Searching for an opinion - FEDEX delivered my new M80's Friday afternoon and while I watched from my front door the guy tried to stuff all the boxes on one cart and one of the M80's took a "header".. It landed pretty square on either the front or back in the street. Once inside I checked for damage. The outer boxes were trashed - ripped all over - looks like they slid all the way to Texas (Note very thin outer cardboard for a speaker that heavy - the "handles were useless") Perhaps that is why FEDEX man was mad... Inside boxes were much better and not broken.. The one that fell had pulverized the packing foam on one side (certainly can't use it again).. I was pleased that I could not find anything visably wrong.. Set everything up and sounds sweet ! So the question is - Should I worry about the insides ? Nothing seems to rattle and all the drivers work - Can drivers get "out of alignment" ? I expect to keep these big-boys for a long time...