Do you find that a half an hour of play time would be less damaging to your
speaker surrounds in cold weather then an hour or more of playing time? I'm
not sure were you're going with this?

In article , "Mark Zarella"
wrote:

Most car rides are under half an hour. I think it's a bit silly to refrain
from using your car stereo in the wintertime.

(I live in the northeast and I've never ever run into this problem)