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Forum: Tubes (Valves)

  1. Mod'ing a tube circuit (from early 60's stereo turntable)

    Started by TubeNoob, 10-17-2016 01:06 PM
    3 Pages
    1 2 3
    • Replies: 102
    • Views: 6,413
    10-17-2018, 08:03 PM Go to last post
  2. JJ EL34 II

    Started by Mick Bailey, 05-13-2018 06:52 PM
    • Replies: 7
    • Views: 1,008
    10-02-2018, 09:14 PM Go to last post
    • Replies: 8
    • Views: 1,466
    08-22-2018, 05:49 AM Go to last post
  3. Visual signs of a bad tube?

    Started by Axtman, 08-12-2018 03:09 AM
    • Replies: 2
    • Views: 485
    08-15-2018, 12:06 AM Go to last post
  4. Tube rattle?

    Started by tubedood, 08-06-2018 11:21 PM
    • Replies: 3
    • Views: 288
    08-07-2018, 04:49 AM Go to last post
    • Replies: 9
    • Views: 631
    08-03-2018, 06:53 PM Go to last post
  5. 6SQ7? In a Gibson GA-20...

    Started by Justin Thomas, 10-03-2017 10:38 PM
    • Replies: 3
    • Views: 740
    08-02-2018, 01:01 AM Go to last post
  6. 6L6GC or 5881?

    Started by Randall, 07-02-2018 03:27 AM
    • Replies: 15
    • Views: 858
    07-22-2018, 02:20 PM Go to last post
  7. telling unmarked preamp tubes apart

    Started by Randall, 06-30-2018 06:31 PM
    • Replies: 7
    • Views: 535
    07-01-2018, 05:34 PM Go to last post
  8. Original Sovtek 5881 (coin/wafer based)

    Started by Gtr0, 06-26-2018 02:23 PM
    • Replies: 5
    • Views: 465
    06-27-2018, 12:14 PM Go to last post
  9. KT55 Tubes

    Started by kpsta, 06-07-2018 08:23 PM
    • Replies: 1
    • Views: 534
    06-08-2018, 12:08 AM Go to last post
  10. Sovtek 6SL7

    Started by Mick Bailey, 03-19-2018 01:47 PM
    • Replies: 2
    • Views: 834
    04-01-2018, 09:24 AM Go to last post
  11. Modern 6550?

    Started by Randall, 03-22-2018 09:05 PM
    • Replies: 4
    • Views: 661
    03-23-2018, 05:49 PM Go to last post
  12. RCA JAN 83 rectifier tube flakes

    Started by Randall, 02-22-2018 06:58 AM
    • Replies: 9
    • Views: 945
    02-22-2018, 10:46 PM Go to last post
  13. Modern 5y3s

    Started by bluzmn, 12-23-2016 05:05 PM
    • Replies: 9
    • Views: 1,141
    02-03-2018, 09:07 PM Go to last post
  14. JJ6V6

    Started by uneumann, 12-30-2017 09:52 PM
    • Replies: 31
    • Views: 2,018
    01-10-2018, 06:36 AM Go to last post
  15. New TAD tube

    Started by nosaj, 01-09-2018 12:13 AM
    • Replies: 13
    • Views: 799
    01-09-2018, 11:53 PM Go to last post
  16. Getter flash spots changing over time

    Started by KRKozBassman, 11-29-2017 04:05 PM
    • Replies: 4
    • Views: 789
    12-29-2017, 05:34 AM Go to last post
  17. Sovtek EL84m tests poor in Orange valve tester??

    Started by 1ampman, 09-19-2017 12:13 AM
    • Replies: 9
    • Views: 1,161
    10-20-2017, 01:45 AM Go to last post
  18. 6ak6-tone-experience?

    Started by Chuck H, 10-06-2017 02:31 AM
    2 Pages
    1 2
    • Replies: 52
    • Views: 2,028
    10-16-2017, 01:59 AM Go to last post
  19. Marshall Branded Tubes

    Started by LesterPTelestrat, 10-09-2017 09:01 PM
    • Replies: 8
    • Views: 1,367
    10-12-2017, 06:55 PM Go to last post
  20. Ultra Linear Tap percentage

    Started by mpegjohn, 10-05-2017 01:11 PM
    • Replies: 2
    • Views: 609
    10-05-2017, 02:24 PM Go to last post
  21. Is a halo the sign of a bad tube?

    Started by Axtman, 09-04-2017 07:19 PM
    • Replies: 2
    • Views: 839
    09-05-2017, 11:26 AM Go to last post
    • Replies: 7
    • Views: 1,040
    08-10-2017, 07:24 AM Go to last post
    • Replies: 4
    • Views: 725
    08-04-2017, 10:14 AM Go to last post
  22. Anybody looked at tube perveance values?

    Started by Old Tele man, 12-03-2013 09:50 PM
    • Replies: 15
    • Views: 2,167
    07-27-2017, 02:39 AM Go to last post
    • Replies: 17
    • Views: 2,388
    07-20-2017, 01:52 AM Go to last post
  23. Tube ID?

    Started by Axtman, 07-10-2017 04:52 AM
    • Replies: 8
    • Views: 731
    07-11-2017, 10:50 PM Go to last post

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