Tubes Asylum

RE: Runaway 7581A

66.32.82.115

In Reply to: RE: Runaway 7581A posted by FenderLover on July 03, 2009 at 05:38:01

I will certainly check the resistors on the sockets. I have seen them burned completely open on other Fender amps.

What I think I'll do is offer to sell my friend the pair of used/good GE 6L6GCs I have. They match well, and look *exactly* the same as some GE 7581As on eBay at the moment. They also showed the least sign of even incipient grid emission of any pair of tubes I tried in the amp. I'll let him play the amp and see if he likes them. I'm not a guitar player myself, and I have no amps that use a pair of 6L6s. The Leslie amps I have require a matched set of four. I have two other GE 6L6GCs, but one of them is extremely microphonic, as I found when I installed them in the Leslie. It set up an interesting howl.

David

Follow Ups:

I usually change those resistors - FenderLover 16:05:24 07/03/09 (3)
- pink ceramic based STR-415 (Sylvania specials) - FenderLover 04:21:20 07/04/09 (2)
  - RE: pink ceramic based STR-415 (Sylvania specials) - Thermionic27609 07:16:40 07/07/09 (1)
    - Plate voltages - FenderLover 04:52:28 07/10/09 (0)

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