I beg to differ. Speakers obviously become wore out after time (and I am not talking foam rot). So yes they do change their timbre over time. The question is "break in" to what? A timbre that is the listener's preference I would presume. That is a vast difference, and measured over a large amount of time for the average AV user.

I say this from a musician aspect. I had a cabinet loaded with pre-Rola Celestion greenbacks. I played through that cab pretty much 6-8 hrs a day for years. The timbre of those speakers did change over that time (as measured by IR measurements)


Mark
Pio 94,SB3,BD30,A35,Pio 48AV.Pronto 7000 controlling all. Getting ready for 22s, 150 & QS8s.