Dayton Audio SA100 100W Subwoofer Plate Amplifier

Brand:| Model: SA100
This Dayton Audio SA100 100 watt subwoofer amplifier with adjustable crossover, high and low level inputs, auto on/off and phase reversal switch is perfect for building your own powered subwoofer. This plate amp offers very stable operation, with full overload protection.
  • Low distortion audiophile sound
  • Adjustable low pass crossover
  • High and low level inputs/outputs
  • Auto On/Off
  • Phase reversal switch
  • 75 watts RMS @ 8 ohms, 100 watts RMS @ 4 ohms
  • S/N Ratio: 90 dB (A-weighted)
Part # 
Weight: 8.55 lbs.  
List Price$149.99
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Part # 300-802
Qty:  EA
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Product Details

Dayton Audio SA100 100W Subwoofer Plate Amplifier

Small but mighty! The Dayton Audio SA100 high performance subwoofer plate amp module packs big-amp features into a compact chassis that is ideal for installation into cabinets that can't accommodate bulky old-style amps. We made it small, but included everything that you need to connect the amp to your system and get maximum performance. Input/output connections are through your choice of either line level RCA connectors, or speaker level banana jacks. A stereo input signal is summed to mono and sent to the internal low pass crossover, which is selectable from 40 to 180 Hz; the input gain sensitivity is fully adjustable as well.

The SA100 also includes a phase reverse switch, which helps you to achieve the best acoustical match with the rest of your speakers. An Auto On/Off switch keeps the amp standing by, waiting for an input signal to turn it on. A large surface area heat sink is combined with internal overload, thermal, and short circuit protection so that you can expect years of reliable operation.

Specifications: • Measured power output: 75 watts RMS into 8 ohms @ 0.1% THD, 100 watts RMS into 4 ohms @ 0.2% THD • Signal to noise ratio: 90 dB (A-weighted) • Dimensions: 7-1/2" W x 8-11/16" H x 4-3/4" D • Enclosure cutout: 6-1/2" W x 7-1/2" H • Power requirements: 120 VAC, 60 Hz, 180 watts • Net weight: 7.6 lbs.

Dayton Audio SA100 100W Subwoofer Plate Amplifier
  • BrandDayton Audio
  • ModelSA100
  • Part Number300-802
  • UPC844632015946
  • Product CategorySubwoofer Plate Amplifiers
  • Unit of MeasureEA
  • Product Rating
    (117 Reviews)
  • Weight8.55 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

View similar products to the Dayton Audio SA100 100W Subwoofer Plate Amplifier
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Dayton Audio SA100 100W Subwoofer Plate Amplifier
Dayton Audio SA100 100W Subwoofer Plate Amplifier is rated 4.5214 out of 5 by 117.
Rated 5 out of 5 by from Great amp!I bought this to replace my old Dayton 25w plate amp that I have had for over 10years and which now has been moved from den sub to bedroom re purposed passive Bose passive sub.. I am running the Dayton 100 at 4 ohms connected to my Polk C4 car sub which I use as my primary music sub (Sony ES receiver, den / stereo music room). The sounds is fantastic, very responsive, low low distortion, good build, stays cool under load and pounds overall. I would buy it again and again. Thanks Parts express!
Date published: 2014-03-18
Rated 5 out of 5 by from solid ampgood amp...reliable...good power...well made ......backed-up by PE
Date published: 2014-03-18
Rated 4 out of 5 by from SA100 100W Subwoofer Plate AmplifierThe amplifier performs as I expected and I am happy with this purchase
Date published: 2014-02-13
Rated 5 out of 5 by from 100 watt of goodnessBuilt an 8" sub for my desktop pc and required a amp to give it some powerMy sub is rated for 300 rms and total of 500 watt peak. I wasnt sure this 100 watt plate amp would be enough to power the sub. After reading the reviews i went ahead and made the purchase. To my surprise this amp is more then enough to power a loud sounding bass thumping sub. Im very happy with the purchase. My sub is wired to 4 ohms to recieve the full 100 watts. The crossover built in does its job to filter highs. You wont be dissapointed. Keep in mind the size of your sub.
Date published: 2014-01-30
Rated 4 out of 5 by from M&K V1B subwoofer replacementI have two M&K sub-woofers. When the first plate amp went bad, I purchased the SA100 amp. To see that review, search for the string "M&K V1B" and you should find it.Now, the second original M&K plate amp has gone bad. I purchased a second, identical plate amp (Dayton Audio SA100), to fix it.I had a problem with the replacement plate amp. It worked for about 2 days or so and then failed. I think something was wrong in the signal processing (low level stuff) part of the circuit board since the power stage seemed OK. I notified Parts Express about my problem and they sent me another plate amp before I managed to get my bad one back to them. The second amp was OK and is still OK. Apparently, the first amp worked long enough to make it out of the factory so it passed all initial tests.I rated this plate amp 4 stars rather than 5 stars because of the failed amp I had to return. I still rate Parts Express 5 stars on how they handled the failed amp.
Date published: 2014-01-30
Rated 2 out of 5 by from SA100 M&K 2B VolkswooferI bought the Dayton SA100 as a replacement for the plate amp I've been nursing along in an M&K 2B Volkswoofer. I like the driver and cabinetry of the old M&K equipment, but their electronics were poorly built and poorly applied, at least the ones I ended up with. The SA100 was a good exchange as its output power and filtering parameters closely match Ken Kreisel's original spec. Unlike the original however, the SA100 offers both fully variable cutoff frequency and phase reversal. These added control features really have proven to be helpful since the living area where my system operates is so far away from being acoustically optimal.Before placing the PE order I put more time into studying my various options than was really warranted, but in part I was also getting a broader update on technologies available now. I bought my M&K speakers and much of the rest of my equipment in the mid 80's and for the most part still use the same components, falling somewhat out of touch along the way. Still, published spec's only go so far, how it sounds in the end is what matters and in my case it's fine. I make no claims as to how it would sound if cranked up five times louder than the volume at which I listen, so anyone seeking that kind of critique should read a different review.Installing the SA100 took a bit of cabinetry modification but no big deal. I used the tee nuts and button head cap screws M&K used originally to fasten it in place and wired the dual cone driver in series giving the SA100 a full 8Ω load. The gain is adjustable on this amplifier so there's no reason to overload it with low impedance. A few previous reviewers have complained that the amp's stand-by mode failed to work for them so I anticipated running into that. In point of fact however it works fine for me, for that matter this entire retrofit has proven to be a plug-and-play operation.This was also my first transaction with PE, so I'll extend my review to include that part of the experience. I found my communications with both tech and customer support to be pleasantly professional, helpful, and knowledgeable, but ordering and shipping was another story. I was lulled into placing the order when I did by PE's $89.80 "special price" and "free every day shipping" for all orders placed before 12/25/13. Since we live in a remote part of New Mexico where the post office does not deliver it was critical to make sure delivery would be made by UPS or Fed Ex. PE's online ordering system assured me that would be the case followed by an emailed UPS tracking number. UPS however subsequently turned it over to the Post Office thanks to the "UPS SurePost" delivery program. As a result it took more than 2 1/2 weeks to get from Ohio to my hands here in New Mexico, and that's only the case because I chased after it until finally tracking it down. Now, one month after placing my order PE still offers free shipping and along the line dropped the SA100's price to $71.84. Had I walked to PE's warehouse in Ohio I'd have taken delivery faster and saved $18 by the time I got there. Not happy, and why I'm only giving this review two stars.
Date published: 2014-03-15

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Dayton Audio SA100 100W Subwoofer Plate Amplifier

AC Power Rating - 110 V or 220 V

What is the AC Power requirement for this module - 110 V or 220 V
Asked by: aashish351
Answered by: jalng63
Date published: 2014-01-24

Will this replace the amp on my PSB Subsonic II

My Subsonic II has a 12 inch woofer and the original specs say the amp is 90 watts RMS. No spec for the ohms. The sub has developed a low frequency hum, that can be heard during quiet parts of a movie.I realize that it is not going to fit the opening on my subs housing, but I can deal with that. I just want to be sure it is a good match for what I am replacing.
Asked by: Batboy 103
You may find that this amp has a little less power than the original PSB amp...and another thing that might be an issue is that this amp has a 12dB/octave adjustable slope....while the original PSB amp states it has a 24dB slope filter that is adjustable. This is going to mean more driver overlap with the shallower slope filtering. It could cause mushiness and problems getting it to integrate with your mains. IF, however, you are using it running through a receiver that already has active bass management and it's own crossover filtering onboard, then this amp might just do the job as a replacement. Otherwise, I would recommend looking at the SA-240 or equivalent to power a 12" subwoofer.....and make sure that you get one that has 24dB adjustable slopes....this is going to ensure you get a good replacement that you will be satisfied with the performance.
Answered by: SpkrNuts
Date published: 2014-01-24

Does this have to be installed into a "box"?

I have an in-wall sub and it requires speaker wire connections. So I am looking for an amplifier to run the sub, but can I have it run outside of a box? Do I have to have it "installed", or could I just plug it in and mount it to an open shelf or vented wall?
Asked by: andyzim
Yes you can mount it to a shelf, wall, etc. there's no reason why not. The sub-woofer leads come from what would be the "inside panel" of the plate amp, so a provision has to be made for them, and you need access to the "rear" panel where the connections and controls are, but it could be mounted into an interior wall made of sheet-rock, too. Just don't close it up inside a small cabinet where it can't get proper ventilation.
Answered by: Whitneyville
Date published: 2014-01-24

sa-100 can i use this unit with a avr that has a single sub output?

harmen-carden avr-125 that has a single sub output?
Asked by: antonio f
I had once ordered a subwoofer cable that took the single subwoofer out and Y'd it out to the two inputs. In this situation, I'd suggest using the below with whatever length of subwoofer cable you need. I don't know what your price-point is so I gave two options.
Answered by: AlonzoTG
Date published: 2014-01-24

amplifying transducers with AV sub output and/or SA100

Just purchased Clark TST209 and 4 puck package, have a 5.1 AV receiver with 100wpc (don't use the center channel yet) plan to run the low level RCA outs from AV to input on the SA100, then the SA100 outs to the clark tst209. can I use the center outs from the av amp to power the 4 pucks, or would it be better to wire them in series to the SA100 at an 8 ohm load with the clark? Also have a separate 25wpc two channel amp available to run pucks if needed. Adding these will involve a lot of rewiring the existing system, so want to get It right.
Asked by: floridaNate
Do not try to daisy chain the transducers through the center channel of your receiver. It could be done but will involve more work and wiring then you are aware of and that assumes you have the other equipment to do it. If your 2 channel amp is bridgeable I would run one off each for the most power. If it is not, your best bet is the 8Ω load on the SA100. If you felt you needed more power you could always add a second SA100 (one on each) and not have to do much more work.
Answered by: BATMAN
Date published: 2013-04-08

High Level Inputs 2

Does the gain work when using the high level inputs? I was looking to use these amps to add a bit of extra muscle as needed to a subwoofer contained within a system that has incredibly efficient mid-bass and tweeter drivers. The receiver I'm using for the retro system I couldn't afford as a teenager does not have a subwoofer output.
Asked by: WillCo
Yes. Both the high level & line level inputs can be increased and decreased by the gain control. Also, there is a low pass adjustable filter to match to your mid/tweet sensitivity. Remember though, very low bass loudness, increases with volume relative to the mid/hi volume. It's part of how we hear. RE: Fletcher/Munson curves of equal loudness contours. If people complain--tell them you are equalizing the bass!!
Answered by: Joe from San Francisco
Date published: 2014-01-24

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