JJ 5y3

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JJ 5y3

Postby Jimmy-X on Tue Mar 13, 2012 6:08 am

HaAs anyone used one of these?

Any excitement or experiences?

Your readings?
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Re: JJ 5y3

Postby Baron Von Machinenmann on Tue Mar 13, 2012 10:47 am

"Iffy" quality control, filament rattle, there is just no good reason to use these when there are literally tons of NOS or good used available through dealers,ebay or hamfests IMHO. :cheers:
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Re: JJ 5y3

Postby menschmaschine on Tue Mar 13, 2012 1:38 pm

I just overhauled a '51 Silvertone 1344 using one of these. No complaints so far (no measurements though), but this is anecdotal... I replaced just about everything in the circuit except the speaker and transformers. So, using the JJ 5Y3 was a very small part of it. But the amp went from sounding like an out-of-range AM station to seemingly factory fresh clarity.
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Re: JJ 5y3

Postby PeterS on Tue Mar 13, 2012 8:27 pm

The issue isn;t that they don't sound good, it's reliability compared to old brands. I use used USA rectifier tubes of unknown history and the last time one of them failed was 1980.
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