SRPP (something like in the world of vacuum tubes) in solid state audio aplications - diyAudio
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Old 1st June 2004, 06:03 PM   #1
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Default SRPP (something like in the world of vacuum tubes) in solid state audio aplications

Dear members of diyaudio.com

Do you ever think about SRPP in solid state audio (preamp and driver) applications?

Something like on the link http://www.hiendfi.com/modules.php?n...rticle&sid=102 ?

SRPP is often part of some super triod amp. construction

But in solid state World? Have you any experience with?
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Old 1st June 2004, 07:53 PM   #2
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Default I am reading and trying to understand first.

I will tell you some latter.

Thank you by the link.

Happy to see your country here.

Carlos
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Old 1st June 2004, 07:56 PM   #3
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Default I could not advance too much, because all the time

My eyes returned to this picture....My God!

Do you have this quality people in your country?

Very pretty.

Carlos
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Old 1st June 2004, 08:20 PM   #4
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Default SI


It's a (very) small country (1,5 milion people). But we have some pretty girls
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Old 1st June 2004, 09:26 PM   #5
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Old 1st June 2004, 09:42 PM   #6
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Default interesting people

Thank You very much

I'm glad to see so much interesting people here, on this site
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Old 1st June 2004, 11:24 PM   #7
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I have thought about mucking around with SRPP with solid state. I guess it's on my to do list. i also want to muck about with a white catholde follower in solid state as well. D. Self shows an example of this on his site, used for the outputstage of pre amps and the such. Figured it wouldn't take much to convert this to an output stage.

I've seen the Super triode connection, and i think there is a thread here about using it with solid state. I believe the inventor of it has the Evole Ampilifiers site (Japanese). Basicly the STC Amp uses the internal resistance of a valve for the feed back resistor.

There should be no reason why one couldn't use old Valve topologies with SS. Might work well, might be so, so. But, I think that there is a lot of potential in this as Valves are limited to N types so to speak and the designers came up with some very novel ways of dealing with issues because of this. Although I admit I'm no expert at any of this, just an adament hobbist.

-D.
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Old 3rd June 2004, 07:12 AM   #8
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In the last 3-4 months ELEKTOR have published a passive pre-amp built around two SRPP FET gain blocks(BF245/ etc.). It was a solid state version of a valve circuit they did in the mid 1980's. Looked good. No feedback. As you are in Europe you should be able to get a copy. I haven't got a scanner or I'd put more information up.
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Old 3rd June 2004, 07:39 AM   #9
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Default SRPP from elector

Yes, it's true. Those (Electors) SRPPs isn't the same like HLs. I'll give you one copie into this site in the evening tonight. Yu'll see the full schematics.
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Old 3rd June 2004, 10:43 AM   #10
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Default SRPP

I'll send you by the mail ( its from the internet....)
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