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.
A restocked/refurbished, or Open Box unit of the product is available -- see it now
  • 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.  
Regular Price$89.80
Sale Price
Part # 300-802
Qty:  EA
Available Payment Methods

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
    (126 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
in the Subwoofer Plate Amplifiers product category.


Dayton Audio SA100 100W Subwoofer Plate Amplifier
Dayton Audio SA100 100W Subwoofer Plate Amplifier is rated 4.5238 out of 5 by 126.
Rated 4 out of 5 by from prompt deliveryMy order arrived on time. For a prior order, a replacement was necessary do to missing parts. The replacement order was processed timely.
Date published: 2014-11-06
Rated 5 out of 5 by from Fits like a gloveReplaced a blown by lightning KLH Audio Systems S70EIH plate amp. Had to switch 1 woofer spade from small to large. Fit perfectly into existing woofer cabinet and has same electronic crossover features. Binding posts and heat sink are a plus over original unit. Sound quality is better than original unit. Excellent product.
Date published: 2014-11-05
Rated 5 out of 5 by from Just what I neededI bought this to replace the original manufacturer's amplifier in an old sub-woofer. This one from Parts Express installed where the old one came out, almost perfectly. Very happy with the easy installation and the performance. I'm using this to drive a 12-inch woofer.
Date published: 2014-11-02
Rated 3 out of 5 by from Rating may be exaggeratedI've used Dayton plate amps before, and they seem to be built plenty tough. I disagree with the recommendation to use this one to power two Aurasound tactile shakers. http://www.parts-express.com/aurasound-ast-2b-4-pro-bass-shaker-tactile-transducer--299-028. When wired in series, the impedance is 8 ohms, which brings the amp's output down to 75 Watts. I actually think this RMS rating is exaggerated; the amp was full-out, and not getting the shakers shaking enough. So I returned it and I'm using a 250-watt rated amp (rated 125W @ 8 ohms) and I have to be careful not to exceed the capacity of the shakers.Parts Express did an excellent job with the return and I couldn't be happier with the customer service. My recommendation would be to use this amp to power only one shaker at 8 ohms. That would probably provide plenty of reserve power to do get the job done.
Date published: 2014-10-14
Rated 5 out of 5 by from Great For Aura Bass ShakersI have two Aura Bass Shakers that I did power with a SA70 amp. I had that amp blow twice and so I figured I needed to upgrade to the SA100. I got the SA100 installed and I turned it on, light went green, but when I turned my receiver on, it went red. I thought I was going to have to return the receiver until I talked to tech support. They said, "if you have extra speaker cable, rewire your run to your bass shackers. I put in new wire and I found that my home theater chairs smashed my old wire and cut into the casing and was causing my system to short. DOH!!! I put in new wire and it works great. I have two Aura Bass Shakers and I have my turned up to 2/3. I love that this receiver has a built-in reset because I probably would have blown the receiver with my short. Parts-Express is awesome.
Date published: 2014-10-09
Rated 5 out of 5 by from More than good enoughI purchased a 15" Pyle subwoofer a few weeks ago that recommends 400w rms at 4 ohms and advertised 1000w. I have been tinkering with electronics for many years but no expert either. I know what is advertised these days is not what speakers can really handle. I put the sub in a ported box. I hooked up a 50w @ 4 ohms plate amp I had already and was enough to move things but not enough to consider playable under normal conditions. So, I ordered the 100w into 4 ohms amp from PE knowing I do not like to put too much watts to speakers even though I was advised to use more power. Yes I could have put more watts but sticking to a budget too. Hooked it up last night and at half gain I shook the house with Pitbull playing. I believe if I played at max I would have started shattering windows but that is not what the intentions are. I wanted to be able to listen to the newer style of music heavy on the bass and not worry about blowing out the speakers or the neighbors. If I had a super quality subwoofer that really needed 400 rms at 4 ohm the amp would not be sufficient power. However, for this application the PE amp did its job and
Date published: 2014-08-28

Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
Dayton Audio SA100 100W Subwoofer Plate Amplifier

I purchased this amp to power a Clarksynthesis model TST209 transducer. The issue is the amp shuts off when the music gets louder or in a movie when a lot of low end is being used. Do I need a stronger amp or is there something I can do to this one?

Asked by: Radiojunkee
As long as you are only powering one transducer this should be a good match. If you are running it at high levels consistently you may consider bumping up the power to something like our SPA-250, that way the amp is running at about 50% during high levels.
Answered by: MattP
Date published: 2014-12-16

Hi ...Can I use a plate amp to a single subwoofer for each channel? I want separate right and left sub woofers. I want to use the "amp" inputs to the plate amp.  Thanks, Zene 

Asked by: Zene
Yes, you can use a subwoofer plate amplifier this way. Just connect the respective input wire to each subwoofer amplifier as if you were connecting a single channel source (like your receiver's LFE output). Then you can use the plate amplifier's volume and crossover controls to tailor the subwoofer output to match the rest of the main drivers for the most balanced sound.
Answered by: DaytonAudio_Rory
Date published: 2014-12-01

Will this unit deliver sufficient power to the Musica M800SW 8" In-Wall Subwoofer (100W RMS @ 8 ohms)?  And can this amp be wired in bridge mode to deliver more power to this one subwoofer?  If so, which speaker terminals should I use (L+ and R-, etc.)?

Asked by: Matchless
This is a mono amplifier and only has one output for the woofer. Even though you will get less output power at 8 ohms, this amplifier will still work well for that subwoofer.
Answered by: MattP
Date published: 2014-11-14

would that plate replace my klh model asw10-1000 sub woofer plate

Asked by: joeal61567
We do not have a cross reference available for this type of thing. Please contact our tech support for more help with this question, tech@parts-express.com or 800-338-0531 x1.
Answered by: MattP
Date published: 2014-11-03

Hi Techies at Parts-Express, I have a Polk PSW111 that the amp is blown out. Will this amp fit and work out with the Polk PSW111? Or which Dayton Sub Amp would fit the Polk PSW111 best? Thanks, Tom

Asked by: Tom Hawaii
Please contact our tech support for more help with this question, tech@parts-express.com or 800-338-0531 x1.
Answered by: MattP
Date published: 2014-10-24

Also I will be powering this with a sony str-hd 750 7.1.  Any Problems? Thanks, Kurt

Asked by: krollski
This amplifier is compatible with any 5.1 or 7.1 receiver that has an output for a subwoofer.
Answered by: Chrisf
Date published: 2014-09-29

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