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Old 18th November 2010, 02:15 PM   #1
tinitus is offline tinitus  Europe
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Default High voltage SS output, any experiences ?

hey, anyone built a hybrid with high voltage SS output

or are there any experiences with any kind of high voltage SS output

would it make sense to use a flea power amp as driver
maybe either OTL output, or maybe even a 2A3

http://www.st.com/internet/com/TECHN...CD00000774.pdf

http://www.st.com/internet/com/TECHN...CD00070417.pdf
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Old 18th November 2010, 03:24 PM   #2
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While their not hybrids, I've built amps that are high voltage SS. The amps are solid state renditions of the 47 P-P and Tabor class A balanced amplifiers with local feedback on the output stage.

On my webpage-

Tube versions - 47 P-P, Tabor, Tabor Rev. 3

Solid State versions - SS Tabor
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Old 18th November 2010, 03:55 PM   #3
Bigun is offline Bigun  Canada
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High voltage and high current (if not using an OT) means super high power dissipation...
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Old 18th November 2010, 04:50 PM   #4
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Here's another example of a SS high voltage output circuit with an OPT and local outstage feedback.

Most linear triode-strapped pentode

I started with a hybrid of MOSFET input and a 6L6 output tube, then for grins substituted a HV IGBT in place of the tube. I think it may sound a little better with the SS device but it's a difficult call.

For a hybrid, the depletion mode MOSFET at the input could be replaced with a pentode., which will certainly have the possibility of changing the low order harmonic content.

Cheers,

Michael
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Old 18th November 2010, 09:09 PM   #5
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I just bolted on a high power solid state MOSFET amp onto the output of my SRPP front end.
Sounds very good.
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Old 18th November 2010, 10:47 PM   #6
fiacono is offline fiacono  Australia
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Default SS Tabor

Hi Gary
Very impressed with your SS Tabor amplifier.
I have built a few transformer coupled amplifiers Amity, Karna, KK and variants (all DHT outputs).
I have noticed the input tube has a big impact on the overall sonic of the amplifier and I just havenít found an input tube I like.
What are your thoughts if I used SS input TT coupled to 45 drivers and 300B outputs? This would do away with a tube input.
regards
Frank
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