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Questions about tubes and gear that glows. FAQ

RE: Sylvania/Philips 5AR4

On the VTA amp pages, you might find the link to the 'diode fix' for thiese.
A 1N4007 on each leg works. Problem might be that when these were supposedly built? House current was closer to 110 than todays near-120. That puts higher than expected voltage TO the tube which may be the source of hte arcing?

Check out hte diode fix.
Too much is never enough


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