How long should I allow moving lights to cool down, before shutting off their power? I was taught (by someone who honestly wouldn't know) that a minute or two is all that is necessary. We use Coemar ProSpot 250 LXs and Martin MAC 600s. I read both manuals just now, and saw no reference to a cool down period. I think I read somewhere here on CB that 20 minutes is required. Both manuals recommend 10 to 15 minutes minimum cool down before changing a lamp.