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Ceiling Speaker Trimless Pair OSD Audio ACE645

Product code: OSD-ACE645

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OSD Price: $84.50
Compare at: $250.00 You Save: $165.50 (66%)
Sold in pairs 1 = 1 pair
This item is so popular, it is currently out of stock. But don’t worry, we’ll send an email letting you know when it’s back in!
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Features & Specifications

A step up from our most popular ACE640 in-ceiling speaker, the ACE645 ceiling speakers combine elegant, modern style with outstanding audio performance. With power handling up to 150W, features include a 6 1/2" mica-filled polypropylene cone and butyl rubber surround, and 1" silk dome tweeter. The micro-flange grilles have a super thin trim (0.15"), giving the ACE speakers a clean and sleek appearance that seamlessly integrates into any design space. Contour switches let you tailor frequency response to your room arrangement, and these in-ceiling are so discreet you can even match your recessed lighting.

Enhanced silk dome tweeter for better highs

Mica-filled polypropylene cone and butyl rubber surround for added strength

Tailor the sound to your personal taste with contour switches

What kind of speaker cable is needed?
Wiring requirements will depend on your local building codes; however, OSD Audio offers CL3/FT4 cable that is UL (fire) rated for all residential and most commercial in-wall and in-ceiling applications. (The exception is you cannot run this cable in heating or cooling ducts in commercial applications.) This 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.

Can I Test My In-ceiling Speakers before I Install Them?
Sure, many customers like to test the sound quality before they install them. Keep in mind, however, that these flush-mount speakers are designed to be used in the wall or ceiling. Uninstalled in-wall/in-ceiling speakers will sound weak and tinny because without the proper enclosure (in this case your house wall) the speaker can’t produce the sound pressure level it needs. If you want to try them out, we recommend mounting the in-ceiling speakers into a box of about 3 cubic ft. or larger; or simply mount them in the ceiling and then listen. This will give you an accurate measure of the sound quality.

Note: For a retrofit installation, no construction bracket is needed.


Other Product Info

The ACE645 is a step up of our most popular ACE640. With enhanced silk dome tweeter for better highs. ACE (Architectural Ceiling Element) series ceiling speakers combine elegant, modern style with outstanding audio performance. The new micro flange grilles have a thin (0.15") trim, giving the ACE speakers a clean and sleek appearance that seamlessly integrates into any design space. Match your recessed lighting size and you won't even notice that there are speakers there!


  View Owner's Manual          


5 Questions & 6 Answers
from losangeles,california asked:
January 24, 2012
do i need speakers brackets for the new constraction?
1 Answer
Hi Kamran, The new construction brackets are optional. They help during the new construction phase with product placement and provide a little extra stability once the slat wall or ceiling tile has been installed. All of our OSD branded in-wall and in-ceiling speakers utilize a dog-ear mounting system that will work without using the new construction bracket. That way we only stock one speaker that will work for both new construction or retrofit.
Customer Service - Q&A
on January 24, 2012

from New Jersey. asked:
January 17, 2012
do I need rough in mountings for these speakers?Also, do you have a recomendation for rooms with just one speaker? both channels in one.
2 Answers
David, The ICE640TT is the ideal single stereo speaker. It has dual voice coils to connect a stereo signal (right and left). It also features dual tweeters for broader dispersion of the high frequencies. Another bonus is the 8/16-ohm impedance switch. When using the ICE640TT (or ICE840TT, 8" version) as single summed stereo mono speaker, you set the impedance switch to 16 ohm. You can also connect two of the ICE640TT as a stereo pair making sure to set the impedance switch to 8 ohm. You then connect the right input on one speaker and the left input on the second speaker. The advantage is the dual tweeters that give you the larger listening area with the broader dispersion of the higher frequencies. TL
Customer Service - Q&A
on January 19, 2012
David, Our speakers feature dog eared clasps that tighten to the dry wall in a retro-fit design. No bracket is necessary. Regarding a single stereo speaker I would recommend for you the ICE640TT. CL
Customer Service - Q&A
on January 17, 2012

from Canada asked:
December 27, 2011
How far apart should your 6" and 8" speakers be?
1 Answer
Hi Steve, It depends on whether you are listening to these speakers for true stereo separation where you will be sitting in the same location or if they are just for background music. For critical listening we would recommend 6 to 8 feet apart (for both the 6 and 8 inch which have the same tweeter) with the tweeters pivoted at your listening area. Otherwise figure 8 to10 feet apart and you just need to make sure each speaker is at least 3 feet away from the nearest wall. TL/MA
Customer Service - Q&A
on December 27, 2011

from Birmingham, Al. asked:
November 5, 2011
when you order a one pair does that mean your getting 2 speakers or does pair mean the trim and speaker together?
1 Answer
A pair means you’re getting two completer speakers, one for right and one for left stereo output. They are complete with everything you need to install other than speaker wire which we sell separately. The speaker wire needs to be CL3 rated approved for in-wall/in-ceiling application. If you’re running a length of under 80 feet, 16 gauge will work fine. Over 80 feet, we recommend 14 guage, both which are available from OSD. TL/MA
Customer Service - Q&A
on November 7, 2011

from Ankeny, IA asked:
October 19, 2011
Hi this is my first time on this site and this is a grate items. I'm finishing my basement in my new home that we build last year and now I need some speakers, my question is do I need to buy brakets for speakers or I can just put them in driwall? i will need 3 pairs for my basement
1 Answer
Using a new construction bracket helps in both the alignment of the speaker while providing additional support. You will notice the ACE 645 audiophile in-ceiling speaker has a substantial crossover which makes it heavier than your standard in-ceiling speaker. We typically recommend the use of the brackets when you have access to the bare jousts. Model NCCB6 is the recommended Bracket for the ACE645 speaker.
Customer Service - Q&A
on October 20, 2011

Product Reviews

5 Reviews
80% (4)
20% (1)
0% (0)
0% (0)
0% (0)
60% Recommend this product (3 of 5 responses)
By Wldcts
Hernando, MS
December 24, 2011
Better than expected
Bought these speakers to install in a master suite bathroom. Used template on largest opening for first hole and felt the hole was just to big for my liking, the speaker fit but had enough wiggle room where if it wasn't centered of the hole you could see the hole opening partially after installed. Used the smaller opening on the next cut and it fit with out any wiggle room, making install easier. Sound quality is incredible for the price, the louder they are played the better the sound gets. Definitely worth the money. Highly recommended.
ProsGood Power Output, Attractive Design, Easy To Setup, Great Sound Quality
Best UsesMultiple Rooms / Whole House
By Rizz
Washington, Pa.
October 24, 2011
The best speakers in my system
I bought 2 pairs, they are the best speakers in my entire multi room audio system. Highly recommended.
ProsEasy To Setup, Good Power Output, Great Sound Quality, Easy to Mount, Attractive Design
Best UsesMultiple Rooms / Whole House
By Bill
Champaign, IL
June 21, 2011
Good product at a good price.
Easy installation and a nice looking final product. I bought three pairs to spread across two large rooms. The system was just what I had hoped.
ProsAttractive Design, Easy To Setup, Easy to Mount
By Big Joe
Buffalo, NY
January 19, 2010
Great speakers for the ...
Great speakers for the price. I installed them in a 1200 sq. ft. hair salon and the sound is rich and clear. They blend in well with the ceiling. I'd have no problem having them part of my home system.
By Pallpoul
September 8, 2009
I bought 2 pairs ofthese ...
I bought 2 pairs ofthese speakers about 6 months ago from OSD. I INSTALLED THEM IN MY MASTER BED ROOM, RAN THE WIRE AND CUT THE CEILING SHEETROCK, WAS TERRIFIED AT FIRST, BUT I LOCATED THE BEAMS FIRST WITH A CHEAP BEAM LOCATOR FROM WM AT $ 5.99 FOR BEST SOUND PLEASE USE A 16 GAUGE MINIMUM OR THICKER SPEAKER WIRE, IT MAKES A DIFFERENCE. THE SOUND IS CRISP, AND CAN HANDLE MY Pioneer 7-Channel A/V Receiver VSX-919AH-K, WHICH DELIVERS 120 WATTS/CHANNEL. You need a sub, for really rich sounds, unles you also add for front B, like i did on my 7.1 pionner, a pair of polk audio M60 monitors!!! now that is a wow..., I guess the sound could not be richer, and crispier and room filling, ear pleasing.. if you are wondering, weather to buy these; cheap speakers', BELIEVE ME THE POLKAUDIO SOUND IS NOT MUCH BETTER,..YOU WILL GET YOUR MONEY WORTH AND THEN SOME. FINALLY OSD was great,.great shipping and excellent service. i have bought 2 more pairs since: ic 540 for a smaller room, 120 wwats and they too sound excellent.