Power Amp warm-up time

  • So on Friday I played a show with my band, and my buddy who drove my gear to the gig had left my Kemper Power rack (In a Rackcase) in his car overnight. It's winter where I live and it was snowing so naturally, it got really cold. So he gets there, I set my stuff up, everything as usual, I turn the master up and there's no sound. I fiddled around for about 10 minutes, redoing the whole setup and panicking until slowly the sound started coming in. After that everything was fine. I'm still a bit worried though, is it safe to let your Kemper gets this cold? And have you ever experienced the Kemper having to warm-up for this long?

  • Haven't come across this as I never leave gear in my car overnight.

    The manual shows these figures:


    Environmental Requirements

    Operating temperature: 10° to 35° C (50° to 95° F)

    Non-operating temperature: −20° to 47° C (−4° to 116° F)

    Relative humidity: 5% to 95% non-condensing

    Maximum altitude: 3000 m (10,000 feet)


    It reads oddly as the non operating temp. range includes the operating temp. range.

    I'm guessing they mean (no op temp) <-20 and >47