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Forum: Theory & Design

  1. Sticky Thread Sticky: making sure I understand OT secondary ground

    Started by dmartn149, 08-31-2019 10:08 PM
    • Replies: 7
    • Views: 956
    09-02-2019, 07:06 AM Go to last post
  1. "Swirly" Distortion Decay Sound Fix !

    Started by HaroldBrooks, 12-13-2019 07:17 PM
    • Replies: 19
    • Views: 198
    Today, 09:52 PM Go to last post
  2. YADTMI - yet another dual triode mixing idea

    Started by SoulFetish, 12-12-2019 07:22 AM
    • Replies: 9
    • Views: 207
    Yesterday, 11:41 PM Go to last post
  3. Cathode follower without elevated heater voltage

    Started by Dark Mavis, 03-03-2019 02:26 PM
    4 Pages
    1 2 3 ... 4
    • Replies: 139
    • Views: 4,970
    Yesterday, 04:32 PM Go to last post
  4. Testing non-electrolytic caps to find the "shielded" end

    Started by gearhead63, 11-16-2015 02:15 PM
    2 Pages
    1 2
    • Replies: 36
    • Views: 2,454
    12-13-2019, 02:57 PM Go to last post
  5. I want to build an amp selector (two amps a/b, one cab)

    Started by Gtr0, 10-05-2019 08:52 AM
    3 Pages
    1 2 3
    • Replies: 84
    • Views: 2,495
    12-10-2019, 09:59 AM Go to last post
  6. Quick question regard biasing

    Started by catalin gramada, 12-02-2019 03:02 PM
    • Replies: 16
    • Views: 404
    12-03-2019, 05:31 PM Go to last post
  7. Dual tap OT quandry

    Started by Randall, 11-23-2019 10:30 PM
    • Replies: 34
    • Views: 693
    12-03-2019, 03:48 AM Go to last post
  8. DC heater variations

    Started by m1989jmp, 12-01-2019 11:42 AM
    • Replies: 4
    • Views: 238
    12-02-2019, 09:29 AM Go to last post
    • Replies: 22
    • Views: 442
    11-30-2019, 05:36 PM Go to last post
    • Replies: 15
    • Views: 623
    11-30-2019, 08:16 AM Go to last post
    • Replies: 2
    • Views: 138
    11-29-2019, 09:09 PM Go to last post
  9. Pentode Screen Capacitors ? I don't get it !

    Started by HaroldBrooks, 11-27-2019 03:00 PM
    • Replies: 10
    • Views: 295
    11-28-2019, 05:57 PM Go to last post
    • Replies: 3
    • Views: 209
    11-22-2019, 02:17 PM Go to last post
  10. Output transformer Harmonics Cancellation ?

    Started by HaroldBrooks, 11-19-2019 01:15 PM
    • Replies: 22
    • Views: 475
    11-20-2019, 02:26 PM Go to last post
    • Replies: 6
    • Views: 168
    11-20-2019, 01:07 PM Go to last post
    • Replies: 19
    • Views: 1,164
    11-18-2019, 04:00 PM Go to last post
  11. Peavey MX VTX Series Amp - Output Section

    Started by TomCarlos, 11-17-2019 06:37 PM
    • Replies: 6
    • Views: 226
    11-18-2019, 03:24 PM Go to last post
  12. 2-way speaker crossover design

    Started by m1989jmp, 10-26-2019 12:17 PM
    • Replies: 8
    • Views: 395
    11-17-2019, 10:32 AM Go to last post
  13. VHT/Fryette power amps

    Started by kostic2000, 11-15-2019 11:49 AM
    • Replies: 8
    • Views: 390
    11-15-2019, 10:47 PM Go to last post
  14. Transformers

    Started by vintagekiki, 07-20-2018 11:34 PM
    • Replies: 8
    • Views: 1,317
    11-07-2019, 05:29 AM Go to last post
  15. What is one KT66 doing in a EL34 amp?

    Started by Randall, 11-01-2019 01:20 AM
    • Replies: 26
    • Views: 673
    11-02-2019, 12:46 AM Go to last post
    • Replies: 8
    • Views: 418
    11-01-2019, 03:52 AM Go to last post
    • Replies: 4
    • Views: 348
    10-31-2019, 03:35 PM Go to last post
    • Replies: 7
    • Views: 356
    10-31-2019, 11:23 AM Go to last post
    • Replies: 14
    • Views: 436
    10-31-2019, 11:18 AM Go to last post
    • Replies: 1
    • Views: 173
    10-28-2019, 06:04 PM Go to last post
  16. Zener Diodes to drop Heater Voltage ?

    Started by HaroldBrooks, 10-25-2019 08:22 PM
    • Replies: 31
    • Views: 773
    10-27-2019, 08:56 PM Go to last post
    • Replies: 8
    • Views: 395
    10-25-2019, 09:50 AM Go to last post

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