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Home / Product Category / SPEAKERS / Ceiling Speakers / 8" In-Ceiling Speakers / OSD Audio ACE870 Angled Invisible Trimless LCR Ceiling Speaker with 8" Kevlar® Woofer, Dolby Atmos® Ready (Single Speaker)

OSD Audio ACE870 Angled Invisible Trimless LCR Ceiling Speaker with 8" Kevlar® Woofer, Dolby Atmos® Ready (Single Speaker)

Product code: ACE870

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OSD Price: $149.95
Compare at: $399.95 You Save: $250.00 (63%)
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Features & Specifications

• Trimless grill for modern invisible looking
• A high-end angled ceiling speaker that provides big sound for larger home theaters
• Dolby Atmos-ready for true 3D surround sound
• Angled design allows ideal placement closer to the wall
• Includes a pivoting tweeter for placement flexibility
• 175W power handling capability won’t flinch at high amplification levels
• High-grade Kevlar woofer and heavy-duty magnet for optimum bass
• Includes front-mounted contour switches to tailor bass and treble
• Easy-to-install with included dog-ear brackets and mounting template

There’s a reason our ACE870 has so many rave reviews—customers love the look, sound and power of this heavy-duty Atmos-ready home theater ceiling speaker. Designed for high-end audio systems, larger home theaters or commercial spaces such as bars or restaurants, the ACE870 can handle up to 175 Watts of power so you can push volume levels without any sign of stress. The beauty of the MK870 is in the design. The mid-bass driver is angled at 15 degrees, which gives you more placement flexibility than standard in-ceiling speakers. This makes the MK870 ideal for Dolby Atmos surround sound systems because you can place the speakers in multiple places to create an all-enveloping 3D sound experience.

In addition to crisp, detailed mid and high frequencies, this single ceiling speaker kicks out impressive bass due in part to the 8” Kevlar woofer and heavy-duty and efficient magnet structure that focuses energy within the voice coil gap. Other audiophile features designed into the MK870 include front-mounted contour switches, so you can tailor bass and treble to your preferences as well as butyl rubber surround that gives the speaker more excursion capability for deeper bass and wider frequency response. The MK870 installs easily into ceilings with four easy-to-lock-in dog-eared brackets and includes a cut-out mounting template.

What Are the Advantages of Angled Ceiling Speakers?
In a word—flexibility. Not every room or space is the ideal setup for custom home theater sound applications. When traditional in-wall or on-wall speakers are not practical or even possible, in-ceiling speakers can be a great alternative. The problem with in-ceiling speakers is noticeable in a LCR (front stage) setup, because they need to be installed away from the wall to avoid sound reflection. This can create a disconnect between the screen and the sound coming from the speakers. An angled speaker can be installed closer to the wall, just above the screen, and the speaker assembly can be aimed toward the listening area. The angled design is also ideal for a Dolby Atmos down-firing speaker setup where overhead sound is an essential part of the 3D experience.

What Is Dolby Atmos?
Just when you think that home theater surround sound couldn’t possibly be better, along comes Dolby Atmos. Originally developed for commercial movie theaters, Atmos expands 5.1 and 7.1 surround sound with multiple speakers placed overhead and around the room to create an immersive 3D sound experience. With an Atmos-capable receiver, sound does not have to be assigned to a particular speaker channel (i.e., LCR) but rather individual sounds can be isolated and specified as to where they originate from and where the sound travels (these are called audio objects). The Atmos system plays these objects back within a virtual 3D space and the result is an unforgettable acoustic experience. Sound will seem as though it originates from your room so footsteps feel as though they’re coming toward you. The sound of wind will swoop from across the room, not to mention what a car crash or explosion would sound like. Because overhead sound is a key component of Dolby Atmos, adding in-ceiling speakers such as the MK870 can enhance the sound quality because they can be placed strategically around the room and angled toward the listening area.

What Is Butyl Rubber Surround?
The Surround is just one of the integral parts of the speaker's motor structure, and butyl rubber has been the choice of speaker designers looking to optimize the sound based upon materials that go together. Butyl Rubber gives the speaker more excursion capability, allowing for deeper bass with a wider frequency response, and its shelf life is closer to 25 years compared to the 12 to 15 years of foam. Do I Need Special Cable for In-ceiling speakers? Wiring is not included with the MK870. While wiring requirements will depend on your local building codes, 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, and the high-quality plastic jacket is also very flexible so it's easy to run the wires inside the wall.


Other Product Info

We are shipping the largest and most powerful 9” in-ceiling speakers available in the 8” installed size. It is powerful, high-SPL home theatre solution for those who want sound pressure levels and bass response to rival in their local movie theatre or most expensive box speakers. The industry's first 9" woofer ceiling speaker with the same size housing as the regular 8". Bigger woofer means better bass. The ICE950 and our 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          


By David from TN on January 15, 2013
I'd like to build a back box in the ceiling for the ACE950 speaker. What size box should be built for the ACE950? Thanks.
By Customer Service - Q&A on January 20, 2013

Hi David,

A back box is always a good way to go if you have accessibility and the room for a box. These speakers are designed to work in a wide range of enclosures so it is not critical to have a dedicated enclosure size. So your enclosure size should be roughly double the size of the speaker box it came in. Again you are at the mercy of the ceiling you are installing these in as far as space available. You also might want to pickup some fiber fill (material used for pillows) and use this to tune the speaker once you have built your enclosure. The more fiber fill you add, the more you "fool" the speaker into thinking the enclosure is larger. I hope that helps, feel free to call us for further clarification. There is plenty of information on Google for building enclosures (YouTube as well). Good luck

TL/MA - 1545

By danny from florida on January 16, 2012
any suggestions for a center chanell,ceiling mount speacker
By Customer Service - Q&A on January 16, 2012

At this time we currently don't have an in ceiling center channel. Sometimes its great to do 3 angled for your front and a regular pair for your rear like 3-ICE870's and 1-ICE850 but -in that 9", in the trim less we do not have a matching in ceiling center channel or angled speaker.

By DANNY from florida on January 16, 2012
By Customer Service - Q&A on January 16, 2012

Excellent clear, crisp sound quality with the Kevlar material making up the ACE950. This 9" speaker will not let you down when it comes to bass response either. Defiantly a great choice for serious home theater systems with its trim less design!

Product Reviews

OSD Audio ACE870 Angled Invisible Trimless LCR Ceiling Speaker with 8" Kevlar® Woofer, Dolby Atmos® Ready (Single Speaker)
5 Stars based on 2 Review(s)
Freeport , New York
5 Stars
I would recommend this item to a friend.

February 10, 2013
These speakers sounded so good that once I heard them play in my main room I ordered a third pair for my kitchen and threw out my Bose speakers.... That is how good they are... Full range and crisp at any sound level!
Easy to Mount, Great Sound Quality, Easy To Set Up, Good Power Output, Attractive Design
Best Uses:
Multiple Rooms / Whole House, Home Theater, Larger Rooms

Cerritos, CA
5 Stars

Comparing this speaker ...
February 2, 2010
Comparing this speaker with Speakercraft AIM 10 speaker, the fit & finish is excellent, all made of high quality materials. I like the Kevlar woofer which produce clean powerful bass, the contour switch really have good + and _ db effect when you adjust it. I replace my NHT tower speaker with a pair of ACE950 and I canÍt tell the difference either listening to music or watching movies. Also the price is just unbelievable, the AIM10 speaker is $1500 a pair.