tube 101
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- O.T. Ed Brown
by kheper » Thu Oct 26, 2017 11:23 am
- 13 Replies
- 9849 Views
- Last post by zman01
Sun Mar 11, 2018 3:23 pm
- O.T. Ed Brown
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- slow death spiral
1, 2by nyazzip » Mon Mar 25, 2019 1:18 am - 19 Replies
- 24451 Views
- Last post by dannyr
Tue Jan 21, 2020 2:23 am
- slow death spiral
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- 6AS7 OTL Headphone Amp - Removing the 5u4
by coop402 » Tue May 01, 2018 4:22 pm - 14 Replies
- 9035 Views
- Last post by battradio
Fri May 04, 2018 3:12 pm
- 6AS7 OTL Headphone Amp - Removing the 5u4
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- 71A/50 SE amps?
by lego4040 » Fri Mar 23, 2018 1:15 pm - 1 Replies
- 2889 Views
- Last post by DeathRex
Sat Mar 24, 2018 6:29 pm
- 71A/50 SE amps?
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- Korg Nutube and GSP
by kheper » Thu Jan 04, 2018 1:39 pm
- 9 Replies
- 5065 Views
- Last post by Geek
Thu Mar 08, 2018 2:41 am
- Korg Nutube and GSP
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- Amp PSUs - Joule per Watt?
by soundbrigade » Mon Jan 01, 2018 3:53 pm - 5 Replies
- 3511 Views
- Last post by Geek
Fri Jan 05, 2018 12:56 am
- Amp PSUs - Joule per Watt?
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- Vacuum Tube Analyzer
by paart » Tue Dec 26, 2017 9:53 pm - 1 Replies
- 2902 Views
- Last post by Geek
Tue Dec 26, 2017 10:29 pm
- Vacuum Tube Analyzer
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- ECL82/PCL82 amp
by 6B4G » Sun Dec 10, 2017 9:47 am
- 6 Replies
- 4824 Views
- Last post by 6B4G
Tue Dec 12, 2017 11:03 am
- ECL82/PCL82 amp
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- Eico ST-96 tuner.
by DeathRex » Mon Nov 04, 2013 9:07 am
- 10 Replies
- 6404 Views
- Last post by DeathRex
Sat Nov 11, 2017 4:43 pm
- Eico ST-96 tuner.
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- Help I.D. a 300B Brand?
by Geek » Sat Sep 23, 2017 10:08 pm
- 6 Replies
- 4146 Views
- Last post by Geek
Mon Sep 25, 2017 10:20 pm
- Help I.D. a 300B Brand?
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- Photobucket
by DeathRex » Mon Jul 17, 2017 8:03 am - 2 Replies
- 3305 Views
- Last post by DeathRex
Tue Jul 18, 2017 9:56 am
- Photobucket
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- single ended gu50 schematic
1, 2 by willie » Fri Oct 17, 2014 4:19 pm
- 16 Replies
- 14392 Views
- Last post by DeathRex
Wed Jul 12, 2017 11:29 am
- single ended gu50 schematic
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- Power supply question
by dannyr » Sat Jun 24, 2017 3:05 pm
- 8 Replies
- 4874 Views
- Last post by dannyr
Sat Jul 01, 2017 1:32 am
- Power supply question
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- New Output-Tube Testing Method
by paart » Thu Jun 15, 2017 10:05 am - 1 Replies
- 2892 Views
- Last post by Geek
Thu Jun 15, 2017 8:12 pm
- New Output-Tube Testing Method
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- Speaker impedance. How close should actual load be?
by Newbietube » Thu Jan 12, 2017 2:36 pm - 3 Replies
- 3748 Views
- Last post by Geek
Tue Mar 28, 2017 3:07 am
- Speaker impedance. How close should actual load be?
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- Did everyone get their ruler from Digikey?
by DeathRex » Thu Feb 16, 2017 3:39 pm - 1 Replies
- 2982 Views
- Last post by Geek
Sat Feb 18, 2017 3:04 am
- Did everyone get their ruler from Digikey?
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- McIntosh MA 6100
1, 2 by DeathRex » Fri Apr 29, 2016 11:20 am
- 17 Replies
- 10603 Views
- Last post by Geek
Mon Jan 30, 2017 2:23 pm
- McIntosh MA 6100
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- Running a transformer in reverse.
by Newbietube » Thu Nov 24, 2016 5:40 am - 4 Replies
- 4768 Views
- Last post by Newbietube
Thu Jan 12, 2017 2:28 pm
- Running a transformer in reverse.
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- CCS for small signal pentodes
by DeathRex » Wed Jan 11, 2017 5:50 pm - 5 Replies
- 4015 Views
- Last post by Geek
Thu Jan 12, 2017 1:01 pm
- CCS for small signal pentodes
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- Help understanding some things about amplifier design
by mrtubenewbie » Tue Aug 02, 2016 12:08 pm
- 5 Replies
- 5762 Views
- Last post by Impmon
Fri Dec 16, 2016 11:41 pm
- Help understanding some things about amplifier design
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- Opinion, pls, for tubes Golden Gate
by azazello » Tue Dec 06, 2016 12:15 pm - 4 Replies
- 4384 Views
- Last post by cdmawolf
Thu Dec 08, 2016 9:06 pm
- Opinion, pls, for tubes Golden Gate
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- ST-70 Power supply questions
1, 2by franciscano » Sun Oct 30, 2016 5:57 am - 15 Replies
- 10329 Views
- Last post by Quad
Thu Nov 03, 2016 11:11 am
- ST-70 Power supply questions
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- Dynaco Dyna PAS PC5 PC6 pcb
by erez1012 » Fri Sep 30, 2016 6:28 am
- 4 Replies
- 4522 Views
- Last post by Gingertube
Tue Oct 04, 2016 11:19 pm
- Dynaco Dyna PAS PC5 PC6 pcb
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- Diy tube amp recommandation
by franciscano » Sat Sep 10, 2016 10:39 pm - 5 Replies
- 4734 Views
- Last post by franciscano
Mon Sep 12, 2016 2:28 am
- Diy tube amp recommandation
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- Philco Radio Gallery 1928-1960
by EWBrown » Wed Sep 07, 2016 7:18 pm - 2 Replies
- 3495 Views
- Last post by EWBrown
Wed Sep 07, 2016 8:32 pm
- Philco Radio Gallery 1928-1960
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- Introducing the 26E6WG - Plinker of the Day
by EWBrown » Mon Aug 15, 2016 1:01 pm - 4 Replies
- 5152 Views
- Last post by EWBrown
Mon Aug 29, 2016 3:43 pm
- Introducing the 26E6WG - Plinker of the Day
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- Tube data for the 9AM10
by rsumperl » Sun Aug 28, 2016 7:31 pm - 2 Replies
- 3688 Views
- Last post by EWBrown
Sun Aug 28, 2016 8:41 pm
- Tube data for the 9AM10
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- Best new 6CA7/EL34?
by joeztech » Sun Aug 21, 2016 2:22 pm - 2 Replies
- 3723 Views
- Last post by joeztech
Sun Aug 21, 2016 3:41 pm
- Best new 6CA7/EL34?
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- Couple of Russian "big boys"
by EWBrown » Sat Aug 20, 2016 7:50 pm - 1 Replies
- 3530 Views
- Last post by Geek
Sat Aug 20, 2016 10:04 pm
- Couple of Russian "big boys"
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- Sylvania SN-1551B mystery triode ?
by EWBrown » Wed Aug 17, 2016 3:56 pm - 2 Replies
- 4031 Views
- Last post by EWBrown
Thu Aug 18, 2016 3:10 pm
- Sylvania SN-1551B mystery triode ?
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- Three pairs of transformers and what to do with them
by soundbrigade » Tue Jul 26, 2016 4:35 pm - 8 Replies
- 5525 Views
- Last post by soundbrigade
Wed Jul 27, 2016 4:36 pm
- Three pairs of transformers and what to do with them
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- Small SE amp with no pre-amp
by Vernrich » Wed Jun 15, 2016 11:50 pm - 3 Replies
- 4760 Views
- Last post by soundbrigade
Thu Jun 23, 2016 10:39 am
- Small SE amp with no pre-amp
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- New ideas in an old fashioned AM tuner
1, 2 by LW1DSE » Mon Apr 25, 2016 7:28 am
- 17 Replies
- 12655 Views
- Last post by LW1DSE
Wed Jun 22, 2016 6:32 am
- New ideas in an old fashioned AM tuner
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- Different tube distortion - why?
by soundbrigade » Sat Jun 11, 2016 8:59 am - 2 Replies
- 3765 Views
- Last post by DeathRex
Sat Jun 11, 2016 8:09 pm
- Different tube distortion - why?
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- VOX AC15 - DIY Repair assist
by JCB42 » Tue Jun 07, 2016 9:18 am - 0 Replies
- 4346 Views
- Last post by JCB42
Tue Jun 07, 2016 9:18 am
- VOX AC15 - DIY Repair assist
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- Amplifier Using B Minus instead of B Plus
by joeztech » Sun Jun 05, 2016 3:00 pm - 2 Replies
- 3636 Views
- Last post by joeztech
Mon Jun 06, 2016 5:32 am
- Amplifier Using B Minus instead of B Plus
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- Make Your Own Tubes- New Forum
by rmyauck » Sun May 29, 2016 9:25 am - 0 Replies
- 4220 Views
- Last post by rmyauck
Sun May 29, 2016 9:25 am
- Make Your Own Tubes- New Forum
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- Independent tube biasing?
by fcervone » Wed May 04, 2016 4:52 pm - 5 Replies
- 5109 Views
- Last post by dcriner
Sat May 28, 2016 4:46 pm
- Independent tube biasing?
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- Vacuum Tube Time Machine
by shlafferty » Mon May 02, 2016 2:33 pm
- 3 Replies
- 4295 Views
- Last post by shlafferty
Fri May 06, 2016 7:33 am
- Vacuum Tube Time Machine
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- Mcintosh C24 rebuild ideas
1, 2 by DeathRex » Wed Feb 10, 2016 3:57 pm
- 15 Replies
- 11186 Views
- Last post by DeathRex
Mon Apr 25, 2016 12:08 pm
- Mcintosh C24 rebuild ideas
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- CBS-Hytron Dice-a-tron
by EWBrown » Mon Apr 18, 2016 7:08 pm - 6 Replies
- 4909 Views
- Last post by soundbrigade
Sun Apr 24, 2016 6:54 am
- CBS-Hytron Dice-a-tron
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- need tube chart for califone 26V cosmopolitan 2
by flashbk13 » Fri Mar 25, 2016 8:48 pm
- 14 Replies
- 8836 Views
- Last post by flashbk13
Tue Apr 19, 2016 5:34 pm
- need tube chart for califone 26V cosmopolitan 2
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- Low gain, low current, low impedance stage
by DeathRex » Mon Jun 15, 2015 6:18 pm - 3 Replies
- 4897 Views
- Last post by LW1DSE
Mon Apr 18, 2016 10:05 am
- Low gain, low current, low impedance stage
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- Headphones and PP-amps
by soundbrigade » Sat Jun 06, 2015 3:32 pm - 7 Replies
- 6342 Views
- Last post by LW1DSE
Mon Apr 18, 2016 9:49 am
- Headphones and PP-amps
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- Advice on a 6550 pp amp
by jbesound » Sat Mar 26, 2016 3:21 pm
- 4 Replies
- 4853 Views
- Last post by jbesound
Thu Apr 14, 2016 8:51 pm
- Advice on a 6550 pp amp
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- Testing Rectifier Tube
by skidave » Tue Feb 09, 2016 10:56 am - 4 Replies
- 4876 Views
- Last post by LW1DSE
Thu Apr 14, 2016 1:03 pm
- Testing Rectifier Tube
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- The Knifonium, the vacuum tube synthesizer
by EWBrown » Fri Apr 08, 2016 6:33 pm - 1 Replies
- 3708 Views
- Last post by Geek
Sat Apr 09, 2016 12:26 am
- The Knifonium, the vacuum tube synthesizer
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- Finished the ST-70 from Blair
by DeathRex » Sun Jan 24, 2016 4:48 pm
- 6 Replies
- 5332 Views
- Last post by DeathRex
Tue Jan 26, 2016 7:21 am
- Finished the ST-70 from Blair
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- EC88 dirver PL84 push-pull,DIY with a picture tells a story.
by turing » Sun Jan 17, 2016 10:27 am - 13 Replies
- 9141 Views
- Last post by turing
Wed Jan 20, 2016 3:16 am
- EC88 dirver PL84 push-pull,DIY with a picture tells a story.
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- My 6GB5 PPP
by DeathRex » Sun Dec 20, 2015 12:00 pm
- 12 Replies
- 9035 Views
- Last post by DeathRex
Fri Jan 15, 2016 11:29 am
- My 6GB5 PPP
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