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Hoffman Amplifiers > Amp Stuff > Tube Amp Building - Tweaks - Repairs (Moderators: Geezer, tubenit, PRR, sluckey) > THd Yellow Jackets schematic
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jgriff123
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« on: February 10, 2011, 06:38:05 am »
Hey guys, its been awhile since I've been on here.  Does anyone have a schematic laying around for the thd yellow jackets?  Thanks ahead of time. JG
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jgriff123
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« Reply #1 on: February 10, 2011, 08:41:42 am »
basically what im trying to do is run el84s in a dlitethat I built.  I would like to be able to run either 6l6's or 84's.  I was thinking about putting in a couple 9 pins sockets so I can run eithewr tubes.(not at the same time)  Any suggestions would be great.  JG
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FYL
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« Reply #2 on: February 10, 2011, 10:06:11 am »
The schemo below was posted here a while ago...

* Yellow Jacket 100.Jpg (90.52 KB, 850x1170 - viewed 401 times.)
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kagliostro
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« Reply #3 on: February 10, 2011, 05:13:57 pm »
Give a look here

Kagliostro
* EL34 to EL84s.pdf (125.26 KB - downloaded 232 times.)
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jgriff123
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« Reply #4 on: February 10, 2011, 06:11:14 pm »
thanks guys, that is exactly what I needed!  JG
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jgriff123
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« Reply #5 on: February 12, 2011, 05:08:34 pm »
one more question.  Why do they use zenor diodes and could you use regular diodes instead?  JG
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FYL
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« Reply #6 on: February 12, 2011, 07:20:32 pm »
The Zener string drops B+ to levels compatible with EL84s.
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