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In Reply to: Re: Can a tube become magnetic with use? posted by Michael Samra on April 28, 2007 at 23:38:40:
in my experimentation, and I also tried passing a hand held degausser over the tubes in circuit, degaussing a tube greatly increases the top end. Usually in addition to the cathodes you mentioned, but the plates are often nickel and thus susceptible to magnetism.
I used a 2800 gauss unit, but passing it over some power tubes was a bit scary as I could hear the grids rattling. While the effect was quite nice, it was very transitory, and within a minute period I could hear the top end dropping back to normal. I've never tried a more powerful degausser.
Stu
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Follow Ups
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