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Home / Product Category / SPEAKERS / Ceiling Speakers / 6.5" In-Ceiling Speakers / ACE640 6.5" Thin Bezel High Definition 2-Way Ceiling Speaker Pair

ACE640 6.5" Thin Bezel High Definition 2-Way Ceiling Speaker Pair

Product code: OSD-ACE640

In Stock
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OSD Price: $59.95
Compare at: $149.95 You Save: $90.00 (60%)
Sold in pairs 1 = 1 pair
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Features & Specifications

The ACE640 ceiling speaker is the trimless version of our most popular ICE640 ceiling speaker. The ACE640 is the best combination of sound and price, it delivers very smooth silk toned music sound with 6.5" decent bass.

ACE (Architectural Ceiling Element) series ceiling speakers combine elegant, modern style with outstanding audio performance. The stealthy micro flange grilles have a thin (0.15") bezel, giving the ACE speakers a clean and sleek appearance that seamlessly integrates into any design space. The ACE Series may be well hidden but the outstanding sound quality will be very obvious. Adds less visual impact on your architectural audio installation.


Other Product Info

What are the benefits of Butyl Rubber Surround?
Much more expensive with almost double the shelf life of foam, butyl rubber has been the choice of speaker designers looking to optimize the sound based upon materials that go together. The Surround is just one of the integral parts of the speaker's motor structure. Butyl rubber allows the use of unique cone materials like Kevlar and mineral-filled composites. Butyl Rubber 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 Gauge Wire Should I Use for my In-ceiling Speakers?
For runs up to 100 feet for background music, 16-gauge will be fine. If the run is approaching or exceeding 100 feet, use 14-gauge wire. OSD Audio offers CL3/FT4 cable that is UL (fire) rated for all residential and most commercial in-wall and in-ceiling applications.

Paint the Grilles for a Custom Touch!
Many of our customers like to paint the grille of their in-ceiling speakers to match their room décor. Painting the grilles/trim won’t harm your speakers but be sure to use spray paint; never a brush. Brushing the grilles can clog the holes and interfere with sound quality. We also recommend using a fine spray paint gun, the inexpensive kind that you can pick up at your local hardware store. Our in-ceiling speakers also come with a paint shield to help guide you.

For a retrofit installation, no construction bracket is needed.

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


  View Owner's Manual          


6 Questions & 6 Answers
from Spring Hill, Florida asked:
June 1, 2018
Can this speaker be used as a center speaker?
1 Answer
Hi Efrain: It is hard to answer this question without knowing what you are planning for your left and right front stage speaker. Your front stage should have the proper timbre match which if possible all three speakers should have the same tweeter and share the same cone material and similar crossovers. Check out the angled in-ceiling speakers which were originally designed for Front stage LCR. The angled speaker allows you to mount the speaker in the ceiling closer to the adjacent wall where your TV/monitor would be mounted. The key is you need to have the tweeter of the speaker facing your optimum seating/viewing area. The Tweeters which outputs the high frequencies are very directional so it is important how they are aimed. A standard in-ceiling speaker (like both the ACE640 and ACE600) has to be placed almost directly overhead of your listening area in order to hear its full range. Note the tweeter of the standard frame, pivots or swivels 5% so you can place the speaker a little in front of your sitting area. But with the angled speaker you have a 15-degree angle plus the extra 5 degrees from the pivoting Tweeter allowing you to place the speaker closer to the TV so you can hear the sound like it is coming from the TV. So check out the ACE670 or even better look at the 8" version the ACE870 for all three of your front stage speakers. Which brings us back to the question "What are you using for your Right and left front speakers. Knowing that will help me look for the best match for your system. Please let me know, Good luck TL/5023
Tim Leahy
on June 4, 2018

from CA asked:
February 12, 2018
what kind of amp should i use with my ACE640 ceiling speaker
1 Answer
Hi Shawn: If you are looking for an amplifier for one or two pairs of these speakers check out the XMP100 (best value) or step up to the AMP200/300 for best sound and most power. Want more than 2 pair, then the AMP200, Speaker Selector and Volume Controls would work. TL/ 4795
Customer Service - Q&A
on February 13, 2018

Allan Baird
from UT asked:
March 27, 2018
Do these come two to a box?
1 Answer
Hi Allan: These are listed packaged as pairs, 2 in a box. TL/4872
Tim Leahy
on April 5, 2018

from Connecticut asked:
December 28, 2012
Can I use these speakers as a wall speakers too.
1 Answer
Hi Mitch, You can install the ACE640 in-ceiling speakers in the wall as well. Choosing round- or rectangular-shaped speakers is a matter of personal preference. Our customers often install wall speakers in the ceiling and vice versa. CL/MA 1496
Customer Service - Q&A
on December 28, 2012

Charlie george
from Burlington,Ma asked:
January 9, 2012
Are they easily mounted in drop ceiling
1 Answer
Hi Charlie, Yes, these are easy to mount in a drop-down ceiling. We would recommend removing the tile, cutting your hole, and mounting the speaker. Then connect the speaker wires as you re-install the tile. TL
Customer Service - Q&A
on January 9, 2012

from wolverinelake mi asked:
November 5, 2011
dothe grillscome off to paint or dye ?
1 Answer
Our grilles are removable and paintable. We wouldn’t suggest dying the surface, however, as the surface of the grille would not absorb the dye well. MA
Customer Service - Q&A
on November 7, 2011

Product Reviews

15 Reviews
73% (11)
27% (4)
0% (0)
0% (0)
0% (0)
53% Recommend this product (8 of 15 responses)
By All ears
January 5, 2013
Great sound
The speakers are for a new entertainment area. I have listened to them uninstalled and they sound good. I expect them to sound even better when I am able to mount them. Then I will be able to give a better review.
ProsAttractive Design, Great Sound Quality
Best UsesHome Theater
By Andwig
Stockholm, Sweden.
February 21, 2012
Great sound!
I use the speakers in the sealing of my kitchen, and connect them to my Sonos system. That works great and the power out in the speakers is better than what I expected.
ProsEasy To Setup, Great Sound Quality, Good Power Output, Easy to Mount, Attractive Design
Best UsesLarger Rooms, Home
By Jon
Isle of man uk
January 8, 2012
Very happy!
Great product good sound and with the discount great price. - I bought 4 pairs and very happy!
ProsAttractive Design, Easy To Setup, Great Sound Quality
Best UsesHome
By Dehn St.John
West Jordan, UT
December 14, 2011
Bought these for 4 rooms in my new house..from a very large 40' x 15' basement family room to a 12'x 12' bedroom. These speakers sound great. I'm running them through a DSM8 Dual Source 8 Zone Speaker Selector and i put a SVC300 Decora Stereo Self-Impedance Matching Heavy Duty Volume Control in each room. everything is powered by an Onkyo receiver. Very happy with the set up!!
ProsEasy to Mount, Great Sound Quality, Attractive Design, Easy To Setup
Best UsesMultiple Rooms / Whole House
November 28, 2011
Great Sound for the price
I installed these in two rooms in my house. One set is in the living area for stereo, tv, and other devices. Overall sound is very good. Bass is very rich and is a huge improvement over the tv speakers. House was prewired, so instal was very easy. 2nd set are in bedroom with separate volume control. Sound is room filling for a bedroom. Only negative is volume is low when running on same zone as living room problem when on separate zone though. I've already recommended these to others. For the money, theses can't be beat.
ProsEasy To Setup, Great Sound Quality, Easy to Mount
Best UsesMultiple Rooms / Whole House, Home, Basic Systems
By Sheepdog
Aurora CO
November 23, 2011
Great Sound out of sight
quick delivery, great sound
ProsGreat Sound Quality, Easy To Setup, Attractive Design, Easy to Mount
Best UsesBasic Systems, Home
By smith_morten
Odense, Denmark
June 27, 2011
Easy installation, great sound
I use the speakers in my kitchen with an class T 2x15 watt amp. Together they deliver great sound at low cost.
ProsAttractive Design, Great Sound Quality, Easy to Mount
Best UsesKitchen, Smaller Rooms, Home
By Summerfun64
Chicago, IL
May 24, 2011
Very Nice Sound & Looks Good
Clear Highs & Smooth Bass
ProsAttractive Design, Easy To Setup, Great Sound Quality, Easy to Mount
Best UsesHome, Home Theater, Multiple Rooms / Whole House
By Anonymous
March 8, 2011
I bought these speakers ...
I bought these speakers on Thursday and they shipped 2 hours later with standard shipping. By the time I got home from work on Monday they had been delivered. Great service
By Leo
Wilmington, Nc
January 13, 2011
I bought a set for my ...
I bought a set for my bathroom and they are great. Best money i have ever spent on speakers. I plan on doing my whole house with these, Thanks OSD!!
By Del
Collinsville, CT
January 24, 2010
I installed these ...
I installed these speakers in my Dining Room and they sound awesome. They sound better than the Bose in my living room.
By Budha
September 16, 2009
SICK Speakers! They are ...
SICK Speakers! They are perfect for the price. This is the second time I bought from this company. And will continue to in the future. "running a 5.1 system powered by denon amp"
By Gary
September 2, 2009
Just installed 2 pair of ...
Just installed 2 pair of these ceiling speakers in a Senior Citizens center. Using them for both background music, and as PA speakers for bingo night. They sound great! It was the first night that no one complained that they could not hear. Easy mounting and great sound. Ordering 2 more pairs today!
By Rick A.
September 1, 2009
I bought two pair. One is ...
I bought two pair. One is the back set in my family room the other is in the kitchen. They were somewhat easy to install and sound great. I am buying another pair for the front family room, which will replace the KLH large floor speakers I have up front now.
By D Kee
July 27, 2009
Received the speakers and ...
Received the speakers and they are fantastic! thank you!