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In Reply to: RE: Fi 2A3 mono amps v. this (see photo) posted by soulvibrations on February 22, 2015 at 11:07:33
I prefer the hum pot mount differently so that I can access it without flipping the amp over.
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My own preferred technique, for now, is no hum pot.Lately, I have been experimenting with "balanced" Ef XFR windings for DHTs, (which we've never had), balanced as to DCR, Inductance, and Capacitance. Its a suggestion I was given from Dennis Fraker.
JM
Edits: 02/25/15
I'm sure it's a lot of fun to reject a high percentage of your 2A3's because they will hum without a hum pot.
Hopefully you've found a vendor that doesn't mind all the returns.
CB,I am a big boy now, so seldom do I return tubes to my vendor.
I just buy enough, say ten at a time, do my ear finger-tapping tests to get a pair or two, maybe test them for hum levels, and sell-off all the ones I don't want on eBay, to the many very wise people who use hum pots in their amps. Everyone is happy that way, and no one gets hurt.
Jeff Medwin
Edits: 02/25/15 02/25/15
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