1 setup)

The living room is about 20 feet x 17 feet. Should I step up to the bigger size or will these be just fine?
By Customer Service - Q&A on November 14, 2012

Hi Stelios,
Although the 8" are not much more and you are right on the cusp as far as dimensions to step up -the larger size, the ACE650MK's will give you enough sound for your home theater. However, if you are considering the 8-inch speaker, it wouldn't hurt to go bigger. ACE850MK would be the part number.
CL 1376

By Jerry from Auburndale Florida on January 31, 2012
Is this speaker suitable for exterior use on a covered porch
By Customer Service - Q&A on January 31, 2012

This speaker is not sealed for the elements. The ICE800wrs is though. It is great in bathrooms or covered patios.

By Marius Jul Pettersen from Oslo, Norway on June 14, 2012
Hi! How many speakers do you recomend for a 270sq ft livingroom? Does it provide enough bass or do I need an additional subwoofer?
By Customer Service - Q&A on June 15, 2012

Hi Marius,

You would need a minimum of two pair or four each. I would recommend looking at our new MK690TT speakers. These are dual application speakers that feature Dual Voice Coils and Dual Tweeters. They have a unique 4/8 ohm stereo/mono switch that allows you to connect the speakers as a stereo pair (connecting just one of the voice coils and setting the switch to 4 ohms). Assuming you have room (15 x 18 feet), I would mount each speaker 5-foot from the short wall and 4-foot from the long wall. The beauty of these speakers is the dual tweeters that dramatically increase the dispersion pattern of the high frequencies. I would start there then determine if you want to add a dedicated powered subwoofer like our PS88. Good luck!


By Jim from St. Louis, MO on February 22, 2012
I am trying to decide between these speakers and some ace840. These seem higher quality, but the others are larger... I was going to get 2 sets one for a larger master bedroom 350sq ft ceilings, and another set for a covered deck... what are your recommendations?
By Customer Service - Q&A on February 23, 2012

Hi Jim,

The ACE650MKs are the top of the line and feature KevlarŪ cones, butyl rubber surrounds and an elaborate crossover network. Typically in a bedroom, you want to be able to listen while in bed so a pair of the ACE650 placed 12 feet apart with a speaker mounted above the bed on either side would be ideal, making sure to pivot the tweeter facing down towards the pillows. The ICE840 may be a better choice for outside where you will need a broader sound field. Both speakers are an excellent choice.

I hope that helps

Tim L

Product Reviews

ACE650 6.5" KevlarŪ Woofer Trimless Thin Bezel 2-Way Ceiling Speaker Pair
5 Stars based on 7 Review(s)
Jerry G,
Capitan, NM United States
5 Stars
I would recommend this item to a friend.

Great speaker
January 12, 2017
Bought 6 pairs for a whole house system. used in-wall and they practically disappear. mated with a Russound distribution system and an Onkyo TX-8050 network stereo receiver they sound killer. I spent weeks researching in-wall/ceiling speakers and found that for the quality of construction and material in a "name brand" speaker I would have to pay 3 times more. I only wish that they weren't made in China, but it appears everyone else's are made there too.

Bill Hughes
Central Florida
5 Stars
I would recommend this item to a friend.

Trimless is Timeless
March 6, 2016
Love the trimless design and so did my homeowner who is also a contractor. He said they looked very modern and up to date. Great sound for a 6 1/2.
Best Uses:
Distributed audio in a home

San Diego, CA
5 Stars
I would recommend this item to a friend.

Very Satisfied! Delivered very fast!!!
June 22, 2012
Love hearing my music through your speakers!!
Easy To Set Up, Great Sound Quality, Good Power Output
Best Uses:
Home Theater, Multiple Rooms / Whole House, Home, Basic Systems

5 Stars
I would recommend this item to a friend.

Low cost high-end sound/features
January 1, 2012
Purchased two pair of these with the IW750LCR Trimless Kevlar 7" In Wall Center LCR Speaker "IW750LCR Trimless Center Speaker" used for 5:1 home theater and music (Denon receiver and a 10" sub)in medium size room great sound. If you have been looking at similar 6 1/2 Kevlar this is a great choice, sounds as good or better than some higher-end 6 1/2 and 8 1/2 I was considering. Delivery was fast and well packed.
Good Power Output, Easy to Mount, Attractive Design, Easy To Setup, Great Sound Quality
Best Uses:
Larger Rooms, Smaller Rooms, Home Theater, Multiple Rooms / Whole House, Home

5 Stars

When planning our home ...
March 21, 2011
When planning our home remodelling project my wife and I were addicted to HGTV. As do-it-yourselfer wannabies we took on doubling the size of our home ourselves. When it came to music, we wanted music in every room but didn't want obtrusive bookshelf speakers every where. We settled on a modular sound system that didn't require wiring everything at once but would allow us to portion out the work as our budjet allowed. Suffice to say we have placed many orders with OSD ( We have equipped 3 bedrooms, Kitchen, Patio, Garage and Living room with in ceiling speakers from OSD. We are now working on a Bar and pool room in our basement with 7.1 surround. The main reason I went with OSD in the first place was price, and ease of use of their website. Their website was laid out in a logical manner and I could navigate to what I was looking for in just a couple of clicks. Simple! I first placed a small order for 3 pairs of speakers. I didn't know if they were stealing me blind or what. But I got the speakers long before the sheetrock was up. But when I finally got them hooked up they sounded great. In the process I've had to return some items. It was simple. I called them up, explained that the speakers were too big for where I'd planned to put them and the gave me an RMA

5 Stars

I saw this at OSD's ...
March 21, 2011
I saw this at OSD's showroom when I bought my outdoor rock speaker. I've listened lots of speakers in my life and consider all MK series ceiling inwall speakers excellent products. Bass is strong and highs have depth and good seperation. You can listen to them all day long without hurting your ears. I don't have measurement instrument to measure the phase but from my ears, i can feel they are very corret.

nacogdoches TX
5 Stars

I ordered 5 pair of ...
June 21, 2010
I ordered 5 pair of outdoor and indoor ceiling speakers and a 6 pair volume control. Great products and great service. I will pass their company along to my friends and family.