Yup, exactly my thought as well. Does the OP live in a fairly humid environment? Is it humid in the vehicle? TC subs don't simply rip apart like that by accident.oh im sure of that, its just that this sort of thing happening twice makes me believe there is some other physics at work, otherwise id of seen more of this before.
If you want to, AIM me and we can talk about it....maybe I can help out //content.invisioncic.com/y282845/emoticons/naughty.gif.94359f346c0f1259df8038d60b41863e.gif Id like to see pics of the box too if possible.