ask your general tube related questions here
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- 6c33c SE Duplex Schematics
by Ax1 » Sat Mar 08, 2014 9:19 am
- 5 Replies
- 5318 Views
- Last post by Ax1
Mon Mar 24, 2014 3:04 pm
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- Telefunken-Elektroakustik Tubes??
by snitch56 » Mon Mar 10, 2014 11:30 pm
- 4 Replies
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Wed Mar 12, 2014 1:50 pm
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- 5U8C / 5Z8C Rectifier Tube
by Ax1 » Mon Mar 03, 2014 2:46 pm
- 4 Replies
- 4317 Views
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Tue Mar 04, 2014 6:37 pm
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- After first 100uF cap power supply how big can be cap 2?
by vargasmongo3435 » Mon Feb 17, 2014 7:38 am
- 3 Replies
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- Last post by rock4016
Thu Feb 27, 2014 7:50 am
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- Push pull screen drive
by DeathRex » Thu Feb 20, 2014 9:22 am
- 6 Replies
- 2993 Views
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Mon Feb 24, 2014 9:31 am
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- My single ended 811
by DeathRex » Sun Feb 16, 2014 12:36 pm
- 14 Replies
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Tue Feb 18, 2014 7:02 pm
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- KT88?
by mathewf » Tue Jan 14, 2014 4:38 am
- 5 Replies
- 3676 Views
- Last post by kygeezer
Sat Feb 08, 2014 11:08 am
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- Tone control
by 6B4G » Wed Feb 05, 2014 11:11 am
- 8 Replies
- 4577 Views
- Last post by 6B4G
Thu Feb 06, 2014 9:59 am
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- I got a humdinger of hum.
by DeathRex » Wed Feb 05, 2014 9:33 pm
- 1 Replies
- 1750 Views
- Last post by kheper
Wed Feb 05, 2014 10:10 pm
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- Carbon Composition Vs. Metal Oxide Resistors for PSU overhau
by Proschuno » Tue Feb 04, 2014 4:18 pm
- 3 Replies
- 2178 Views
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Wed Feb 05, 2014 11:52 am
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- Another amp question KB85 clone
by 6B4G » Sun Jan 26, 2014 2:08 am
- 6 Replies
- 3155 Views
- Last post by 6B4G
Wed Feb 05, 2014 11:00 am
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- Single Ended KT 88 amplifier
by sergeykz » Fri Apr 27, 2012 7:25 am
- 14 Replies
- 12467 Views
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Tue Feb 04, 2014 12:29 am
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- Tube repair work suggestions
by SDS-PAGE » Sun Feb 02, 2014 8:20 pm
- 1 Replies
- 1732 Views
- Last post by mesherm
Mon Feb 03, 2014 9:14 pm
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- Article to test power transformer current?
by Blair » Sun Jan 19, 2014 5:30 pm
- 12 Replies
- 4739 Views
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Mon Feb 03, 2014 10:26 am
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- WE 437A Triode
by EWBrown » Tue Jan 28, 2014 3:05 pm
- 4 Replies
- 2692 Views
- Last post by Shannon Parks
Sun Feb 02, 2014 3:59 am
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- 6sn7 pre amp
by 6B4G » Tue Jan 21, 2014 2:55 am
- 11 Replies
- 5006 Views
- Last post by 6B4G
Thu Jan 23, 2014 11:57 am
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- variac humming
by nyazzip » Mon Jan 20, 2014 12:41 pm
- 7 Replies
- 2954 Views
- Last post by nyazzip
Tue Jan 21, 2014 12:17 pm
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- KT66SE
by 6B4G » Sat Oct 05, 2013 12:00 am
- 72 Replies
- 25864 Views
- Last post by 6B4G
Tue Jan 21, 2014 2:45 am
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- UTC O-10 whats it for?
by Blair » Sat Jan 18, 2014 8:27 pm
- 5 Replies
- 3647 Views
- Last post by battradio
Sat Jan 18, 2014 11:58 pm
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- Learning something new everyday
by SDS-PAGE » Wed Jan 15, 2014 9:40 am
- 1 Replies
- 1711 Views
- Last post by battradio
Wed Jan 15, 2014 11:29 pm
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- Triode jumping ???
by hilldweller » Mon Dec 30, 2013 3:53 pm
- 13 Replies
- 4693 Views
- Last post by Robert Cham
Mon Jan 13, 2014 5:52 pm
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- Different AC ripple on either side of preamp coupling cap
by Blair » Tue Jan 07, 2014 11:09 pm
- 9 Replies
- 3742 Views
- Last post by Blair
Thu Jan 09, 2014 12:53 pm
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- 5933 / 807W
by EWBrown » Sun Jan 05, 2014 1:09 pm
- 3 Replies
- 2664 Views
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Mon Jan 06, 2014 4:04 pm
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- Hickok tube tester parts and service!
by hilldweller » Sun Dec 08, 2013 11:47 am
- 2 Replies
- 2530 Views
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Sat Jan 04, 2014 5:15 pm
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- Multivibrator VCO Tuning help
by Proschuno » Sat Jan 04, 2014 11:30 am
- 0 Replies
- 1865 Views
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Sat Jan 04, 2014 11:30 am
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- Choke input capacitor with tube rectifier?
by Blair » Fri Jan 03, 2014 8:53 am
- 3 Replies
- 2321 Views
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Fri Jan 03, 2014 1:20 pm
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- 6SL7 vs 6SU7 ?
by hilldweller » Sun Dec 22, 2013 11:21 am
- 6 Replies
- 5013 Views
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Fri Jan 03, 2014 6:03 am
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- Interesting g2 feed
by AmadeusMozart » Wed Jan 01, 2014 8:00 pm
- 6 Replies
- 3055 Views
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Thu Jan 02, 2014 3:53 pm
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- Alps is canceling the blue velvet.
by DeathRex » Thu Dec 19, 2013 6:14 pm
- 1 Replies
- 1869 Views
- Last post by Geek
Fri Dec 20, 2013 6:23 am
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- Help identifying this tube device
by dudegibbs » Sun Dec 15, 2013 6:41 pm
- 5 Replies
- 3079 Views
- Last post by snitch56
Wed Dec 18, 2013 3:42 pm
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- Vintage Sylvania Loctal Tube Advertisement
by EWBrown » Wed Aug 28, 2013 7:17 pm
- 5 Replies
- 3411 Views
- Last post by EWBrown
Sun Dec 08, 2013 7:52 pm
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- Great source for N.O.S. tubes
by hilldweller » Tue Dec 03, 2013 6:34 pm
- 11 Replies
- 4510 Views
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Fri Dec 06, 2013 9:28 pm
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- All tube inverter from batteries?
by Austin Translation » Wed Aug 10, 2011 10:10 am
- 12 Replies
- 5890 Views
- Last post by EWBrown
Thu Dec 05, 2013 10:13 am
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- Mic Preamp
by 6B4G » Tue Nov 19, 2013 5:41 am
- 4 Replies
- 2534 Views
- Last post by 6B4G
Thu Nov 28, 2013 11:35 pm
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- Has anyone used
by 6B4G » Sun Nov 24, 2013 3:33 am
- 2 Replies
- 2011 Views
- Last post by 6B4G
Sun Nov 24, 2013 9:04 am
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- 845 811A filament supply AC or DC
by DeathRex » Sat Nov 16, 2013 9:17 am
- 13 Replies
- 6522 Views
- Last post by DeathRex
Sat Nov 23, 2013 8:03 pm
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- 6BW4?
by Blair » Wed Nov 20, 2013 7:54 pm
- 9 Replies
- 4730 Views
- Last post by kheper
Fri Nov 22, 2013 1:39 pm
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- Chassis hole for 838 813
by DeathRex » Wed Nov 20, 2013 8:24 pm
- 5 Replies
- 2362 Views
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Thu Nov 21, 2013 1:08 am
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- Troubleshooting a Dynaco AF-6
by DeathRex » Fri Nov 08, 2013 9:51 am
- 2 Replies
- 2089 Views
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Wed Nov 20, 2013 12:13 pm
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- Eico HF-20 Iron Question
by Geek » Sat Nov 16, 2013 3:27 am
- 3 Replies
- 2360 Views
- Last post by battradio
Sat Nov 16, 2013 4:51 am
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- Kid "safer" PP 6550 amp
by Blair » Thu Aug 29, 2013 8:46 pm
- 26 Replies
- 11128 Views
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Fri Nov 15, 2013 6:05 pm
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- easy 6v6 schematic
by Dk1975 » Tue Nov 12, 2013 3:31 pm
- 11 Replies
- 6673 Views
- Last post by TomMcNally
Wed Nov 13, 2013 9:30 pm
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- Any Tube Designers Out There: Money For You
by eddiegnz1 » Tue Nov 05, 2013 8:32 pm
- 4 Replies
- 2936 Views
- Last post by nyazzip
Sat Nov 09, 2013 2:20 am
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- making tubes
by nyazzip » Sat Nov 09, 2013 1:47 am
- 0 Replies
- 1868 Views
- Last post by nyazzip
Sat Nov 09, 2013 1:47 am
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- Tube rectifier capacitance beyond the pi filter
by Blair » Thu Nov 07, 2013 6:03 pm
- 4 Replies
- 2410 Views
- Last post by hilldweller
Fri Nov 08, 2013 5:15 am
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- EL 509 / 6KG6 output tubes w/plate cap top
by hilldweller » Mon Oct 07, 2013 6:12 pm
- 17 Replies
- 11389 Views
- Last post by Salo
Wed Nov 06, 2013 11:50 pm
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- 75 Watt/Channel Monoblock Custom Amp
by eddiegnz1 » Sat Nov 02, 2013 9:05 pm
- 5 Replies
- 2920 Views
- Last post by Hotsauce
Wed Nov 06, 2013 5:41 am
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- T - 1610 Output tube
by hilldweller » Wed Oct 30, 2013 12:15 pm
- 4 Replies
- 2601 Views
- Last post by Hotsauce
Thu Oct 31, 2013 5:52 am
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- Tube Suggestions for my OPTs
by SDS-PAGE » Thu Oct 10, 2013 4:19 pm
- 3 Replies
- 2064 Views
- Last post by 20to20
Fri Oct 11, 2013 6:52 am
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- 3B7 dual directed heated triode
by EWBrown » Wed Aug 14, 2013 7:17 pm
- 1 Replies
- 2056 Views
- Last post by Rpmac
Thu Oct 10, 2013 10:58 am
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