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Home / Product Category / SPEAKERS / Subwoofers / Outdoor Subwoofers / BOM4.1 - Bluetooth Omni Directional 100W Subwoofer with (4) 60W Satellite Speaker Output Connections IP67 Waterproof Power Supply - NO Amp Needed

BOM4.1 - Bluetooth Omni Directional 100W Subwoofer with (4) 60W Satellite Speaker Output Connections IP67 Waterproof Power Supply - NO Amp Needed

Product code: BOM4-1

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OSD Price: $199.95
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Features & Specifications

OSD Audio BOM4.1 All-weather Outdoor Bluetooth Subwoofer with up to 75 ft. Range

OSD Audio's BOM4.1 All-weather Bluetooth Subwoofer brings bass to your backyard, pool or patio so you can experience immersive audio even in noise-heavy environments. This is a beefy 100W outdoor sub is designed with weather-durable components, including an IP67-rated power supply that will last for years in cold, hot and wet climates. The BOM4.1 is also Bluetooth 4.0 enabled so no digging up the lawn or stapling cables through the deck. Simply plug it into an AC outlet and then pair this sub with your tablet or phone, and you�ll enjoy the low frequency sound that�s missing from your outdoor audio system. This is a great outdoor sub to add on to an existing sound system but also includes stereo outputs, so you can build up your outdoor audio with satellite speakers such as OSD LS2 landscape speakers.�

Why Add Dedicated Outdoor Subwoofer?
The subwoofer is a dedicated bass speaker designed to handle the low frequency effects in audio systems and is the �.1� in a 2.1, 4.1 or higher surround sound system. Adding a subwoofer is an extremely efficient and cost-effective way to improve otherwise thin-sounding outdoor speaker setups. In addition to delivering those spine-tingling bass notes, a subwoofer allows other speakers in your configuration to produce the frequency ranges they were designed to produce more efficiently. The result is less frequency roll off and more balanced and rich sound.

What Does IP67 Mean?
If you�re investing in an outdoor speaker, be sure that claims of water-proof or water resistance are backed up with an IP rating. IP67 is an International Protection Rating given to products that meet certain criteria. The BOM4.1 includes an IP67 rated power supply that is 100% protected against solid objects like dirt, dust and sand and has �been tested to work for at least 30 minutes after being immersed in water. This is particularly important in backyards with pools where water can damage or short out the power supply.

Excellent Bluetooth Range:
Every environment is different, but we�ve tested our Bluetooth sub unobstructed up to 75 feet and receive a clear audio signal. Your environment may have trees and other factors that can inhibit Bluetooth transmission but line of sight transmission is generally between 35 and 75 feet. Pairing takes only a few minutes. Be sure the Bluetooth device and the speakers are turned on and fully powered or fully charged. Bluetooth controls are typically found in the device's Setting or Connections menu. The speakers will output a Bluetooth Sync code that will be received by the Bluetooth device and settings such as volume, mute, etc., are controlled directly from your phone, tablet or other Bluetooth-enabled device.

All-weather construction with IP67-rated power supply Bluetooth 4.0-enabled with up to 75 feet line-of-sight range (may vary) Includes a 100W power rating for small, medium and large backyards or patios Green enclosure blends easily into backyard Includes 60W x 2 Pair stereo output to add satellite speakers Ideal for both home and commercial applications �




  View Owner's Manual          


20 Questions & 21 Answers
from NJ asked:
July 1, 2018
Hi, if I order this with 2 sets of AP650, how many dbs does that get me? I have a pretty large pool and patio area so trying to maximize coverage. I’m happy to upgrade to 2 sets of AP850s if that gets me more sound, but from reading the specs and max output of 4.1, that doesn’t appear to be the case. Thanks
1 Answers
Hi Alex: I believe the AP650 are a better match for the 60 watts x 4 speakers of the BOM4.1. Plus they have a more unique speaker mounting system (swivels and tilts) and being totally sealed have a higher rating against the outdoor elements giving you more mounting and placement capabilities. TL/5087
Tim Leahy
on July 2, 2018

from Canada asked:
June 25, 2018
What is the frequency crossover between the sub and speakers? Is there any way to adjust it?
1 Answers
Hi Steve: The Subwoofer Frequency Response is 40Hz to 200Hz. The four satellites Frequency Response is 100Hz to 20kHz. Both are fixed, with no adjustment. You can download an app to Equalize your Smartphone for your Bluetooth signal including adding bass boost. TL/5073
Tim Leahy
on June 26, 2018

from Des Moines, Iowa asked:
June 10, 2018
I am looking to enhance a new patio, approximately 15 x 17, with a sound system which will withstand Midwest weather. I am looking to use bluetooth capability so that I can use my smartphone to operate a wireless system. My wife loves to crank up the volume when she finds some music she enjoys. I was looking at the BOM4.1, with two sets of LS3 speakers, but I was not sure if that would be the best combination. She also likes the brown rock speakers if you have something that might sound better. Any advice?
1 Answers
Hi Denny: The beauty of the BOM4.1, not only do you have a connection for two pairs of speakers but they can be two different pairs. My favorite outdoor speaker, I recommend are either the AP525 or step up AP650 Patio Speakers which features a unique 2-way mounting bracket, they swivel and tilt as well. They definitely have better dispersion than a ground-based speaker for your main speaker. Now with the BOM4.1, you add the second pair either the RX640 (Rock speakers or LS3 (Garden speakers) which can complement the Patio speakers. PLus a100 Watt Powered Subwoofer bonus too boot. I am assuming you have a structure for your patio that will allow you to mount a pair of patio speakers. With you size patio I would suggest the patio speakers would be placed 8 feet apart slightly toed in with the tilt bracket and make sure the tweeters are on the inside. I have a pair of BTP525 on my raised deck here in Oregon. One other note regarding Bluetooth speakers there is no volume control so you are dependent on your Smartphone Bluetooth enabled device for your volume levels. There are apps that you can download for EQ and Bass Boost that your wife will like. Good luck TL/5046
Tim Leahy
on June 10, 2018

from Texas asked:
June 7, 2018
I have a large backyard pool area. Not needing party loud speakers but want good sound that can fill the area over pool noise. (I'm not an "audiophile"). For 4 speakers, I'm deciding between 2 OS525 or 2 OS800 (will be buried); and 2 RX550 or 2 RX670. My question is, will the bigger rock and omni directional speakers be a waste of money compared to the smaller ones, given the limit of 60W/speaker output of the BOM4.1? More specifically, will they, in fact sound louder and more clear than the smaller ones?
1 Answers
Hi Brian: Good question, if it were me and not knowing your layout I would use a combination of an AP650 and RS670. Both have similar sensitivity 91 and 90dB respectfully. And you can be more focused with the aim of these speakers. The biggest issue with these is getting a strong enough signal from your smartphone Bluetooth enabled device. That is how you control the volume on the BOM4.1. It is recommended to add an app to your phone with EQ and Bass Boost. The higher the sensitivity of the speaker the more efficient and less power to get them working. It might help also if you can send me a couple of images of where are proposing to place each pair of speakers. My contact info; TL/5042
Tim Leahy
on June 8, 2018

Peter Romano
from NJ asked:
June 6, 2018
Does this speaker need to be connected to a tuner or amplifier? Or does you just connect to phone and play?
1 Answers
Hi Peter: Bluetooth is the only source connection. You sync up with your Bluetooth enabled device (transmitter) to the internal Bluetooth Receiver in the BOM4.1. TL/5038
Tim Leahy
on June 7, 2018

Eloka Monyei
from Nigeria asked:
June 4, 2018
Hello, please what is the operating voltage of this speaker (110V or 110V -230V). Thanks
1 Answers
Hi Eloka: The waterproof Power supply is multi Voltage, 100V to 240V. You will just need to use an adaptor plug in your country. TL/5031
Tim Leahy
on June 4, 2018

from New Jersey asked:
May 29, 2018
Is there anyway to make the speakers louder? I have 4 OS525 speakers hooked to the Sub. I have the volume on my phone turned all the way up but doesn't seem loud enough for my backyard.
2 Answers
Hi Frank: One of the things recommended to me was adding an app to your Smartphone to boost the output, there are many choices available. TL/5012
Customer Service - Q&A
on May 30, 2018
Hi Frank: The only thing I can recommend for right now is you may want to download an app to give your smartphone an Equalizer/Bass Booster to increase the Bluetooth signal to the BOM4.1. Your certainly not the first to send us this question so we are talking to the factory about tweaking the system as well. Please, let me know if the app helps; TL/5012
Tim Leahy
on May 30, 2018

from Belgium asked:
May 22, 2018
Can the BOM4.1 still be hooked up to a traditional receiver/amplifier or is it bluetooth-only?
1 Answers
Hi Tom: This is the first design for the BOM4.1, it does not have additional inputs so is limited to Bluetooth only. Not sure how we would add other inputs since it is placed outdoors. TL/4998
Tim Leahy
on May 22, 2018

brian Lorbiecki
from WI asked:
May 18, 2018
I am using this sub with 2 jbl outdoor speakers And a galaxy s8 phone overall sound is good But I need to turn volume all the way up to Get average loudness. Is there any way to get A bit more volume? Also do you recommend Burying this sub a couple inches
1 Answers
Hi Brian: Most people download an app on their smartphone to increase the Volume and Bass on their phone. That should help you with your volume issue. You can bury the BOM up to an inch or two. Some people were complaining that burying it deeper caused their distance to sync to go down. Try placing a 2 x 4 piece of wood in front of the BOM4.1 and see if that affects your range? TL/4988
Tim Leahy
on May 21, 2018

Dwayne Betik
from Texas asked:
May 7, 2018
How long is the power supply cord?
1 Answers
Hi Dwayne: The Power Cord 40" (3.3') from the wall plug to the power block and then 16 feet to the Enclosure that it plugs into with the built in Bluetooth Receiver and 4.1 channel power amp. TL/4962
Tim Leahy
on May 9, 2018

Lauren Tindle
from Fort Myers, FL asked:
May 6, 2018
Does this have to be in the ground or can it be mounted about 10 feet in the air?
1 Answers
Hi Lauren: Typically we recommend burying sub enclosure into the ground (anywhere from 2 to 5 inches)so the sub couples with the ground. As long as you have some sort of back wall or in a corner section you can mount this up higher. Mounting it higher also may improve its range to sync up with your device. TL/4961
Tim Leahy
on May 8, 2018

from NY asked:
May 5, 2018
Can I bury this unit in the same manner as os800 speaker instructions, 6"deep?
1 Answers
Hi Rob: There maybe a problem on how deep you bury the sub since the built in Bluetooth Receiver may fall below the ground level affecting the range of the Bluetooth signal. You may have to play with it to find on how deep you can bury it. We had other customers complain about Bluetooth range after they buried the enclosure as well. TL/4959
Tim Leahy
on May 5, 2018

from Eugene, Oregon asked:
May 2, 2018
What are the measurements of the speaker wire coming off the subwoofer? I need to get an idea of spacing the speakers out in my yard from the woofers location!
1 Answers
Hi Craig: The pigtail for the speaker wire coming off the amplifier are only 2 feet long. So you can add whatever speaker wire length (16/2 matches the pigtails) you need. You are not limited to connecting two pair of the same speaker. You could connect a pair of rocks to one stereo set and a pair of patio speakers for the other stereo set as an example. TL/4949
Tim Leahy
on May 3, 2018

Brian Stoneberger
from Virginia asked:
April 17, 2018
Would two pairs of the AP650 be a good option for the BOM4.1 and what volume controls would I use for each pair of speakers
1 Answers
HI Brian: The AP650 would work out great (good choice). As far as volume controls, the best sounding outdoor volume controls (believe it or not there are differences) would be our OVC305R which has no impedance matching but in your case you are connecting the volume control to a single two channel stereo signal with no need for for Impedance matching. The OVC305R is resistor based which features a broader Frequency Response with no high or low end roll off Plus when you turn the volume knob all the way counterclockwise until it stops the Volume Control turns off (disconnects). TL/4015
Tim Leahy
on April 17, 2018

Marc Moschella
from MA asked:
April 14, 2018
Can wireless speakers be used with this unit or do they have to be wired?
1 Answers
Hi Marc: The BOM4.1 only has a built in Bluetooth Receiver, it does not re transmit but feeds the internal 4.1 amplifier which has a 100 watts connected to the 8 inch internal woofer then has two pair of two conductor wires that have to be hardwired to which ever pair of speakers you decide upon based upon your application. That is already a pretty good value based upon the price. I hope that answers your question TL/4910
Tim Leahy
on April 17, 2018

from Ohio asked:
April 11, 2018
How can I see the manual for this product. The link on the web page does not work for me.
1 Answers
Hi Peter: You are not alone, the original shipment was shipped with the incorrect owners manual so it is being re-done. Let me see if I can get the revised manual up on the site and I will try and send it to you as well. Also checkout the latest question and answers on the page. It seems we have generated a number of inquires. This was a product I developed to solve the issue of people wanting to sync up two Bluetooth Kits each with its own Receiver but unless you had one of the newest top of the line Smartphones which would allow you to sync up two receivers at once (Samsung Galaxy). So you can pick out whatever two pairs of outdoor speakers that work best for your application. You are not limited to two identical pairs either. You can mix and match. Example: A pair of Patio speakers like our AP525 could be matched with a pair of Planter speakers like our PS 520. Add to that you get the 100 Watt 8.0 Powered sub woofer to compliment the two pair of satellite speakers. Good luck TL/4905
Tim Leahy
on April 17, 2018

from Missouri asked:
April 11, 2018
the ad isn't clear to me. does this include 2 pair of the satellite speakers or just the connection for the 2 pair. Also is this a plug and play or do you need something else to power them?
1 Answers
Hi John: Sorry for the confusion, this unit is a stand alone product that features dual stereo output connections with no speakers included. But you can connect to a number of different speakers based upon your application. You can also mix and match speakers, say a pair of our AP650 and a pair of our RS-670 rock speakers. They are plug and play since the BOM4.1 features 4 channels of 60 Watts per channel and a 100 watt sub amp for the internal 8 inch sub woofer. You have two stereo outputs right/left (+/-). It addresses the limitation you have with almost all Bluetooth speakers that you only have a master and slave speaker and can not sync up a second pair of speakers without one of the new smartphones like the new Galaxy that allows you to sync up two separate receivers. Add to that you get a sub woofer to compliment the two stereo pairs. TL/4904
Tim Leahy
on April 17, 2018

from Savannah, GA asked:
April 8, 2018
I researching options for outdoor audio for my patio/pool area. I see the satellite outputs are rated 60watts x 2 pair. Can you provide the wattage per channel? Is it 30 watts per channel? What speakers would you recommend matching to this (6.5" options and 8" options)? For my area, I likely will need 2 pairs plus the sub.
1 Answers
Hi Robert: These are 60 Watts class D amplification per channel (per speaker)Someone earlier had similar question about what we would recommend for the 2 pair of speakers. And depending on you application you can select two of the same pairs or mix and match say a patio speaker like the AP650 and a pair of the RS670 rocks. You can also add our OVC300 Outdoor volume control for each pair of outputs for more flexibility. The beauty of this product it allows you to add 2 pair of speakers to a sub woofer something that most of our current Bluetooth speakers are limited to 2 speakers; the master and slave speaker (single stereo pair). The BOM 4.1 not only allows you to power two pair of satellite speakers but adds the 8 inch sub woofer with a 100 watt amplifier powering it. Your choice for the two pair of speakers is only limited by your application. Patio Speakers; AP525, Garden Speakers; LS-2, Rock Speakers; RX640 or RS670, Planter Speakers; PS520 Planters. You can select 2 pairs of each or mix and match. TL/4895
Tim Leahy
on April 17, 2018

Scott Mosley
from west middlesex pa asked:
March 30, 2018
What would be the best satellite speakers for sound to add to this
1 Answers
Hi Scott: The beauty of this product it allows you to add 2 pair of speakers to a sub woofer something that most of our current Bluetooth speakers are limited to 2 speakers; the master and slave speaker (single stereo pair). The BOM 4.1 not only allows you to power two pair of satellite speakers but adds the 8 inch sub woofer with a 100 watt amplifier powering it. Your choice for the two pair of speakers is only limited by your application. Patio Speakers; AP525, Garden Speakers; LS-2, Rock Speakers; RX640 or RS670, Planter Speakers; PS520 Planters. You can select 2 pairs of each or mix and match. TL/4880
Tim Leahy
on April 17, 2018

from Tennessee asked:
June 5, 2018
Can this be connected to a TV or is it Bluetooth only?
1 Answers
Hi Matt: In order to combine these you would need to add either a Bluetooth Dongle or a Bluetooth Transmitter: This what it says online: You can still plug in either a Bluetooth dongle or a Bluetooth transmitter. A dongle attaches to the USB port on your television and gives it Bluetooth capabilities. If you use a transmitter it will plug into either the headphone jack or an audio output port on your TV and connect with your Bluetooth headphones. Mar 31, 2015 (this was an older post so there are better options for you to add Bluetooth transmission from your TV to the BOM4.1). Good luck TL/5033
Tim Leahy
on June 6, 2018

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