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Ceiling Speakers Pair 8" MK High Fidelity OSD Audio MK850

Product code: OSD-MK850

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OSD Price: $199.95
Compare at: $624.95 You Save: $425.00 (68%)
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

An excellent home theater or whole house audio system begins with in-ceiling speakers that match your performance and price expectations. For customers who are very particular about sound quality, we offer the MK Series In-ceiling speakers with audiophile level components that provide extraordinary detail. Our absolute top-of-the-line, the MK850 is an 8-inch in-ceiling speaker that delivers a new level of performance for its price range. If you're the kind of listener or movie fanatic who hears every little audio detail, this speaker is the right match.

Underneath the Grill
We call the MK our Ultra Reference speakers because of the premium technologies used such as a Kevlar woofer, pivoting aluminum dome tweeter and a sophisticated crossover network. These components combine to provide deep bass and exceptional top-end frequency response. Although attention to quality is a part of all OSD Audio speakers, upgrades in material, such as Kevlar, make a difference in a good, better and best scenario. First developed in the 1960s, Kevlar has a super high strength-to-weight ratio and responds note for note without coloration, even when you crank up the volume. In addition, the MK850 has front-mounted contour switches that allow users to tailor frequency response to their room arrangement, and therefore compensate for wood floors, stone floor, carpet, etc.

Common Applications of the MK Series
With its 8-inch Kevlar woofer and high end components, the MK Series is not for background music. You will hear detail and customers tend to use these in-ceiling speakers in home theaters or listening rooms. The MK850 performs exceptionally well in large home theaters or rooms over 140 square feet. These speakers come complete with mounting templates and instructions and have paintable grilles/frames to match any décor.

For a retrofit installation, no construction bracket is needed.


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 MK850 Spitfire Ultra Reference Series are the best ceiling speakers on the market. Premium technologies such as Kevlar woofers, pivoting aluminum dome tweeters and sophisticated crossovers provide deep bass and exceptional top-end frequency response. Kevlar 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 response to your room arrangement. You won't find yourself wishing for more or less treble, midrange or bass output from one speaker just because you don't happen to sit right between them.



  View Owner's Manual          


11 Questions & 12 Answers
from Washington, DC asked:
February 20, 2012
I just received a pair of these speakers; I can't figure how to remove the cover so I can adjust the bass and treble. The instructions are not detailed enough! Is there a video?
1 Answer
Hi Haisam, We have a how to video on our web site. Go to: Click on videos. There is another way to remove the grill as well. The MK850 is flexible enough before it is mounted to tweak it using your thumbs about five inches apart. Flex the frame pushing down with one thumb and pulling upwards with the other. You will see the grill slowly work its way out. Or you can try using the method highlighted in the video but be carful not to put too much pressure on the mounting ear. Good luck! TL
Customer Service - Q&A
on February 21, 2012

from Atlanta, GA asked:
May 14, 2016
The specs indicate the woofer is 8", but I just received my MK850s and the woofer diameter is 6.5". Did I get the wrong speakers? The overall diameter is just over 10" so I'm a little confused as to why the woofer diameter is so much smaller than advertised.
1 Answer
HI Chris: The cone measurement is from the outside of the surround, not the actual cone. Your speaker should be 10 3/4" from the outer edge of the frame. And the box should be marked MX850. Sorry for confusion TL/3880
Customer Service - Q&A
on May 15, 2016

from Melbourne Australia asked:
November 13, 2014
Hi I'm after a great sounding speaker, 8 inch trimless but you seem to be out of stock. Question, if you paint the grill white, will it match the rest of the unit?\ Also, I require 4 pairs, shipped to Australia. Can you please advise weight and packaging dimensions. I have 4 meter ceilings and am wanting a great, crisp sounding speaker. Is the MK850 a sound choice or are there other recommendations you could make regards Enzo
2 Answers
Hello Enzo, Yes - unfortunately we currently don't have any trimless 8" ceiling speakers, however we do plan on bringing some more in within the next few months. The MK850 is our highest quality 8" ceiling speaker pair at the moment and would be my recommendation. You can indeed paint them, both the grill and the trim around the speaker. Both would need to be painted to match in color as they will both be the same color out of box, which I believe is usually a bit of an off-white.
Customer Service - Q&A
on November 26, 2014
Hello Enzo, Yes - unfortunately we currently don't have any trimless 8" ceiling speakers, however we do plan on bringing some more in within the next few months. The MK850 is our highest quality 8" ceiling speaker pair at the moment and would be my recommendation. You can indeed paint them, both the grill and the trim around the speaker. Both would need to be painted to match in color as they will both be the same color out of box, which I believe is usually a bit of an off-white.
Customer Service - Q&A
on November 26, 2014

from Sweden asked:
September 20, 2014
I like to know if a back box is needed when the speakers are mounted in the ceiling. And what volume is recomended ? Also how would you isolate the box?
1 Answer
Hi Martin, They do not require mounting brackets but you can use the NCCB8-K if you want to.
Customer Service - Q&A
on September 22, 2014

Bert Schmitz
from Toronto, Canada asked:
July 6, 2014
Hi there I am planning to use about 10 of these throughout the new loft. The ceiling cavities are about 18 inches deep ... all ceilings will get drywalled. In some areas the structure is some areas metal open web joist. Would the speakers sound best if they had a wood cabinet around them ?...If so what is the ideal dimensions ? Should some insulation be put in the boxes ? Thanks, Bert
1 Answer
Hi Bert, Great question! They are designed as "open air" speakers, so they don't necessarily need any back box, but that's not to say a back box wouldn't hurt. If you customize a box with good size, you can boost the volume a quality a bit. Typically the box should be about the size of the box that the two speakers are packaged in. It's a box probably about 11 or 12" squared.
Customer Service - Q&A
on July 9, 2014

from St. Louis, MO asked:
September 17, 2013
Thinking of going with the MK850 as a surround speaker due to the difficulty of the set up of my home theater area. I have a soffit that runs the length of my room and projects towards the center of the viewing area by 6'. I basically have a tunnel for a theater with a low ceiling in half of room and then a higher ceiling in the other half. For surrounds I need to mount one speaker in the ceiling and the other could be mounted in the sidewall or ceiling, but ceiling height varies like I mentioned earlier. One speaker would be on a 7' ceiling and the other on an 8' ceiling. Would this be a problem for getting proper sound?
1 Answer
Hi Tim: The key here is figuring where the optimum listening area/position will be located. Either a chair or couch will be you main listing/viewing area. And it is critical that the speaker you pick has to have the tweeter be able to point directly to this designated area. It is optimum to have the speaker located a couple feet behind and to the side of the listening.viewing area. You want them to be about the same distance from the listening area. Checkout the angled in-ceiling speakers the ICE-870 LCR speakers. These will give you a little more flexibility in your mounting locations. They are also a Kevlar cone with excellent sound quality. So try to be equal distant and make sure the tweeter is able to be pointed directly at the listening area. (note the tweeter on both the speaker choices pivots). Good luck TS-2233
Customer Service - Q&A
on October 17, 2013

from h-town asked:
September 11, 2013
how do the MK850 speakers work with an open attic?
1 Answer
Hi Rick, They are open-air designed speakers, so they should do very well. A back box could always help, but is definitely not necessary. Call us if you have any further questions. Thanks! -BM 2211
Customer Service - Q&A
on October 15, 2013

from Swedanb asked:
July 23, 2013
Hi. Will the MK850 work with Sonos Connect Amp? BR Martin
1 Answer
HI BR: Yes the OSD MK-850 are an excellent choice to work with the SONOS Connect Amp TL 2095
Customer Service - Q&A
on August 20, 2013

Matt Briscoe
from Lexington Park, MD asked:
March 6, 2013
Is 200W the RMS or peak power rating?
1 Answer
Hi Matt, The MK850 is a high-end ceiling rated at 200W peak (100W RMS). This is our top of the line 8” speaker which is very popular for home theater and whole house audio. CL/MA 1679
Customer Service - Q&A
on March 6, 2013

from minnesota asked:
November 18, 2011
Hi. I picked up a pair of MK650's and planning on picking up another pair soon for my surround sound system. I will be running a receiver 110watt x 5.1, I don't have a subwoofer right now since I'm on budget. Would this work better than the MK650 as a woofer replacement for now? Also If I was to pick a pair of MK850 up which location should these be placed for better performace? Front left and right or surround left and right? Thanks.
1 Answer
We would recommend picking up the MK670 Angled LCR speaker. The angled LCR speaker was designed for the left, right and center combination for the in-ceiling option. It sounds like you have a center channel already so this would ideal as a right and left channel. Due to the angled design, you can place them in the ceiling closer to the wall where the monitor is mounted. Normal In-ceiling speakers need to be placed almost directly above the seating area due to the limitation of the angle of the standard pivoting tweeter. These also work very well for the actual surround speakers offering more flexibility to where you place them (which should be slightly above and behind the seating area). Regarding your subwoofer issue, the surround sound receiver limits the bass information to the 5 speakers while featuring a dedicate LFE (Low Frequency Effects) output that typically is connected to a Powered Subwoofer. OSD offers an affordable option for a Powered Subwoofer, the S-10. The MK Series LCR speakers sold individually are the best we offer. We also offer an in-wall LCR speaker for the center channel that mounts between two studs in the MK series. TL/MA
Customer Service - Q&A
on November 21, 2011

from Idaho asked:
October 18, 2011
Can these be used outside mounted in a deck overhang?
1 Answer
Yes, these can be mounted in a deck overhang as long as the area behind the speaker is not exposed to the elements. The Grill is powdercoated aluminum and the frame is ABS plastic. We would recommend adding a bead of silicon chaulk between the frame and the ceiling as you install.
Customer Service - Q&A
on October 19, 2011

Product Reviews

11 Reviews
73% (8)
18% (2)
9% (1)
0% (0)
0% (0)
36% Recommend this product (4 of 11 responses)
Irvine, CA
August 9, 2015
Speakers are fine but removing grilles was difficult.
I really have not heard them enough to properly rate sound quality. I am very disappointed with the lack of instructions (including a thorough search of your website) for how to remove the grilles.I eventually figured it out but only after damaging the first grille. Perhaps this is a standard issue with all round ceiling speakers by all manufacturers, but OSD failed to address something that has to be a pain to most users. The grilles are not going back on until I'm positive I have the tweeters pointed as I want them. I sure would appreciate OSD sending me a new grille and a few more of the removal tool which did not hold up well.
By Dennis
Fort Collins CO
June 22, 2013
Great Speakers
I had planned to get the 6.5 inch speakers but they were sold out. After consulting with the very helpful representative on the phone I decided to get the 8 inchers. They arrived in about three days and I could not be happier. They sound great.
By Jody Duran
Aurora Colorado
June 20, 2013
what a great deal for the money and sound great Thanks OSD
By Ron
Buffalo new york
February 3, 2012
Good speakers
I installed a whole house audio system and these speaker sound good and handle the power. I have a 14 year old so they get plenty of use and are turned up most of the time.
ProsEasy To Setup, Easy to Mount, Great Sound Quality
Best UsesMultiple Rooms / Whole House, Home Theater
Brisbane, Queensland, Australia
October 29, 2011
Spitfire MK850 Ultra Reference 8
I have the product to be of good quality easy to install and they arrived well packaged.
ProsBest I have heard but, Attractive Design, Easy to Mount, I purchased these for, Have nailed it, Are good value and, Great Sound Quality, System initial thoughts, They represent good value, Easy To Setup, Quality As rear surround, Effect speakers they, Good Power Output, I won't say they are the, A 51 home theatre
ConsClarity and depth but OK, Speakers they lack the, Compared to my front BW
By Ted
May 8, 2009
Just installed the 3 pair ...
Just installed the 3 pair of MK850s and they are tremendous. Better than my Bose system. I am thoroughly impressed and appreciate you recommending them.
By Monty
April 1, 2009
Love the ...
Love the MK850's--these are the cornerstone of my media room. I have two sets along with the MK650's and could not be happier. These sound as good or better than units costing much more.. These "ROCK!"
By Tillman
March 31, 2009
Great speakers! They are ...
Great speakers! They are a perfect match with my big screen. The sounds are so realistic, I can't see how I ever did without them in the past. These are a must have if youÍre looking at a nice set of speakers. Highly recommend!
By Peter
March 30, 2009
Have had the speakers for ...
Have had the speakers for a little over a week and my first impressions are very favorable. Installation was a snap, the mounting of the units are well thought out and the instructions include the templates to help determine proper location. The sound from these are incredible. I use them for both music as well as part of my surround sound system. The sounds from movies (THX) are tight and accurate. I donÍt have to turn up the volume to get the different sounds from the movies. The speakers are able to handle the various sounds; from music to voices to action effects or background noise effectively. >From a musical aspect, the sound is also impressive. The highs are extremely tight and accurate and surprisingly, even without a subwoofer, the bass is adequate for the majority of the music I listen to. Hooking up a subwoofer adds a new dimension to my previous expectations for in-ceiling systems. I can crank up the volume with very little distortion and am amazed at the clarity of sounds from Art Pepper to Guns n Roses. >From a ñbang for the buckî perspective, one canÍt find a better speaker.
By Bruce
March 23, 2009
Outdoor Speaker Depot are ...
Outdoor Speaker Depot are very easy to get in touch with. They answer the phone, and they know the answers to your questions. Very easy to deal with.
By Eric
February 17, 2009
After trying both ICE850 ...
After trying both ICE850 and MK850 speakers, I pick MK850 as the winner. DonÍt get me wrong that ICE850 is very nice speaker, especially for movie and class music. But MK850 provides noticeable more bass and better crossover. They both are superb speakers but I preferred MK850.