A very similar situation applies to most high end speaker cables. While there are speakers with high end speaker wire inside, they are IME very much in the minority. Doesn't keep people from using high end cable and claiming dramatic improvements in SQ. And of course, most equipment has ordinary power wiring inside.
Well, my DIY monoblocks are all wired with Neotech UP-OCC hook-up wire.
The same goes for the speakers and DAC.
The wires from the IEC to the transformers are generic, because this is the way these cheapo transformers were made.
It's a mater of time and finances to upgrade these as well.
So it would seem.Arny, I think you are practising double blind reading

I will admit to some "double blind" reading myself, from time to time.
A technical explanation of what this test demonstrates about power cords would be interesting. Currents, impedance, etc.; that kind of stuff. No math required, general concepts only. That they don't act as 120 Hz low pass filters?
Its a DIY home Conducted Immunity EMC test...
Please do 🙂I could describe a simple test fixture I made for inserting a quantifiable amount of line noise on the power line, or alternator whine on a 12 volt supply, and describe the testing we did, but I know where that will go.
I'd like to build and keep it in my bench.
Thanks.
Here is a link to Keith Armstrong's documentation on both EMC compatibility testing and design notes, you may have to register with EMC Club, but its worth it.
EMC Information Centre
EMC Information Centre
I was already registered but not logged in.
The link took me to the log in page.
After I logged in, in another open tab
I clicked the link again and this time it took me straight to the Arnstrong list. Too many to read this year!
The link took me to the log in page.
After I logged in, in another open tab
I clicked the link again and this time it took me straight to the Arnstrong list. Too many to read this year!
Interestingly, the designer of my preamp
Said that tests showed no improvement with boutique cord. He said that the preponderance of quality, and the aspects we view as high fi, recide in supplying reliable, clean power. He said that if you need a power condition of any type, the designer of the power supply didn't do their job.
It is true that many designers don't make the best power.
His entire career was in broadcast and studio equipment.
Said that tests showed no improvement with boutique cord. He said that the preponderance of quality, and the aspects we view as high fi, recide in supplying reliable, clean power. He said that if you need a power condition of any type, the designer of the power supply didn't do their job.
It is true that many designers don't make the best power.
His entire career was in broadcast and studio equipment.
Doesn't happen.
Either that, or he is trying to pi$$ me off. I bit on this once, no more.
This test demonstrates nothing about power cords. It will however find SOME, not ALL amps that have poor immunity to line coupled noise. If your amp is blind enough to a purposeful dose of noise that is predominately in the audio range, then the minute amount of protection that could allegedly be offered by a magic power cord should have no audible effect on line noise of a much lower magnitude, and often out of the audio band.
I use this test, and several others on every amplifier I make to find problems early.
Granted this is not a controlled test, my drill is not the same as your drill, and the amount of coupling to the power line depends on the resistance (and inductance) between the point that the amp and drill meet, and the AC source. Add a coiled up extension cord to increase the noise.
I could describe a simple test fixture I made for inserting a quantifiable amount of line noise on the power line, or alternator whine on a 12 volt supply, and describe the testing we did, but I know where that will go.
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I am just curious, because I seem technically uneducated and I cannot build immune to line noise, high quality power supplies. How should a power supply be built then? 😀
Just because until now, I've never listened to a hi-end system where the swapping of a power cord on an active device, be it CD player, computer, amplifier didn't influence the sound. The same goes for same power cords with different plugs, IECS and sockets. Are almost all commercial hi-fi devices flawed? From your point of view, yes. Why don't you enlighten us how a power supply should be built then?
Just because until now, I've never listened to a hi-end system where the swapping of a power cord on an active device, be it CD player, computer, amplifier didn't influence the sound. The same goes for same power cords with different plugs, IECS and sockets. Are almost all commercial hi-fi devices flawed? From your point of view, yes. Why don't you enlighten us how a power supply should be built then?
Are almost all commercial hi-fi devices flawed?
No. Your evaluation methods are flawed.
I am just curious, because I seem technically uneducated and I cannot build immune to line noise, high quality power supplies. How should a power supply be built then? 😀
There are cook books for building power supplies, and they generally work out.
Just because until now, I've never listened to a hi-end system where the swapping of a power cord on an active device, be it CD player, computer, amplifier didn't influence the sound. The same goes for same power cords with different plugs, IECS and sockets.
Many have run into that problem, and found that upgrading their listening
situation can solve that problem.
Are almost all commercial hi-fi devices flawed?
If this a philosophical question, then of course the answer is yes.
Practically speaking, there is a lot of audio gear of the electronic and/or digital persuasion that is sonically ideal. IOW when interposed in a very fine working system, it causes no audible changes.
From your point of view, yes. Why don't you enlighten us how a power supply should be built then?
I suspect that the problem starts with the evaluation technique. It is scientifically known to be like a coin that always comes up the opposite of what you bet on.
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But your system picture I linked shows the wires exposed to the "contaminants" after the power cord terminal. 😱Well, my DIY monoblocks are all wired with Neotech UP-OCC hook-up wire.
The same goes for the speakers and DAC.
No. Your evaluation methods are flawed.
If you're so confident to say so, okay. 😀
Can you give an example? Mine are all cookbook power supplies and maybe I've missed something?There are cook books for building power supplies, and they generally work out.
What is this supposed to mean?Many have run into that problem, and found that upgrading their listening
situation can solve that problem.
Can you please define "sonically ideal". I'm glad to speak with someone who has possibly listened to a perfect system or a perfect component.Practically speaking, there is a lot of audio gear of the electronic and/or digital persuasion that is sonically ideal. .
Nice way to escape my questions and requests. I just adore it. 😀I suspect that the problem starts with the evaluation technique. It is scientifically known to be like a coin that always comes up the opposite of what you bet on.
But your system picture I linked shows the wires exposed to the "contaminants" after the power cord terminal. 😱
Please re-read post 141.
Are you crazy?Just because until now, I've never listened to a hi-end system where the swapping of a power cord on an active device, be it CD player, computer, amplifier didn't influence the sound.
I have never ever listened to **any** device, good or bad, where sound changed, for better or for worse, because of the power cable, and that's the experience of 99.998% of people; the 0.002% dissenters being here posting impossible claims.
Am arguing with you and trying to change your mind?
No way, for the same reason I won't try to "argue" with the strait jacketed guy in the padded cell.
Please enjoy your illusion, if that's all you have left in Life.
ac dc power supplies
You've already got two pieces of advice that say that its your evaluation technique and not the technical performance of the equipment that is the most probable fault. Not good enough?
Here are some more references, but they aren't going to fix the most probable problem:
http://www.amazon.com/dp/0790611201/?tag=ianpurdie95-20
http://cds.linear.com/docs/en/application-note/AN140fa.pdf
https://books.google.com/books?id=S...e&q=linear electronics power supplies&f=false
Bad science when it comes to listening evaluation techniques can overcome good science when it comes to circuit design.
A sonically ideal audio component will make no audible changes in any signal that it processes. except of course that is the goal of the processing.
Do try to be nice. It's hard to help people who think they know better than the people whose time they are wasting by asking questions that they already think they know better answers to.
Can you give an example? Mine are all cookbook power supplies and maybe I've missed something?
You've already got two pieces of advice that say that its your evaluation technique and not the technical performance of the equipment that is the most probable fault. Not good enough?
Here are some more references, but they aren't going to fix the most probable problem:
http://www.amazon.com/dp/0790611201/?tag=ianpurdie95-20
http://cds.linear.com/docs/en/application-note/AN140fa.pdf
https://books.google.com/books?id=S...e&q=linear electronics power supplies&f=false
What is this supposed to mean?
Bad science when it comes to listening evaluation techniques can overcome good science when it comes to circuit design.
Can you please define "sonically ideal". I'm glad to speak with someone who has possibly listened to a perfect system or a perfect component.
A sonically ideal audio component will make no audible changes in any signal that it processes. except of course that is the goal of the processing.
Nice way to escape my questions and requests. I just adore it. 😀
Do try to be nice. It's hard to help people who think they know better than the people whose time they are wasting by asking questions that they already think they know better answers to.
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Are you crazy?
I have never ever listened to **any** device, good or bad, where sound changed, for better or for worse, because of the power cable, and that's the experience of 99.998% of people; the 0.002% dissenters being here posting impossible claims.
Am arguing with you and trying to change your mind?
No way, for the same reason I won't try to "argue" with the strait jacketed guy in the padded cell.
Please enjoy your illusion, if that's all you have left in Life.
Thank you for the great attitude and fine manners you show. For my gratitude, I'm copy/pasting the same text you wrote towards you.
You missed the point. So much of your wires are exposed to "contaminants". Until you get yourself permanent shielding over your components, I suggest this product to protect your investments.Please re-read post 141.
Can you please provide a link to a reference or document? I would love to read the research paper as it would show up all the audiophools on this thread for making their wild unsubstantiated claims.that's the experience of 99.998% of people; the 0.002% dissenters being here posting impossible claims.
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In order to become an audiophool, one would have to make wild unsubstantiated audible claims.audiophools on this thread for making their wild unsubstantiated claims.
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