Hi
I want to show you a circuit, I found last week in the Studer archive:
The Studer 52
Isn't this a very nice circuit?
Carefully selected tubes, DC coupled phase inverter, cathode feedback output transformer.
Not one part to much, fine engineering work.
A little Swiss Quad II?
I don't know, how many of them where produced. I have never seen one of them.
But it could be a very nice project to rebuild, isn't it?
Kind regards
Franz
I want to show you a circuit, I found last week in the Studer archive:
The Studer 52
An externally hosted image should be here but it was not working when we last tested it.
Isn't this a very nice circuit?
Carefully selected tubes, DC coupled phase inverter, cathode feedback output transformer.
Not one part to much, fine engineering work.
A little Swiss Quad II?
I don't know, how many of them where produced. I have never seen one of them.
But it could be a very nice project to rebuild, isn't it?
Kind regards
Franz
Hi
I can share more info with you: the production datasheet from the output transformer (sorry, written in German):
BTW:
I plan to rebuild this promising circuit. I ordered output transformers specially for this project from www.roehrentechnik.de, from Gerd Reinhoefer. He will produce them following the datasheet, but using a double chamber in M102 format and todays iron quality. It will be a very well sized tranny for this amp. The price will be the same like the production trannies, he is offering!
Should you want the original circuit and the tranny datasheet in PDF, just drop me a mail under firstname dot name at studer dot ch
Kind regards
Franz
I can share more info with you: the production datasheet from the output transformer (sorry, written in German):
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
BTW:
I plan to rebuild this promising circuit. I ordered output transformers specially for this project from www.roehrentechnik.de, from Gerd Reinhoefer. He will produce them following the datasheet, but using a double chamber in M102 format and todays iron quality. It will be a very well sized tranny for this amp. The price will be the same like the production trannies, he is offering!
Should you want the original circuit and the tranny datasheet in PDF, just drop me a mail under firstname dot name at studer dot ch
Kind regards
Franz
The schematic is downloadable from here:
ftp://ftp.studer.ch/Public/Products/Miscellaneous/Model_52_PwrAmp/Manuals/Model_52_Diagr.pdf
Franz
ftp://ftp.studer.ch/Public/Products/Miscellaneous/Model_52_PwrAmp/Manuals/Model_52_Diagr.pdf
Franz
An EL84 design from Studer, what could be nicer?
Answer
An EL34 design from them !
ftp://ftp.studer.ch/Public/Products/Miscellaneous/Model_22_PwrAmp/Manuals/Model_22_Diagr.pdf
Answer
An EL34 design from them !
ftp://ftp.studer.ch/Public/Products/Miscellaneous/Model_22_PwrAmp/Manuals/Model_22_Diagr.pdf
Yes! And it was me (proud) having discovered both circuits in the Studer archive while I was a Studer employee.
For the EL34 version I could not find the datasheet of the output transformer but a Lundahl LL1620CFB should do the job.
For the EL84 version there is a fine offering available here Gegentakt
Look for the 53.1S52 type (do you recognize the S52 in the product number?)
Happy ears!
Franz
For the EL34 version I could not find the datasheet of the output transformer but a Lundahl LL1620CFB should do the job.
For the EL84 version there is a fine offering available here Gegentakt
Look for the 53.1S52 type (do you recognize the S52 in the product number?)
Happy ears!
Franz
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