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.  
Due In: 4/15/2015
List Price$149.99
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Your Price
Buy 4-up$89.80
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, 210 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
    (133 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 4.5113 out of 5 by 133.
Rated 5 out of 5 by from Perfect fit for my KLH subwooferRather than replacing my KLH subwoofer, I replaced my burnt out Plate Amplifier for this one. It fit perfectly down to the screw holes. So is it made by the same company who supplied the original one, who knows? All I know is that it saved me over $100 to buy another subwoofer.
Date published: 2015-03-15
Rated 1 out of 5 by from poor reliabilityThis is my third amp in three years, within warranty once, repaired and failed. Auto on feature burns out over and over. I hope this newer design is a better experience. Great when it powers up. I don't feel like building a new enclosure to fit a different amp at this point.
Date published: 2015-03-09
Rated 4 out of 5 by from Good Replacement AmpBought this to replace a bad amp in my Athena AS-P400. The Athena was rated at 100W RMS / 400W Peak, so this being 100W RMS at 4ohms seemed like a good match. It works reasonably well with a few quirks:First it seems a bit less powerful than the Athena was. At high volumes there is a bit of distortion. Second, on the Athena I was able to attach a single low-level input to make it work. For this amp you must connect two low-level inputs to get it to operate at full power. Lastly, the variable frequency cutoff is not as clean as I'd like it to be. I feel like I have to turn it to a lower frequency than I should in order to get the cutoff I desire, then turn the gain up to compensate for it.Once I got it adjusted, it is suiting my daily needs and was a good purchase for the price. It definitely beat paying $400+ for a new subwoofer, but I don't think I'd recommend it for hardcore audiophiles.
Date published: 2015-03-05
Rated 5 out of 5 by from The unit has excellent Freq Control and Power.I have only owned the unit for a few weeks thus far. The unit has excellent Freq Control bringing the sub-lows out and up to being able to here the whole Bass Guitar if that is what you personally enjoy. The Gain control works well also. I mounted my unit separately in a 2-sided tilted box and it sets on top of the speaker box. This makes it easy to adjust the amp when you change sources of music. It also allows it to breathe and cool easily. I replace a poorly designed JBL PS-12 amp with this unit, covering the hole left with 5/8 Plywood with a Rubber-Gasket. The new unit sounds much improved over the JBL. For the cheap price it appears to be a good value decision thus far.
Date published: 2015-03-01
Rated 5 out of 5 by from dayton audio sa100I purchased this amp to use with a clark synthesis thumper on my drum throne, it works perfectly!
Date published: 2015-01-23
Rated 5 out of 5 by from Very satisfied!High and low level inputs allow me to use this product in different applications.The gain and roll off adjustments worked fine. I had a question on hook up and customer service provided me the info I needed. Sounds great!
Date published: 2015-01-21
  • 2015-04-01T07:05CST
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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

Would this amp be a decent fit for 2 ADX Maximus shakers in series? Or should i be looking at a bigger amp?

Asked by: ambienthtc
Two of those transducers in series will only receive about 25 watts from this amplifier. I would recommend our Dayton APA150 or SPA250 for a pair of these.
Answered by: MattP
Date published: 2015-02-23

I have a 1986 vintage Miller & Kreisel V3B subwoofer that has a blown amp. The current amp has a plug from the speaker to the amp (6 wires ??). Do you include wiring instructions from the speaker to the amp? I'm not familiar w/"speaker driver" wiring.

Asked by: lee5106
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: 2015-02-18

Do the low level out puts Have high pass filters to match low pass frequency? Or do the satellite speakers operate full range?

Asked by: antos
The high level outputs have a fixed high pass filter at about 150 Hz first order assuming an 8 ohm load.
Answered by: MattP
Date published: 2015-02-12

is this a direct replacement for my JBL SUB125 ?  Is it suitable ?

Asked by: Johnny1976
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: 2015-01-28

Hi, can this part be used in place of Velodyne CT-120 amp plate to drive 12" sub? Thanks.

Asked by: Kavi
As long as the woofer is 4 ohm this will work, although it will probably require cabinet modifications in order to fit properly.
Answered by: MattP
Date published: 2015-01-19

Will this amp fit in the cabinet of a Dayton SUB-120 without much cabinet modification?

Asked by: KayCee
We have not tried this, so we cannot officially say whether it will work. Of course, this type of modification to an existing product to accommodate a different amp than it was designed for will void your warranty. Some amount of modification would be necessary - any type of air leakage from the enclosure (except air movement thru the port) will generate extraneous noise and diminish the enclosure's effectiveness.
Answered by: DaytonAudio_Rory
Date published: 2014-12-31
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