John Curl's Blowtorch preamplifier

[CG]

They already took the place.

You have a different FCC out in California?

http://www.fcc.gov/cgb/consumerfacts/digitaltv.html

 

[john curl]

A design can be a topic of intellectual interest. Just like most IC designers would find the BLOWTORCH circuitry impossible to make into an IC, still might be interesting to simulate it, as PMA did, or discuss it, generally. What's the problem with this?

 

[Wavebourn]

You have a different FCC out in California?

http://www.fcc.gov/cgb/consumerfacts/digitaltv.html

FCC is the same, and all frequencies up to TV bands are already polluted by luminescent lamps, dimmers, SMPS, BPL.


http://www.arrl.org/tis/info/HTML/plc/aud-vid.html

 

[syn08]

Just like most IC designers would find the BLOWTORCH circuitry impossible to make into an IC,

Not impossible, but more like not worth of.

 

[PMA]

This is a Blowtorch thread, no global FB complementary-differential preamp. I would like to mention that I have just designed and built another non global feedback, complementary-differential preamp. Based on BJTs again, with different output stage - I gave up a diamond buffer and used another push-pull output class A stage, with much higher bias current. Right now it is under listening tests, and seems to be promising. I am moving step-by-step to John Curl and Charles Hansen design philosophy.
This preamp would not be a DIY project.

 

[stinius]

I gave up a diamond buffer and used another push-pull output class A stage

Alison?

 

[syn08]

I am moving step-by-step to John Curl and Charles Hansen design philosophy. This preamp would not be a DIY project.

I'm sure that's a good for business move

What was your last DIY project?

 

[john curl]

I learned more from PMA's last preamp project, than your phono stage. Virtually everything that you did, I did 15-25 years before, in principle. I don't wish this to be anything but a critical appraisal, since you, Syn08 keep implying, otherwise.

 

[PMA]

I learned from you, John.

 

[syn08]

I learned more from PMA's last preamp project, than your phono stage. Virtually everything that you did, I did 15-25 years before, in principle. I don't wish this to be anything but a critical appraisal, since you, Syn08 keep implying, otherwise.

I'm not here to educate you John, at least not for free. Send me an email and I'll reply back with my hourly rate. That would be your best spent money in the last 40 years.

EDIT: I can understand your need to be critic; your Vendetta SCP phono stage now shares the fate of the Cretacic reptilians, facing the pitchfork weilding mammals competition.

 

[john curl]

You do seem to contribute in free criticism of others on this thread, why? It looks like self-promotion to me.
Syn08 you are in a unique position to contribute to this website. You are better educated than most, and have some competence in circuit design. Why denigrate the rest of us, especially with 'cheap shots'? We are all trying to contribute here.

 

[syn08]

You do seem to contribute in free criticism of others on this thread, why? It looks like self-promotion to me.
Syn08 you are in a unique position to contribute to this website. You are better educated than most, and have some competence in circuit design. Why denigrate the rest of us, especially with 'cheap shots'? We are all trying to contribute here.

I don't denigrate anybody, and I don't see how I could touch your reputation as a legendary designer, in particular because I recognize it myself.

However, your inability to credit anybody but those kissing your *** (while OTOH expecting al the credit in the world, even when you are blatantly wrong) is certainly annoying and I feel an urge to call you on it from time to time. It's not about me, it's mostly about all the former and present contributors on this forum (and not only).

 

[Wavebourn]

I once saw a woman John who knew The Bible from A to Z. She was very judgmental, and her philosophy was, "There may be only 2 opinions: either my opinion, or a wrong opinion".

 

[Edmond Stuart]

arrogant SH

I'm not here to educate you John, at least not for free. Send me an email and I'll reply back with my hourly rate. That would be your best spent money in the last 40 years.
...........

Even / hour would be a waste of money.

 

[scott wurcer]

I once saw a woman John who knew The Bible from A to Z.

They usually travel in matched pairs.

 

[Wavebourn]

They usually travel in matched pairs.

Sometimes they have children who believe that parents are always wrong as well. They believe that though parents might see The Light, but they did not see the Modern Light.

 

[john curl]

I hired my first PhD as a consultant in 1974, what do you have to offer? This engineer designed a phase compensated anti-aliasing filter for a project I was working on.

 

[syn08]

I hired my first PhD as a consultant in 1974, what do you have to offer? This engineer designed a phase compensated anti-aliasing filter for a project I was working on.

John, I was just jesting. I don't do electronic design for a living, I'm only a hobbyst.

Some people around (including yourself) are taking DIY Audio waaaay to serious

 

[john curl]

I have been seriously been interested in audio design since 1963. That is a long time, and I don't bluff or kid around about it. Why people 'dilute' and 'pollute' this and other threads with half baked understanding or opinion, is beyond me.

 

[syn08]

Why people 'dilute' and 'pollute' this and other threads with half baked understanding or opinion, is beyond me.

See John, this is exactly the type of comment that makes me and others call you about. I'll save it this time, but not before reminding you that this is not a forum of audio professionals, but just another Internet corner where people (of all professions, skills, education levels, backgrounds, etc...) gather together.

This is essentially a pub and to expect that everybody stands and respectfully listens when you enter is nothing more than naive. You need another kind of reputation that that of a famous audio designers to be appreciated in a pub