OTL Asylum: tubes 6082 Raytheon by sprussog

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tubes 6082 Raytheon

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sprussog

Hello dear people, I built the Macovski OTL. The power supply is more modern and I built a reliable speaker protection. A small hum is annoying me, for which I cannot find the cause. For all tubes i have a DC heather.
The preamp power supply is separate from the end stage power supply. I installed another preamp stage ( JJ828 ), the hum became less. Is it the many different tensions in the preamp stage that cause this?
Lots of 6082 tubes have been broken lately. They are now 53 years old, NOS, in best quality. Thats normal for this Raytheon tubes? Sometimes I can see some rust on the bases. Best greetings from Steffen

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Topic - tubes 6082 Raytheon - sprussog 11:16:08 05/8/20 ( 10)

RE: tubes 6082 Raytheon - cpotl 13:18:39 05/13/20 ( 0)
What is the value of the current limiting resistors in the output section? - Ralph 11:54:58 05/13/20 ( 7)
- If it lacks current limiting resistors in the output section, power tubes will fail easily. - Ralph 09:46:57 05/14/20 ( 6)
  - Ralph, What about my 7241s? - Lew 18:36:04 05/23/20 ( 5)
    - RE: Ralph, What about my 7241s? - pictureguy 18:55:56 05/23/20 ( 4)
      - RE: Ralph, What about my 7241s? - Lew 09:06:32 05/24/20 ( 3)
        
        RE: Ralph, What about my 7241s? - pictureguy 16:50:50 05/24/20 ( 2)
        
        RE: Ralph, What about my 7241s? - Lew 07:29:21 05/25/20 ( 1)
        
        RE: Ralph, What about my 7241s? - pictureguy 09:57:08 05/25/20 ( 0)
RE: tubes 6082 Raytheon - djn 22:36:37 05/12/20 ( 0)