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Hoffman Amps Forum image Author Topic: 9 pin bias probe for EL 84`s  (Read 5765 times)

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Offline punkykatt

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9 pin bias probe for EL 84`s
« on: April 07, 2010, 08:42:41 pm »
 



I made up a couple of 9 pin bias probes just to see if could be done. I used the 9 pin socket savers from AES. You can take them apart( bolt and nut holds them together) and remove the pins.  I had to double stack them, they are a bit tall. Work great for EL84 combo amps. For heads there might not be enough clearance.  Punky
   

 
 
 SOCKET SAVER, 9 PIN MINIATURE

P-ST9-900

9 pin miniature socket saver.

RoHS Compliant 




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Offline Maschinenmann

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Re: 9 pin bias probe for EL 84`s
« Reply #1 on: April 08, 2010, 05:58:04 pm »
Nice! What was your total investment?

Offline punkykatt

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Re: 9 pin bias probe for EL 84`s
« Reply #2 on: April 08, 2010, 09:16:55 pm »
Probably $20 for the both. For wire I used some small speaker wire I had sitting around, the banana plugs I got at RS years ago.  Fun little project for a rainy afternoon.
Punky

Offline HotBluePlates

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Re: 9 pin bias probe for EL 84`s
« Reply #3 on: April 10, 2010, 08:09:05 am »
Very nice work!!

Offline punkykatt

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Re: 9 pin bias probe for EL 84`s
« Reply #4 on: April 10, 2010, 09:42:11 am »
Thank you.

 


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