Boo .. Long exposure to extreme temps is a definite no-no ... I am not sure if my kn6 came with such a warning, but I'm almost positive the HD did .... I remember when I played Cordovox (anyone else remember those?), if I left the main unit in the car overnight for the next gig, when I plugged it in ALL the notes would sound and I would have to take a hair blower to the panel to dry it out ...
t.