Speaker Break In...? Or listener “Break In”?

Oh, I dunno about all that. Depends on HOW the speakers - or anything - are broken in. Some methods are without any doubt more effective than others. We’ve known that for a very long time. I’m referring to burn-in tracks on Test CDs continuously as opposed to just playing music a few hours a day. The argument can be made the speakers will never completely break in without heroic efforts. 🏋🏻‍♂️

Here is some more evidence supporting burn in.http://http//www.gr-research.com/burnin.htm and
http://www.gr-research.com/myths.htm

I can't make that first link work for some reason. You can copy and paste it. Interesting read:  gr-research.com/burnin.htm

Break-in? The more I listen to a speaker the worse it sounds.