John Curl's Blowtorch preamplifier part II - Page 319

john curl · 23rd December 2009, 02:46 PM

GK you are apparently a technician and have no idea the reason for this design approach. You don't have to agree with it. Just live with and love the circuits you respect.

syn08 · 23rd December 2009, 02:55 PM

Quote:

Originally Posted by GK

It does?

C'mon, has global NFB, servos, trimming, etc... you must love it

Really, for the early 80's it's not that bad. Can you show one of those more sophisticated designs of the time?

GK · 23rd December 2009, 03:13 PM

Quote:

Originally Posted by syn08

Can you show one of those more sophisticated designs of the time?

Nope, they're just a figment of my imagination. Nobody knew how to design audio with discrete components before JC, period - He is THE genius, as he modestly points out himself.

simon7000 · 23rd December 2009, 03:33 PM

Quote:

Originally Posted by GK

It does?

I've worked on old Sansui, Marantz and Sony (and other) pre/control amplifiers older than that that were lightyears ahead in terms of sophistication.

Elegance or Sophistication?

I vote that this is an elegant circuit. Yes there are some things that can be improved. But when you build and live with a design hopefully you learn something.

Thanks for showing a circuit.

scott wurcer · 23rd December 2009, 06:39 PM

Well I listened to this with John Dennesen (still use his alignment protractor) and it sounded very good. He was using a Linn with his air-bearing arm and I forgot the cartridge/speakers. It was my first "high-end" session.

scott wurcer · 23rd December 2009, 11:44 PM

Nothing kills a thread faster than a real circuit. And Federmanns thread gets 5 stars!

john curl · 23rd December 2009, 11:54 PM

Actually, wading through the criticism of a 'real circuit' even decades after it was produced by the 100's, and won world acclaim, is what kills my enthusiasm for helping those who know no better.

scott wurcer · 12:20 AM

Well I heard Smokey Joe's is gone. It figures these days. That was my kind of place, electric frying pans and Leonard Cohen. You can always **** money away at Chez Pannise but there is something missing.

john curl · 24th December 2009, 12:22 AM

Dick Sequerra says hello, told everything about his spark plugs.

stinius · 24th December 2009, 12:30 AM

[QUOTE=scott wurcer;2022970]Nothing kills a thread faster than a real circuit. QUOTE]]

Sad but true.

23rd December 2009, 06:39 PM	#3185
scott wurcer diyAudio Member Join Date: Jan 2004 Location: cambridge ma	Well I listened to this with John Dennesen (still use his alignment protractor) and it sounded very good. He was using a Linn with his air-bearing arm and I forgot the cartridge/speakers. It was my first "high-end" session. __________________ 2012, our time is running out.

23rd December 2009, 11:44 PM	#3186
scott wurcer diyAudio Member Join Date: Jan 2004 Location: cambridge ma	Nothing kills a thread faster than a real circuit. And Federmanns thread gets 5 stars! __________________ 2012, our time is running out.

24th December 2009, 12:18 AM	#3188
scott wurcer diyAudio Member Join Date: Jan 2004 Location: cambridge ma	Well I heard Smokey Joe's is gone. It figures these days. That was my kind of place, electric frying pans and Leonard Cohen. You can always **** money away at Chez Pannise but there is something missing. __________________ 2012, our time is running out. Last edited by scott wurcer; 24th December 2009 at 12:20 AM.

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23rd December 2009, 02:46 PM	#3181
john curl diyAudio Member Join Date: Jul 2003 Location: berkeley ca	GK you are apparently a technician and have no idea the reason for this design approach. You don't have to agree with it. Just live with and love the circuits you respect.

23rd December 2009, 11:54 PM	#3187
john curl diyAudio Member Join Date: Jul 2003 Location: berkeley ca	Actually, wading through the criticism of a 'real circuit' even decades after it was produced by the 100's, and won world acclaim, is what kills my enthusiasm for helping those who know no better.

24th December 2009, 12:22 AM	#3189
john curl diyAudio Member Join Date: Jul 2003 Location: berkeley ca	Dick Sequerra says hello, told everything about his spark plugs.

24th December 2009, 12:30 AM	#3190
stinius diyAudio Member Join Date: Oct 2008	[QUOTE=scott wurcer;2022970]Nothing kills a thread faster than a real circuit. QUOTE]] Sad but true.

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