edwardsean
Headphoneus Supremus
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It is called “Drift Parameters”, and any electrical engineering designers should have known it as it is a very basic knowledges. These parameters changes and drift away upon operational circumstances. Over a period of time, these parameters with a constant applicable circumstances becomes more stabilized due to the tolerances and the whole operation Of the systems including Temperature coefficient, ESR, DF....etc...
These Operational drift parameters are different from “Degradations overtime” or “shelves life degradations”. It is only found by applying a constant voltages in and out at a constant ambient temperature over a long period of time. Until the present or modern date that it became so pronounced with better high precision tolerances components, that it had to be disclosed in data sheets
For example this one from Vishay and pay attention at this.
Once again, it is from within Basic Component engineering designs, and if any engineers who don’t acknowledges....is likely a low grade engineers or the know nothing...because they can’t even read data sheets....unless “denying the facts” for business/financial purposes
Can you hear the differences ? That is out of the questions
Even Sony have to published it so. However, not all people can comprehend the Facts, and accept the facts, or both
Right, that gives a really helpful frame on what's generally going on during certain aspects of burn in, but what exactly accounts for this drift effect?
I'm sure you have "a few" ideas (grin)!
I think you may have misunderstood what I was getting at. I am referencing some of today's best audio engineers. They assume what you are describing. They're on "our side" (grin). They believe in burn in. What I wrote was that they don't claim to–"fully"–understand what goes on during burn in. There is debate among world class engineers as to what precisely is going on to cause parameters to drift, and why/how that can improve sound.
There is large scale agreement that caps and dielectrics need to form, but for e.g., some theorize about the directional alignment of impurities in the conductor metal that improve over use. Others who believe in burn in, dispute this and think it has to do with various other electrochemical reactions over time.
A lifetime of engineering experience in these guys has grown a wealth of scientific understanding, but also a sense of how much there is always more to understand. They measure and benchmark and produce data sheets, but they also listen.
They don't "deny the facts" and they don't deny their ears.
I'm encouraging us to do the same. For those that don't believe in burn in, my hope is that they can be humble about what they know, and don't know, about the science, and listen with an open mind. I think you would agree.
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