SRPP (something like in the world of vacuum tubes) in solid state audio aplications

Bojan Hajdinjak · 1st June 2004, 06:03 PM

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?

destroyer X · 1st June 2004, 07:53 PM

I will tell you some latter.

Thank you by the link.

Happy to see your country here.

Carlos

destroyer X · 1st June 2004, 07:56 PM

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

Do you have this quality people in your country?

Very pretty.

Carlos

Bojan Hajdinjak · 1st June 2004, 08:20 PM

It's a (very) small country (1,5 milion people). But we have some pretty girls

Bricolo · 1st June 2004, 09:26 PM

Welcome in the European Union

Bojan Hajdinjak · 1st June 2004, 09:42 PM

Thank You very much

I'm glad to see so much interesting people here, on this site

Dozuki · 1st June 2004, 11:24 PM

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.

Jonathan Bright · 3rd June 2004, 07:12 AM

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.

Bojan Hajdinjak · 3rd June 2004, 07:39 AM

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.

Bojan Hajdinjak · 3rd June 2004, 10:43 AM

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

1st June 2004, 06:03 PM	#1
Bojan Hajdinjak diyAudio Member Join Date: Jun 2004 Location: Ljubljana - M. Sobota, Slovenia	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? __________________ www.hiendfi.com www.hajdinjaklabs.com

1st June 2004, 07:53 PM	#2
destroyer X diyAudio Member Join Date: Feb 2004 Location: Recife - Brasil Northeast	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 __________________ Try to build an amplifier folks ... it is pure adrenaline!

1st June 2004, 08:20 PM	#4
Bojan Hajdinjak diyAudio Member Join Date: Jun 2004 Location: Ljubljana - M. Sobota, Slovenia	SI It's a (very) small country (1,5 milion people). But we have some pretty girls __________________ www.hiendfi.com www.hajdinjaklabs.com

1st June 2004, 09:42 PM	#6
Bojan Hajdinjak diyAudio Member Join Date: Jun 2004 Location: Ljubljana - M. Sobota, Slovenia	interesting people Thank You very much I'm glad to see so much interesting people here, on this site __________________ www.hiendfi.com www.hajdinjaklabs.com

3rd June 2004, 07:12 AM	#8
Jonathan Bright diyAudio Member Join Date: Feb 2004 Location: Queensland	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. __________________ "It was the Spring time of the year when aunt calls to aunt like mastodons across the frozen waste." P.G. Wodehouse.


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1st June 2004, 09:26 PM	#5
Bricolo diyAudio Member Join Date: Nov 2002 Location: Grenoble, FR	Welcome in the European Union

1st June 2004, 11:24 PM	#7
Dozuki diyAudio Member Join Date: Jul 2002 Location: Naptown	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.

3rd June 2004, 07:39 AM	#9
Bojan Hajdinjak diyAudio Member Join Date: Jun 2004 Location: Ljubljana - M. Sobota, Slovenia	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. __________________ www.hiendfi.com www.hajdinjaklabs.com

3rd June 2004, 10:43 AM	#10
Bojan Hajdinjak diyAudio Member Join Date: Jun 2004 Location: Ljubljana - M. Sobota, Slovenia	SRPP I'll send you by the mail ( its from the internet....) __________________ www.hiendfi.com www.hajdinjaklabs.com

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