Mobile Navigation
My Account


Call for Support

Ceiling Speakers Pair OSD Audio MK840

Product code: OSD-MK840

Out of Stock
OSD Price: $149.95
Compare at: $315.00 You Save: $165.05 (52%)
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!
30-Day Money Back Guarantee

Features & Specifications

If you're looking to build a killer home theater that won't kill your budget, the MK840 speaker pair is an excellent choice. This ceiling speaker design includes an 8” polypropylene cone woofer with a pivoting 1" titanium tweeter for solid bass, mid-range and highs. In addition, contour switches let you tailor the sound to suit your music and surround sound tastes. The contour switches let you tailor frequency responses to your room arrangement.

Is an 8-inch In-Ceiling the Right Size for You?
For rooms larger than 140 square feet, an 8" in-ceiling speaker is an excellent choice. The 8” cone delivers excellent frequency response (the range of musical tones a speaker can produce); plus, bass response or the ability of a speaker to crank out those low notes is vastly better than small cone sizes. An 8-inch speaker can be used in home theaters and distributed audio, which is where an 8-inch cone shines. After all, with whole house audio systems you can't add separate subwoofers all over the house so the added bass really makes a difference in sound quality.

What about Wiring?
Wiring is not included so you will need to purchase some. You should always follow your local building codes, but we do offer CL3/FT4 cable that is UL (fire) rated for all residential and most commercial in-wall and in-ceiling applications. This cable includes a heavy-duty outer jacket approved for in-wall/in-ceiling installation. It's very flexible as well which makes it easier to snake through the wall and ceiling rafters.

For a retrofit installation, no construction bracket is needed.


Other Product Info

With a design like pivoting 1" titanium tweeters and contour switches, the MK840 is the best 8" ceiling speaker for music listening.



  View Owner's Manual          


1 Question & 1 Answer
Steve Heeg
from Sioux Falls, SD asked:
January 31, 2015
is this speaker ok to put out in a screen in outdoor patio..?
1 Answer
Hi Steve: As long as it is not exposed to the elements and you use silicone around the hole when you are installing the speaker you should have no problems. TL/3123
Customer Service - Q&A
on February 4, 2015

Product Reviews

10 Reviews
90% (9)
10% (1)
0% (0)
0% (0)
0% (0)
50% Recommend this product (5 of 10 responses)
By Mingo
Phoenix AZ
September 5, 2013
Good buy
This was my first purchase from OSD and it was great. Speakers installed quickly and sound great.
By TraumaDude
Cincinnati, Ohio
August 10, 2013
My neighbors hate OSD!
These speakers rock! I run them bridged through an amp that provides 150W. I bought four and they fill a 600 square foot space with plenty of great sound. They sound clear and pump out a lot of volume and good bass. I couldn't be happier.
By Wayne Tait
June 8, 2013
nice company, I ordered 2:00 in afternoon, and the package was at my door the next morning. I don't know how they did that. Super quality speakers. Thanks much! Wayne
By Scott
Kansas City
May 21, 2013
Speakers sounds great
Installation was easy and the quality and sound of the speakers are great.
By Adhall
January 7, 2013
What I expected from OSD
Perfect sound in my 12x12 bar.
ProsGreat Sound Quality, Good Power Output, Easy To Set Up, Easy to Mount, Attractive Design
By ray
June 26, 2010
After installing the ...
After installing the ICE645s and CL66 in my theater room, i was so pleased with the sound, quality and customer service that i decided to order a pair of MK840s for my living room and a pair for the master bedroom. i have had them for a couple of months now and they continue to impress. They sound really nice at both high and low volumes. Surprisingly, the bass output is pretty good also. Delivery took about 3 business days. Unfortunately, when i received the speakers, one of them was damaged. OSD immediately sent me another one without asking a million questions. In my opinion, OSD continues to offer the best values and best customer service on the internet.
By ed
wayne, nj
December 29, 2009
great speakers, great ...
great speakers, great sound. love them
By Bill
April 13, 2009
I ordered these speakers ...
I ordered these speakers because I purchaced deck speakers last year. I read the reviews on the deck speakers and simply believed I would have to send them back because it sounded too good to be true. Needless to say, they are incredible. You can hear the full sound at the lowest volume very clearly. So, being so impressed with those, I ordered the wall speakers and they too are just incredible for the price. Do exactly what I expected and more. Simple to install, deliver beautiful sound. This is one of those rare finds that you get more than you pay for. Fast shipping, excellent packing, and clearly a value about expectations.
By William F.
April 13, 2009
I was pleased with the ...
I was pleased with the entire process. I now have great speakers in my kitchen/family room.
By Sherry Anderson
February 27, 2009
This is a fantastic ...
This is a fantastic speaker. Sound in the room was greatly enhanced after installation. Very pleased.