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Forum: Theory & Design

  1. 6bm8 Clipping question

    Started by Tonewood, 06-13-2018 07:05 AM
    • Replies: 18
    • Views: 426
    06-19-2018, 11:34 PM Go to last post
  2. Triode cascode compressor anyone?

    Started by Roberto, 06-18-2018 02:55 PM
    • Replies: 6
    • Views: 193
    06-19-2018, 07:37 AM Go to last post
  3. R3000 Diodes, output tube plate to ground.

    Started by Gtr0, 06-05-2018 07:28 AM
    2 Pages
    1 2
    • Replies: 39
    • Views: 962
    06-17-2018, 05:22 PM Go to last post
  4. JTM 45 negative feedback with Mercury 'Radiospares Deluxe' OT

    Started by mikepukmel, 05-20-2018 07:45 PM
    2 Pages
    1 2
    • Replies: 64
    • Views: 1,365
    06-16-2018, 12:34 AM Go to last post
  5. odd screen current resistor question

    Started by Randall, 06-13-2018 09:29 PM
    • Replies: 16
    • Views: 307
    06-15-2018, 12:05 AM Go to last post
  6. cathode cap question

    Started by Randall, 06-12-2018 06:39 PM
    • Replies: 6
    • Views: 233
    06-14-2018, 01:24 AM Go to last post
  7. fender pro (pro tube) reverb

    Started by onetracker, 02-03-2013 01:42 PM
    • Replies: 9
    • Views: 2,500
    06-12-2018, 06:05 PM Go to last post
    • Replies: 6
    • Views: 383
    06-11-2018, 08:47 PM Go to last post
    • Replies: 97
    • Views: 2,440
    06-11-2018, 03:52 AM Go to last post
    • Replies: 12
    • Views: 529
    06-10-2018, 07:12 PM Go to last post
  8. PI capacitor question

    Started by Randall, 06-08-2018 04:43 AM
    • Replies: 5
    • Views: 232
    06-08-2018, 12:45 PM Go to last post
  9. Future of Tubes is TODAY

    Started by J M Fahey, 01-30-2015 11:37 AM
    3 Pages
    1 2 3
    • Replies: 103
    • Views: 5,842
    06-08-2018, 11:03 AM Go to last post
  10. Tweed Twin grid resistor question

    Started by Randall, 06-07-2018 10:22 PM
    • Replies: 1
    • Views: 157
    06-07-2018, 10:46 PM Go to last post
  11. Marshall 18W - Hum Master Pot

    Started by blackwhaleamp, 05-30-2018 08:32 AM
    • Replies: 6
    • Views: 357
    06-03-2018, 06:21 PM Go to last post
  12. Use an OT for higher Z

    Started by uneumann, 06-02-2018 05:17 PM
    • Replies: 7
    • Views: 339
    06-02-2018, 09:05 PM Go to last post
  13. Cathodyne PI Gain <1 On Load Line Chart?

    Started by robrob, 06-01-2018 06:30 PM
    cathodyne, gain, inverter, phase
    • Replies: 4
    • Views: 354
    06-01-2018, 09:22 PM Go to last post
  14. Power supply question

    Started by E biddy, 05-30-2018 10:08 PM
    • Replies: 12
    • Views: 445
    06-01-2018, 01:44 AM Go to last post
  15. Switching scheme

    Started by hylaphone, 05-29-2018 06:29 PM
    • Replies: 9
    • Views: 406
    05-31-2018, 02:42 AM Go to last post
  16. Same stage different stage

    Started by nsubulysses, 05-18-2018 09:22 PM
    • Replies: 7
    • Views: 419
    05-30-2018, 04:19 AM Go to last post
  17. Throwing metal film resistors in Fender amps

    Started by Wil, 01-09-2014 01:50 PM
    6 Pages
    1 2 3 ... 6
    • Replies: 209
    • Views: 21,300
    05-28-2018, 01:57 PM Go to last post
  18. another impedance question

    Started by Randall, 05-24-2018 12:04 AM
    • Replies: 22
    • Views: 514
    05-25-2018, 02:44 AM Go to last post
  19. Impedance for idiots????

    Started by Gtr0, 05-21-2018 12:13 PM
    • Replies: 15
    • Views: 667
    05-23-2018, 07:34 PM Go to last post
  20. Voltage rating on filter caps

    Started by Gtr0, 05-17-2018 12:59 PM
    2 Pages
    1 2
    • Replies: 48
    • Views: 1,110
    05-23-2018, 01:10 PM Go to last post
  21. AA720 Twin Reverb supply node values

    Started by Randall, 05-22-2018 02:39 AM
    • Replies: 2
    • Views: 212
    05-23-2018, 05:12 AM Go to last post
  22. screen and plate voltage

    Started by Randall, 05-19-2018 09:12 PM
    2 Pages
    1 2
    • Replies: 48
    • Views: 1,140
    05-23-2018, 01:21 AM Go to last post
  23. Chokes vs resistor

    Started by E biddy, 05-19-2018 02:19 AM
    • Replies: 22
    • Views: 655
    05-22-2018, 06:20 AM Go to last post
  24. Updated Champ amp heater circuit

    Started by Bob M., 05-14-2018 07:52 PM
    2 Pages
    1 2
    • Replies: 63
    • Views: 1,285
    05-21-2018, 06:35 PM Go to last post
  25. Question about voltage dop in a power supply

    Started by tpaairman, 01-12-2018 10:20 AM
    • Replies: 23
    • Views: 922
    05-20-2018, 11:48 AM Go to last post

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