You say that the clamp on ferrites rolled off the top end. Just a Bode plot with and without ferrites would do. Thank you!
I used a BR@349 Belief meter with a quasi Taguchi method and a sample of 14.5 people in a longitudinal test over 17 years. However I stored the results audibly in an echo chamber and the resonant frequency inside the vessel seems to be causing me some problems to retrieve the information so that I can share with the statistically minded, sorry.
Don't see why it can't be one of the potential problems under discussion that may be improved by well designed power conditioning. Certainly the DC offset you speak of can also be a problem, especially with torroids.
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Doing a Bode plot implies looking at frequency response. That may or may not be all there is to it. In other words, looking at frequency response and finding little or no change does not necessarily mean all possible measurable explanations have been considered.
As DF96 (RIP) pointed before out noise can sometimes noise can sound like increased detail. Sometimes removing the noise may then leave a more dull type of sound.
In addition, Bruno Putzey measured a type of semi-signal-correlated noise from ferrite inductors that some people can hear.
Only point is that frequency response may not be everything one might want to take a look at to find some measurable change that correlates with reported perceptual changes.
As DF96 (RIP) pointed before out noise can sometimes noise can sound like increased detail. Sometimes removing the noise may then leave a more dull type of sound.
In addition, Bruno Putzey measured a type of semi-signal-correlated noise from ferrite inductors that some people can hear.
Only point is that frequency response may not be everything one might want to take a look at to find some measurable change that correlates with reported perceptual changes.
The Late Great Charles Hansen of Ayre was a member here and he posted this about Ferrites on another audio site. Sure miss Charles.
https://www.audioasylum.com/audio/digital/messages/14/144698.html
https://www.audioasylum.com/audio/digital/messages/14/144698.html
Perhaps the background noise "dither" is the reason that many "live" recordings sound so good.
FWIW, recommend getting the newly released production of Barbara Streisand "Live at the Bon Soir" -- from Columbia tapes made in 1962 (when her career was just beginning).
I am further reminded of the tale, probably apocryphal, of the late Bob Pease conducting an audition of capacitors. One of the other Nat Semi folk said that Pease's hearing was very bad!
I found this interesting site where people talk about how ferrite affects their listening.
https://www.head-fi.org/threads/ferrite-cores-in-the-signal-path.137995/
https://www.head-fi.org/threads/ferrite-cores-in-the-signal-path.137995/
Are you assuming all statements need data to back them up? I'll need some data on that.
Floobydust.
There is nothing of significance in that thread.
Not sure what you mean by that. For engineers looking for immediate technical answers, you may be right. For people who would like good sound as a final result, subjective data could be of interest.
Moreover, that's how it goes sometimes in science: Observation first, technical understanding later. For example, somebody once noticed a weird hump of water moving down a river. Rather than dismiss it as useless BS and an hallucination on the part of the observer, some wiser scientists took interest in trying to figure out how the strange hump of water could happen.
It is really hard to find posts on the web for people that like the sound of ferrite.
Electrical power both AC/DC have fascinated me since my first 'experiment' as a small child. Imagine a railroad spike being put into a hot lamp socket. Experiment #1. I think that I was 3 years old.
Many years later, imagine my joy when PS Audio made a 300 watt AC regenerator! Oh boy, now I can change two or three aspects of the power. What fun. I still own one, but it is being rebuilt as we speak.
Now, as to the 'improved' sound of my equipment? That is a little more diverse upon explanation. I mean to say, it depended on the equipment connected. I believe that it also depended on the incoming AC to begin with.
I can't go far into theory or measurements, though I wish that I could. In short yes, there were some differences in some equipment, but I wouldn't go so far as to say that it was a great system improvement, since some equipment didn't like to be bothered with in the first place, and some didn't care.
Many years later, imagine my joy when PS Audio made a 300 watt AC regenerator! Oh boy, now I can change two or three aspects of the power. What fun. I still own one, but it is being rebuilt as we speak.
Now, as to the 'improved' sound of my equipment? That is a little more diverse upon explanation. I mean to say, it depended on the equipment connected. I believe that it also depended on the incoming AC to begin with.
I can't go far into theory or measurements, though I wish that I could. In short yes, there were some differences in some equipment, but I wouldn't go so far as to say that it was a great system improvement, since some equipment didn't like to be bothered with in the first place, and some didn't care.
;-)
My experience: materials we do hear. And "metal" does counter "wooden". As example.
So common wooden speakers do benefit of materials like "metal", in plugs, sockets, stands, stages, sleeves...
May be one reason of many;-)
My experience: materials we do hear. And "metal" does counter "wooden". As example.
So common wooden speakers do benefit of materials like "metal", in plugs, sockets, stands, stages, sleeves...
May be one reason of many;-)
That water hump is spilling from one thread to another. I wonder how far it will go in front of boat full of fringe theories, that Markw4 is paddling. 😉
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