Dayton Audio SPA250 250 Watt Subwoofer Amplifier
Dayton Audio SPA250 250 Watt Subwoofer Amplifier

Dayton Audio SPA250 250 Watt Subwoofer Plate Amplifier

Brand:| Model: SPA250
Product Video
Engineered to provide flexibility, ample power, and reliability, the Dayton Audio SPA250 delivers high fidelity subwoofer amplification and is tailored for home audio and home theater audio systems.
  • Switchable 6 dB @ 35 Hz bass boost
  • Mono Class AB output stage for solid, well defined output
  • Low-level and high-level inputs connect to any system
  • Manual, auto, or triggered on/off modes for compatibility with any automated system
  • Variable gain, crossover point and switchable phase controls optimize room integration
  • Switchable 120/240V input voltage
  • Energy efficient—draws less than 1 watt in stand-by mode
Part # 
Weight: 13.4 lbs.  
Regular Price$139.80
Sale Price
Part # 300-803
Qty:  EA
Available Payment Methods

Product Details

Dayton Audio SPA250 250 Watt Subwoofer Plate Amplifier

Bass boost or flat…you choose and the SPA250 delivers!

The Dayton Audio SPA250 subwoofer amplifier produces 250 watts of clean power output, and combines with a host of flexible user options to make it an unbeatable choice. A user-configurable bass boost circuit creates a 6 dB peak at 35 Hz, which allows sealed subwoofer designs and certain ported enclosures to achieve their optimum bass extension and maximum "flat" output.

Connects to almost any home audio system, and does it with ease

The SPA250 features RCA line level and banana jack speaker level inputs and outputs, automatic power-on that is triggered by any audio input signal, and a phase reverse switch to match the subwoofer to your room and your other speakers. A single amp can accept a stereo input signal and combine it into mono, which is preferred for sub bass reproduction. A preamp or receiver's LFE output may be connected to the SPA250's Left (mono) input. The internal low pass crossover is fully adjustable between 40 and 180 Hz, and of course the amp has built-in protection against internal and external faults.

We haven't run out of great features to talk about

• Variable low-pass filter at 24 dB/octave attenuation from 40 Hz ~ 180 Hz
• Switchable phase 0° (NOR) or 180° (REV)
• Variable gain MIN/MAX input voltage dependent
• Speaker level high-pass outputs 6 dB/octave at approximately 180 Hz @ 4 ohms, 90 Hz @ 8 ohms (i.e. 220 uF electrolytic capacitor)
• Line-level full bandwidth (10 Hz- 20 kHz) outputs/throughputs for adding or "daisy chaining" additional amplifiers
• Subsonic filter 12 dB/octave high-pass filter centered at 20 Hz
• Damping factor at rated power: 114 @ 100 Hz

Specifications: • Measured power output: 156 watts RMS into 8 ohms @ 0.1% THD, 252 watts RMS into 4 ohms @ < 1.0% THD • Signal to noise ratio: 90 dB A-weighted • Input impedance: 10.4K ohms • Bass boost: Switchable, 6 dB @ 35 Hz • Low pass adjustment: 40 Hz to 180 Hz • Phase adjustment: 0º (normal) 180º (reverse) • Power requirements: Switchable, 115/230 VAC, 50/60 Hz • Dimensions: 9-13/16" W x 9-13/16" H x 5" D • Cutout dimensions: 8-1/2" W x 8-1/2" H.

Dayton Audio SPA250 250 Watt Subwoofer Plate Amplifier
  • BrandDayton Audio
  • ModelSPA250
  • Part Number300-803
  • UPC844632094897
  • Product CategorySubwoofer Plate Amplifiers
  • Unit of MeasureEA
  • Product Rating
    (152 Reviews)
  • Weight13.4 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 SPA250 250 Watt Subwoofer Plate Amplifier
Dayton Audio SPA250 250 Watt Subwoofer Plate Amplifier is rated 4.4605 out of 5 by 152.
Rated 4 out of 5 by from Nice Amp But Careful With SizeI bought this for a blown Hsu VTF-2 MK3 unit instead of paying double the price for a new Hsu amp. The base plate overall is abut 3/16 shorter than the Hsu cutout, so the exact holes don't match and you have put in screws at an angle to assure a tight fit. It's still a good option but be aware of the inexact fit.
Date published: 2015-03-13
Rated 2 out of 5 by from Quality Control IssuesI ordered this product to replace the amplifier in a 12" Cerwin Vega sub that expired. Right out of the box the power cord did not fit the socket on the amp. Plenty of other reviews state the same issue. I used the cord off an old computer power supply and connected everything to test it before hacking up my enclosure to mount it. Immediately I heard lots of popping, crackling, and midrange frequencies making it through the crossover. PE was great at replacing the faulty product with no hassles. The second amp arrived with the exact same power cord issue. PE really needs to call up the factory in China and get the right cords then repackage the ones they currently have in stock to remedy this issue. This time the amp did work as intended and seems to have plenty of power. Now it's time to cut up my box to make it fit.
Date published: 2015-03-01
Rated 3 out of 5 by from You get what you pay for.I purchased two of these to run 3 Aura bass shakers each. One has a hum, one is silent. Both of them had power cords that literally fell out of the socket if not held in. I had to use two other cords that ended up fitting snug. Overall, they performed well for the money and application. These are budget amplifiers, and the quality unfortunately reflects that.
Date published: 2015-02-17
Rated 5 out of 5 by from Powerful amp!I just recently purchased this amp and let me just say I was very shocked from the power it pushes to my 15" power bass sub! Rockin the house!
Date published: 2015-02-12
Rated 5 out of 5 by from Great Replacement AmpI have an old Dayton SUB-100 and the plate amp finally died, the SPA250 fits it perfectly without mods! The 250 watts breathes new life into this cheap sub, the old amp was only rated at 125 watts. There is a slight hum but it's very faint, my old plate amp was worse. They must of fixed the power-cord because mine is tight, I had to force it into the socket.What it comes with:Screws, foam tape insulation, 5ft power cord.P.S. the SPA250 will also fit the Dayton SUB-120.
Date published: 2015-02-10
Rated 5 out of 5 by from Easy and Solid!I built a 3.1 cubit foot box, w/ a 3 in. long 1.5 in. diameter tube vent to tune to approximately 29 Hz using the DC305-4 12 in. Dayton subwoofer. It sounds much better than my Acoustic Research 12 in. subwoofer. I have had it about one month and very pleased with it.
Date published: 2015-02-08
Rated 2 out of 5 by from SPA250 plate ampI bought this two weeks ago and return it today for exchange. The amplifier is not working.
Date published: 2015-02-07
Rated 4 out of 5 by from mine has a slight hum when turned on.Ordered this and received it the next day, very fast shipping. This amp has a slight hum when turned on , I tried plugging it in various wall outlets as the instructions suggested but could not get rid of the hum. The amp does play very well and I am sound quality is good.
Date published: 2015-02-05
Rated 5 out of 5 by from SAP250 Plate AmplifiersI decided to go with (2) SAP250 Plate Amplifiers for my RTi A7 Polk as their sub driver amps and for the price the performance is more than I had hoped for. This is a good mate to my towers and am glad I went with the SAP250 Plate Amplifiers.
Date published: 2015-01-29
Rated 3 out of 5 by from mixed feeling with this ampMy old HSU VTF2 MK2 Sub amp died after close to 10 years. I bought SPA250 to replace it. It's very easy to install. After it's turned on, there's always a slight rattling sound turning up the volume. I can't figure out why it makes this noise. Since I dont turn the sub all the way up, at lower volume, it's low enough that you can barely notice it.I dont know if anyone else has the same issue, or if I have a faulty unit.
Date published: 2015-01-26
Rated 5 out of 5 by from Great so farI the replaced the bad amp in my Cerwin Vega LW12 subwoofer with the SPA250. (I had to enlarge the opening to fit the new amp.) The new amp sounds great - a lot better than the original CV, I think.
Date published: 2015-01-15
Rated 4 out of 5 by from Power Plug Falls OutAmp works great, but he power plug is a joke. Doesn't fit well enough to maintain itself in the amp, easily falls out when sub thumps. Called Tech Support and was told there all that way, that's kinda knowing there's a problem and not addressing it. I was offered another cord with the same problem as a fix. There is a DIY fix, using an old very small screw driver grind the tip to a sharp needle, now with the cord unplugged, insert the sharp needle end into the female amp end contact and pry it over enough to touch the other sides contact. You'll end up with what looks the be a triangle in the plug, do this on both contacts. Now apply a 1/8" bead of silicon adhesive around the male portion on the amp plug about 1/4" up from the bottom, insert plug into amp and allow to sit in position over night. It's now good to use without falling out or loosing power contact because of the very loose fit.
Date published: 2015-01-14
Rated 4 out of 5 by from SPA250 TO REPLACE HSU SUBThe Dayton SPA250 Plate Amplifier was purchased to replace the defective HSU original VTF-2 amplifier. I had been in contact with HSU and they do not do any repairs and suggested purchasing a newer model Sub. When I inquired about another manufacturer amplifier they said the size cutout would be a problem and the cross over circuit may also be a problem depending on the amp. I should add that HSU is a very good company to work with, is a very good Sub , and their Technical Staff assistance is excellent. The Dayton amp fit perfectly and I used the original screws. I find no problem with the cross over frequency and I have switched the boost into the On position and I am using one plug. How does it sound ? probably 95 percent as good as the original at a replacement cost of 75 percent less than a new HSU Sub
Date published: 2015-01-13
Rated 5 out of 5 by from Replaced a HSU subwoofer amp!I have an older HSU VTF-2 subwoofer that had gone kaput. HSU wouldn't repair it, but they would sell me another amp (for more than I paid for my Dayton Audio amp), and the cabinet would need to be modified to accept the new one. This one from Dayton Audio fits right in, with the screw holes even matching up! The repair/replacement took less than 10 minutes, and the results....well, it sounds at least as good as when new.
Date published: 2015-01-08
Rated 5 out of 5 by from nice amp!Bought this to power a 15" Cerwin Vega 152.2 sub. (2ohm/DVC, wired as a single 4ohm speaker since this amp is advertised as stable only to 4ohm. I'm using the low-level inputs; I haven't tried the high-level inputs or outputs.)Works great. I haven't cranked it to see how loud is possible, but I had it up louder than I would normally use it, and the fins on the heat sink only got mildly lukewarm. No noticeable noise over the speaker or from the amp itself.I love the variable low-pass filter; that was one of the reasons I chose this amp. It makes it easy to blend well with the higher-frequency amps and speakers.I used a Kill-A-Watt to measure power usage (on the AC side). At idle, it was drawing 22W, 0.3A idle, so you'll want to have it power off when not in use. The peak I saw in full use was 87W, 0.87A. Even if I crank it as loud as I will ever want, I doubt it will more than double that.The auto-power switch seemed to work well to turn on. I didn't see it turn off, but I think I read it takes something like 15min of inactivity before it will shut off, and I haven't waited that long in my testing.It's true that the left/right inputs are blended into the single powered channel (the wires going to the sub). If your input is a single line-level channel (as mine is), you could just turn up the gain to get more power, but I'd recommend doing what I did: use a Y-adapter to send the same signal into both inputs. I got some solid Y-adapters (i.e., no cords) that have one female input on one side and two male outputs on the other side, and it plugs in perfectly to the two line-level inputs.
Date published: 2014-12-29
Rated 5 out of 5 by from Works greatworks exactly as expected. Arrived quickly. Great purchase
Date published: 2014-12-24
Rated 4 out of 5 by from Solid unitI couldn't find the exact size of plate amplifier so I chose this one that was close. It required some cabinet modifications, but now it works great. I am very pleased with the deep bass sounds.
Date published: 2014-12-24
Rated 5 out of 5 by from What a difference this amplifier makesMy pasive DBX subwoofer has come back alive after 25 years.This subwoofer was build like a rock and worked for years being driven by the main amp, but adding this subwoofer amp has turned the 15" double spool woofer in a woofer that shakes the room when turning up the volume.Highly recommended.
Date published: 2014-12-14
Rated 5 out of 5 by from Amp for Velodyne 3750My Velodyne amp died and this was the perfect choice! This plate amp is well made with a real quality feel to the control knobs, etc. I installed this in my Velodyne 3750r and it fit like a glove!! All 12 mounting holes lined up for an easy installation. Listened to it for an hour last night and I'm very pleased, this amp has more power than the original! Can't wait to listen to the next Blu Ray movie in DTS 7.1!! Awesome product!
Date published: 2014-12-02
Rated 5 out of 5 by from Replacement Amp for Velodyne 3750RInstalled this amp last night and I'm amazed with this product. From shipping, packing to installation. All the mounting holes lined up exactly, you would have thought it was made for the Velodyne 3750. All the controls have a quality feel to them. This Amp drives my sub better than the original amp and I can't wait to watch a blu ray with the kiddo's and shake the living room again!! Great Product!!! 5 Stars!
Date published: 2014-12-02
Rated 1 out of 5 by from NoisyBought this and tried as a replacement for my outlaw LF1. Sounded muddy compared to original. After about a day unit started making random thumps even when uuplugged from the receiver. Hooked up a second sub to check if it was the incoming power and no issue with that sub. contacted tech support and returned. Great return policy from Parts Express! just disappointed in the Dayton product.
Date published: 2014-11-21
Rated 5 out of 5 by from More Than SatisfiedI can't give this amp enough compliments. I bought this because I have wanted a new sub for years and I figured it is dumb to pay $400 for a big name sub when I can make a better one for less than half the price. After I read the reviews I knew this would be the one for me. I even got it with a $10 discount with a code I found online. I used birch plywood, a JBL 12" 275w RMS sub I found for $29 (regularly priced at $79), and for $174 I have sick lows that pound the floor. It hits so hard that on the test run it had my brother's HK sub moving across the floor on every bass beat. It has options for hookup a nice beefy heatsink and solid design. The worst thing I can say about this amp is if the volume on your receiver is very low the auto on feature may not work properly. I just leave the switch in the "on" position and turn it off if the receiver isn't being used. No need at all for the bass boost feature; this amp is more than ample without it. I would definitely buy one of these again.
Date published: 2014-11-20
Rated 4 out of 5 by from Dayton SPA250 Plate AmpI did quite a bit of research and decided on the Dayton SPA250 for my home-built subwoofer enclosure. After 23 years of using a DBX 150 Mono-Block subwoofer amplifier and one repair bill it didn't owe me a thing. It was time to either have it repaired again or replace it. I've had it connected for a few days and played it twice so far and I'm liking it. I've read about people having issues and replacing certain resistors but for the cost of this unit and the fact that I don't play it that often, I'm hoping it will last for several years. Now that I have a working amp again, it will be most likely be played more often. The bass boost circuit is in an inappropriate location because once mounted in the enclosure that's all you get. If it was top mounted, it could be an easier access. The original cardboard shipping carton was of poor construction and when shipped by you, it was only put in a larger box with hardly no packing material. The Dayton owner's manual isa two page document with no hook up diagram but wasn't an issue due to it being a replacement.
Date published: 2014-11-12
Rated 5 out of 5 by from Fantastic!!!Great sound! Drop in replacement for my Velodyne DLS-3750 subwoofer that went south, screws line right up and were included in the box! Nice quality feel to knobs, controls and jacks also.
Date published: 2014-11-12
Rated 5 out of 5 by from Perfect fitI bought this as a replacement for a little Martin Logan powered sub. It was a direct replacement, hole for hole. Now I have more power and more features at a great price point.
Date published: 2014-11-08
Rated 5 out of 5 by from Excellent drop-in replacement!I had an aging KLH K-SUB10 that recently had the OEM amp die out. Did some quick measurements and this amp fits EXACTLY into the OEM KLH box. Works great! Next upgrade will be the Dayton Mk4 10" woofer to compliment this amp...A+A+A+
Date published: 2014-10-31
Rated 5 out of 5 by from Works w/ Hsu VTF-2 MK2 if you re-drill screw holesThe amp on my Hsu Research VTF-2 MK2 died and I was looking for a replacement. Many people stated in their reviews that this amp is a drop-in replacement. While that is true (the cutout and cables are a direct fit), I found that the screw holes didn't match up.I crudely filled the screw holes with some wood filler, let dry overnight, then re-drilled new screw holes for the new amp. Everything works great with minimal effort.The reason that I filled the old holes with wood filler is that another reviewer stated that he heard a whistling noise from air being forced out of the old holes that went away once he filled them in.
Date published: 2014-10-24
Rated 5 out of 5 by from So far so good for my Onix Rocket ULW 10I purchased this amp about 5 months ago. The amp was a simple drop in and screw installation. Exact fit! It lacks the EQ that was on my original amp and it is rated 50 watts less, but my sub sounds great. Tight, clean, musical and punchy. Just hope the resistors hold up, based on comments of failure.
Date published: 2014-09-05
Rated 5 out of 5 by from Great little amp for the priceGreat amp with great power for a great price. I have no complaints. I use this for 4 shakers and so far it pleases me.
Date published: 2014-09-03
Rated 5 out of 5 by from Very satusfiedPurchased this plate amp to replace a factory Infinty TSS-1200. A little modification and this plate amp sounds better than the original. And quick easy shipping to Canada. Thanks
Date published: 2014-08-26
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Dayton Audio SPA250 250 Watt Subwoofer Plate Amplifier

Bought 2 of these to power 4 AST-2B-4 shakers each. I plan to run them through a Russound sdb-4.1 speaker selector to cut out pairs of shakers not in use. How do I mount this amp in a shelf audio rack and how do I wire all to my Pioneer SC-85 receiver?

Asked by: JPK36
Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2015-02-24

Would this be a better amp than the bash 300 for a 15" ported sub for home theater? They are close to the same price, but I would like quality over 50watts. Are they about the same quality, or is one more dependable? 

Asked by: Bcboyz86
I doubt you will hear any difference between these amplifiers. The additional 50 watts will be hardly beneficial as well. We sell an equal number of these amplifiers and both have the same warranty period, but we can repair Dayton amplifiers should something happen once the warranty is up. We cannot repair Bash amplifiers.
Answered by: MattP
Date published: 2015-02-23

Will this work with an M&K MX-90? The wattage seems more than enough, and the plate size matches. I haven't opened my unit but the sub has 2x 12" drivers in push pull.

Asked by: mikazuki5
As long as the load to the amplifier is no less than 4 ohms and the size matches up it should work well as a replacement.
Answered by: MattP
Date published: 2015-02-11

Which plate amp will fit an Infinity BU-120 subwoofer? 6 1/16"H x 7 1/2"W

Asked by: MMIIKKEE
Unfortunately we do not have anything that will be a drop in fit for that subwoofer. The closest would probably be the Bash 300 which requires a cutout of 10" x 6-1/4".
Answered by: MattP
Date published: 2015-02-11

Will this amplifier work with a Bic PL-200? and is it enough power for it? ( 250 watts rms) (1000 watt peak)

Asked by: Evan08
This should work perfectly fine as a replacement for that subwoofer. You will probably have to modify the enclosure to get it to fit properly.
Answered by: MattP
Date published: 2015-01-29

SPA250 250 Watt Subwoofer Plate Amplifier. I have an ADS C10PS, the amp has been fixed once recently, $230 Grrrrrr. I am wondering if this amp would be a good replacement. It appears the amp is 5 inches deep. I need some direction here.

Asked by: Philip3061
The depth of this amp includes the heat sinks, so the actual mounting depth is about 3-1/2". This requires an opening of 8-1/2" square, so if the cabinet has this size opening or you don't mind modifying it, and the woofer is 4 ohm, this amp should work fine.
Answered by: MattP
Date published: 2015-01-27

Can this SPA 250W plate amp be wired up externally to replace the failed amp in a JBL PB-12 sub?

Asked by: Patrick P
Absolutely. You might have to extend the wires, but you can feed them through the port or drill a small hole and seal it up with silicon or caulk.
Answered by: MattP
Date published: 2015-05-18

what size fuse is reccomended

Asked by: dwjeepilot
The replacement fuse specification is listed on the back of the amplifier as a "T5AL" fuse if you are using 115V input. This means a 5-amp fuse with 250V rating, slow-blow type. For 230V input, the fuse current requirement decreases to 2.5 amps. This will allow the amplifier to draw up to 575 watts in a fault condition, though the nominal power draw is 400 watts when operating at full power. (Power draw will be much less when the amp is at idle.)
Answered by: DaytonAudio_Rory
Date published: 2015-01-23

This amp is rated at 250 watts @ 4 ohms.  Does that mean I can buy a 250 watt 4ohm speaker and not blow it

Asked by: Mannie Queen
A 250 watt woofer will be a good match for this amp, but there is no such thing as a bullet proof system. You can blow a 1,000 watt woofer with 10 watts. As long as you do not clip the amp or allow the woofer to have over excursion you shouldn't have any problems.
Answered by: MattP
Date published: 2015-02-09

My amp is 4 yrs old & connected to a "sound table," powering speakers attached to massage table. Light, infrequent usage (<100 hours, easily); original fuse blew; replacement fuses (5A 250V glass slow blow fuse) also blew. No power light. Suggestions?

Asked by: Like2hike
Usually when an amplifier blows fuses like this the amp is bad. They only have a 1 year warranty, but we would be happy to evaluate the amp and if possible, repair it at only the cost of shipping. Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2015-01-06

for home video use which 12 inch subwoofer will work best in a 5 cubic foot enclosure with the Dayton SPA250 plate amp?

Asked by: aJames
Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2015-01-05

Can I use this to replace the amp on the Dayton powered subwoofer part # 300-634?

Asked by: Marek1235
This will work but it will require modifications to the enclosure in order to fit properly.
Answered by: MattP
Date published: 2015-01-05

I have the PSA-250.  It has stated making rumbling and popping noises even with nothing plugged into it.  Is there a noise filter in this? If so can it be fixed or replaced?

Asked by: 46Tron
Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2014-12-31

Am I understanding the write-up that this plate's high level out to speakers can drive a pair of satellite speakers utilizing a high-pass passive crossover built onto the plate amp? Need an SA70 replacement to eliminate clipping a 15" sub.

Asked by: markn62
The speaker level outputs will not power a separate pair of speakers, they only work as a pass-through when the speaker level inputs are being used. They do have a high pass filter in line however, that will filter 8 ohms speakers at roughly 150 Hz at 6dB per octave.
Answered by: MattP
Date published: 2014-12-31

Do I have to use the "plastic box that comes with this amp, or can I use the exisiting one that is still part of the KLH S200ETH? I am having trouble finding another amp that will fit the opening and plasticbox that already exists?

Asked by: jackce57
Removing the case on the back side of the amp is not recommended since this seals the plate from air leaks. as long as the amplifier is sealed to the cabinet you can use either case, just be careful removing the one that is on the amp.
Answered by: MattP
Date published: 2014-12-17

I finally put together my Dayton SA100 amp with my Clarksynthesis TST209 transducer in my couch. My issue is when I turn my music up (not as loud as I usually listen to it) the transducer will work for a few minutes then cut out or turn off. HELP

Asked by: Radiojunkee
Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2014-12-11

MattP, Thanks for your answer. Would it be preferable to go with this plate amp or should i consider the Dayton Audio SA230? Please forgive the simple questions, i am very new to all of this. RC Driver

Asked by: RC Driver
Either amp will give you very similar performance so the choice is up to aesthetics. The SA230 would probably fit in better if it was included with the rest of your equipment, although it is up to you as to whether that will justify the price difference.
Answered by: MattP
Date published: 2014-12-05

Is it possible to mount a plate amplifier near my other components and run the speaker wire to my in-wall subwoofer? The run is 35 feet thru walls and ceiling. Thanks.

Asked by: RC Driver
Yes, this is a very common thing to do. As long as you provide some breathing room for the heat sink, you can mount this amplifier basically anywhere (indoors).
Answered by: MattP
Date published: 2014-12-05

I have a Sony SA-WX700 that has two 10" 6ohm woofers. Will this amp work for this application? I'm guessing it's not recommended to wire in parallel as that would put my ohms at 3 but wiring in series would result it 12ohms correct?

Asked by: Neilybob88
Yes this amp will work, but you are correct. I would only recommend wiring the woofer to 12 ohms to provide a safe load on the amplifier.
Answered by: MattP
Date published: 2014-12-05

I have a Velodyne DSP 3750 that is starting to pop when listening at heavy low notes usually a DTS soundtrack from a movie. It shuts off and I have to turn the amp off and then back on. I think its the amp. Will this amp fit my sub? thanks.

Asked by: meubanks
Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2014-11-18

Does this amplifier have the capabilities to adjust the EQ filter Q/frequency by changing resistor values similar to how the older #300-794 250w plate amp had? If so, is there a chart available or would it use the same values as the previous model?

Asked by: Brett521
No, we do not publish a chart of resistor substitution values for this amplifier, and we do not advise modifying the component values of the board - doing so will void your warranty.
Answered by: DaytonAudio_Rory
Date published: 2014-11-20

I would just like to verify that this is a class A/B amplifier.

Asked by: Geoeccentric
Yes this is class A/B.
Answered by: MattP
Date published: 2014-11-11

Hello. I'm mounting the SPA250 plate amp into a non-powered cabinet that allready has a low-pass filter inside. Should I remove the filter or leave it wired to the woofer when installing the amp ? 

Asked by: f250phil
I would recommend taking out the passive filter and using the filter that is built into the amp.
Answered by: MattP
Date published: 2014-10-31

Would this amp be a good replacement for a Energy ESW10, amp died!

Asked by: Silverrain1732
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: 2014-10-30

I currently own two ULW10 Subs that have already been replaced with the new Amps from Mark back in 2009, but will 250 watts be enough power for this sub and is there anything else coming down the pipe line that will have more power worth waiting for?

Asked by: GRH5
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: 2014-09-23

If you want to use just a LFE line in rather that a y cable would it go in the mono left in jack? Also would this be sufficient to power a SVS 20-39CS+ passive sub rated at 300 watts at 4 ohms.

Asked by: Dony45
Yes using the left jack is all you need to use if you only have a single subwoofer output. This will work well with that subwoofer.
Answered by: MattP
Date published: 2014-08-25

Very impressed with the product so far for $155. Could you Recommend an 8" speaker sold by Parts Express that would perform best with this amplifier ?

Asked by: ToneDeaf_Noob
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: 2014-08-01

Two amplifiers to one DVC 4 ohm subwoofer. Could I drive a single subwoofer with two of these amplifiers each powering one voice coil which are 4ohm a piece.

Asked by: Tyty12345
Yes you can use two of these amplifiers one a single DVC subwoofer.
Answered by: MattP
Date published: 2014-08-01

I have a PSB Century Subsonic 2i that appears is no longer working. Would this amp be a proper replacement? I've already measured the opening and will have to make it wider to accommodate, but everything should be okay yes?

Asked by: The Big O
As long as the woofer is 4 ohms this amp will work well as a replacement. I would recommend keeping the bass boost off.
Answered by: MattP
Date published: 2014-07-29

What is the lowest impedance this was made to handle?

Asked by: SPLRaptor
This is designed for loads no lower than 4 ohms.
Answered by: MattP
Date published: 2014-07-21
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