Drivers and complete loudspeakers can also have warm-up changes. Do a long set of tests and then measurements, than let the speaker rest for a day and the first measurements may be different.TS parameters on speakers driver change due to break in of the surround. Easily measured, doesn't happen twice.
So, instead of "burn in" or "break in", we call this "warm in"? : )Drivers and complete loudspeakers can also have warm-up changes. Do a long set of tests and then measurements, than let the speaker rest for a day and the first measurements may be different.
Unless you're Microsoft...Burning in for infant mortality is a different thing, and most manufacturers including us do this. Expecting the end customer to do this is insanity.
It largely depends on type of electronics. Certain ones have break-in period, others don't. One of component that needs break-in will be capacitors., esp. electrolytic capacitors. When you run your capacitor, chemical reaction occurs between the electrolyte and the foil (usually aluminum). A thin layer of oxide will also form on the foil. Takes time to happen.
How much time does it take, and how much change in the capacitor occurs?
Nothing to do with audio, but burn-in is done for more than just audio. ITs also done for overclocking of processors. ITs very common for overclockers to "break-in" their processors in order to achieve slightly higher overclocking results.
Break-in is also down for mechanical parts, common for things like engines, transmission etc.... Formula 1 engines and transmission goes through extremely comprehension break-in before its being used in races.
Never in 25 years have I heard this to be necessary. Break-in or burn-in to test for faulty parts or components perhaps, but not to increase performance.ITs also done for overclocking of processors. ITs very common for overclockers to "break-in" their processors in order to achieve slightly higher overclocking results..
Of course some manufacturers will say that as it is de rigueur in audiophool circles to discuss "burn in". It is a marketing ploy like pricing equipment higher then might otherwise be justified because "cost equals quality". IF "burn in" for capacitors is actually doing something, then the specs are changing and would be completely measurable. But that would also risk putting the cap outside the required specifications for what it is being used. If you can't depend on a capacitor in a crossover measuring consistently over a reasonable (years) period of time, then the crossover will no longer meet the designer's intent and the speaker will not perform as designed. IF they're making components that actually do change with "burn in", then I wouldn't want them in anything I buy.https://www.diyaudio.com/forums/parts/81355-capacitor-burn-break.html
I can't verify his results as I do not have an oscilloscope. But capacitors manufacturers themselves say a burn-in period is required. Some people might have heard of brands like rubycon, nichicon and Elna.
Of course some manufacturers will say that as it is de rigueur in audiophool circles to discuss "burn in". It is a marketing ploy like pricing equipment higher then might otherwise be justified because "cost equals quality". IF "burn in" for capacitors is actually doing something, then the specs are changing and would be completely measurable. But that would also risk putting the cap outside the required specifications for what it is being used. If you can't depend on a capacitor in a crossover measuring consistently over a reasonable (years) period of time, then the crossover will no longer meet the designer's intent and the speaker will not perform as designed. IF they're making components that actually do change with "burn in", then I wouldn't want them in anything I buy.
I don't think we can have any meaningful discussions on this. I don't think you have an understand of chemical changes of an electrolytic capacitor during this "burn-in", neither do you seems to understand what is endurance and dissipation factor. I would say its better if you go find out more about all these information first, else its just a waste of each other's time. For now, I will just add you to my ignore list.