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Home / Product Category / SPEAKERS / Outdoor Speakers / Omni 360° Surround Speakers / OS850 High Definition Omni 8" Two-Way Outdoor Ground Speaker (8 Ohms/Optional 70V Single)

OS850 High Definition Omni 8" Two-Way Outdoor Ground Speaker (8 Ohms/Optional 70V Single)

Product code: OSD-OS850-70V

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OSD Price: $299.99
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Features & Specifications

If you want the best omni speaker on the market, the OS850 is the one! We designed this outdoor ground speaker with fiberglass, not ABS plastic, for even better sound quality. This sturdy omni ground speaker is tough and includes a weatherproof 8" down-firing polypypropylene woofer that cannot collect condensation or dust. A new molded tweeter and woofer combo delivers smooth indoor quality sound and broader dynamic range for outdoor use, while the large weather-resistant port adds efficiency and additional 6dB of bass output. Installation is easy. Add one or even two for full, 360 degrees of beautiful sound in your backyard.

What Is an Omni Speaker?
Popular with landscape professionals and audio contractors, omni speakers offer omni-directional, 360° surround sound with no obstructions. If there are multiple people scattered in different areas, the sound is consistent, not mixed. This feature plus the durable nature of the Omni make it a popular speaker for theme parks, hotels, and resorts; however, omnis are also quite common for residential use.

Should I bury my omni speaker to get better sound?
You don't have to bury your Omni speakers but it will enhance sound quality and here's why. The sound comes out of the "mushroom cap" on top of the speaker. When you bury the omni (a few inches above the grille), the sound has a surface to bounce off of--the ground acts like a tuned baffle!

What kind of amplification do I need?
The OS850 is a passive speaker, meaning it will require power from an amplifier or receiver. This speaker has high power handling so you'll want to pair it with an amp that can handle 300W. We suggest our AMP300 high current amp to get the best sound performance from your new omni speaker.

Please call for 70v Version


Other Product Info

If you want the best omni speaker in the market, this high definition garden omni 360 degree in ground speaker, designed for theme parks, hotels, or any architecturally landscaped area, simplify installation and deliver deep, rich and clear sound. This omni speaker is a 8” woofer cone with rubber surround, 1.5” mylar dome tweeter with 2 step crossover design for audiophile application.
This garden speakers are designed to blend into any environment which can be used for in-landscape burial. The enclosure is not made by ABS plastics like other omni speakers in the market. We all know ABS can have resonance that can't produce tight bass. We actually design this speaker using the same materials making our rock speakers (reinforced resin fiber glass). The result is a deep clean and tight bass that no other omni speaker in the market can produce. This advance USA engineering design ensures performance in even the most temperamental and unpredictable climates.



  View Owner's Manual            Product Information


24 Questions & 25 Answers
John Goertzen
from Salina Kansas asked:
September 6, 2019
I have 2 OS850 speakers powered by an Amp300. I’ve owned this system for about 4 years and everything has worked great. Incredible sound and no problems until this year. All of a sudden the amp cuts out on the left channel which requires a tap to the side of the amp to remedy temporarily and now the speaker on the left channel has static as if it is “blown”. What are some troubleshooting options? Is there repair options?

2 Answers
Hi Jon:

The first thing is to test the Left speaker on the Right channel output to see if it sounds blown. Then I would find a local repair shop to look at your AMP300; I will send you the schematics for the AMP200/AMP300, they have the same basic design. We do not repair units in our Brea Warehouse. We will offer you a loyalty Replacement discount if you want to replace the AMP300 or switch to our newer Class D XMP300 both have identical specs. The XMP300 is a smaller package with a 93% efficient Power Supply.


Submitted by: Tim Leahy on September 19, 2019
Hi John:

The first thing I would do is switch the Left speaker to the right speaker output to see if the speaker is good. Then you need to make a decision to replace or repair the AMP300. I located a shop that might be able to help but they are located in Overland Park.

Contact Rescue Link

Phone Number

(866) 588-5617


8880 Ward Pkwy

Kansas City, MO


I have sent you schematics directly to your email address just in case you look into repairing the AMP300.

Good luck


Submitted by: Tim Leahy on September 18, 2019

Jeff Lambert
from Henderson, NV asked:
May 24, 2019
Are the OS850 sold in pairs like Bose?  I don't see that that actually say these are priced as pairs? I need two pair so I'm wanting to make sure before ordering.  

Thank you,

Jeff Lambert

1 Answer
Hi Jeff:

I am sorry for the confusion; the OS850 is not listed as a pair but as a single piece price.


Submitted by: Tim Leahy on May 28, 2019

Bruce Carmichael
from San Marcos, CA asked:
February 24, 2019
I am going to buy the new sonos amp at 125 watts per amp. Going to connect only two os850s to it will there be an problems. I am buying for speaker but will use a separate amp for both.
1 Answer
Hi Bruce: I am assuming you are connecting a pair of the OS850 speakers to a single SONOS Amp. Just make sure all the speakers are 8 ohms. The OS850 are priced as each. It features (+/- mono) connection. Your SONOS amplifier has a right and left stereo connection. It does not have a stereo/mono option like some of there Smart speakers. Good match TL/5430
Submitted by: Tim Leahy on February 27, 2019

from Northern Indiana asked:
December 23, 2017
Thinking of using a Crown PS-400 to drive these. Your opinion? Also how do these compare to Stereo Stone 250W Commercial grade stealth rock speakers?
1 Answer
HI Dux: I believe the OS-850 speaker is a true omni speaker with a unique 360 degree design. It has a built in 70V Transformer for 70V or can be connected 8 ohm. You could easily power two pair with the CROWN amp for a 4 ohm stereo load. Or run all four in mono 70V. Excellent choice. And I believe could be half the price of the Stereostone. Good luck TL/4709
Submitted by: Customer Service - Q&A on December 24, 2017

from MD asked:
June 8, 2017
How does this speaker compare to the Bose Free Space 51?
1 Answer
Hi Dave: Bose is an amazing marketing company. The Free Space 51 is an amazing speaker. But try finding a Frequency Response for a speaker featuring a 4.5" full range driver. It would be lucky to produce below 120 Hz, and no Tweeter probably means a cut off at 16 kHz. The speaker is rated at 50W continuous with peaks of 100 watts as well so lets look at the OS 850. The OS 850 features an 8 inch 2 way coaxial design with a Frequency Range of 38 Hz to 20 kHz. So it actually plays a full range signal with some pretty good bottom end. It also has a sensitivity rating of 90 dB, of course BOSE does not list this spec either. 90 dB means the speaker is very efficient and does not need much power to drive it to full output. Did I mention this speaker is rated at 300 watts as well. The enclosure itself is 4 inches taller and an inch wider diameter. Plus this speaker is commercial grade and features an optional internal 70 Volt Transformer with five settings. We sell as many of the speakers for commercial as residential. Great bang for the buck. As far as the comparison, there is no comparison. The OS 850 should be selling for much more making it an even greater value. TL/4414
Submitted by: Customer Service - Q&A on June 10, 2017

from Shady Side, MD asked:
September 28, 2017
I am going to use this product, probably 4 for my patio/pool. I want to drive them with Sonos Connect AMP. With Sonos saying their device will do 55 W per channel at 8 Ohms. Will that work for these speakers, if not do you have a similar speaker that would work? Thanks.
1 Answer
Hi Evan: The SONOS Connect Amplifier has a right and left output and is rated at 55 W at 8 ohm. It does not give a 4 ohm spec so they do not recommend connecting 2 pair of speakers which would create a 4 ohm load. It is not the speakers you have to worry about. I would suggest going with SONOS Connect and purchasing our XMP100 amplifier which has both an A and B output and will run at a 4 ohm load. But don't take my word for it contact SONOS and ask them about connecting any two pair of speakers. Note the OS850 are rated at 90 dB sensitivity which means they are very efficient and do not need alot of power. The higher the sensitivity the more efficient. 3dB is doubling the power; so 87dB would need double the power. TL/4570
Submitted by: Customer Service - Q&A on October 3, 2017

Le Le
from Phoenix, AZ asked:
May 28, 2017
Hi, I'm in the process of moving to a new house and looking to get some Omni speakers. I currently have 4 OS800 speakers in my yard which has a pool centrally located. I'm looking to get a set of OS850 speakers. The yard is about 50ft deep from the house and about 115ft wide. Would 3 of these speakers be enough or should I get 4? And what's the best location? I've included a few pictures of the planned yard. Thanks for your help. Le
1 Answer
Hi Le Le: Have you decided which pool design you like the best? To best answer your question I would like to know a little more about your whole system. Are you planning a 70V or 8 ohm setup. Mono or stereo. I see the potential to place Patio speakers under the Barbecue structure. You can contact me directly at TL/4388
Submitted by: Customer Service - Q&A on May 30, 2017

from greensboro, NC asked:
March 3, 2017
I have 2 RS690 rock speakers on one side of a patio. I would like to put 1 OS 850 in the garden in the middle and 2 RS690 rock speakers on the other end of the patio. The patio is 20' x 54'. These speakers run through a splitter into a receiver. each pair has volume control.
1 Answer
Hi Charlie: Based upon what you are telling me you have a Speaker Selector (your term splitter) and volume controls for each pair of speakers so far 2 pair RS 690. You want to add a single OS 850 Omni speaker which presents a problem since it has only one input. I am assuming you have another stereo output (R&L +/-) to run to the garden in the center of your patio. You really need a stereo Dual Voice Coil speaker that has aright and left stereo input but only a single DVC woofer and two tweeters (one for right and the second for left). Something like our RS 690TT Dual Voice Coil Rock Speaker. You can connect a Volume Control to this speaker as well whether it is a stand alone Volume Control or one built into the Speaker Selector. The DVC was made for this type of application where you want to connect a stereo signal but only space for a single speaker. You will notice the tweeters are 180 degrees apart. TL/4240
Submitted by: Customer Service - Q&A on March 6, 2017

from Philadelphia, PA asked:
May 9, 2016
Hello - exactly how deep should these be buried? The manual doesn't actually say, it just tells you how large a hole to dig. Do you bury the entire bottom part? Higher? Thanks in advance.
1 Answer
Hi Mike: The idea is to bury the speaker up to the opening where the sound comes out so you use the ground as a natural baffle creating a loading effect. You certainly can experiment to see if it creates any difference for you application, so dig a hole deep enough to so the opening is ground level. If your satisfied with the effect then leave it. If your curious you can try filling in so the opening is a couple of inches above ground level and see if you hear a difference. It may also make a difference with what you have planted around the speaker. Good Luck TL/3867
Submitted by: Customer Service - Q&A on May 10, 2016

from Philadelphia, PA asked:
April 6, 2016
Hello, I have quite a large outside space that I need to fill and am wondering in how large a circle these can be heard? I'm thinking 4 speakers, but want to make sure I've got enough coverage. If 4, what would you recommend to drive them? If I needed more than 4, what might be an optimal setup? New to the outdoor speaker world and trying to get it right. Thanks!! Mike
1 Answer
Hi Mike: What is the size and is there structures or maybe a pool involved. If you can email us a rough outline including dimensions we could design something more elaborate and give a diagram and suggestions for you particular application. We have plenty of options. TL/3800
Submitted by: Customer Service - Q&A on April 7, 2016

from Montville nj asked:
June 21, 2015
I own two OSD 850. I was looking to get 2 more. However they are now discontinued..Does the replacement ( osd 790) contain the same speakers.
1 Answer
Hi Raj, The OS850 are coming back! They will probably be here in about a month to a month and a half. The OS790 has an 8" woofer as well, but is slightly less powerful.
Submitted by: Customer Service - Q&A on June 23, 2015

from New Hampshire asked:
March 11, 2014
I would like to purchase a set of these, however I'd like to know if I need to pair with an outdoor sub (Sub200) for the bass. How does the 850 deal with bass outside? Does it need a supplement?
1 Answer
Hi Kris, The OS850s produce a good amount of bass on their own, but if you would like to add more then pairing them with an outdoor sub would be a smart choice. CS 2533
Submitted by: Customer Service - Q&A on March 11, 2014

from new jersey asked:
September 4, 2013
are these a suitable replacement to a weathercraft ws 710 speaker? I currently have four installed in my yard most of them pole mounted ( one needs to be moved to the ground inasmuch as the pole and speaker were damaged when a tree was removed) do they need to be installed as a pair? The current speakers are two wire speakers
1 Answer
HI Rich: Not sure the OS-850 is a good match to your WS-710 speaker. The OS-850 is an 8.0" 2 way speaker versus the 5.25" 2 way of the WS-710. It does have the two wire connection as well (+/-). A closer match might be the RS660M Omni Rock Speaker which is a 6.5" 2 way with the same efficiency 90dB. It is available as each as well and comes in four different color choices. TS-2195
Submitted by: Customer Service - Q&A on October 17, 2013

from Orlando, Florida asked:
December 10, 2012
I bought 4 speakers OS850 however they do not sound clear. I am using a receiver Onkyo TX - NR616. I also bought an Amplifier MX1260 but I did not install yet. My question will be how to install the amp using the receiver? Plus I am worried that just using the receiver the speaker is not sounding right... imagine with the amp... Any help before I think that these speaker do not perform right?
1 Answer
Hi Claudio, We need to know what other components you were planning to use with the MX1260 multi-channel amp. Assuming it would be used for more than the four OS-850 omni speakers, we suggest connecting the MX1260 to the Zone 2 Pre-amp output of the Onkyo NR616 to the Buss 1 input. You could connect all four of the OS-850 to channels 1, 2, 3 and 4 of the MX1260. Set the switch for Zone 1 and 2 to ST or Stereo. Then make sure the input switch is set to Buss #1 for all four speakers. Then connect the first speaker to the left output of channel 1 and the second speaker to the right channel. Repeat for the third and fourth speaker from Zone 2 (channel 3 & 4). Make sure to adjust the gain control for each speaker to about half way. Now you will be able to hear all four speakers and see if the sound quality is isolated to one or all of the speakers. TL/MA 1459
Submitted by: Customer Service - Q&A on December 11, 2012

from Arcadia, ca asked:
August 3, 2012
I have a four speaker system, presently 3 GS3s that are installed in our landscape, and one small 6" RCA 50w speaker that I move around. I have had troubles with the GS3s (one "died", and one seems unable to produce anything by very low sound levels...but one is very good)). So now my thought is to purchase 2 OS850's and "match" them with my remaining GS3 and that workable? Thanks
1 Answer
Hi Bill: Yes the OS850 can be used to replace the LS3 (I am assuming these are the speaker you were referring to). I am curious about your system. What are you using for the source, are you using either volume controls or a speaker selector. Are you using a Receiver or amplifier (would like to know including make an model of all your components). Are the LS3 still under warranty, maybe we can figure what went wrong with the LS3's. TL
Submitted by: Customer Service - Q&A on August 8, 2012

from Arcadia, asked:
August 3, 2012
I have a four speaker system, presently 3 GS3s that are installed in our landscape, and one small 6" RCA 50w speaker that I move around. I have had troubles with the GS3s (one "died", and one seems unable to produce anything by very low sound levels...but one is very good)). So now my thought is to purchase 2 OS850's and "match" them with my remaining GS3 and that workable? Thanks
1 Answer
Hi Bill: I am assuming you are referring to the LS3 speakers. Can you tell us how you have your system wired. It sounds like you are running everything in mono. It would help to know what sources you are using as well. Are you utilizing any Volume Controls or Speaker Selector? Bottom line the OS-850 speakers can replace the LS3 speakers and will provide a much more open and louder sound. Knowing your setup will help me understand better. How old are the LS3, are they still under warranty? TL
Submitted by: Customer Service - Q&A on August 8, 2012

from Great Neck, NY asked:
July 29, 2012
Does this speaker require a 2-wire or 4-wire connection?
1 Answer
Bob, This would take the standard 2 conductor. CL
Submitted by: Customer Service - Q&A on July 30, 2012

from Montreal, CANADA asked:
July 2, 2012
After looking around quite a bit, I think I'm sold on a pair of OS850 speakers. The reviews on these seem to be very good. What kind of power source would work best with these? I would like to connect an ipod and stream satellite radio thru them. I do have a 'boom box' type radio but I'm not sure they will work properly with it?! What would you recommend? Thanks.
1 Answer
hi tim Hi Mike, We recommend our AMP200 that features audiophile quality sound and automatic source switching so you can connect both your iPod and stream satellite radio. What ever you connect to input #1 takes priority while that source is active. When you turn it off, Input #2 becomes active (between 3 to 15 seconds after shutting your #1 source off; there is knob that varies the delay). We also offer CL3-rated speaker wire approved for both in-wall applications as well as direct burial. Terminate the OS850 with our Aqua-Blue connectors and you will be set. The OS850 connects to the Speaker A output, and you still have Speaker B to connect additional speakers as well. Note that the AMP200 is a High Current model that features a 2-ohm rating. If you have the room or need, you could easily connect two pair of the OS850 speakers in parallel (creating a 4-ohm load) and the amp would have no problems playing as long and as loud as you want. TL/MA
Submitted by: Customer Service - Q&A on July 3, 2012

from Las Vegas, NV asked:
June 15, 2012
I'm looking for 37 of the OS850. Do you have them in stock and would this be the best price i could get. We are a reseller.
1 Answer
Hi Lisa: We have ample stock of the 8 ohm version. Less than 37 of our transformer 70V version. Please call me at 562-697-2600 (ext 110) or email me at tim@osdaudio so I can discuss further. TL
Submitted by: Customer Service - Q&A on June 15, 2012

David J
from Phoenix, AZ asked:
April 10, 2012
Thanks for the quick reply on my painting question. Now, one last detail I forgot to ask before. If I use these in the 70v configuration you offer, what would the frequency response be? You show 38 to 20k for the 8 ohm version, my TOA 900 amps send out 20-20k, so I hope the 70v version of this system keeps close to the original 8 ohm specs. Thanks again.
1 Answer
Hi David: Frequency Response should be identical only it will be in Mono of course. TL
Submitted by: Customer Service - Q&A on April 10, 2012

David J
from Phoenix, AZ asked:
April 9, 2012
I'm interested in using these in the Phoenix, AZ area. They would be subjected to harsh sunlight all year. Is there a recommended way to paint these a light color? Would painting them void any warranty?
1 Answer
Hi David: Painting the speakers would not void the warranty on the internal components. I would take the speaker to a dedicated paint store to get a opinion on what paint would work best on enclosure for your enviroment. TL
Submitted by: Customer Service - Q&A on April 9, 2012

from Bermuda asked:
March 28, 2012
I am looking to get an outdoor waterproof speaker to bring out boating, I am looking to just connect an MP3 player to the speakers and have a portable power source, would this speaker be suitable or does it need to be connect to an amp? If not suitable what would you recommend?
1 Answer
Hi Donal, This would need an amp or receiver for power, and it is completely weatherproof. We don’t recommend submerging it in water, however. Take a look at our wireless speakers like the AW825. This weather-resistant speaker uses a transmitter and can be run on batteries or a AC power cord. CL/MA
Submitted by: Customer Service - Q&A on March 28, 2012

from Ohio asked:
March 16, 2012
Is a sub needed with he 850 speakers
1 Answer
Hi Dick: These speakers feature an 8 inch mid bass driver and have decent bass already. You can purchase and install the pair and I believe you will be very happy with the bass response. We do feature a dedicated subwoofer that matches these speakers(OM-SUB300) but it would need a dedicated subwoofer amplifier like our SMP250 to really make an impact. This can be easily added after the initial installation. As always we feature 30 day satisfaction guarantee. Thank you for considering OSD Audio branded products. TL
Submitted by: Customer Service - Q&A on March 16, 2012

from illinois asked:
February 22, 2012
can you use paging with this speaker
1 Answer
Hi Eric: It depends on your source whether it has the ability to page or not. It would have to be an 8 ohm system to use it in its current configuration. If you have a 70V system you would need to add an external transformer like our EW70V. Make sure you determine whether your Receiver is 8 ohm or 70 Volt. TL
Submitted by: Customer Service - Q&A on February 22, 2012

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