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Dayton Audio SPA500 500W Subwoofer Plate Amplifier

Brand:|Model: SPA500
The Dayton Audio SPA500 Subwoofer Amplifier delivers the efficiency of a Class-D design, without compromising audio quality and reliability.
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Part # 300-807
  • High power Class-AB output stage for clean, controlled output
  • Patented tracking downconverter power supply for high efficiency
  • Toroidal power supply transformer
  • Low frequency parametric EQ allows you to boost or cut to custom-tailor sound
  • Advanced soft clip circuitry improves headroom and protects woofers
  • OTC™ (Optimized Thermal Circuit) protects amplifier from potential heat damage
  • Hercules heat sinks dissipate and control heat for extreme reliability

Product Details

Dayton Audio SPA500 500W Subwoofer Plate Amplifier

One of the most technologically advanced subwoofer amplifiers on the market today! The Dayton Audio SPA500 subwoofer amplifier is based on a state-of-the-art Class-G circuit topology that combines the proven high power, high fidelity characteristics of a Class-AB amplifier with a patented tracking down converter power supply to achieve an operating efficiency up to 86%. You get the efficiency of a Class-D amplifier without compromising audio quality and reliability. The Class-AB output stage provides the clean and low-distortion sound that audiophiles demand, without any of the instability problems that plague other high-efficiency amplifier designs.

This American-designed and engineered amplifier uses patented circuitry that continuously tracks the input signal to modulate or control the voltage available to the output stage. This "tracking" capability delivers the exact amount of power based on demand instead of constantly keeping it in reserve, so the output stage only draws the amount of power that is required at any given time. Less energy is wasted as heat, and more power is available for the subwoofer driver. With its enhanced thermal management, the SPA500 is an upgrade over previous models—making it a nearly bulletproof amplifier choice for today's demanding HT audio and music playback applications.

Specifications: • Rated power output: 273 watts into 8 ohms, 540 watts into 4 ohms with 0.92% THD (based on one-third power duty cycle) • S/N ratio: 98 dB (A-weighted) • Low-pass crossover: 30 - 200 Hz, 24 dB/octave • Input voltage: User switchable 115/230V (Euro cord available) • Dimensions: 11-15/16" W x 11-15/16" H x 5-1/4" D; Cutout dimensions: 10" W x 10" H.

Dayton Audio SPA500 500W Subwoofer Plate Amplifier
  • BrandDayton Audio
  • ModelSPA500
  • Part Number300-807
  • UPC844632015922
  • Product CategorySubwoofer Plate Amplifiers
  • Unit of MeasureEA
  • Product Rating
    (39 Reviews)
  • Weight20 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.

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Dayton Audio SPA500 500W Subwoofer Plate Amplifier
Dayton Audio SPA500 500W Subwoofer Plate Amplifier is rated 4.2051 out of 5 by 39.
Rated 5 out of 5 by from HUM fix, expensive or notI've had the hum problem on every Dayton amp I've owned, but understanding what causes it makes the fix easy or expensive. Some use the ground loop gizmo to kill the hum or I use a simple (say cheap) method. Go to your hardware store and buy a three into two line plug convertor ($2-3) and it's gone forever. For those who are lost, you have a plug at the end of your ac cord to plate amp that is a three three pieces of meta with the round piece a ground. The convertor essentially takes the ground out of the hook up. If you are really cheap, take the pliers and break the ground off (has the same affect) . Please don't reply with a thousand reasons why you shouldn't do this, most of my recent purchases of electronic equipment don't use the ground now.
Date published: 2014-05-31
Rated 5 out of 5 by from Great performance, excellent price.I am running this in a custom enclosure with a 500W DVC subwoofer, and it more than handles the sound to fill my entertainment room. Well worth the price.
Date published: 2014-04-07
Rated 5 out of 5 by from So far so good!So far this product is what I expected. Has a lot of features and has performed solidly so far with the PE Reference 10" in the new PE 1.0 ft^3 enclosure. Just enough power for that application. Had to do a lot of alterations to the sub box to get it to fit but my woodworking skills are up to that challenge. Have another smaller PE amp that developed problems after a couple years but unfortuneatley I think this is the case with most these Chinese sourced amps for bargain prices. Just hope this one lives a little longer. :)
Date published: 2013-11-05
Rated 4 out of 5 by from Solid Amp for the PriceI used this amp to power a Dayton Audio Ultimax 10in in a ~1 ft^3 sealed enclosure.My primary motivation in selecting this amp over the BASH 500W was the parametric EQ. Based on my simulations, without any equalization, this system would have an F3 of ~44Hz. Use of the parametric EQ does make a notable improvement to the system's bass extension. I have not taken measurements but my ear estimates the new F3 is in the mid to low thirties.Another reason I picked this amp over the BASH was that it looked like it would make a tighter seal. The BASH looks like a big PCB screwed into a plate; the components of this amp are fully encapsulated. In reality, it may ultimately be just cosmetics but having the components enclosed seemed more robust to me. I found that this amp does make a solid seal.A complaint I have is that this amp is extremely sensitive to AC electrical noise. When I put it on a power conditioner, the noise did drop out completely. But, if you want to plug this amp directly into the wall and your AC power is not clean, you might hear it.Another complaint I have is that the low pass filter slope is steeper than I would prefer. I own a different sub that with a 6dB/octave slope and it is much easier to blend. With a slope of 24dB/octave, if the low pass filter frequency is not set just right, it becomes very apparent that a subwoofer is in play. I probably would have gone with 12dB/octave.
Date published: 2013-10-21
Rated 5 out of 5 by from Suggestion boxI am in the process of my subwoofer project that includes the SPA500 and an RSS315HF. I haven't turned it on yet. The one thing that has occupied my time the most is recessing the plate amp into the back of the cabinet. I consider myself a fairly accomplished woodworker, but creating a template to route the recess for the plate amp has been particularly time consuming. I would like to see PE provide a router template for their plate amps as an option to make this process go more smoothly. Here's an opportunity for someone with a CNC machine.
Date published: 2013-10-14
Rated 2 out of 5 by from DOAThis was a drop in replacement for my original SPA500 12" Titanic kit which mysteriously died when nobody was home, receiver was off. (Very similar death to the description of the current recall on some PE sub amps.. too similar for me to not think they are somehow correlated.)First replacement I got (along with Titanic mk4) would play for 30 seconds then stop. It would recognize the signal and go from standby to ON but no output.Got an RMA and the second one works, for now. Disappointed that QA didn't catch that one as it ended up being over two weeks between me paying for the product to me having a working amp.Also a bit concerned that they use cheap components/construction with the first one failing like it did and the second being DOA..Probably would go with another amp and just replace my enclosure if I could go back and do it again.
Date published: 2013-09-26
Rated 5 out of 5 by from nice ampthis amp is powering 2 8ohm 10" perfectly. Parts Express did a great job getting me the amp
Date published: 2013-09-25
Rated 3 out of 5 by from you get what you pay forthe amp is powerful for sure. i dont like how on is also auto on. the sub sometimes thumps when the amp turns on during the movie. im not sure why they would have a 500 watt sub amp that shuts off after 10 minutes to conserve energy, if your running a 60" tv a 7.1 receiver, a blue ray and 500w 15"sub your not thinking about power consumption only performance its like being concerned about gass milage then buying a muscle car. also the EQ controls arnt labeled clearly like bandwidth .1-1? and no 80hz on the low pass i dont use it but still
Date published: 2013-09-19
Rated 5 out of 5 by from rejuvenated my old M&K MX90I swapped out my old M&K MX90 125 watt plate amp. It made the sub better than it ever was! I'll just call it a MX500! It slams with depth, speed and accuracy like never before! The sub already had the super fast deep bass woofer upgrade. The SPA500 had no humming issues and the auto on off works fine. It makes a thud when waking up but not enough to bother me when considering that it saves electricity. I'm impressed so far!
Date published: 2013-09-16
Rated 1 out of 5 by from Two have died on meI now have two expensive door stops. Both have blown on me, and the internal fuses are good... for what? They didn't protect this unit from going bad. I noticed now that the manufacturer has installed heat sinks over the amps, but mine did not have them. Considering my experience with this product, I have to wonder why they weren't put on to start with, and if the present ones are sufficent. I can only hope now that I can get replacement boards for these unit. Otherwise I will certainly shop somewhere else for a replacement amp. $500+ for 2 doorstops isn't in my budget.
Date published: 2013-08-25
Rated 4 out of 5 by from Better than the original?I just replaced the dead plate amp in my Polk PSW1000 (and judging from online comments, I'm far from the only one) with this unit and, so far, I'm happy with the results. It appears to be much better built than the original; I like the fact that it's sealed as opposed to the original - maybe it will last longer. I needed to do a little modification to the speaker enclosure for it to fit (a 1/2" drill bit and a jigsaw was needed), but nothing drastic was required. Now all I need to do is play around with the parametric equalizer settings (which the original didn't have) to get it sounding the way I want.
Date published: 2013-08-09
Rated 5 out of 5 by from Replacement for MFW-15Like many others I have went through 2 stock amps for my AVS MFW-15.I hooked this up with wirenuts, and using the LFE input set gain at 3 and rcvr at -7 output and calibrated to my other sub.. the MFW is better then ever imo...kicking hard watched SkyFall and the couch felt like it has buttkickers in it. It's keeping up with my EPIK Phoenix with ease... just becareful with gain, you could blow the stock driver, its only 3 ohms. One issue I have is it wont go into standby. Heatsink is only getting warm. Just do it.
Date published: 2013-08-03
Rated 5 out of 5 by from 100% Improvement over Old AmpI was one of the fortunate individuals to purchase some of Elemental Designs home theater equipment before they went under (tear). I have their 15" woofer horned setup and with the old plate amp it was pretty powerful by itself but under high stress the bass would be weaker and the plate amp obviously hotter.I installed this bad boy which it is a tad larger and had to make cut out adjustments but its nice to know if I ever decide to go bigger even the 1000W plate amp uses the same side cutout.This thing has a tremendous output improvement over the plate amp I had installed, it has really brought the sub-woofer to live hitting those low low notes that the movies put out especially during Django and The Dark Knight Rises.Highly recommend this amp, I have really put it to the test these past days and it barely barely gets warm...if that. Rattles my whole condo. Sorry neighbors :)
Date published: 2013-05-27
Rated 4 out of 5 by from Fits perfectly, sounds greatThis amp fits perfectly this heavy subwoofer cabinet, speakers and interface:Dayton Audio SWDC12 Dual 12" Subwoofer Cabinet Gray Vinyl2 x Dayton Audio DVC310-88 12" DVC Series Subwoofers, wired so amp sees 8 ohmsDayton wireless signal transmitter from source to sub input for convenience and eliminate humpros:-fits perfectly-clean low frequency reproduction-parametric equalizer to taylor signal specific to your speaker/enclosure-adjustments/controls simple-does not get hot-circuitry enclosedcons:-noneThis setup is remarkable and most listeners would be impressed and pleased. If I could do this again, I would consider subwoofers in a 4 ohm configuration, and possibly a more power, but few would complain with this amp's performance.
Date published: 2013-04-19
Rated 4 out of 5 by from Meets the specsUsing one of these to drive an original dayton audio Titanic 1200, does a great job in the 2 cube precut cabinet.
Date published: 2013-03-28
Rated 4 out of 5 by from A beast.This is a really workhorse. Certainly puts out a solid 500. I am running a Treo SSi 15", passively radiated with a Treo SSi 15" passive radiator in a custom inclosure I built. It destroys my buddy's pair of SVS subs. No hums or clicks. Love it. The Auto on sense feature maybe a bit to sensitive because it does not fully shut down very often, when my theater it shut down.
Date published: 2013-02-11
Rated 5 out of 5 by from Infinite Baffle Subwoofer Amplifier ApplicationAfter extensive research, I purchased this amplifier to power a pair of 12" subwoofers (4 ohm load total) in an infinite baffle subwoofer application for my home theater room. I have not been disappointed! I'm very pleased with the headroom of the amp; even after some "severe" exercise, the heat generation is much less than I ever expected it to be from a Class AB amplifier. I'm still adjusting the final setup of the amp but the notch filter and gain controls have already allowed me to dial in the performance of my system to maximize my room acoustics. Overall, very impressed with this amp and would certainly purchase again.
Date published: 2013-01-02
Rated 5 out of 5 by from Solid component & great value.I purchased the SPA500 to power my home subwoofer. The amp is driving a 15" Ascendant Audio Avalanche in a 2.2 cu.ft. sealed enclosure with no problems what so ever. The box is constructed of 5/8" walnut plywood over 3/4" MDF with cross bracing, weighing in at 125 lbs. The SPA550 looks and feels like a high end piece and performs like one also. The reason I chose this one over the other amps available was the standard parametric equalizer. This allows you to precisely tune your sub for optimum performance. It is MUCH more useful that a simple 6db boost feature offered on the other amps. As for power output, I have no doubt the unit is producing the claimed 500 watts. My sub is tuned with a small boost at 25 hertz and sounds fantastic with both music and movies. This setup easily trounces my Velodyne F1500 sub. Also of note, I have had no problems with ground loop issues or turn on 'thumps' of any kind. Amp runs silent and cool. I recommend this product!
Date published: 2012-12-27
Rated 4 out of 5 by from Oldies but goodiesI was surprised to see this amp back in stock. (Or I have not been looking for sub amps lately). I have had 2 of these amps for (guessing) about 10 years maybe longer. I run 2 each 18" pro type woofers (Fane) and have had wonderful results in my garage setup. I use a sealed 8cf enclosures with good results. I have never set up the EQ but set it at 0 instead. Both woofers make an outlandish amount of base, and the durability of the amps is exceptional.
Date published: 2012-12-10
Rated 5 out of 5 by from Great Amp!I have a 15" sub in 2.5 cubic foot box. This amp works effortlessly and is well made. I am able to have excellent response even at low volume levels.My only con would be the auto on thump. Pretty substantial. I have been through 3 plate amps over the past 10 or so years and with this one, I plan on leaving it turned off when not in use for prolonged periods of time.
Date published: 2012-12-07
Rated 5 out of 5 by from Shakes The Place - Nicely!!Probably should have bought the 1000watt version of this amp (you can never have too much power right?). I am powering a Dayton Audio Titanic 15 in a ~2.75 cubic foot box and it fills the room very nicely and is well matched to my mains and center channel (on a 3x300watts RMS @ 4 Ohm Adcom Amp). This sub amp runs cool and I have not detected any stress even when really pushing it. The Titanic 15 can move huge volumes of air and with this amp behind it, the result is VERY impressive.My only complaint, is that the auto signal sense turns off some times depending on the content (mainly at lower listening levels) with a resulting annoying thump when the signal hits the right threshold for the amp to power up again. It would be great if this amp had a 12 volt trigger option. Also there is no constant on so you are stuck with the auto sense even if you are savvy enough to build your own external trigger black box.
Date published: 2012-12-01
Rated 4 out of 5 by from A solid amplifierThe amplifier section is impressive. Low heat, high power, low distortion. The parametric EQ is indispensable. I have this coupled with a sealed enclosure and a high displacement driver to allow low frequency extension - and it has not let me down.Hum was present, and I understand that it is my wiring that is the culprit. No matter - This was solved with an inexpensive line level transformer that I had on hand. My real criticism for this amp is limited to it having bit more turn on thump than I would like, and the lack of adjustment for sleep mode. Actually, if it had no turn on thump, then the sleep mode would not bother me so much.If this could be corrected, and a variable phase control added - this would be a truly superior product. As it is the SPA500 is merely very good. Recommended.
Date published: 2012-10-14
Rated 5 out of 5 by from Excelllent subI purchased this to replace my blown Titanic sub amp. (This was the result of using a ground lift adapter to eliminate a ground loop. A storm caused a voltage surge blowing the amp, see below). It is a direct replacement. I've always been impressed with it's clean and defined sub frequencies. Since I use the LFE input I have not used the parametric EQ settings. I did have problems with a great deal of 60hz hum on the original amp and after extensive testing with this one, I purchased a Radio shack ground loop isolator. Problem solved and I now have the amp properly grounded through a surge protector.
Date published: 2012-07-29
Rated 3 out of 5 by from Good BumpsThis amp works just fine ,I hooked it up to a two sub box and it handle it very well just wish it would shut down with the head unit.
Date published: 2012-04-08
Rated 4 out of 5 by from Large old dbx 18" sub renovationWent on a forum with the intent of reconditioning my olddbx sub. It's about 10 cubic feet. Under the forummembers recommendation I put two Precision Ports andadded this amp. I was also going to put a new driver in.The cabinet modifications more that surpassed myexpectations. So I just added the amp, which was alsorecommended. I probably will put a new driver in eventually. The only thing I would change on the ampis a variable phase dial. This allows for more preciseroom placement. But, still the 0 or 180 degree is usuallysufficient.
Date published: 2012-03-10
Rated 5 out of 5 by from Excelent PerformanceIt replaced a defective Acoustic Research 500W amp and does a superior job. Currently driving a Dayton MKIII 15" subwoofer in the old AR cabinet. (The AR subwoofer went bad years ago.) It is a far superior unit now with the Dayton components.
Date published: 2012-03-06
Rated 4 out of 5 by from Seems spot on for surround appsAfter looking at this and other offerings at PE for a 500W subwoofer amp, I decided on this one since it wasn't exposed and it had a LFE input. While I was building my subwoofer, I found the same problem I've encountered with all my other hi end pro equipment in my house: I'm close to a radio tower and the electrical wiring isn't great here. I have to experiment with grounding and shielding with all my high current amps... by default they have humming or the radio station. I spent some time with experimenting with groundings and signal inputs to reduce hum...but I know that's due to my location and not the amp (which would be expected to pick up minute distortion at this high current). Anyways, I found this amp easy to install in my Dayton 3 cu ft cherry cabinet and TS Sounds 12" driver. At first I thought I wouldn't need the EQ portion of the amp...and mainly bought because it seemed to have quality electronics and a direct LFE. Since my reciever can output a stereo and LFE signal, I am now splitting a LFE and stereo signal to the amp. This is giving me absolute control in the crossover between my full range tower mains vs more limited surrounds. Overall, I'm very pleased with this amp. It gives me fine control, doesn't have useless options like speaker wiring, and seems to drive a high displacement driver very well.
Date published: 2012-01-24
Rated 5 out of 5 by from Bump your house !!!!!This amp is the real deal with that car audio super bass experience in your living room !!!!!!I actually own the older version of this amp and I have had it for over 3 years at least.. I have gone threw three 12 inch subs and All the times I did blow the sub was after a Saturday night party of 5 hours plus of hard bass slamming..I have absolutely zero problems with the amp except for a little bit of line noise that u can only notice when the amp has no signal.... This amp really completes the home theater experience and is incomparable to any other home theater powered subwoofer box !!! Vary highly recommend this amp also make sure u get a good 12 inch or 15 inch sub that can handle the power !!!Only thing it needs is that wireless remote controll !!! Maybe just and the IR and charge extra for the remote ??Thx for a great product I will be shopping at parts express again!!!Joshua James CA
Date published: 2012-01-09
Rated 5 out of 5 by from Lot's of powerThis amp has what you need! I built a box for this and the 12" dayton reference and it sounds really nice, makes my house rattle, specially my livingroom. The box that I built is 20x20 with a s type port (not sure how to explain the port) but it's 1.5" high and the width of the box and goes around on the inside, I made a few like this for car audio also.
Date published: 2011-11-29
Rated 5 out of 5 by from MFW-15 amp replacementAfter the amp in my MFW-15 died (whose hasn't?), I of course was looking for a replacement. I wanted a bit of an upgrade and wasn't interested in finding a new version of the stock amp. I was choosing between the BASH 500 and this one. I chose the Dayton because of the sealed back, the parametric EQ, and the torodial transformer. Due to the slot design, I knew I couldn't mount a new amp in the MFW. I considered building something to piggy back whatever I bought onto the back of the sub. With this amp, I didn't have to, I just rest it against the wall behind the sub. So far so good. I've only had the amp for a few days and we just watched our first movie (Episode 1 on Blu-ray) using it. It far outperformed the former stock amp and after the movie the heat sinks and back case were barely warm to the touch.
Date published: 2011-09-23
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Product Q&A

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Dayton Audio SPA500 500W Subwoofer Plate Amplifier

I see one answer that the sub-1500 would need modifications to the cabinet to fit. Any idea on ohms for the sub-1500 Is it two or 4 or 8 ohms. Thanks

Asked by: Edzzed
The woofer in the Dayton SUB series subwoofers are 4 ohms.
Answered by: MattP
Date published: 2015-03-24

Would this amp run 2 10” 4Ω Subwoofers with the Power Handling: 250W – 750W each? If so should I run them parallel or in series?

Asked by: JohnNorman
Yes it would but you would have to run them in series effectively halving the output from the amplifier (~250 watts total, 125 to each woofer). You might want to use the 1000 watt model which will provide about 250 watts RMS into each woofer wired to 8 ohms.
Answered by: MattP
Date published: 2015-02-13

What are the high pass filter characteristics for this amp? Why is there no information given for this in the specs?

Asked by: sawtooth64
Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2015-01-19

Will this cleanly fit and easily replace the amp on the Dayton Audio SUB-1500 15" 150 Watt Powered Subwoofer (Part #300-634)? 

Asked by: Marek1235
This will not fit that amplifier cutout without modifications to the enclosure.
Answered by: MattP
Date published: 2015-02-17

I own two of these amps and want to use them in a stereo set up with two subs. For the right channel, do I use just the right input and leave the left RCA open?   For the left channel, do I use just the left input and leave the right RCA open? 

Asked by: Mijknarf
You can use either input on either amp, it will not matter. If you have a preout that has LFE capability, you can just use the LFE input on both and get the same effect.
Answered by: MattP
Date published: 2014-12-23

I assume this amp is not 2 ohm stable?

Asked by: EthanB
Correct. 4 Ohm stable.
Answered by: TomI
Date published: 2014-12-16

hello I would like to know the rms power thk

Asked by: oligasu
This amplifier produces 500 watts RMS into 4 ohms.
Answered by: MattP
Date published: 2014-11-25

When using the LFE input it bypasses the internal crossover. What is the useable high frequency limit of this amp? I want to use it in a high power active speaker to drive the mid bass, and need it to reach 400hz or higher.

Asked by: Ryanroehl
These amplifiers have a built in low pass set at about 200 Hz even with LFE in use.
Answered by: MattP
Date published: 2014-11-19

What is the bonus with this? And, also.... do we need to put a port-hole with this to help with heat if we are completely installing this in an enclosed sub-box (bought from parts express also)?

Asked by: realist
The bonus item included is a Dayton Audio ball cap which you can see here: the heat that this amplifier creates is transferred through the plate and heat sink, so venting is not required. You just need to make sure there is sufficient air flow around the amp itself in the room to prevent heat build up.
Answered by: MattP
Date published: 2014-11-12

Would this fit in an Epik Phoenix?

Asked by: Gregbart
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: 2014-11-10

Hi, Do you ship to Australia? Thanks.

Asked by: drawing
Please contact our sales and customer service for available stock, price and shipping options. or 800-338-0531 x2.
Answered by: MattP
Date published: 2014-10-28

Could you tell me if the Daytona SPA500 could go with two pioneer ts- w304r thank you Mr Sauvignon Belgium

Asked by: sauvignon
Yes it will work for those woofers as long as they are wired in series for an 8 ohm load.
Answered by: MattP
Date published: 2014-10-27

hello, Is the Daytona 500 SPA operates on a 220v alimentaion if so what should I use as accessories to operate this product Thank you in advance for your reply. Mr Sauvignon Belgium

Asked by: sauvignon
Yes this will operate on 220v. You will need to pull the fuse and replace it with a 4A type, then re-install it flipped 180 degrees. You will also need a power cord plug adapter.
Answered by: MattP
Date published: 2014-10-27

I have read that part of the protection circuit is a HPF at ~19hz. Is that true? My passive radiator design needs such a cut so that an explosive burst of 18hz doesn't blow the radiators out the sides. Thank you.

Asked by: intrepidpursuit
Yes that is true.
Answered by: MattP
Date published: 2014-10-20

What's new? it says this is an "UPDATED" version and I have the model from roughly 5 years ago. I want to go to a stereo sub setup ( ie considering another) . The specs look the same and I'm wondering if there's anything major I need to consider.

Asked by: BrooklynJeff
The upgrades include the heat sink and updated protection circuits. The amplifier output and sound will be no different than the older model.
Answered by: MattP
Date published: 2014-09-02

What kind of warranty does this amp come with if any?

Asked by: t0mmyr
This amplifier will have a 1 year warranty when purchased brand new (not refurbished).
Answered by: MattP
Date published: 2014-07-28

Hi! How do you change it to 220 volt from 110volt?

Asked by: Alexander1234
This is 110 volt out of the box. No modification is necessary for 110 volt operation.
Answered by: Chrisf
Date published: 2014-04-14

How does the auto on/off work.

Asked by: Jerry09
When the receiver sends a low voltage signal through the subwoofer output, it acts like a trigger to bring the amplifier out of standby mode. Once this low voltage source (receiver) has been turned off, the amplifier will go back to standby after 10 or 15 minutes.
Answered by: MattP
Date published: 2014-02-20

Are the power ratings (273 watts into 8 ohms / 540 watts into 4 ohms) peak ratings or RMS? If peak, what are the RMS ratings into 8/4 ohms? Thanks

Asked by: mlundy57
These are both RMS ratings.
Answered by: MattP
Date published: 2014-02-06

Should i switch a jumper or something for 230v opeartion?

Asked by: Mike007
In order to be used with 230v power, you will have to pull the fuse holder out and rotate it 180 degrees. You can see page 3 section 3 of the manual for these instructions.
Answered by: MattP
Date published: 2014-01-06

The overall depth of the product is 5 1/4". I am assuming this includes the height of the heatsink? How much clearance is required behind the plate? (ie not including the height of the heatsink)

Asked by: grtx
The depth of 5-1/4" is actually the mounting dept, allowing for about 1/4" of clearance for the wire leads out the back of the case.
Answered by: MattP
Date published: 2014-01-02

Power rating

I see Subwoofers/amps rated showing "continuous" and "peak" power figures, (such as the HSU subwoofers). How do the SPA500 amps power rating relate to these power ratings?
Asked by: ckab
Continuous power, peak power, RMS power, program power, & on and on. Many different methods of rating power. You must review the conditions associated with the ratings. Impedance, total harmonic distortion are important. To answer your question simply compare like with like.
Answered by: Nitnub
Date published: 2013-10-28

Can the rear case of the amp be removed to decrease the mounting depth?

Asked by: adamand
No because the rear cover protects the amp's sensitive components. Caps,diodes, etc.
Answered by: Booth man
Date published: 2013-10-04

Recommendations for amp replacement off of a KEF PSW 4000

I have a 10 year old KEF PSW 4000 with a blown amp. I'm a noob when it comes to this stuff and i am looking for recommendations to replace mine. This Dayton or one of the other plate amps? or would a external amp be better? Below are the spec from KEF site. I have read elsewhere that it is a 4ohm driver.Specification: Model PSW4000System type: Active subwooferEnclosure type: ReflexDimensions (H x W x D): 465 x 495 x 495mm (18.4 x 19.5 x 19.5inches)Weight: 38kg (83.6 lbs)Drive Unit: 300mm (12”) long throwAmplifier: 500WFrequency response: 25Hz to 250Hz +/-3.0dB (-6dB at 22Hz)Maximum output: 110dBFinishes: Black Ash, Maple or Cherry real wood veneersSystem: SP3383Drive Units: B300 bass unit (SP1517)Amplifier: SP2433
Asked by: pck1729
This amplifier would be a good choice along with any of our 500 watt models. The Dayton offers a parametric EQ to help flatten room response which is always helpful with subwoofers. There will likely be cabinet modifications required for any after market amp to fit in the existing enclosure.
Answered by: MattP
Date published: 2013-09-27

Can the input high pass filter be modified to provide a fixed amount of boost at very low frequencies?

The Bash amps have a bass boost table that give you the values of two resistors to change and increase output by a fixed amount and Q at different frequencies below 30 hz. Do you have a boost table and instructions for this amp? This would leave the built in variable EQ for room correction.
Asked by: BOBinGA
Performing anything electronic is a matter of components and abilities. The short answer is no. The long answer is yes, you could if you could modify the original design.Since you desire using high pass for low boost it would require complete redesign
Answered by: Nitnub
Date published: 2013-09-24

how do I connect SPA500?

What connector would I need in order to upgrade an M&K MX-90 plate amplifier? The M&K has a strange looking multi-pin white connector. The M&K driver is the upgraded super fast deep bass driver. Lastly would this or the SPA 1000 be the better amp as an upgrade - price not being an issue? I noticed that your version of a dual opposed 12" sub uses the spa1000. I'm a newbie at DIY and any advice would be helpful.
Asked by: satiety77
The wires to the driver would either be 2 or 4 wires depending on single or dual voice coils, depending on resistance you would either wire them in series or parallel.
Answered by: theelviscerator
Date published: 2013-08-27

Indicator light relocation

Is it possible to either relocate or add the indicator light to the front of the sub cabinet? Has anyone ever done this?
Asked by: Basshunter
yes,very easily,do you not trust the amp to go to standby? my amp isn't mounted in cab.
Answered by: unk1
Date published: 2013-08-07

Heat Sync

I see in the video of this product that it doesn't have heat syncs. But in the product picture it does. Which is correct?
Asked by: JimCan
The heat sinks are in front and they are small but for its output rating and modern curcitry it should be just fine for effincey Good luck with your project. Oh, and make sure there will be plenty of space for air movement.
Answered by: Booth man
Date published: 2013-07-10

What is the slope of the low pass filter?

I want to run this with a sealed enclosure having a 12dB/oct high pass filter with an -3dB at 80Hz. I want smooth integration.
Asked by: Brinkman
Upon closer examination, I found the answer:"Low-pass crossover: 30 - 200 Hz, 24 dB/octave"
Answered by: Brinkman
Date published: 2014-04-25

Is the parametric EQ bypassed when using the LFE input - as the crossover circuit is bypassed? Or does the EQ still function when using the LFE input?

Asked by: mcsyber
It is my understandind that this input is for sub lows that have been processed and as such these features ate bypassed.
Answered by: Nitnub
Date published: 2014-06-12
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