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Old 15th April 2012, 11:54 AM   #1
diyAudio Member
Join Date: May 2010
Default 7189a socket rewiring

Hi. I have an old guitar amp that uses 7189a.

I have bought russian two 6p14p-ev tubes that Can take the higher plate voltage, like the 7189a's can

But it seems the 7189a tubes have a different pinout than Your regular el84-kinda-tube

How Can i rewire the sockets to make my 6p14p-ev tubes work?
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Old 15th April 2012, 05:13 PM   #2
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Join Date: Nov 2009
Location: Cortez, CO
Remove any wires from pin 1 and put on pin 2 (control grid).
Remove any wires from pin 6 and put on pin 9 (screen grid).
If there are no wires on pin 1 and 6 you're good to go.
When rewired amp still will take both kinds of tubes.
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Old 15th April 2012, 06:39 PM   #3
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Join Date: May 2010
Thanks man... IŽll give it a try....
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