NHT SA-2 vs. plate amp

pjanda1 · 16th August 2005, 07:57 PM

I've got the opportunity to buy an NHT SA-2 and I'd like opinions from anyone that has used or heard one. It will eventually be mated to sub accompanying my not yet completed full rangers. I don't think power will be an issue. I like the 35-150 hz low pass range, the 100 hz speaker level high pass, the adjustable line level high pass, and it's stand alone nature. On the downside it's $120 price puts it in the midst of some passable looking plate amps, and it is used. Any thoughts?

thanks,

Paul

specs at:

http://www.nhthifi.com/products/sa-2.html

cyclotronguy · 18th August 2005, 09:13 PM

The NHT SA-1. SA-2, SA-3 were plate amps repackaged. Build quality was on a par with the better plate amps.... ie nothing special quality wise. Circuit was, as a rule reliable, albeit perhaps complicated.

They would usually run into 2 ohms or less with no problem thanks to an opto-coupled current limit device. Ran pretty efficient, once ran an SA-3 into 1 ohm non inductive load until it clipped with 60 Hz input signal.

The SA-3 under these conditions drew about 10 watts more from the wall than it actually produced.

Cyclotronguy

pjanda1 · 19th August 2005, 04:19 PM

Thanks! I think I'm going to go with a new plate amp. I haven't seen much written about these, but the ebay prices made me pause and wonder.

Paul

16th August 2005, 07:57 PM	#1
pjanda1 diyAudio Member Join Date: Jan 2005 Location: Boulder, CO	NHT SA-2 vs. plate amp I've got the opportunity to buy an NHT SA-2 and I'd like opinions from anyone that has used or heard one. It will eventually be mated to sub accompanying my not yet completed full rangers. I don't think power will be an issue. I like the 35-150 hz low pass range, the 100 hz speaker level high pass, the adjustable line level high pass, and it's stand alone nature. On the downside it's $120 price puts it in the midst of some passable looking plate amps, and it is used. Any thoughts? thanks, Paul specs at: http://www.nhthifi.com/products/sa-2.html

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18th August 2005, 09:13 PM	#2
cyclotronguy diyAudio Member Join Date: Sep 2001 Location: Northern California	The NHT SA-1. SA-2, SA-3 were plate amps repackaged. Build quality was on a par with the better plate amps.... ie nothing special quality wise. Circuit was, as a rule reliable, albeit perhaps complicated. They would usually run into 2 ohms or less with no problem thanks to an opto-coupled current limit device. Ran pretty efficient, once ran an SA-3 into 1 ohm non inductive load until it clipped with 60 Hz input signal. The SA-3 under these conditions drew about 10 watts more from the wall than it actually produced. Cyclotronguy

19th August 2005, 04:19 PM	#3
pjanda1 diyAudio Member Join Date: Jan 2005 Location: Boulder, CO	Thanks! I think I'm going to go with a new plate amp. I haven't seen much written about these, but the ebay prices made me pause and wonder. Paul