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Post by williamh on Mar 3, 2008 8:59:16 GMT -7
Ok, so for all the tubes other than the power amps tubes, I'd really love to know what the other ones apply to in the amp(which are pre-amp, which is rectifier, does one go to the reverb, etc). I'm not wanting to change out all of my tubes, and I believe I've got a microphonic one currently in my amp, and I'm trying to figure out where to look first. Thanks.
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Post by paulgiz2 on Mar 4, 2008 3:36:08 GMT -7
Tube layout info on Dr Zs website.
As far as finding a microphonic tube, take off the shields, turn on the amp and tap the tubes one by one. You'll definitely know which one is microphonic.
If that doesn't work, get a friend to help you. Find the note(s) that sound the worst and have him(her) play them over and over. Using a pot holder, one by one, hold each preamp tube and see if the ringing stops when you're stabilizing a particular tube. If so, that's the one.
P.
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