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.
In Stock
List Price$149.99
Regular Price$94.80
You Save10%
Sale Price
Part # 300-802
  • 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)

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
    (140 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 4.5143 out of 5 by 140.
Rated 5 out of 5 by from The Perfect UpgradeI have used four of these. Two in factory rebuilds and two in new three way with amped subs. Just make an adapter plate or any modification desired in a factory sub and use this amp. Factory amps have no large external heat sinks for the output drivers because they just don't put out the claimed power. These will do the job for most applications.
Date published: 2015-10-10
Rated 5 out of 5 by from What I expectedBought this plate amp to resurrect an older Sony 12" sub. After I removed the back amp housing from the old sub I made the cutout and installed the SA100, it was pretty easy. I am impressed with the performance and all the functions work well.
Date published: 2015-09-23
Rated 4 out of 5 by from Drop-in improvement over the SA70I recently purchased one of these at the sale price, because the SA70 I had been using wasn't quite cutting the mustard driving an Audio Concepts SR10 woofer (4 Ohms) in a .7 cu. ft. sealed enclosure. It fits the same cutout and the screw holes line up exactly.It surpasses the SA70 in delivering a bit more "oomph" to the woofer, and most importantly in having a steeper lowpass filter slope -- 4th order as opposed to 2nd -- which allows it to "get out of the way" quicker. Less midrange info is coming from the subwoofer, which makes it much easier to dial in the crossover to the main speakers.Connectivity is slightly improved over the SA70, but here is where my few minor ergonomic gripes come in:Instead of the hinky press-pinch speaker level connectors of the SA70, which are too small even to accept standard pin connectors, we have a set of fairly dinky binding posts with plastic tightening nuts. These have thin shafts, accommodating small spade lugs, with small holes cross-drilled through them, barely big enough to accommodate twisted ends of 16ga stranded wire. They are jammed too close together to accept standard-spaced dual 'nanners, but will accept single banana plugs (which I have on order). And they are crowded right up against the frequency and level controls above and the heat sink fins below. Trying to get your fingers in there to connect bare wire ends or small spades, and tighten down the nuts, is thus a bit fumbly.For the line-level inputs, you have to connect both the right and left channel RCAs to get the bass from both channels. This is fine if your preamp/receiver has stereo pre-outs, but if you have a single summed sub out you will need a Y-adaptor to split the signal again to two channels.I have had no reason to try either the speaker-level or line-level outputs. No point passing a signal through doubtful electronics when you don't have to.Overall, my subwoofer now plays a bit louder/cleaner, and integrates better with my main speakers, than it did with the SA70 amp in place. This is NOT to diss the SA70, which would be just fine for a smaller or more efficient sub driver, as in a desktop system. I'm saving mine for just such a project later.
Date published: 2015-09-01
Rated 4 out of 5 by from good sound !Replaced my semi working klipsch amp , that worked when it wanted to. so far this one has enough power behind it to push the 12 woofer ! Still playing with it and the settings . but cool so far
Date published: 2015-05-24
Rated 5 out of 5 by from Works well helped put a subwoofer back in serviceI had a pioneer subwoofer that was part of a soundbar assy puloled the old amp out put this one in hooked it up to amp and started enjoying.
Date published: 2015-05-24
Rated 4 out of 5 by from Great product!I bought Dayton Audio SA100 to replace my dead PSB 5i. I am pleasantly surprised by great sound power and quality. Installation was easy and smooth. There are minor drawbacks:1) Speaker connectors were different sises and I have to replace them.2) There is loud click first time you power it.
Date published: 2015-04-27
  • 2015-11-29T07:05CST
  • bvseo_cps, prod_bvrr, vn_cps_3.1.6
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_140
  • loc_en_US, sid_300-802, PRD, sort_mostRecent
  • clientName_PartsExpressInternational

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  for a prompt reply.
Dayton Audio SA100 100W Subwoofer Plate Amplifier

Dear SIrs, Recently purchased this plate amp and am very pleased with it. Quick question about the frequncy range. Can this unit be modified by Dayton to extend the range to 30 cycles/second? I've got speakers and CD's that extend that low.

Asked by: frankwhop
This amplifier already plays down to around 18 Hz where the subsonic filter kicks in. The crossover frequency listed is for the low pass, meaning it plays from that frequency and down.
Answered by: MattP
Date published: 2015-11-09

Does it have an LFE input? or how should i plug it to my 5.1 receiver?

Asked by: Sonix
This does not have a dedicated LFE input, you will just have to use the left or right line level input.
Answered by: MattP
Date published: 2015-11-12

Will this unit replace the PSW 110 subwoofer amp plate or do u have a replacement for it?

Asked by: Anonymous
We do not have a cross reference available for this type of thing. Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2015-10-26

Will this fit into the pre-cut hole in a Cambridge Soundworks BassCube 12?

Asked by: Gary David
We do not have a cross reference available for this type of thing. Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2015-10-12

If I am using the mono "subwoofer out" from the receiver how should it be connected?

Asked by: zache
You will want to use either of the two line level inputs on the amplifier, it won't matter which.
Answered by: MattP
Date published: 2015-09-14

I have an acoustic audio 5.1 system w the following in wall subwoofer: HDS10 Passive Sub: 10” Subwoofer 300 Watts Peak Power Handling each / 150 Watts RMS Power Handling each Frequency Response: 26Hz – 200Hz (+/- 3 dB) would SA100 be sufficient?

Asked by: kjpnow
This requires a bit more information in order to proceed. Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2015-08-17
  • 2015-11-29T07:44CST
  • bvseo_cps, prod_bvqa, vn_cps_3.1.6
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_97
  • loc_en_US, sid_300-802, PRD, sort_recentQuestionsFirst
  • clientName_PartsExpressInternational
Get Deals
emailed to you every week.

Be the first to hear about new and exciting products,special pricing and incredible deals!

See This Week's "GET DEALS" Email
Get Sales Flyer
Parts Express
725 Pleasant Valley Dr.Springboro,OH 45066USA

© 1986-2015 Parts Express, All Rights Reserved

Live Chat Software