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seek a threashold power amplifier

in the 80s,threshold sold a mono block power amps.one class a and one class a/b.i seek the class a/b to buy.maybe not available because none sold.do not remember tag or model name.it was listed as 1 horsepower at 8 ohms.look up watts horsepower conversion table.the class a and class a/b were indentical cabinets.huge.the current mcintosh labs power amps mc2kw are 2000 watts at 2 4 8 ohms.about 3 horsepower and cost a fortune.threshold less by a mile if burn time a year or two classical music.HELP?anyone out there knows anything about this power amplifier.i am trying to buy the pair.
goingnuts
pbnaudio's avatar
pbnaudio
1,613 posts
 
I think you are looking for a Threshold SA-12E

They pop up here sometimes and on Ebay too

Good luck

Peter
jpainter236's avatar
jpainter236
115 posts
 
Stasis 1 monoblocks?
Ag insider logo xs@2x
edwyun
244 posts
 
Threshold didn't make a 1 horsepower Class AB amplifier in the 80s. They did make one in the late 80s/early 90s. It was called the S/1600e. It used the same chassis as the top of the line Class A SA/12e but was biased to operate in AB.

From my book...
Rated output: 1 horsepower @ 8ohms @ <0.15% distortion
Bandwidth: flat @ DC to -3dB @ 100KHz
Slews rate: 100 volts/uS
Output current capability: 35 continuous/200 peak amperes
Power: Two 1.2KWatt transformers & 216,000uF capacitance
Input Impedance: 50K ohms RCA/600 ohms XLR
Output Impedance: 0.1 ohm
Gain: +32.6dB
Weight: 130 lbs each

Personally, I prefer the higher biased class A designs at lower wattages. YMMV.
unsound
7,329 posts
 
You might have more luck finding a pair of SA 12e's and sending them to some one like Jon Soderberg of vintage amp repair to have them re-biased to the S 1600e's specs. The SA 12e's pop up from time to time, but the S 1600e's not so much.
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