This is probably a weird question. I have an old pair of CMT-340SE's (and a center) that I'm thinking about using in my barn.

These were my original theater speakers, and was using them in my family room TV viewing previously (replaced these with Sierra II's in my theater), but we just moved, and I don't have anywhere to use them in the house.

I could use them in my barn, but I'm concerned about operating temperatures? I don't want to damage them. The barn is insulated and has HVAC, but will primarily only run it when I know I'll be in there for an extended period of time. Midwest USA, so I'd guess 20F - 100F.