|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
98.114.239.169
Is there any way to visually identity a TFK 12ax7 vs 12au7 ribbed plate? I have a tube with absolutely zero label left except a tiny part of the TFK diamond label so I not sure what this tube is. I only have a Orange tube tester which isn't of much help but the tube tested "ok" as a 12ax7 by that tester. I only have another TFK ECC83 smooth plate to compare with here at home. So any help I'd appreciate
Follow Ups:
It worked on some of my no markings tubes. The effect lasts only a few seconds so you have to be quick!
Use the 12AU7 tube test settings on your tester. If the tubes goes all the way up the scale and almost pegs the needle,rest assured it is a 12AX7. If it tests normal,it's a 12AU7.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
....the humidity of your breath will often show where the paint has shed off and will illuminate the original lettering. Or not.
The grid wire is smaller on the 12ax7.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: