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    What are the signs of tube preamp overheating?

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    Sprags

    Posts : 123
    Join date : 2013-02-27

    What are the signs of tube preamp overheating?

    Post by Sprags on Mon May 27, 2013 6:17 pm

    I have a tube preamp I didn't build. The cover it came with did not have any vents and I was concerned about overheating so I got another cover that has slots on the side for venting. After a while the cover really was quite warm...not too warm to touch but warmer that I thought it should be.

    I could have sworn I heard the music I was listening too becoming distorted. Is this a characteristic of an overheated tube preamp or amp?

    I took the cover off, let it cool down and everything sounds fine...even after listening for 4 hours.

    I'm thinking I should probably add more slots or holes to the cover on the top.

    corndog71

    Posts : 451
    Join date : 2013-03-19
    Location : It can get windy here

    Re: What are the signs of tube preamp overheating?

    Post by corndog71 on Tue May 28, 2013 10:08 am

    It's in the nature of tube gear to get hot. Tube amps in particular can get very hot. Tube preamps too will get warm under normal conditions. So long as you're not keeping them inside an enclosed cabinet they should be fine.

    j beede

    Posts : 328
    Join date : 2011-02-07
    Location : California

    Re: What are the signs of tube preamp overheating?

    Post by j beede on Thu May 30, 2013 1:46 am

    My PAS2 and Counterpoint SA-1000 preamps run cool. It would be hard to tell if they are on or off purely from the cover temperature. What tube types are in this hot preamp?

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