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Forum: Theory & Design

  1. Tube heater question/idea

    Started by KCman, 01-31-2019 04:40 PM
    • Replies: 22
    • Views: 649
    02-02-2019, 01:31 AM Go to last post
  2. Shared cathode resistor question

    Started by catalin gramada, 01-30-2019 12:36 PM
    • Replies: 6
    • Views: 350
    01-30-2019, 07:06 PM Go to last post
    • Replies: 20
    • Views: 659
    01-28-2019, 02:22 PM Go to last post
  3. Toward a GU50 power stage

    Started by bea, 01-28-2019 03:27 AM
    • Replies: 0
    • Views: 222
    01-28-2019, 03:27 AM Go to last post
  4. Understanding "grid drive" to drive, 2, 4, 6 power tubes

    Started by nsubulysses, 12-31-2018 02:26 AM
    5 Pages
    1 2 3 ... 5
    • Replies: 167
    • Views: 4,593
    01-28-2019, 02:01 AM Go to last post
  5. power tube quad confusion

    Started by Randall, 01-21-2019 11:11 PM
    • Replies: 3
    • Views: 306
    01-22-2019, 01:11 AM Go to last post
  6. OK to run a 5V4GA recto in a 6G9 Tremolux?

    Started by Randall, 01-09-2019 03:04 AM
    • Replies: 18
    • Views: 711
    01-20-2019, 08:27 PM Go to last post
  7. Virtual center tap OT?

    Started by Satamax, 01-17-2019 03:13 PM
    • Replies: 13
    • Views: 519
    01-18-2019, 04:13 PM Go to last post
  8. Marshall caps

    Started by Valvehead, 01-18-2019 04:21 AM
    • Replies: 6
    • Views: 234
    01-18-2019, 03:10 PM Go to last post
  9. Designing for AB2

    Started by Smitty, 06-25-2006 04:36 PM
    2 Pages
    1 2
    • Replies: 53
    • Views: 11,841
    01-18-2019, 02:32 PM Go to last post
  10. AAA battery question

    Started by Randall, 01-17-2019 05:05 AM
    • Replies: 7
    • Views: 413
    01-18-2019, 02:34 AM Go to last post
  11. DC coupled C.F. question

    Started by catalin gramada, 01-12-2019 07:38 PM
    2 Pages
    1 2
    • Replies: 43
    • Views: 1,134
    01-16-2019, 07:40 PM Go to last post
  12. Switching scheme with muting and LEDs

    Started by frusciante89, 11-25-2018 05:44 PM
    2 Pages
    1 2
    • Replies: 42
    • Views: 1,817
    01-12-2019, 07:43 PM Go to last post
  13. Grid Current Emulation at Input to Power Amp

    Started by loudthud, 01-10-2019 08:57 AM
    • Replies: 11
    • Views: 543
    01-11-2019, 08:53 PM Go to last post
  14. D.i.y. Bias Probe

    Started by chocopower, 11-28-2007 11:39 PM
    • Replies: 28
    • Views: 30,356
    01-05-2019, 04:12 AM Go to last post
    • Replies: 3
    • Views: 332
    01-04-2019, 02:51 PM Go to last post
    • Replies: 118
    • Views: 4,069
    01-03-2019, 10:02 PM Go to last post
  15. Parallel FX Loop help

    Started by hylaphone, 12-30-2018 10:14 PM
    • Replies: 1
    • Views: 320
    12-31-2018, 03:40 PM Go to last post
    • Replies: 18
    • Views: 953
    12-29-2018, 04:14 AM Go to last post
  16. Schematic analysis of the Marshall Valvestate 8008

    Started by Roberto, 02-18-2016 04:54 AM
    2 Pages
    1 2
    • Replies: 41
    • Views: 5,438
    12-24-2018, 03:26 AM Go to last post
    • Replies: 14
    • Views: 1,353
    12-23-2018, 04:28 PM Go to last post
  17. No load protection for Class D amp

    Started by Gaz, 12-20-2018 12:42 AM
    • Replies: 21
    • Views: 840
    12-22-2018, 03:04 PM Go to last post
  18. Fender Vibro King rated at 60 watts?

    Started by Randall, 12-17-2018 10:52 PM
    • Replies: 19
    • Views: 871
    12-21-2018, 08:35 PM Go to last post
  19. AC/DC powered amp

    Started by dkevin, 12-11-2018 06:57 PM
    • Replies: 4
    • Views: 272
    12-15-2018, 05:46 PM Go to last post
  20. MOSFET Follies question...

    Started by Gaz, 12-04-2018 06:40 AM
    • Replies: 11
    • Views: 774
    12-11-2018, 01:35 PM Go to last post
  21. Not sure which output transformer to use.

    Started by tpaairman, 07-30-2018 05:07 AM
    • Replies: 13
    • Views: 1,097
    12-11-2018, 09:40 AM Go to last post

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