Low vs High aka Series vs Parallel Filaments - Page 2 - diyAudio
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Old 22nd April 2007, 07:05 PM   #11
diyAudio Member
 
Join Date: Jun 2004
Location: Indiana
I have read this thread with interest as I have been unclear on how a 12v tube like the 12AU7 is used with 6v fil trans. Let me know if I have this right.

You parallel the two heaters by tying the two ends (pins 4 and 5) together and putting the 6v between the center tap (pin 9) and the ends that are tied together. Is that right?

mike
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