Originally Posted by MAYAman
^^^Yeah that is probably what I was more impressed with than the sound. I couldn't believe how cool they were, including the box itself. After I popped the factory box back on and drove for about 20 min I did the same test and you could not touch it, it was so hot, including the box. It basically became an oven which the Renntech did not.
Yes, it's the same reason why aluminum foil inside a 400 degree oven does not feel hot at all to the touch