Mark, by reason of your new boardname, you're entitled to a second welcome. Welcome, Mark. However, no sooner did you get rid of that highly offensive former title, than you try to make more trouble over speaker break-in!(just kidding). Analogies might make those changes seem plausible, but in reality they don't appear to exist. The slight measurable changes occurring in a relatively brief time after a speaker is first played wouldn't be of audible significance. Probably the most recent published study of this appeared in
Audioholics and demonstrated that the slight permanent changes wouldn't be audible and would likely have happened at the factory anyway.
