nuked speakers any one?

[solarsvx]

my back deck speakers wich are infinity hasent been working lately. i have upgraded all the speakers and new amps and a sub. well the other day i go look at the speaker and come to find out they are not there !!!!!

the plastic completely disintegrated . the speaker is ther eand the metal but all the the plastic is melted and fell off of it, its the weirdest damm thing!!! there abought a year old and spent 150.00 $ for the rear 6+9 any one else have or heard of this issues, i didnt relize the heat was so bad back there, and the windows are tinted.