Dayton Audio SPA1000 1000W Subwoofer Plate Amplifier

Brand:| Model: SPA1000
Recently updated design! The Dayton Audio SPA1000 subwoofer amplifier provides nearly a kilowatt of clean, reliable audio power—just what you need to get big sound out of large, low-efficiency subwoofer speaker systems.
A restocked/refurbished, or Open Box unit of the product is available -- see it now
  • 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 for custom-tailored sound
  • Advanced soft clip circuitry improves headroom and protects woofers
  • OTC™ (Optimized Thermal Circuit) protects your plate amplifier from potential heat damage
  • Hercules heat sinks dissipate and control heat for extreme reliability
Part # 
Weight: 22.65 lbs.  
List Price$499.99
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Part # 300-809
Qty:  EA
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Product Details

Dayton Audio SPA1000 1000W Subwoofer Plate Amplifier

The Dayton Audio SPA1000 is one of the most technologically advanced subwoofer amplifiers on the market today! The Dayton Audio SPA1000 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 SPA1000 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: 497 watts into 8 ohms, 950 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 • Parametric EQ: Frequency: 18 ~ 80 Hz; Bandwidth: 0.1 ~ 1 Q; Level: -14.5 dB to +6 dB • Phase Adjustment: 0° (NOR) or 180° (REV) • Input impedance: 12K ohms • Input voltage: User switchable 115V/230V (Euro cord available) • Stand-by power rating: 115V 24W; 230V 18.4W • Efficiency: 86% • Net weight: 17 lbs. • Dimensions: 11-15/16" W x 11-15/16" H x 5-1/4" D; Cutout dimensions: 10" W x 10" H.

Dayton Audio SPA1000 1000W Subwoofer Plate Amplifier
  • BrandDayton Audio
  • ModelSPA1000
  • Part Number300-809
  • UPC844632081668
  • Product CategorySubwoofer Plate Amplifiers
  • Unit of MeasureEA
  • Product Rating
    (11 Reviews)
  • Weight22.65 lbs.
  • Case Qty2
  • 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 SPA1000 1000W Subwoofer Plate Amplifier
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Dayton Audio SPA1000 1000W Subwoofer Plate Amplifier
Dayton Audio SPA1000 1000W Subwoofer Plate Amplifier is rated 4.7273 out of 5 by 11.
Rated 4 out of 5 by from Good valueI have a Niles Stage Front 15" subwoofer. The amp failed after three years. Niles discontinued this model and would not repair the failed unit. I contemplated replacing the entire subwoofer but this was cost prohibited at the time. I did not realize I could replace the amp until I found this Plate amp from Dayton Audio. It matched the power of the original amp and fit the original enclosure with some very slight modifications. I like the EQ adjustments on the amp and still need to tweak these a bit to reduce the boom but overall this is a great amp at a great value. Thanks Parts Express
Date published: 2014-02-28
Rated 5 out of 5 by from Great ampI used this amp in a 4cf sealed DIY subwoofer enclosure with the Dayton Audio 18" Reference drive and I could not be any happier. This amp has plenty of power. The parametric EQ makes it easy to blend with my front mains or if I just want to have ridiculous thumping bass.
Date published: 2014-02-07
Rated 5 out of 5 by from Great amp, massive power and no dirty bass.I used this amp for a custom subwoofer build and I am very happy. This amp has tons of (potential) power. It can be tuned to blend and harmonize with your other speakers, or you can really punch it and get the earth shaking bass for movies or music. This is a great amp and I am very happy with this product.* Project note:Yes, these are car audio drivers. I specifically chose them for their power handling and performance;•12" subwoofer with dual 4-ohm voice coils•polypropylene woofer cone with large-roll rubber surround•progressive spider design for excellent cone control•frequency response: 23-400 Hz•power range: 100-300 watts RMS (1,200 watts peak power)•sensitivity: 93 dB•top-mount depth: 6-3/8"•sealed box volume: 1.25 cu. ft.I also selected this driver because its cost is signifigantly lower than comparable theatre style subs with similar specs (plus they look much better than regular flat black paper cones on theatre style subs)I have these wired to 4ohms, and they have great response in the sealed box.*** I would love to post this in the "Gallery" but that page says "Coming Soon" when you try to add your own project.
Date published: 2014-02-07
Rated 5 out of 5 by from Works GreatI did have major hum at first, but once I isolated the ground the hum is one hundred percent gone. Incredible true power!
Date published: 2014-02-13
Rated 5 out of 5 by from SPA-1000This new revised sub amp with heat sinks is now very reliable!!!! trust me ive done a lot of torture to it and it never fail!!!! I drive a dayton rss390-ho and the sound and power are breathtaking! highly recommanded.
Date published: 2014-02-07
Rated 5 out of 5 by from Great Sounding and Powerful with Convenient FeaturesI've had my SPA1000 for a month now and it preforms just as described. It powers an Exodus Audio Shiva X2 Subwoofer and does so with great sound quality. Whether listening to Serenade in D Major or House music, this amp truly delivers the power and sound quality where it is needed. Watching action sequences, I can feel the compression from all the bass, and my sub is currently in a pretty tiny and inadequate vented box. Hopefully this summer I will have time to build a decent box and utilize this sub and amp combo to its fullest potential. The On board EQ also protects my sub from unloading on low frequencies, eliminating the need for any additional hardware to protect the driver. There is just ONE reservation I have (or had) about this amp: The first unit I received seemed to have been dropped or had a factory defect: one point along the lower left hand corner had been mushroomed. At any rate, I contacted parts express and sorted the problem out. There was a week delay because FedEx screwed up, so I don't blame the PE staff. Great customer service and product overall!
Date published: 2014-03-27

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 SPA1000 1000W Subwoofer Plate Amplifier

3 Ohm?

Can this Amp power a JL Audio 12W7 as it has a single 3 Ohm Voice Coil? and I need approx. 1000 watts RMS
Asked by: JL Homesubs
Answered by: Fanden
Date published: 2014-02-13

What is the lowest impedance this Amp is stable at?

Can this amp run driving two 4 ohm drivers in parallel, or do they need to be hooked up series?
Asked by: aceinc
The amp is suitable for 4 ohm nominal load and not stable for a 2 ohm nominal load, so the two 4 ohm drivers would need to be wired in series for an 8 ohm load.--Another option is to use two 8 ohm rivers in parallel for a 4 ohm load.--And another option is to use four 4 ohm drivers, wiring them into a series/parallel combination: Simply wire the 4 ohm drivers into two separate sets of series (8 ohms each) then connect both sets to the amp in parallel (8/2=4ohms) for total resistance of 4 ohms for the set of 4 drivers.
Answered by: platoindy
Date published: 2014-03-26

Can I run two 10 inch woofers one down firing and one facing out in same box with the SPA1000 ?

I want to start build me a good subwoofer first and then speakers. I have a new pieoneer av system and a need a powers sub ! I want build it and move up to speakers I got sum oldies but want to build sum of my own !!
Asked by: Greg907
Yes, Wire two 8 ohm woofers into a 4 ohm configuration. Another good trick is to mount the bottom firing unit facing into the cabinet and wire it out of phase. This is a technique M&K did on their professional subs that balanced the anomolies between drivers in production. Makes a big, or should I say, deep difference. Have fun with your project.
Answered by: MarkAJH
Date published: 2013-09-22

Will these amps hold up to PA applications?

I have two 18" Yamaha subs. I was looking at running one powered with the SPA1000 and run the other off it too. The system would be 4 ohms. They will be run at high levels for 4-6 hours at a time. I am worried about reliablity and spl.
Asked by: webergod
The key to keeping the load manageable for any amplifier is to raise the efficiency of the enclosure, like building it a little larger than the vas speck, and then adding sound dampening. But with this amplifier, it's rugged AB architecture, is likely as stable in heavy use as a crown amp. The only way to aid it at being even more stable would be to mount a small case fan nearby to blow cool air across the fins, but I wouldn't go through the trouble to do this until you experience any heat trouble, especially seeing as you live in the nice temperate climate of Portland. I hope that this is to your liking. Best of luck with your project!
Answered by: BigRichard
Date published: 2014-02-08

What is the LPF slope on this amp and the SA version? Is it really 24 db/ocave on both?

I'm getting conflicting information from PE on this. Can someone please confirm this?? Mark said it is 24 db based on the literature from the designer of the amp; however, Eric (the repair tech, who works on these all the time) indicated it is 12 db. I know the HPF in the SA rack-mount version is 12 db/octave and that the SPA plate amp here does not have a HPF. Is someone maybe getting the two confused...or is the spec data wrong? I wish Dayton would print this spec on their spec sheet at their website but they don't. If it is not 24 db, we will be forced to buy an active Linkwitz Riley 4th-order crossover.Thanks for any help guys!
Asked by: Rick Dee
As far as I know, the SPA plate amps have a 24dB slope filter to them. As for the SA series, these DO have a 12dB slope, yet that is not quite all that is happening. At 180-200hz, an addition fixed slope is cutting in....only 12dB of the slope is adjustable. It does not appear that the SPA amps follow this trend, mine seems to have the full 24dB slope adjustable. I own an SPA-500, and an SA-240.
Answered by: SpkrNuts
Date published: 2011-12-17

If 5-1/4" is the full depth including plate and knobs, how deep is just the back part that goes into the enclosure?

Asked by: burrito
For the HPSA-1000 the plastic cover is 5" deep from the gasket, plus about 1/2" in the center for the wires coming out the grommet. The pictures of this newer version look the same on the inside.
Answered by: lotus
Date published: 2012-02-20

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