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| | |-+  Pin Voltages per Nik + Bias Calculator for Tube swapping		 « previous next »
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Author Topic: Pin Voltages per Nik + Bias Calculator for Tube swapping  (Read 4338 times)
mx
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« on: December 10, 2008, 08:30:31 PM »
Hello,

The attachment on pin voltages is a reference for builders and trouble-shooting.  I haven't found this info elsewhere on the site when I needed it so here you go...

The link below is from Weber Speakers and great for determining bias voltages when changing tubes.  I noticed a big voltage drop when I swapped out the JJ's for some GT 6L6GE "clear tops" which required a big change in bias setting.

http://www.webervst.com/tubes1/calcbias.htm

Matt
* OTS Pin Voltages.pdf (6.96 KB - downloaded 487 times.)
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mcinku
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« Reply #1 on: December 11, 2008, 08:48:18 AM »
My plate voltages are slightly higher than yours...
6L6      454V
V1a      195V
V1b      204V
V2a      210V
V2b      213V
PIa      318V
PIb      301V

I use Tung-Sols all over
 Wink
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