I know sometimes I used extreme examples, but only to get my point across. If ice melts at 33 degree's then at 100 metal molecules would most likely be expanding as well. I'm sure we've all heard our aluminum engines cooling and "crackling" while they contract. But the main point I'm really trying to get across, is that anything mechanical does change it's properties from a "new" state to a "used" or broken in state, and a speaker is definitely a mechanical device. Even electronic components are "broke" or "burned" in and I can't remember the last time I seen a capacitor move other than explode...lol.
