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Home / Product Category / AMPLIFIER / Mono Channel Subwoofer Amplifiers / SMP60 80W Compact Mono Subwoofer Amplifier

SMP60 80W Compact Mono Subwoofer Amplifier

Product code: OSD-SMP60

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Features & Specifications

With the Compact 80W Subwoofer Amplifier OSD-SMP60, you'll get exceptional sound no matter what you're listening to or where. This compact, tabletop 80W subwoofer amplifier is perfect for fitting into tight spaces. With dimensions of just 8 ½ x 6 3/16 x 2 5/8 inches, it has a discreet size and sleek shape that fits into your home's décora seamlessly. Best of all, it does wonders when it comes to enhancing your bass. By giving you that extra depth and richness, your music and movies will sound clearer and crisper.

This amp is designed to power one 8-inch subwoofer, so it's great for smaller setups, including outdoor speakers or home theaters. It works best when used with a subwoofer with no more than 80W peak (40-watts RMS). It also features an output impedance of 8 ohms, an automatic on/off switch and an 18V power supply. Because it includes all these handy features and has such a convenient size, the Compact 80W Subwoofer Amplifier OSD-SMP60 is incredibly easy to hook up. If you need help, you can always check out our step-by-step instructional videos for subwoofer amplifier setup. Plus, you'll get free lifetime technical support for any product you purchase from OSD, so you can always contact us with any questions you might have. A two-year warranty is also included to ensure that you get the best performance from this exceptional product.

The Compact 80W Subwoofer Amplifier OSD-SMP60 is a great choice for homeowners who want a simple setup with audiophile-approved sound. This 80W subwoofer amplifier also comes at a great price, so you'll also save money by shopping for this and other home audio components at Outdoor Speaker Depot. Use this compact amp to power your indoor or outdoor speakers and get the rich, powerful music you want anywhere at home.

This amp is designed for a small application and will only power (1) 8" subwoofer.

Also note that it is recommended you use a subwoofer with no more than 80W (40-watts RMS).


Other Product Info

100W high-current mono amp with built-in crossover network. Crossover features adjustments for subwoofer fine-tuning to individual room acoustics.



  View Owner's Manual          


26 Questions & 29 Answers
Josh Stroner
from Huntington Beach, CA asked:
January 10, 2019
I purchased this SMP60 80W Amp to connect to a single JBL 19CS 8" Ceiling Subwoofer I have. My receiver only has a single RCA pre out for the subwoofer. I have purchased a single RCA to dual RCA splitter to connect the Amp to the receiver but I am not getting any sound / bass from the subwoofer?
1 Answer
Hi Josh: The SMP60 is not the right match for your single JBL. The JBL sub rated at 200 Watts maximum and 100 Watts RMS Nominal Average power. The SMP60 rated at 80 Watts Peak and 40Watts RMS. There are no shortcuts here. Based upon cost alone you have a powerful In-ceiling subwoofer from JBL that is available online at $429.00 per pair (the lowest I found). That would be $215.00 each. A better choice would be a SAM300 from our OSD Audio Black Series: BLACK SERIES 300W MONO SUBWOOFER AMPLIFIER - SAM300 With the Black Series 300W mono subwoofer amplifier, you'll get exceptional sound no matter what you're listening to or where. This unit is on our site. There is no price listed so you would need to call for price. This unit is also rated to 4 ohms so you could add a second JBL 19CS. You would have to call our customer service for a price. Note: There is a30day performance Guarantee on the SMP60 Sub Amp. TL/5366
Submitted by: Tim Leahy on January 11, 2019

Nick Quillen
from VA asked:
November 9, 2018
I have acquired one of these that doesn't have the power supply. Is there a way to get a replacement power supply?
1 Answer
Hi Nick: You will need to contact the OSD customer Service for a replacement. I am sure this Power Supply is for some amplifiers we sell or have sold. So there is a good chance they will have a power supply that will work for you. 1-562-697-2600 and press either 1 for sales or 2 for technical support. Sales and Support are at the facility where the warehouse is located. TL/ 5276
Submitted by: Tim Leahy on November 9, 2018

from Virginia asked:
March 29, 2016
My receiver only offers a LFE output in the form of a single RCA. Where do I connect the single RCA, as this amp accepts a stereo connection? Do I need to buy a 2 Male RCA to 1 Female RCA Splitter?
1 Answer
HI Jesse: Yes, you would need a Y adaptor, our model OSD-AC-Y-FMM would work. But the question is which sub-woofer are you powering with the SMP-60? Which Receiver are you connecting to the LFE output (how many watts per channel)? You do not want to under power your low frequencies versus the other channels. You want to make sure your system is properly balanced. Checkout our SMP-250. TL/3785
Submitted by: Customer Service - Q&A on March 29, 2016

from South Bend, IN asked:
January 30, 2017
I have the SMP 60 with a OSD 8" in wall sub. The sub barley ever kicks on, whats the deal? What are the ideal settings for these 2 in conjunction with each other? These were left behind in a house I bought, I'm not the installer but everything seems to be hooked up properly. I dont think the automatic on/off thats built in was a great idea. I think this has a lot to do with the issue. If so how do I bypass that?
1 Answer
Hi Jeff: A couple of questions...What are you using the subwoofer for, Music or Home Theater. If its music you should be connected to Right and left stereo input. If for Home Theater is there an LFE output on your AV Receiver. If so you should be connected to the LFE input. This is where you adjust the Subwoofer in the Audio Video Receiver itself. That way the volume level is controlled by the Receiver. If connected for music you are at the mercy of the Receiver you are connected to. Do you have to control the volume control on the SMP60 or is your volume variable with the source? The other thing you can check is the installation of the IWS8. What is behind the speaker? Is it reinforced with a separate enclosure, does it have fiber fill in the stud bay? Have you walked around the room to see if the sub sounds different. Low frequencies due to the size of the sound wave tends to create dead zones. That is the biggest disadvantage you have with the in-wall sub is you typically can not determine where the best location for the sub is in the room before installing it. Location is usually determined by space available. With an external woofer you can experiment where the best location might be. Many sub woofer companies recommend placing the sub woofer where you will be sitting. Then walk around the room to the 3 or 4 locations that you would be able to place the sub around the room (usually near an electrical outlet) Find the one that sounds the best and place the sub there. Obviously you are not able to find that location with an in-wall sub. Add to that you inherited the location when you moved in. Regarding the auto sensing it is a feature that allows you to hide your amp and have the amp come on when it senses a signal, then waits 5 plus minutes before going in standby. The turn on maybe having a problem with the signal it is seeing. I hope that helps TL/4199
Submitted by: Customer Service - Q&A on January 31, 2017

from North Carolina asked:
January 8, 2017
Purchased two of these earlier this year, and one of them continually blows a it's fuse, after working for about two weeks. I've tried to replace the fuse, but non seems to hold once installed. I don't want to return the item if I don't have to. I'm assuming that it takes a certain kind of fuse, which isn't available on the outside of your market. If at all possible, I like to have some replacement fuses sent to me, with purchase of course, to try those, or it may be necessary for me to return item. My email address is (, and my phone number is (252-232-1537) Thanks in advance.
1 Answer
Hi Harry: Are both of the SMP-60 used in the same configuration driving the similar speakers. This sub amplifier works best when driving a single 8 ohm speaker like our IWS8. Have you tried switching the good amp onto the system that has the amp that blowes the fuses? Then you can see if it blowes fuses as well believe we might have some of the replacement fuses, you will have to check with our RMA department. We have step up Sub amplifiers that may work better in your application. If you want to discuss further, drop me a line at TL/4169
Submitted by: Customer Service - Q&A on January 12, 2017

Mike Hanks
from CALIFORNIA asked:
May 7, 2016
Will the SMP60 work well between a Denon S-510-BT and a 220 watt rated 6 3/4" 4 ohm 81db passive sub? Thanks.
1 Answer
Hi Mike: The SMP-60 will not provide enough output for your Sub that you described. The SMP-60 needs to see an 8 ohm load (the sub is 4 ohm). Your sub is also rated at 81dB so it is very in-efficient and will need a lot more current than the the SM-P60 will provide. And the peak output is only 75 watts. You should look at our SMP-250 for your application. Typically your low frequencies are power hungry so you will need more power than the SMP-60 will deliver. TL/3864
Submitted by: Customer Service - Q&A on May 9, 2016

from Ohio asked:
April 10, 2016
If you pair this amp with an OM-SUB200 subwoofer, what input on the sub do you connect the single speaker wire output from the amp? Or does it matter?
1 Answer
HI Roger: I need to look into the internal connection. Typically this speaker is connected in line with the satellites where you have to connect a stereo right and Left input and it splits the signal with four conductors going to the internal low pass filter for the Sub out and the other four conductors, after the split go to a right and left satellite speaker. I need to check if the woofer has two voice coils and what each input is rated at. If they are 4 ohm then it would be wired in series so the impedance doubles to 8 ohm. I will try and get you more details. Thanks for the question TL/3807
Submitted by: Customer Service - Q&A on April 11, 2016

from Hawley, MN asked:
October 10, 2015
I have a sony STR-DH550 5.2 amplifier but would like to use a in wall subwoofer. Will this work with it? here are the specs: amplifier Power 6 ohms, 20 - 20 kHz, 2-ch driven: 90 W + 90 W (0.09%) 6 ohms, 1 kHz, 2-ch driven: 105 W + 105 W 6 ohms, 1 kHz, 1-ch driven: 145 W
1 Answer
Hi Shawn, Does your receiver have a pre-amp output or sub out? The SMP60 would connect via an RCA cable or subwoofer cable from your receiver, not via speaker wire.
Submitted by: Customer Service - Q&A on October 26, 2015

from Roseville, CA asked:
January 30, 2015
I have an 8 inch passive sub Impedance 8 ohms Power 80 to 160 Max Sensitivity 90db to +2db Crossover 6db per octave Will this amp meet my needs or do I need to get the SMP250? I require more of a rumble feel rather than big bang feel
1 Answer
HI Bally: The best application for the SMP60 is a single 8 inch woofer that is fairly efficient (90dB is good). It should be ideal. I would suggest building an enclosure behind the sub if accessible or to use fiber fill in stuffer in the wall behind the sub if the sheetrock is in place and you have limited access. TL/3119
Submitted by: Customer Service - Q&A on February 2, 2015

from Fort Mill asked:
November 22, 2014
I have a preout on my pioneer for a subwoofer. Since we reconfigured our living room, my wife does not want a subwoofer on the floor. If purchase one of your inwall subs and the compact amp, will this all work correctly? Id assume this amp auto/on off and volume stays with preout from the Pioneer. was I set the levels on the Sub amp, I should not need to adjust it manually. Is that correct?
2 Answers
Hello, You can do the SMP60 and the IWS8, but if you go with the IWS10, you would need a larger sub amp. You would output your receiver to the SMP60 via RCA or Subwoofer Cable and control from the SMP60 volume.
Submitted by: Customer Service - Q&A on November 26, 2014
Hello, You can do the SMP60 and the IWS8, but if you go with the IWS10, you would need a larger sub amp. You would output your receiver to the SMP60 via RCA or Subwoofer Cable and control from the SMP60 volume.
Submitted by: Customer Service - Q&A on November 26, 2014

from Huntington Beach, CA asked:
September 3, 2014
I have a single JBL 19CS 8" Ceiling Subwoofer. Will this OSD-SMP60 Amp work well with this speaker / sub?
1 Answer
Hi Josh, That looks to be a fitting subwoofer for this amp. It's 8ohms and works at 100watts continuous.
Submitted by: Customer Service - Q&A on September 3, 2014

from Mexico City, Mexico asked:
August 12, 2014
Hi everyone. I recently bought this product at Amazon, but the reviews there are terrible. Could you please inform me if these were isolated cases or these belonged toa damaged lot? I don't have the product yet, so I've not been able to test it, but this information would be helpful. Thanks in advance.
1 Answer
Hi Gustavo, Most negative reviews for a small subwoofer amp like this are due to misuse. This i a very small, low-power mono amplifier that should be used to power a single in-wall subwoofer. The max size of the subwoofer should be 8". This will not have enough power to effectively run larger subwoofers, but it will work great with smaller subs!
Submitted by: Customer Service - Q&A on August 13, 2014

mac Larsen
from Atlanta Georgia asked:
July 2, 2014
When I turn on the amp, I hear a soft bump coming from the subwoofer and within a second the SMP60 cycles off. It is connected to the sub preamp output on a new YamahaRX V377. Went to the OSD Audio web site and it is under construction, called OSD and just got a general VM message. Is this AMP faulty? I can return to Amazon but would rather talk to someone first.
1 Answer
Hi Marc, What subwoofer are you attempting to power with the SMP60? It's only built to power smaller subs such as our IWS8. Have you tried with a different source to see if it could be an issue with signal level input? If the amp doesn't sense a strong enough input signal it will shut off. Dial our number and press 1 for sales/support.
Submitted by: Customer Service - Q&A on July 3, 2014

from Bangor Maine asked:
March 28, 2014
My receiver has a subwoofer pre-amp output which I want to feed into the OSD-SMP60 and then output to a 6x9 100 watt 6 ohm subwoofer speaker. Will this setup work?
1 Answer
Hi Scott, You can run the SMP60 out of your receivers pre-amp output but not into a car subwoofer. A car subwoofer is supposed to be powered by a 12V battery, not a 110V AMP like the SMP60 gives. Check out some of our home theater subwoofers like the P-8 or S-10. CS 2570
Submitted by: Customer Service - Q&A on March 28, 2014

from Nebraska asked:
January 23, 2014
Is there a minimum impedance? I understand the Amp is rated for 40W RMS at 8ohms, however what if I have wired a dual 4ohm voice-coil sub to a total of 2ohms impedance? Will this work or does the amp have a minimum required impedance? The sub can handle a total of 400W RMS at 4ohms RMS, however I'm fine with the sub being under-powered. I would still like to get as much power as possible without buying the larger size of amp.
1 Answer
Hi Eric, Correct - this subwoofer amp can only run off an 8ohm load. For a sub like that, you want something like our SMP250 subwoofer amp. It's currently out-of-stock, but we should be receiving it back in sometime in the next couple of months. -BM 2454
Submitted by: Customer Service - Q&A on March 10, 2014

from NJ asked:
July 5, 2013
will this have enough power to drive your om sub200
1 Answer
The SMP60 is a lower powered amplifier which we recommend for our smaller subwoofers such as the IWS8 in-wall sub. The SMP250 is a high-current amplifier that will provide much more power to support larger subwoofers like our OMSUB200. -BM 2053
Submitted by: Customer Service - Q&A on July 12, 2013

from Long Island, NY asked:
April 9, 2013
i bought the 10 inch in wall subwoofer and need an amp to power it. Will the sub amp OSD-SMP60 be strong enough to power it?
1 Answer
Hi Robert, The SMP60 subwoofer amp will not have enough power to drive a 10-inch subwoofer. Consider using the SMP250 for the IWS10. You don’t want to under power a subwoofer because low frequency effects add so much to the surround sound experience. CL/MA 1786
Submitted by: Customer Service - Q&A on April 9, 2013

from Alberta, Canada asked:
February 23, 2013
Hi, What type of power adapter do i need to supply the 18v AC? Thanks
1 Answer
Hi Robert, We cannot advise on the type power adapter for Canada; however, the SMP60 subwoofer amp comes with the AC power cord that connects to the amp and a standard Edison outlet that would typically be 110-120 volts. CL/MA 1651CL
Submitted by: Customer Service - Q&A on February 26, 2013

from ontario canada asked:
January 27, 2013
I have a 10 inch sub with these specs 10" Rubber Surround Driver with 22-200 Hz Range 75 Watts RMS and 150 Watts Max 92 db Sensitivity Will this amp work with this sub?
1 Answer
Hi Ryan, It might be a little under powered for your setup. Are you using this for Home Theater or just for music? If it is for Home Theater you should check out our SMP250 and consider adding a second 10 Inch sub to have dual subs for your system. Most better AV receivers now feature 7.2 or dual subwoofer outputs. You would only need a single sub output to connect to the SMP250 than connect both subs in parallel. It would probably be best if you used two identical sub-woofers. Good luck TL/MA - 1586
Submitted by: Customer Service - Q&A on January 28, 2013

from Pflugerville, TX asked:
December 29, 2012
I have the SMP60 + ISW8 combo installed now and I'm not sure I'm hooking it up right. The power auto switches off within a second of pressing the on switch. My receiver is an Onkyo HT-R520 with a single pre-amp subwoofer out. I've tired multiple hook up options, to both the left and the right inputs, Auto vs On position on the switch. The mono amp keeps turning off. I've even disconnected the sub out thinking that end my be causing some overload, but I get the same effect. Is the mono sub working properly? 2nd question, assuming above is rectified, what volume level and cross over frequency should the mono amp be set to? If I crank up the volume to its fullest, can I still control the overall volume for the system off my Onkyo AV amp like I did with my previous powered amp?
1 Answer
HI Erik, Whether you select normal or auto, the front on/off button must be in the on position (pushed in). The auto on takes about five minutes before it turns off but comes on almost instantly once a signal is present. If it is turning off after you enable the on switch, then you may have a defective amp. Please call us and ask for Mike the Tech-man. He can determine the problem over the phone. TL/MA - 1501
Submitted by: Customer Service - Q&A on December 31, 2012

Jim Oestreich
from Warrington, PA 18976 asked:
November 30, 2012
I have an earlier unit (no auto switch) hooked to an Onkyo HT-RC430 and outputting to an 8 inch 4 ohm woofer. I keep getting a fade of the sound coming from the speaker and the a sudden pop and the sound comes back. Can you tell me what I need to look at as the source of this issue?
1 Answer
Hi Jim, The problem may exist in the application. The SMP60 subwoofer amplifier is price-driven product limited to driving a single 8 ohm speaker. If you’re powering a 4-ohm driver, the amplifier has to double its output. Music can be very dynamic with the impedance changing constantly both up and down. Connecting a 4-ohm driver is over-driving the amplifier and causing it to become unstable. The auto sensing feature of the new version would not make a difference in your setup. I would recommend sending the amplifier back to us to be tested. If you still want to use this amp, you may need to change to an 8-ohm in-wall subwoofer like our IWS8. The other option is to upgrade your subwoofer amplifier to our SMP250 to drive your 4-ohm subwoofer. You might even consider adding one of our powered subwoofers like the S-10 or S-12 instead. TL/MG 1433
Submitted by: Customer Service - Q&A on November 30, 2012

from California asked:
July 5, 2012
My input source is a mono pre-amp out from a receiver, so only a single jack. I noticed the back panel has two input jacks. Does this work well with that kind of input source? How should it be connected?
1 Answer
Hi Nils, You can use a Y adapter or its common that a single sub cable will work. You would connect that to your one output to either the right or left of the smp60 input. You might find both right and left work or one or the other will only work. This should be no problem. CL
Submitted by: Customer Service - Q&A on July 6, 2012

jonathan langbein
from wall, nj asked:
May 2, 2012
how do I hook up my satellite speakers to this amp. doesn't this get hooked up after the receiver and before the pair of satellites so it cuts off the low frequencies to the satellites?
1 Answer
Hi Jonathan: The SMP60 does not connect directly to the Satellite speakers. Checkout the SMP250 Sub-0woofer amplifier which features speaker level outputs for the satellite speakers. What Sub-woofer are you planning to use and can you describe the Receiver and satellite speakers you are planning to use? TL
Submitted by: Customer Service - Q&A on May 3, 2012

from Frisco, TX asked:
February 19, 2012
I have this Amp, connected to the 8" in wall subwoofer. Every few minutes I get a quick popping noise. Any idea what the problem is?
1 Answer
Hi Chris: On the new units we add a auto or music sensing featurer. Check to see what your turn on option are set at. If you have it set to auto-on, first try switching to manual on. Or in the auto-on mode try increasing the volume from your source. Please let us know what you find out. TL
Submitted by: Customer Service - Q&A on February 20, 2012

from Houston, TX asked:
January 17, 2012
the line out of my current reciever is a single rca, this sub amp has a left and right input, do i need to split the signal or just go to one, or do i convert it to 3.5 mini and go to the stero jack input?
1 Answer
Brent, No need to convert, output is a mono signal from your Receiver so just connect to either right or left input of SMP60. Try both, one may sound louder than the other so pick that one. CL
Submitted by: Customer Service - Q&A on January 17, 2012

from asked:
January 5, 2012
HI, Does this amp go with your Sub 200 Omni Subwoofer speaker? Does this amp need to be kept in dry area even though it's powering an outdoor speaker? Do you have amps that can be located outdoors like your outdoor speakers which can handle all weather conditions? How would this Sub 200 woofer go with your S450 Omni Speakers? would this make a good sound combination ? Or would it have a weak mid range? Would the bass be too strong? I'm trying to find a speaker system that suits my situation which has two general purposes: 1. Playing music around a very large balcony area which we've had landscaped with trees, decking, hedges etc. thus the music will be for parties and general easy listening at other times 2. Audio for outdoor video screen to watch movies in outdoor lounge area So I can see how the Omni directional speakers positioned around the circumference of the balcony in the planter boxes would work well for the music. But would these speakers work well for when we want to play movies using our Apple tv plugged into a video projector projecting the image onto a movie wall located next to the spa being at the opposite end of ten balcony from where we'd sit watching movies from the lounge? I hope you can make sense of the questions given you haven't seen the layout etc I'm trying to describe I'm in Sydney Australia. Do you have a distributor of your products here that I can talk to or even go see them? If not does it make it too expensive to order your products online and have it shipped over? Cheers Steveya
3 Answers
Steve, The SMP60 is a smaller sub amp. Idealy the SMP250 sub amp would be a better match with the Sub200 omni - It would power your speaker to its full potential being a great addition to the OS450's. Although both amplifiers are strictly indoor, we do not have an outdoor sub amp at this time. CL
Submitted by: Customer Service - Q&A on January 5, 2012
Steve, The SMP60 is a smaller sub amp. Idealy the SMP250 sub amp would be a better match with the Sub200 omni - It would power your speaker to its full potential being a great addition to the OS450's. Although both amplifiers are strictly indoor, we do not have an outdoor sub amp at this time. CL
Submitted by: Customer Service - Q&A on January 5, 2012
Steve, The SMP60 is a smaller sub amp. Idealy the SMP250 sub amp would be a better match with the Sub200 omni - It would power your speaker to its full potential being a great addition to the OS450's. Although both amplifiers are strictly indoor, we do not have an outdoor sub amp at this time. CL
Submitted by: Customer Service - Q&A on January 5, 2012

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