Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: GLFSHNT on December 24, 2017, 12:06:45 pm
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On the 5E3 Cap 10 is a filter cap?
What does it do?
My 5E3 build has been working great since completion. I opened it up to swap out C1 and 2 to tighten up the low end.
I noticed that Cap 10 had disintegrated. Up on inspection it had been installed reverse polarity. (my bad...) I think it came apart shortly after I turned it on. I never noticed.... I have been playing the amp for a few weeks -mostly very low volume. I cannot see any issues. Coupd that be part of the low end flub?
Thanks all.
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C10 is your 1st tap filter cap, shoulda made a nice POP when it went. I would expect more hum than flab, which way did you go with C1 & 2? they are "to taste" kinda caps, I like 2-10 for C1, then C5 anywhere from 10 - 22. Speakers are a pretty good source for flab, might try a bunch n see if that helps
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That's why the amp hums so much at any volume....
C1 and and 2 are .1 right now. As this is my first build and kind of a test bed. I thought I might add a small switch on the chassis next to the output jacks that would allow me to switch between different caps on 1 and 2.
---Maybe I just have the tinker bug and feel the need to mess with it.....
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You definitely need to replace C10 to get rid of the hum.