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In Reply to: Have you tried a know, good set of EL84? posted by FenderLover on July 13, 2016 at 23:48:34:
These reflektor tubes are new and test at 95 to 105% of specified plate current on eico 667 tester set for 7189. The thing came with JJ el84 which is not rated for the voltages in this amp. It came to me with a blown JJ rectifier. The JJs are still OK having not been in there very long but I am not leaving them in there for very long. The current and bias voltage relationships I have described for the reflektors apply to the JJs as well.
As to another suggestion that separate resistors be in place for all four tubes I completely agree and might end up doing that. Thank you all for your interest in this project.
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Follow Ups
- RE: Have you tried a know, good set of EL84? - thermionic emitter 09:12:34 07/14/16 (6)
- RE: Have you tried a know, good set of EL84? - Eli Duttman 10:41:06 07/14/16 (5)
- RE: Have you tried a know, good set of EL84? - Jim McShane 11:19:22 07/14/16 (4)
- Server Not Found - Triode_Kingdom 12:01:37 07/14/16 (3)
- Got it - Nice Article Jim! (nt) - Triode_Kingdom 13:27:12 07/15/16 (0)
- RE: Server Not Found - Jim McShane 17:57:13 07/14/16 (0)
- RE: Server Not Found - Eli Duttman 12:52:10 07/14/16 (0)