John Curl's Blowtorch preamplifier part II

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Nice find ... but note two things: the sound is coming from a battery powered, pocket rocket amp he's sitting on, and the background noise is super benign ... no trucks, etc ...

I've been about 20 feet away from Tommy Emmanuel going full bore a couple of times - so it takes a bit to impress me ... :p. The funny story is, that as a lark he tried a bit of anonymous busking, and was paid no more attention to than any other busker!! ... just the sort of thing to put your ego in place ... :D
https://www.youtube.com/watch?v=Pt39tH6reCU
Yes .... They sit on little amps ..... So what ?
(I think this guy has some kind of looping pedal)
https://www.youtube.com/watch?v=EVbu8bh7SWk
Buskers are wired these days
 
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The original point was about listening to buskers with non-amplified, acoustic instruments ...

A spectacular example still stuck in my memory was going to an underground train station in Sydney - members of the Australian(?)Youth Orchestra were roaming the streets, having fun after giving a concert - and a string quartet ensemble were going for it, ripping into some classy musical bon-bons. Fantastic sound, ringing throughout the venue - no crappy PA bits and pieces, totally stuffing up the impact and richness of the music ...
 
I am not trying to create any mystery. I only revealed some early news about something that I heard. I said that I would attempt to duplicate what I heard, but right now I am in transition with my hi fi. Soon, I will have new speakers, and even though I am pretty sure I could hear this difference with the existing ones, I want to clean up my whole audio system before I do any more extensive listening tests.
For the record, I have traditional Bybee devices at the input of my speakers and in the power line, in my big system, and in the audio line of the Comcast driven TV cable system. I can tell the difference there too, but this new Bybee, is something somewhat different. I can barely tell when Bybees are in my system, normally, but this new Bybee was much easier to hear the improvement in groove noise. So far as I know, Jack Bybee is not going to sell this special new Bybee commercially.
 
That is what I hope to do, Dan.
I haven't had my system up to the level I am creating, for the last 22 years. I usually did my Bybee evaluations with STAX electrostatic headphones. I still have them but now I should be able to more easily evaluate 'mods' of all types when I finish cleaning up and I install my new reference speakers.
 
Cartridge/LP THD/IMD #'s

I guess that I am grossly out of date, but I found this today and was actually surprised by these numbers,.
Makes me wonder why anyone cares about the phono pre-amp or follow-on stages based on these distortion #'s when the source is as bad as it is. :D
So the THD/IMD numbers are right in line with the groove noise and people think LP's are the cats a$$:scratch1:
Maybe your ears/brain is tuned to a bad source/reference from the very beginning.
 

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I guess that I am grossly out of date, but I found this today and was actually surprised by these numbers,.
Makes me wonder why anyone cares about the phono pre-amp or follow-on stages based on these distortion #'s when the source is as bad as it is. :D
So the THD/IMD numbers are right in line with the groove noise and people think LP's are the cats a$$:scratch1:
Maybe your ears/brain is tuned to a bad source/reference from the very beginning.

“Young people get the foolish idea that what is new for them must be new for everybody else too. No matter how unconventional they get, they're just repeating what others before them have done.”

-Scot Wurcer
 
“Young people get the foolish idea that what is new for them must be new for everybody else too. No matter how unconventional they get, they're just repeating what others before them have done.”
I know, I can be a fool even in later life.
Despite the distortion, noise, channel separation etc a well setup vinyl system is the best I have ever heard.
Really makes me wonder of what makes for good sound if distortion/noise #'s are not very important for an LP but it is so important for everything there after.
So, a uA741 is okay then for a phono pre-amp then? What gives, knowing these facts? Once again, I am out of touch or just plain stupid or naive.
It's okay you can blast me for my stupidity, it won't be the first time.
 
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It sounds like it measures. Pretty sad. Not that it isn't entertaining... I enjoy the music from iPOds and FM and in car and everywhere, on everything (except LP -cause they wear out and increase distortion as they do it) - like a good consumer supporting the economy - but I never think it is accurate sound reproduction... that is another 'thing'. It doesn't sound accurate nor as the real instruments sound played without electronics. I guess its just one's frame of reference, is all.

We are going to take another trip going around in this whirlpool again?

Thx-Richard.
 
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Really makes me wonder of what makes for good sound if distortion/noise #'s are not very important for an LP but it is so important for everything there after.
The simple answer is that some types of distortion can be subjectively extremely irritating, or tiring - and others can easily be dismissed by the brain, mentally filtered out of the picture completely unconsciously. People often mumble about the need to apply subjectively meaningful weightings to distortion measurements, but this is almost immediately tossed into the Too Hard, or Too Inconvenient baskets, and forgotten about a few minutes later ...
 
People often mumble about the need to apply subjectively meaningful weightings to distortion measurements, but this is almost immediately tossed into the Too Hard, or Too Inconvenient baskets, and forgotten about a few minutes later .
Okay, maybe in another generation or more, once they figure out a bit more about how our brains work.
I have a slightly better understanding why the TI TPA3100D2 amp that I put together, sounds good too me and not so good in the measurement realm.
We are going to take another trip going around in this whirlpool again?
Okay I am done with it!!
 
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I agree vinyl can sound great BTW (it just measures poorly). :D

That statement (which I agree with) may point at the core of the conflicting views (and beliefs) between objectivists (predominantly measurements inclined) and subjectivists (predominantly listening experience inclined).

It seems that some audio designers, like J.C. (that is, John Curl), (whom I respect very much), are in the middle-ground -- they rely both on measurements and listening tests.
 
We are going to take another trip going around in this whirlpool again?

Thx-Richard.

Why bother, I have LP's I love some have never been put on CD and others have missing cuts on the CD. I totally enjoy some of them and frankly don't make much notice beyond the ticks and pops.

And I KNOW your sytem has too much bass for me.:)

EDIT - IMHO the RCA reissues of the old Reiner recordings on CD sound worse than that last 1/2 speed LP's also from RCA. I don't choose to pay collector prices for clean originals or the expensive reissues on vinyl.
 
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… but I never think it is accurate sound reproduction... that is another 'thing'. It doesn't sound accurate nor as the real instruments sound played without electronics.

No reproduction gear, at any cost, sounds like real instruments playing in the room -- be it digital or analogue.
What we are left with is the sense of music.
To my experience, on my audio setup, LP's give me better sense of music (that is, those [few] LP's which are in good physical condition).
 
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You have it: Joshua: "better sense of music".

Is that a learned response to the "signature" of vinyl playback? The cues (surface noise etc.) could be triggering a response that is independent of the music.

Many (probably most) records have been through a digital processing stage even if only in the groove computer. And some changes necessary to make the audio manageable on vinyl (mono bass, LF limiting gain riding) can also be the key effect that creates a "better sense of music". Until you can remove those effects you can't be sure its the vinyl that makes it better. (No one mentioned analog tape?)
 
Many (probably most) records have been through a digital processing stage even if only in the groove computer. And some changes necessary to make the audio manageable on vinyl (mono bass, LF limiting gain riding) can also be the key effect that creates a "better sense of music". Until you can remove those effects you can't be sure its the vinyl that makes it better. (No one mentioned analog tape?)
Go listen to something like Elvis Stereo 57 45rpm LP and get back to us.
 
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