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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: 803
    09-02-2019, 07:06 AM Go to last post
  1. Fast blow or Time delay fuses?

    Started by Randall, 06-04-2016 10:17 PM
    2 Pages
    1 2
    • Replies: 35
    • Views: 121,823
    06-08-2016, 01:55 AM Go to last post
  2. LDRs as pots?

    Started by Gregg, 10-25-2006 05:39 PM
    6 Pages
    1 2 3 ... 6
    • Replies: 192
    • Views: 58,315
    10-28-2009, 11:36 AM Go to last post
  3. Voltage on Preamp Tubes?

    Started by chipaudette, 12-03-2007 02:10 PM
    • Replies: 33
    • Views: 57,609
    09-03-2008, 09:00 AM Go to last post
  4. 6BM8 tubes... what to use them for!

    Started by Bruce / Mission Amps, 04-25-2008 01:09 AM
    3 Pages
    1 2 3
    • Replies: 81
    • Views: 48,527
    01-29-2013, 04:01 AM Go to last post
  5. Power Scaling is Flawed?

    Started by tbryanh, 05-16-2007 09:40 PM
    5 Pages
    1 2 3 ... 5
    • Replies: 158
    • Views: 44,307
    06-07-2012, 09:36 AM Go to last post
  6. EL34/EL84 versus 6V6/6L6

    Started by PRNDL, 05-17-2009 07:11 PM
    • Replies: 7
    • Views: 41,236
    05-29-2009, 10:43 PM Go to last post
  7. 6AQ5 vs. 6BQ5/EL84

    Started by EETStudent, 05-12-2008 08:23 PM
    • Replies: 22
    • Views: 40,967
    03-04-2017, 10:09 PM Go to last post
  8. Vox AC30 head layout

    Started by fabiomayo, 08-11-2007 10:45 PM
    • Replies: 23
    • Views: 39,665
    04-01-2013, 12:41 AM Go to last post
  9. el84 bias...How hot?

    Started by Chuck H, 12-24-2008 06:36 AM
    3 Pages
    1 2 3
    • Replies: 90
    • Views: 38,045
    02-07-2014, 12:12 PM Go to last post
  10. Real TrainWreck mojo!

    Started by Chuck H, 12-31-2013 05:36 AM
    8 Pages
    1 2 3 ... 8
    • Replies: 264
    • Views: 35,853
    11-18-2018, 09:13 PM Go to last post
  11. Critique my Pspice and simple tube amp design?

    Started by Tonefishin, 07-12-2008 07:45 PM
    • Replies: 29
    • Views: 34,876
    07-17-2008, 07:37 PM Go to last post
  12. D.i.y. Bias Probe

    Started by chocopower, 11-28-2007 11:39 PM
    • Replies: 28
    • Views: 31,653
    01-05-2019, 04:12 AM Go to last post
  13. high gain amp design

    Started by beinz, 12-17-2011 10:31 PM
    3 Pages
    1 2 3
    • Replies: 86
    • Views: 29,772
    01-14-2012, 07:09 PM Go to last post
  14. What is a cathode follower?

    Started by bluefoxicy, 04-24-2008 04:54 AM
    • Replies: 10
    • Views: 29,530
    04-25-2008, 12:26 PM Go to last post
  15. Cool Bass pre-amp

    Started by RPmanen, 03-26-2007 12:43 AM
    • Replies: 33
    • Views: 26,507
    04-17-2007, 02:45 PM Go to last post
  16. Throwing metal film resistors in Fender amps

    Started by Wil, 01-09-2014 02:50 PM
    6 Pages
    1 2 3 ... 6
    • Replies: 209
    • Views: 26,045
    05-28-2018, 02:57 PM Go to last post
  17. The Official Dual Rail Thread

    Started by Wilder Amplification, 04-07-2010 10:02 PM
    6 Pages
    1 2 3 ... 6
    • Replies: 199
    • Views: 25,920
    06-01-2017, 09:59 PM Go to last post
  18. Egnater Rebel 20 20 Schematic?

    Started by olddawg, 11-18-2008 06:14 PM
    • Replies: 16
    • Views: 24,586
    08-29-2011, 10:54 PM Go to last post
  19. EL84 Amp Design...Why Such High B+ Voltages?

    Started by Wilder Amplification, 04-02-2011 06:08 PM
    3 Pages
    1 2 3
    • Replies: 81
    • Views: 23,659
    05-31-2014, 02:48 AM Go to last post
    • Replies: 12
    • Views: 23,389
    12-04-2007, 01:42 AM Go to last post
    • Replies: 4
    • Views: 23,356
    12-28-2009, 07:29 PM Go to last post
  20. Phaez gives away EL84 design

    Started by tedmich, 04-29-2010 06:00 PM
    2 Pages
    1 2
    • Replies: 62
    • Views: 23,244
    02-17-2019, 08:35 PM Go to last post
  21. Direct Coupling with Zener Diodes

    Started by exclamationmark, 04-26-2011 05:59 PM
    6 Pages
    1 2 3 ... 6
    • Replies: 180
    • Views: 22,894
    09-15-2012, 09:05 PM Go to last post
  22. EF 86 pentode

    Started by Normybaby, 09-06-2007 07:52 PM
    2 Pages
    1 2
    • Replies: 39
    • Views: 22,445
    04-19-2008, 04:34 PM Go to last post
  23. Output tube impedance

    Started by DaBreeze, 11-16-2009 01:38 PM
    2 Pages
    1 2
    • Replies: 59
    • Views: 22,280
    06-10-2019, 05:43 AM Go to last post
  24. Reverb and Driver tube: 12AT7 or 12AX7?

    Started by EETStudent, 08-10-2008 05:58 AM
    • Replies: 30
    • Views: 21,968
    02-29-2012, 11:18 PM Go to last post
    • Replies: 19
    • Views: 21,363
    01-18-2017, 05:06 PM Go to last post
  25. Audio - linear transistors

    Started by AkisTzortzis, 07-25-2008 09:07 AM
    • Replies: 19
    • Views: 21,283
    07-28-2008, 09:11 PM Go to last post

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