Ok. I've had a 12" powered sub for 3 years now, and ever since the day that I receieved it, I have left it on "on" every single minute of the day. I have never turned it off. It has an auto switch, but I don't use it, and it has never hurt the sub. I have never had any type of air conditioner, or cooler to cool the room in the summer time, and the sub has gotten so hot, that if you touch it, it will blister your fingers. Anyway, I still don't have any type of cooling system for the summer, and I am getting an SVS 16-46 PCi very soon, and I was wondering, if I could do the same thing with the SVS. Are they more sensitive? I don't want to ruin a very good sub. Do any of you SVS owners out there leave it on, 24 hours a day, 7 days a week?