John Curl's Blowtorch preamplifier part II

Status
Not open for further replies.
SY, I don't need any more 'attention' I'm world famous already. .

As a straw poll I checked with the 2 most rabid audiophiles at my office, one of whom is also a total deadhead. Neither of them have heard of you. But if you mean 'world famous' as Americans mean 'world series' then yes you are.

I should add I am nobody. And happy to keep it that way. This forum is my largest internet footprint.
 
RNM,
I would say except for a few companies that use someone's name for marketing most people couldn't name one audio designer. But if you mention Mark Levinson some will know the name. But who would know who started Threshold or so many other audio companies by the designer's name, not many I would suspect.
 
At the risk of actually introducing some science into a subject most people have knee jerk reactions to based on the marketing, maybe there is something physical going on with the bybees. My understanding is that there is some kind of ceramic material in the bybees. Could be wrong. I'm depending on my memory from discussions long ago.

One area ripe for investigation may be the broad parameter space of inductive devices that lay between ferrites and regular wire wound inductors. A gapless coil iron inductor, (except for laminations to prevent eddy currents) lies on one end of the spectrum. Ferrites lie on the other end with essentially an infinite number of gaps between iron particles. The first type limits ac down almost to dc. The second type doesn't start limiting ac until many hundreds of kHz usually. I'm sure there are individuals here who have more technical expertise than me.

The point is that there may be examples of inductors with some kind of amorphous materal with gaps in the magnetic material that lie in an intermediate range between the known nearly infinite number of gaps in ferrites and the nearly gapless iron core inductors. Do we know for sure that those intermediate range inductors couldn't have properties that haven't been fully investigated and that would effect the audio frequencies that we don't know about?

I would encourage people to have an open mind about the Bybees and not just develop an opinion based on how Mr Bybee markets them. A lot of us don't pay much attention to that. We aren't imagining the differences we hear.
 
(reply to 82468) My understanding based on the resident Canoga Park audiophile (not me!) is that there are carbon nanotubes shunting the 25 milliohm resistor. Paul R. is scientific enough by background that he can be persuaded that something is going on, and he chats with Jack Bybee. He is not able to do controlled listening tests nor is he interested in them. However he does listen to his system a lot, as does his conductor/musician/photographer wife.

I went to an amplifier shootout which was attended by a number of folks. Paul bought the new amp from the one guy on the spot, wrote out a check for twelve thousand dollars. I thought I heard a slight difference between it (a modified MOSCODE) and Paul's Bryston. Both were driving big Sound Lab electrostats. My discussion with the amp guy was inconclusive, particularly as at one point after describing problems he'd had that sounded to me like VHF MOSFET oscillations, he said well the impedance driving the MOSFETs is so low that can't be a problem.
 
Last edited:
I would add that people have tried measuring Bybee Quantum Purifiers every which way with various pieces of test equipment and have found no departure from the anticipated behavior of the unadorned resistor. Whatever is invoked by way of magnetic effects by whatever means has to be reconciled with a 25 milliohm resistor, it would seem.
 
At the risk of actually introducing some science into a subject most people have knee jerk reactions to based on the marketing, maybe there is something physical going on with the bybees. My understanding is that there is some kind of ceramic material in the bybees. Could be wrong. I'm depending on my memory from discussions long ago.

One area ripe for investigation may be the broad parameter space of inductive devices that lay between ferrites and regular wire wound inductors. A gapless coil iron inductor, (except for laminations to prevent eddy currents) lies on one end of the spectrum. Ferrites lie on the other end with essentially an infinite number of gaps between iron particles. The first type limits ac down almost to dc. The second type doesn't start limiting ac until many hundreds of kHz usually. I'm sure there are individuals here who have more technical expertise than me.

The point is that there may be examples of inductors with some kind of amorphous materal with gaps in the magnetic material that lie in an intermediate range between the known nearly infinite number of gaps in ferrites and the nearly gapless iron core inductors. Do we know for sure that those intermediate range inductors couldn't have properties that haven't been fully investigated and that would effect the audio frequencies that we don't know about?

I would encourage people to have an open mind about the Bybees and not just develop an opinion based on how Mr Bybee markets them. A lot of us don't pay much attention to that. We aren't imagining the differences we hear.
Huuuh??
 
Jacco,
Problem is that the audience here are audio educated and that is not the general public. Ask anyone under perhaps 40+ years old on the street to name one of those named manufacturers and you would most likely get a blank stare. We are talking about the general public and not the crowd on here. Most people I recon wouldn't know that Pass Labs was owned by Nelson Pass. How many could even tell you what JBL stands for? The crowd on this thread don't count in my eyes as the general public in any sense.
 
Let me introduce myself:

I just love to rub it in, SY! '-)
 

Attachments

  • TAS book 1-19-16 004.jpg
    TAS book 1-19-16 004.jpg
    566.1 KB · Views: 216
Radford. Tim De Paravacini, Bandor, spendor , harbeth etc. Rossi I view as an internet newbie. Ask me again in 20 years when he has a track record.

Oh and kings of weird, YBA and DNM.

I could go on. There is a world outside the USA...

Including speakers makes the list endless.

Vinnie R. has been around just over 10 years now. I thought the question was familiarity, not notoriety.
 
At the risk of actually introducing some science into a subject most people have knee jerk reactions to based on the marketing, maybe there is something physical going on with the bybees. My understanding is that there is some kind of ceramic material in the bybees. Could be wrong. I'm depending on my memory from discussions long ago.

One area ripe for investigation may be the broad parameter space of inductive devices that lay between ferrites and regular wire wound inductors. A gapless coil iron inductor, (except for laminations to prevent eddy currents) lies on one end of the spectrum. Ferrites lie on the other end with essentially an infinite number of gaps between iron particles. The first type limits ac down almost to dc. The second type doesn't start limiting ac until many hundreds of kHz usually. I'm sure there are individuals here who have more technical expertise than me.

The point is that there may be examples of inductors with some kind of amorphous materal with gaps in the magnetic material that lie in an intermediate range between the known nearly infinite number of gaps in ferrites and the nearly gapless iron core inductors. Do we know for sure that those intermediate range inductors couldn't have properties that haven't been fully investigated and that would effect the audio frequencies that we don't know about?

I would encourage people to have an open mind about the Bybees and not just develop an opinion based on how Mr Bybee markets them. A lot of us don't pay much attention to that. We aren't imagining the differences we hear.
A voice of reason. 😎.

My experiments are causing differences in two copies of the same file recorded to a usb thumb drive.
I have not yet bothered to measure anything, but the differences are so definite that a blind man would see them.
Bybees work, but there are better ways.

Dan.
 
Status
Not open for further replies.