John Curl's Blowtorch preamplifier part II

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So I post just saying something obvious, because I have no reason to believe he was utterly confused and heard the wrong word, and you post this afterword? What the :censored: do I care to read this? We all know plenty about Jack Bybee, and this finger pointing gets really god damn old. It's like trying to tell someone cigarettes are bad, we all know how people feel on it :rolleyes:

A scam is a scam is a scam.
What a boring statement.
Only surpassed by the eternal discussions about this BS!
 
Sorry you don't like my comment, but it is the truth....
.....as you know it.
Never seen anything like a ferrite on any of the Bybee technology pages and never have, I was just pointing out that Bybee QP devices cannot be moved up and down a cable... which I believe was what was being implied...
I also questioned the 'sliding' comment.
It is things like the Bybee stuff that do give the hobby a bad name, and I think we should all work to getting some aspect of the hobby back into reality...
Hmmmm, you guys are giving Bybee a bad name, or at least setting out to do so.
The curious thing is that all you guys who denounce the character of Mr Bybee have never tried his devices/products.
Please understand that I do not actually endorse his products and much less his pricing.

That said, guys, I do possess and have tried BQP's and they do alter system sound, no ifs or buts about it.
The change is relatively subtle, but once you recognise the change, there is no going back, they cannot be 'unheard'.
That said, whilst I appreciate the fact of such system change, but I don't like/enjoy the change and they would ultimately drive me out of the room.....big words.

I think we all understand the importance of correct electrical design (schematic) and the importance of correct layout (emc etc), but in my experience this is not the last word in electronic designs/products.

I have commented in the last day or so that I am able to reliably/consistently change the sound of a battery powered player device on the fly by applying a a charging current for 10 seconds or so.

There is more going on than is described in standard theory.

Dan.
 
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No it isn't Andrew, and you can easily see it by looking at the circuit diagram. There is a series L followed by a // C. Obviously it works differently depending on which side you place the source.

Jan
Look at the sch on the label of a filtered IEC socket.
It has Cx across the lines on both sides of the inductance.
It is DESIGNED to work both ways.

That way a manufacturer buys in the filter and know that it attenuates incoming noise and attenuates outgoing noise.
If that does not meet regulation he looks for a better filter.
 
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Who cares about descriptions, stories, sales pitch etc, the fact is BQP's do change system sound.
Surely that should pique one's interest, instead of the reaction of derision.

Dan.

I'm interested, but not willing to pay money for such a thing. If somebody wants to send me one for evaluation (or even better, including for possible destructive testing) that would be great. I do find myself skeptical of the claimed theory of operation, and I would guess this is the source of much derision among some people, that and the pricing. But it seems plausible that they might do something or other depending on how they are hooked up to a system. If they do in fact cause the sound to change, it most likely could be explained by conventional physics.
 
I'm interested, but not willing to pay money for such a thing. If somebody wants to send me one for evaluation (or even better, including for possible destructive testing) that would be great. I do find myself skeptical of the claimed theory of operation, and I would guess this is the source of much derision among some people, that and the pricing. But it seems plausible that they might do something or other depending on how they are hooked up to a system. If they do in fact cause the sound to change, it most likely could be explained by conventional physics.

That's been done. It's a resistor wrapped in BS, sold by an amoral scam artist (and hyped by hucksters) to people who are too ignorant and gullible to know better.
 
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We have a dear neighbour that buys these little yellow round things from the local hardware store.

They have a gritty, chalky texture. She cuts about 2cm off every week and puts it in her dogs water bowl during the summer.

These things are sold on the basis that they 'cool the dogs blood'.

So, the USA has Jack Bybee, but looks like the Brits have worse . . .

Consider yourself lucky SY.

Separately, do you not have the equivalent of the UK's 'Advertising Standards Authority'?

In Australia, Nurofen were selling the same pain medication (i.e. the IBUPROFEN based tablets were exactly the same) but in different packaging and then pricing them differently so for example, pain relief for menstrual cyclew was AUS$4-00 while for a man headache it was AUS$2 (I'm just using 'placeholder' prices here).

The Australian authorities made them remove the differentiation - i.e. not allowed to sell the same product in different packaging and at different prices.
Our Oz friends will have the details, but its this kind of stuff I love about the place: zero tolerance for b.s. Would be great if places like the UK and USA would also step up to the plate on issues like this. Don't get me started on cosmetics either.
 
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www.hifisonix.com
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Look at the sch on the label of a filtered IEC socket.
It has Cx across the lines on both sides of the inductance.
It is DESIGNED to work both ways.

That way a manufacturer buys in the filter and know that it attenuates incoming noise and attenuates outgoing noise.
If that does not meet regulation he looks for a better filter.


Please look here:-
 

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www.hifisonix.com
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What like a ferrite.... The guys a scam artist as are his products and a perfect example of where audio is going wrong.....

Here is an example of one scam product...
BYBEE QUANTUM SIGNAL ENHANCER

Total scam, rip off and highest concentration of BS I have ever seen....

Yeah, and a mains filter that blocks most RFI, crap from PLC etc as quantified by measurement is rejected because it has a ferrite in it.
 
Was doing some late night work on my power amp and could not get a clean - i.e noise free signal from my new Tektronix scope while monitoring the output of my amp. I've got ~72 kHz at c. 100mV pk-pk coming out of my power amp - both channels. I'm sure its not a stability issue - the square wave plots are well behaved and the bias current and offset are stable. When I unplug the input, its quiet. The cable from my sig gen to my amp is about 500mm long and not of a particularly good quality.

Anyway, with the Tek plugged in and showing a less than ideal trace, I powered up the Rigol. Same thing - so it must be the amp.

I power down the Tektronix for some reason - the problem disappears. That cannot be. I power it up again. 72 kHz showing on the Rigol.

Turns out, the LCD screen, or the Artesyn power supply that sits behind it (I can see the name through the ventilation slots) is pumping this dirt out. I wound a few turns of wire into a coil and connected it to the rigol. Its definitely coming from the Tektronix.

The low level trace (5mV FS) on the Rigol is clean, but not the Tek. I've been chasing my tail for hours.

Anyone have a similar experience and do I have grounds to tell Tek its not acceptable? Its a 4 channel 200 MHz BW 1GS scope.

Oh how I miss my Philips analog scope . . . .

Tek scopes, cable modems, cheap SMP wall warts etc. All had to go.
 
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