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In Reply to: RE: Tube Socket Reliability posted by Victor Khomenko on August 14, 2014 at 15:30:29
Isn't the fork style tough on the pins, gouging into them? Photo here.
Follow Ups:
Looks Chinese sourced. Pretty but crappy metal work n loses tension quickly.
I would think the gouging insures a good contact?
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
Well, yes, I would think so. But, what is the base metal of the tube pins? Could it promote corrosion of the tube pins where they're gouged?
I looked into the Azuma sockets a while back.
The only available info on the metal was gold plating, so I assumed the
base metal is MM (mystery metal).
I went with Belton sockets and never looked back.
Yes, maybe if the gouge is that deep.
How long are your output tubes going to last anyway?
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
I was wondering, if the pins corrode due to the gouging, it might constitute another kind of contact problem during the useable lifetime of the tube, no? Kicking some thoughts around.
In my DIY 300b mono block amplifiers I have old school, USA made, fork type sockets for the rectifier tubes and there is no gouging that has reached the base metal and no corrosion visible.
These amps have been around for....I do know...maybe 10 years.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
Plus I don't like the gold.
Victor, what kind of issues have you experienced with the gold plating?
Thanks.
Peter
In connectors gold should be used only with gold. Using a gold-tin pair creates very bad corrosion. You are far better off using tin to tin. This gold plating is just for looks.
Interesting, thank you. So, do I correctly understand that the pins on most octal-base tubes are tin plated?I found the following related document.
Edits: 08/16/14 08/16/14
Point #7 specifically talks about it.
The high-end audio obsession with gold is nothing but silly. It looks good... that's about it.
As far as I know, most octal tube pins are indeed tin plated.
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