Hi Tryphon,
If a Bybee device does anything, and I mean anything at all, this test would show that to be true. Anything you can hear will be easy to measure as an effect on a power supply bus. So maybe a definitive test on these mysterious little resistors that doesn't involve any destructive testing. A test that doesn't involve trying to measure the device, but rather it's effect(s) on another device as claimed. The tested device can run as a series of three tests. The first with nothing there, the second with the Bybee, and the third run with a resistance equal to the Bybee.
-Chris
That's an extreme take on what I posted that is further from the truth than I could ever even think of. It was a kind of a joke but also with some more serious meaning.
If a Bybee device does anything, and I mean anything at all, this test would show that to be true. Anything you can hear will be easy to measure as an effect on a power supply bus. So maybe a definitive test on these mysterious little resistors that doesn't involve any destructive testing. A test that doesn't involve trying to measure the device, but rather it's effect(s) on another device as claimed. The tested device can run as a series of three tests. The first with nothing there, the second with the Bybee, and the third run with a resistance equal to the Bybee.
-Chris
That's fair. I mostly agree across the board, other than the hardware requirements. At least for the crew we have circulating this thread, a 24/96 usb sound card and something like Bob Cordell's distortion magnifier goes a very long way towards consistently seeing -100 dB spurs (quite likely better). Hardly megabucks.
Similarly, I'm not expecting people to provide graphs of measurements as most folks aren't inclined to do it (myself included). But human beings are unreliable under the best of circumstances (myself included). In general, I'd assume I'm deaf.
Here is the special isolation transformers' CMR used in -7000. The bottom is -100dBv; freq range shown is 100Hz to 30MHz.
There are 2 traces -- the best one on bottom is the one I finalized upon.
View attachment CMR trans 7000.pdf
This is transformer alone... no filters etc on I/O
THx-RNMarsh
There are 2 traces -- the best one on bottom is the one I finalized upon.
View attachment CMR trans 7000.pdf
This is transformer alone... no filters etc on I/O
THx-RNMarsh
100dB of attenuation at 1kHz? Is it CM to differential?
Oh, I see, this is CM. J&K isolation transformers have similar spec. J&K Audio Design: Isolation Transformer Bandwidth
Oh, I see, this is CM. J&K isolation transformers have similar spec. J&K Audio Design: Isolation Transformer Bandwidth
Last edited:
In a little light relief was in London today showing the nipper the dinosaurs in the museum and there was a wall of famous paleontologists. Amongst these was the impressively bearded Othniel Charles Marsh. The mind plays tricks but I'm sure I see a family resemblance with Richard's avatar. Any link?
Attachments
"Based on a breakthrough in quantum purification technology."
"Optimizing connectivity and streamlining"
I don't know about 'popular opinion', but ... I read those words and I can not help but smile. How can-you, J.C., agree with such a B.S. ?
And when I read this page,
Bybee Technologies LLC | Our Technology
I'm teleported directly into a parody of a science fiction novel (B series).
This said, I have no idea if those device can change the sound or not and how because I never tried any one. If they do, it is certainly not for the reasons mentioned, but I will never know, I'm not rich enough to risk $ 250 on a pinch of stardurst.
Probably similar prices, too? J&K Audio Design: Toroid Isolation Transformer Prices
Some nice features though.
J&K Audio Design: Ultra Isolation Power Transformer
T, I don't blame you for your opinion (without trying) of Jack Bybee. His 'marketing' on his website, sets my teeth on edge as well. However, I use his stuff, and it works (mostly) in a useful way.
Jack Bybee was, when he was younger, an extremely qualified physicist, exposed to military secrets and positioned to improve things back in the 'cold war with the USSR'. So far as I know, his contributions were mostly on listening improvements for Russian submarines' 'signatures' and this is when he formulated what is now called a Bybee purifier. He is continually pressed between explaining what his device does and keeping it secret, and so far he hasn't told me enough that I could make one myself, or even really understand what it does, BUT it does work, and I have heard it work in a number of situations. It is expensive, and I don't recommend it to anybody, except the very wealthy who have done their best already to make the best audio system possible in their home. A favorite customer of his is an eye surgeon who lives near me. His hi fi must be worth at least 1/2 million dollars at this time, and he just loves Bybee devices of all sorts. This person is rather conservative, has a family, is very wealthy (independently of his profession), and does not advertise his presence in the audio world. But what a sound system! One of the best that I have ever heard in my life (for digital).
I don't really care whether you believe that Jack Bybee is legitimate, and neither does Jack. His customer base loves him and that is why he keeps going, even though he is about 89 or so at the moment.
I spoke to him this week, when he called me on the phone, but we did not talk about his devices. It was just an offer to buy the speakers from a deceased mutual friend, at less than 10% of their original retail. I passed it on to another mutual friend and this guy happily bought them. The speakers were too large for my apartment, but perfect for our mutual friend. Generally, Jack works alone or with one or two extended family members. etc, etc. What I am trying to say, it that he is a regular guy, who has taught me more physics than anyone I know, but we normally talk about other things together.
Perhaps you should talk with YBA about physics and audio components. He is closer to you, and he does similar stuff.
Jack Bybee was, when he was younger, an extremely qualified physicist, exposed to military secrets and positioned to improve things back in the 'cold war with the USSR'. So far as I know, his contributions were mostly on listening improvements for Russian submarines' 'signatures' and this is when he formulated what is now called a Bybee purifier. He is continually pressed between explaining what his device does and keeping it secret, and so far he hasn't told me enough that I could make one myself, or even really understand what it does, BUT it does work, and I have heard it work in a number of situations. It is expensive, and I don't recommend it to anybody, except the very wealthy who have done their best already to make the best audio system possible in their home. A favorite customer of his is an eye surgeon who lives near me. His hi fi must be worth at least 1/2 million dollars at this time, and he just loves Bybee devices of all sorts. This person is rather conservative, has a family, is very wealthy (independently of his profession), and does not advertise his presence in the audio world. But what a sound system! One of the best that I have ever heard in my life (for digital).
I don't really care whether you believe that Jack Bybee is legitimate, and neither does Jack. His customer base loves him and that is why he keeps going, even though he is about 89 or so at the moment.
I spoke to him this week, when he called me on the phone, but we did not talk about his devices. It was just an offer to buy the speakers from a deceased mutual friend, at less than 10% of their original retail. I passed it on to another mutual friend and this guy happily bought them. The speakers were too large for my apartment, but perfect for our mutual friend. Generally, Jack works alone or with one or two extended family members. etc, etc. What I am trying to say, it that he is a regular guy, who has taught me more physics than anyone I know, but we normally talk about other things together.
Perhaps you should talk with YBA about physics and audio components. He is closer to you, and he does similar stuff.
This isnt the -7000 but it is something you can all try out on your products ---
You all know that you can make a good isolation transformer by placing two transformers back-to-back..... secondary to secondary.
One of the problems of adding filters to 120-240 vac circuits is the reliability of the Caps used. They must be suitable for that application. But if you use 2 transformers that drop down in voltage on the secondary (say - 24v) then between the secondaries a filter can be placed with low voltage parts.
If you also use transformers which are wound side by side and not on top each other, the C between pri and sec will be very low. Two of these in series back-to-back will have even lower C from input to output. Plus the two transformer physical spacing. Exceedingly low C from I to O.
In fact, this is what I gave Markw4 because he has a power amp with smps and a DAC with same. Or some form of switching PS....both put unwanted noise/freq on the ac power line.
All can afford this easier than super isolation transformers ($$$). Two I/O shown in the chassis.
Enjoy.
THx-RNMarsh
You all know that you can make a good isolation transformer by placing two transformers back-to-back..... secondary to secondary.
One of the problems of adding filters to 120-240 vac circuits is the reliability of the Caps used. They must be suitable for that application. But if you use 2 transformers that drop down in voltage on the secondary (say - 24v) then between the secondaries a filter can be placed with low voltage parts.
If you also use transformers which are wound side by side and not on top each other, the C between pri and sec will be very low. Two of these in series back-to-back will have even lower C from input to output. Plus the two transformer physical spacing. Exceedingly low C from I to O.
In fact, this is what I gave Markw4 because he has a power amp with smps and a DAC with same. Or some form of switching PS....both put unwanted noise/freq on the ac power line.
All can afford this easier than super isolation transformers ($$$). Two I/O shown in the chassis.
Enjoy.
THx-RNMarsh
Attachments
Last edited:
This isnt the -7000 but it is something you can all try out on your products ---
You all know that you can make a good isolation transformer by placing two transformers back-to-back..... secondary to secondary.
One of the problems of adding filters to 120-240 vac circuits is the reliability of the Caps used. They must be suitable for that application. But if you use 2 transformers that drop down in voltage on the secondary (say - 24v) then between the secondaries a filter can be placed with low voltage parts.
If you also use transformers which are wound side by side and not on top each other, the C between pri and sec will be very low. Two of these in series back-to-back will have even lower C from input to output. Plus the two transformer physical spacing. Exceedingly low C from I to O.
In fact, this is what I gave Markw4 because he has a power amp with smps and a DAC with same. Or some form of switching PS....both put unwanted noise/freq on the ac power line.
All can afford this easier than super isolation transformers ($$$). Two I/O shown in the chassis.
View attachment 686297 Enjoy. THx-RNMarsh
Your regulation will go down the drain hole but if that is acceptable then it will surely work - as will plenty of other methods.
The most difficult thing to achieve is good (tight) regulation AND good noise isolation.
One guy I know actually used a CVT (ferroresonant transformer) and *nothing* gets through these however they do make a bit of noise themselves due to core saturation harmonics which is filtered in the resonant OP circuit.
T
I did, if you looked inside you would laugh even harder. I tested the claim of improving "any" video monitor, nothing.
Last edited:
Sure. Maybe not all the implementations were equal, and maybe not all the line noise and load sensitivity conditions at every location were equal, not to mention whatever other differences?
We don't expect everybody's amplifier designs and builds to be equally satisfying either. Good engineering is necessary and even at that some line and load conditions may require custom mitigation.
As with DACs and amps, good and cheap are often conflicting goals despite the fact that throwing money at a problem is no guarantee success.
So, now that we mentioned what can be wrong with power conditioner designs, what would you all do to make an exceptionally good one and at what cost? What test equipment and tests do you use, or did people use who's designs have been mentioned in order to verify design goals and help guide development?
Last edited:
- Status
- Not open for further replies.