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In Reply to: Fed up with old stock 12AX7 RCAs dying or becoming microphonic! posted by Paul Kehayas on December 20, 2016 at 13:11:36:
Some coupling caps maybe passing too much DC. That'll make tubes get noisy, go microphonic, and die more easily.
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Follow Ups
- Have you had those units checked recently? - FenderLover 12/20/1614:15:41 12/20/16 (3)
- RE: Have you had those units checked recently? - Paul Kehayas 14:22:59 12/20/16 (2)
- I've pulled a LOT of old RCA 12AX7 and 7025 - FenderLover 06:51:13 12/21/16 (1)
- RE: I've pulled a LOT of old RCA 12AX7 and 7025 - Paul Kehayas 07:04:01 12/21/16 (0)