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Dayton Audio SPA250 250 Watt Subwoofer Plate Amplifier

Brand:| Model: SPA250
Product Video
Overview
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.
A restocked/refurbished, or Open Box unit of the product is available -- see it now
Highlights
  • 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 # 
300-803
Weight: 13.4 lbs.  
IN STOCK
List Price$199.99
You Save37%
Your Price
$124.80
Part # 300-803
Qty:  EA
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Product Details

Dayton Audio SPA250 250 Watt Subwoofer Plate Amplifier

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.

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.

• 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
    (115 Reviews)
  • Weight13.4 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

View similar products to the Dayton Audio SPA250 250 Watt Subwoofer Plate Amplifier
in the Subwoofer Plate Amplifiers product category.

Reviews

Dayton Audio SPA250 250 Watt Subwoofer Plate Amplifier
Dayton Audio SPA250 250 Watt Subwoofer Plate Amplifier is rated 4.5391 out of 5 by 115.
Rated 2 out of 5 by from Good value, but has design + build quality issues.These units have some design/build issues which is why a lot of them after 12 months or so. There are 4 resistors which are subject to heat stress and eventually fail, causing random pops and bangs that are heard through the speaker. This can be fixed/avoided by replacing the resistors with higher power and higher quality versions. If it is left too long the circuit boards can become heat damaged and too far gone to repair.The other concern is that QA on these units seems to be low. Upon receiving my unit something was rattling around inside. Living in Australia, sending the unit back was cost prohibitive and I was going to replace the resistors with better ones anyway so i opened it up. A metal washer fell out onto the bench. Upon further investigation, someone on the production line had crossthreaded a bolt holding one of the output transistors to the heatsink as a result the head of the bolt was sheared clean off and the transistor was making very poor contact with the heatsink.Nevertheless, the value of this unit is extremely good if you are capable of rectifying the problems above (and voiding the warranty!) the unit works great!
Date published: 2014-07-27
Rated 5 out of 5 by from A lot of bang for the buck.I am using this with an old Acoustec H100 sub and the difference is incredible. A lot more power, tighter, and more accurate sound. The amp was a little large for the stock enclosure, so I built an external enclosure for the amp that is connected to the original enclosure.
Date published: 2014-07-16
Rated 5 out of 5 by from small but powerful easy to fitNice little amp comes with great sealing gaskit and hardware I used this amp to replace my blown klipsh 12 in. It pushes the12 woofer no problem kicks the 12in passive on the back to lots of adjustments to tune it to your liking in my opinion its got a great warranty and even even better support so thumb up
Date published: 2014-07-03
Rated 5 out of 5 by from Direct replacement for my Sub!After HSU told me "sorry, we can't fix your sub amp, but we'll sell you a new sub," I purchased this amp after finding out about it on a forum. It was a exact drop-in, even the old screw holes matched up, for my dead HSU VTF-2 amp. Awesome!
Date published: 2014-06-20
Rated 3 out of 5 by from First unit failed within 1 yearThe amp worked well during my first 11 months or so. Had no complaints until it failed. PE did warranty it for me. I am worried that the same thing will happen to the new unit. Unfortunately, I moved and it hasn't been used for 8 months. If it fails this time it won't be under warranty. Will try and update this as I am about to move again and will be using regularly.
Date published: 2014-06-17
Rated 5 out of 5 by from Plenty of powerThis amplifier is being used to drive 3 Aura AST-2B-4 Pro Bass Shaker Tactile Transducers, wired in series resulting in an effective 12 ohm load. At this load impedance, the amp should supply approximately 35 watts RMS maximum power to each shaker. That's way more than enough power to get my 3-seat home theatre sofa really "moving."
Date published: 2014-06-13

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 SPA250 250 Watt Subwoofer Plate Amplifier

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

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: oflores
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

I am rebuilding a Truaudio CS-10 subwoofer. The plate amp is cutting out with a burnt mark on the board.  The speaker is a 10", 8ohm and at least 150W looks to work fine. Will a  Dayton Audio SPA250 plate amp work? Btw it is a 12x12x12 ported cabinet. 

Asked by: Templear
This amplifier will work fine with a 150 watt 8 ohm load.
Answered by: MattP
Date published: 2014-07-17

CAN YOU DISABLE THE LOW PASS FILTER AND BASS BOOST. 150 IS TOO LOW AND DO NOT NEED THE BOOST

Asked by: MCCLAIN659
Unfortunately the low pass filter cannot be bypassed but the bass boost can be disabled with the switch on the amplifier.
Answered by: MattP
Date published: 2014-07-10

Would the Dayton SPA250 be the correct replacement for my Cerwin Vega 12s? It's the powered subwoofer that came with the CVHD 5.1 and CVHD 2.1.   If not which one would it be?  Thank You for your time on this matter.

Asked by: TJ1SM
This amplifier will work well as a replacement for that amplifier, however there is no guarantee it will fit without cabinet modifications.
Answered by: MattP
Date published: 2014-06-30

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