Originally Posted by aats
I'd take Klippel over audioholics
While I am sympathetic to this sentiment, there is literally nothing in the paper you linked that demonstrates that these changes are audible.
So what does that mean?
Clearly, there are small mechanical changes in suspensions as a function of use. As the Klippel paper lays out, these changes are characterized as an early phase of rapid change (e.g., something along the lines of break-in) and longer-term gradual changes (essentially, fatigue). But frankly, even based on the Klippel model, these changes even during the early period, are not particularly large and are quite rapid. For most speakers this probably isn't audible at all, and even if it is, the potentially
audible change should happen on the order of single-digit hours (though it does matter how much power is put through the speakers). Considering that most speakers are tested before they're shipped, the odds that speakers will audibly change after they're unboxed by the consumer seem quite low.
Thus, in general most people won't ever hear anything that resembles break-in. So, to a first order of approximation, it's essentially a myth. But if you're worried about it, play the speakers loud for a couple hours right after you get them, and you'll be all set.
The idea that, after that, speakers meaningfully change in the typical break-in period that most people usually talk about (e.g., a week, whatever) is just plain snake oil. As
said, it's an invention by the unscrupulous to try to get people to not return their purchases.