John Curl's Blowtorch preamplifier part II

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I had them first so it was before SY's evil spirit invasion.

In quantum world, present and future time are one and the same (remember, fast electrons). Whatever is in there, knew what’s going to happen next.

(1) I used them straight out of the box, (2) then broke them in for 7 days I think it was, (3) with a small amp and a dummy load and (4A) did a second listening test. (4B) Just to confirm, I have lots 'o' tweeters with which to test. (4C) I also did a small amount of testing with larger drivers.

I marked the mistakes in your procedure:
1. You missed worshiping them first.
2. Seven days is zero time with these quantum xxx, ask SY. So, there was no break-in.
3. Should be a dummy amp and a small load (in quantum reality, phenomena are upside-down)
4(A,B,C) Obvious luck of belief. What did you expect then as an outcome!

When you will test the new generation of these devices, try not to repeat these mistakes.

George
 
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Seven is equal to one for small values of seven.

:worship: (Does the same applies to eight?)

To be clear, John has NEVER been restricted from making any technical argument he likes, or presenting any data he's gathered. Never. Ever. If he's got an argument or data here, let's have it.

You just violated forum rule #16. That’s not good.
And I think that “technical” was an unnecessary restriction.

George
 
Technical proof enough?
 

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Richard, this was made about 20 years ago from AMES Research Lab on the SF peninsula. It is the output from a power line analyzer. I have other supporting measurements, but they show mostly that the device will look mostly like a resistor. In those days, 0.3 ohms or so was the standard resistance. Today it is 0.025 ohms.
 
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I will take issue with your wording if you don't mind. What you heard is very likely what you would have heard with them out of the system. I own the pair the SY did his testing on, and my testing, although completely subjective, aka listening tests) showed no discernible difference on any tweeter I tried, and that includes many in number and type. I am not hear to badmouth them but I feel I am the wrong person to have purchased them, not being able to tell if they were in the circuit or not.
Cal, I'm afraid my skepticism wasn't adequately expressed. I tend (as I've said from time to time on this site) to be remarkably resistant to suggestion when listening to audio. Of course the standard response, from the believers in a particular tweak, is that I just don't have very sensitive hearing.

But I can spot some fairly subtle things that have always turned out to be explicable via well-founded physics, like a recent case of a significant time delay in a wireless subwoofer, when the other party was persuaded that things would be corrected with equalization in the frequency domain.

So I am not surprised, based on what I have read, that the Bybee stuff is subtle at best. And having said that, I would really like to find something that (a) I can hear and (b) would be a suitable subject for study, to understand it.
 
where is this from so I can read it? Affect is between N-G?

-RNM

its exactly what he posted on at least one other occasion, thats what it is.

not sayin 'you should have seen that before, why ask?' just that its just recycled 'information' not something that wasnt included in the argument long ago. this 'conversation' seems to have been going on for at least a decade as far as I can tell?

@gpagag

yes I did also notice that 'we'
 
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What's difficult in all this is that some things make dramatic differences in waveform shape, such that programs like DiffMaker are struggling or are completely useless in providing meaningful information - a somewhat 'extreme' version is having multiple digitised copies of a particular LP, using a very high quality TT - the wow factor alone is beyond the capabilities of the program to deal with. Yet, people listening will state that the playbacks are essentially identical ...

And on the other hand seemingly identical waveforms, nulling to very high levels, are still, by ear, distinctly different. Then it comes down in part whether the listener feels that one version is 'superior', in a way that is definitely relevant in a long term sense. And therefore, whether the tweak that caused that difference is of significant value ...
 
I've been using Eupen mains cord for decades. EMI filter in the plug, well screened, hard wired to the power amp. Yes I know, it kills the aftermarket, but wtf.

Kills the aftermarket? Not when you take those same Eupen cords, cover them with some Techflex and heatshrink and sell them for several hundred dollars like JPS Labs did. :D

They eventually got busted, but only when someone who owned one had the unmitigated audacity to cut off the Techflex and heatshrink to see what was underneath.

Now they're trying to sell a $5,000 headphone.

se
 
Having been threatened with a lawsuit over these devices, due to my comments, I have rather a bee in my bonnet over them, plus I think they are a shining example of the total lack of Integrity that a lot of high end audio runs on.

Who threatened you? I've been talking about them for years, calling Bybee a quack, a fraud and a charlatan. Haven't heard a peep from anyone. And I live in the United States. I'd hate to think how difficult it would be to bring a libel suit against someone in Europe.

se
 
Who threatened you? I've been talking about them for years, calling Bybee a quack, a fraud and a charlatan. Haven't heard a peep from anyone. And I live in the United States. I'd hate to think how difficult it would be to bring a libel suit against someone in Europe.

Unfortunately, it's very easy in Great Britain. Unlike the US, truth is not a defense.
 
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