Speaker Break-In - What Physically Changes During Break-In To Enable Better Sound?


All,

Have seen people and manufacturers mention that speakers need to be played for a while to break-in / open up.  Would like to know what physically happens to the speaker components to enable better sound during the break-in period.  Please share your wisdom on this.

Thanks!
michiganbuckeye
Post removed 
I’m inclined to believe that the thing that’s changing is ourselves i.e. we are becoming accustomed to the sound of a new and unfamiliar device, rather than anything "burning in", or whatever.
@french_fries 

that's more likely your electronics warming up after this 20/30 minutes period and it's actually quite normal. 
@marqmike 

it sure does sound better after warming up... some systems take even more than that to reach optimal working temperature.