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Forum: Theory & Design

  1. Amp Wattage Measurement - Approximations

    Started by HaroldBrooks, 06-17-2019 04:53 PM
    • Replies: 20
    • Views: 261
    Today, 04:19 AM Go to last post
  2. Tweed Twin power reduction

    Started by Randall, 06-14-2019 07:09 PM
    2 Pages
    1 2
    • Replies: 38
    • Views: 593
    Yesterday, 05:30 PM Go to last post
    • Replies: 12
    • Views: 256
    Yesterday, 03:37 PM Go to last post
  3. Dropping filament voltage with diodes

    Started by Bloomfield, 06-16-2019 07:43 PM
    • Replies: 6
    • Views: 143
    06-17-2019, 10:34 PM Go to last post
  4. Garnet Herzog questions

    Started by Randall, 06-17-2019 02:58 AM
    • Replies: 11
    • Views: 161
    06-17-2019, 07:53 PM Go to last post
    • Replies: 21
    • Views: 230
    06-17-2019, 02:24 AM Go to last post
  5. Moved: Im stunned at the price of some amps nowadays! Walmart!

    Started by olddawg, 06-14-2019 08:02 PM
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  6. Moved: Acoustic 370 repair

    Started by Thomas Robert, 06-15-2019 09:36 PM
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  7. can I use this OT?

    Started by dmartn149, 06-08-2019 02:37 AM
    • Replies: 34
    • Views: 581
    06-15-2019, 09:05 PM Go to last post
  8. Subbing a resistor for a speaker

    Started by Randall, 06-13-2019 10:16 PM
    • Replies: 11
    • Views: 279
    06-14-2019, 10:49 PM Go to last post
  9. How to determine fuse rating

    Started by Randall, 06-12-2019 11:28 PM
    • Replies: 16
    • Views: 415
    06-14-2019, 08:21 PM Go to last post
  10. Reduced V1 Hum - New Trick (For Me that is)

    Started by HaroldBrooks, 04-28-2019 05:54 AM
    • Replies: 11
    • Views: 696
    06-12-2019, 07:08 AM Go to last post
  11. Hammond power supply cap subs

    Started by Randall, 06-07-2019 12:33 AM
    • Replies: 7
    • Views: 283
    06-11-2019, 10:50 PM Go to last post
  12. Output Transformer - 4 wires ?

    Started by HaroldBrooks, 06-10-2019 06:25 PM
    • Replies: 1
    • Views: 179
    06-10-2019, 08:51 PM Go to last post
  13. Output tube impedance

    Started by DaBreeze, 11-16-2009 01:38 PM
    2 Pages
    1 2
    • Replies: 59
    • Views: 20,841
    06-10-2019, 04:43 AM Go to last post
  14. Marshall origin series 20w....why 20?

    Started by daz, 06-09-2019 08:41 PM
    • Replies: 5
    • Views: 264
    06-10-2019, 04:24 AM Go to last post
  15. Dumb series/12.6V heater questions

    Started by Zozobra, 06-04-2019 11:18 AM
    • Replies: 5
    • Views: 261
    06-06-2019, 02:15 PM Go to last post
  16. Effects loop. why?

    Started by Sea Chief, 05-26-2019 02:55 PM
    3 Pages
    1 2 3
    • Replies: 83
    • Views: 1,581
    06-06-2019, 01:34 PM Go to last post
  17. low voltage single ended el84

    Started by cminor9, 05-29-2019 04:25 AM
    • Replies: 34
    • Views: 855
    06-05-2019, 02:52 PM Go to last post
    • Replies: 125
    • Views: 4,950
    06-04-2019, 02:05 AM Go to last post
  18. Ghost Notes - Use Scope to Track down ?

    Started by HaroldBrooks, 05-24-2019 12:41 AM
    • Replies: 16
    • Views: 394
    05-24-2019, 05:19 AM Go to last post
  19. Power supply variation

    Started by nsubulysses, 05-18-2019 08:58 AM
    • Replies: 24
    • Views: 726
    05-23-2019, 08:32 PM Go to last post
  20. PI drive for 6 power tube amp

    Started by nsubulysses, 05-20-2019 08:03 PM
    • Replies: 5
    • Views: 307
    05-21-2019, 10:17 PM Go to last post
  21. Ever wonder about the Sprague Atom controversy?

    Started by Randall, 05-17-2019 10:35 PM
    • Replies: 22
    • Views: 794
    05-20-2019, 12:53 PM Go to last post
    • Replies: 13
    • Views: 498
    05-19-2019, 05:09 PM Go to last post
  22. Maximum DC voltage on output of amp?

    Started by Axtman, 05-14-2019 04:57 AM
    • Replies: 2
    • Views: 315
    05-14-2019, 03:25 PM Go to last post

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