Speaker break in?

Agree with the above about mechanical break-in for speakers (true of cartridges as well), not just electrical. I have heard this quite clearly when replacing drivers, not only in my hifi speakers, but also in guitar amps. I'm sure the internal cabling and crossover bits break-in too, just like any other electrical component, but the mechanical factor adds yet another dimension that can make the difference even more obvious. New drivers that have not been run in can sound too restricted both dynamically and in power bandwidth, often displaying a spotlit frequency range relative to the whole, and/or excessive texture that smooths out eventually. This usually results in sound that is less transparent, smaller in soundstage, and is edgier and reticent-sounding compared to the fully broken-in version of the same. My assumption has always been that comfortably loud playback levels must speed the break-in process along faster than quiet levels will. BTW, new stringed instruments which produce their sound via a vibrating top soundboard also undergo a lengthy break-in improvement as they are played, following along basically the same lines.