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Dayton Audio SPA1000 1000W Subwoofer Plate Amplifier
Can this Amp power a JL Audio 12W7 as it has a single 3 Ohm Voice Coil? and I need approx. 1000 watts RMS
GO FOR IT!
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?
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.
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 !!
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.
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.
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!
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!
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.
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?
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.
Date published: 2012-02-20