tube 101
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- O.T. Ed Brown
by kheper » Thu Oct 26, 2017 11:23 am
- 13 Replies
- 3182 Views
- Last post by zman01
Sun Mar 11, 2018 3:23 pm
- O.T. Ed Brown
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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
- 1649 Views
- Last post by rock4016
Thu Feb 27, 2014 7:50 am
- After first 100uF cap power supply how big can be cap 2?
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- Push pull screen drive
by DeathRex » Thu Feb 20, 2014 9:22 am - 6 Replies
- 1559 Views
- Last post by DeathRex
Mon Feb 24, 2014 9:31 am
- Push pull screen drive
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- My single ended 811
by DeathRex » Sun Feb 16, 2014 12:36 pm
- 14 Replies
- 3728 Views
- Last post by Geek
Tue Feb 18, 2014 7:02 pm
- My single ended 811
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- Tone control
by 6B4G » Wed Feb 05, 2014 11:11 am
- 8 Replies
- 2608 Views
- Last post by 6B4G
Thu Feb 06, 2014 9:59 am
- Tone control
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- I got a humdinger of hum.
by DeathRex » Wed Feb 05, 2014 9:33 pm - 1 Replies
- 896 Views
- Last post by kheper
Wed Feb 05, 2014 10:10 pm
- I got a humdinger of hum.
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- Carbon Composition Vs. Metal Oxide Resistors for PSU overhau
by Proschuno » Tue Feb 04, 2014 4:18 pm - 3 Replies
- 1067 Views
- Last post by Geek
Wed Feb 05, 2014 11:52 am
- Carbon Composition Vs. Metal Oxide Resistors for PSU overhau
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- Another amp question KB85 clone
by 6B4G » Sun Jan 26, 2014 2:08 am
- 6 Replies
- 1698 Views
- Last post by 6B4G
Wed Feb 05, 2014 11:00 am
- Another amp question KB85 clone
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- Single Ended KT 88 amplifier
by sergeykz » Fri Apr 27, 2012 7:25 am - 14 Replies
- 8593 Views
- Last post by Gingertube
Tue Feb 04, 2014 12:29 am
- Single Ended KT 88 amplifier
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- Tube repair work suggestions
by SDS-PAGE » Sun Feb 02, 2014 8:20 pm - 1 Replies
- 872 Views
- Last post by mesherm
Mon Feb 03, 2014 9:14 pm
- Tube repair work suggestions
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- Article to test power transformer current?
by Blair » Sun Jan 19, 2014 5:30 pm - 12 Replies
- 2445 Views
- Last post by Blair
Mon Feb 03, 2014 10:26 am
- Article to test power transformer current?
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- WE 437A Triode
by EWBrown » Tue Jan 28, 2014 3:05 pm - 4 Replies
- 1407 Views
- Last post by Shannon Parks
Sun Feb 02, 2014 3:59 am
- WE 437A Triode
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- 6sn7 pre amp
by 6B4G » Tue Jan 21, 2014 2:55 am
- 11 Replies
- 2883 Views
- Last post by 6B4G
Thu Jan 23, 2014 11:57 am
- 6sn7 pre amp
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- variac humming
by nyazzip » Mon Jan 20, 2014 12:41 pm - 7 Replies
- 1312 Views
- Last post by nyazzip
Tue Jan 21, 2014 12:17 pm
- variac humming
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- UTC O-10 whats it for?
by Blair » Sat Jan 18, 2014 8:27 pm - 5 Replies
- 1786 Views
- Last post by battradio
Sat Jan 18, 2014 11:58 pm
- UTC O-10 whats it for?
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- Learning something new everyday
by SDS-PAGE » Wed Jan 15, 2014 9:40 am - 1 Replies
- 873 Views
- Last post by battradio
Wed Jan 15, 2014 11:29 pm
- Learning something new everyday
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- Triode jumping ???
by hilldweller » Mon Dec 30, 2013 3:53 pm - 13 Replies
- 2357 Views
- Last post by Robert Cham
Mon Jan 13, 2014 5:52 pm
- Triode jumping ???
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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
- 1724 Views
- Last post by Blair
Thu Jan 09, 2014 12:53 pm
- Different AC ripple on either side of preamp coupling cap
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- 5933 / 807W
by EWBrown » Sun Jan 05, 2014 1:09 pm - 3 Replies
- 1413 Views
- Last post by Geek
Mon Jan 06, 2014 4:04 pm
- 5933 / 807W
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- Hickok tube tester parts and service!
by hilldweller » Sun Dec 08, 2013 11:47 am - 2 Replies
- 1439 Views
- Last post by Geek
Sat Jan 04, 2014 5:15 pm
- Hickok tube tester parts and service!
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- Multivibrator VCO Tuning help
by Proschuno » Sat Jan 04, 2014 11:30 am
- 0 Replies
- 899 Views
- Last post by Proschuno
Sat Jan 04, 2014 11:30 am
- Multivibrator VCO Tuning help
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- Choke input capacitor with tube rectifier?
by Blair » Fri Jan 03, 2014 8:53 am - 3 Replies
- 1201 Views
- Last post by AmadeusMozart
Fri Jan 03, 2014 1:20 pm
- Choke input capacitor with tube rectifier?
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- 6SL7 vs 6SU7 ?
by hilldweller » Sun Dec 22, 2013 11:21 am - 6 Replies
- 2726 Views
- Last post by hilldweller
Fri Jan 03, 2014 6:03 am
- 6SL7 vs 6SU7 ?
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- Interesting g2 feed
by AmadeusMozart » Wed Jan 01, 2014 8:00 pm
- 6 Replies
- 1594 Views
- Last post by AmadeusMozart
Thu Jan 02, 2014 3:53 pm
- Interesting g2 feed
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- Alps is canceling the blue velvet.
by DeathRex » Thu Dec 19, 2013 6:14 pm - 1 Replies
- 976 Views
- Last post by Geek
Fri Dec 20, 2013 6:23 am
- Alps is canceling the blue velvet.
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- Help identifying this tube device
by dudegibbs » Sun Dec 15, 2013 6:41 pm
- 5 Replies
- 1819 Views
- Last post by snitch56
Wed Dec 18, 2013 3:42 pm
- Help identifying this tube device
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- Vintage Sylvania Loctal Tube Advertisement
by EWBrown » Wed Aug 28, 2013 7:17 pm - 5 Replies
- 2130 Views
- Last post by EWBrown
Sun Dec 08, 2013 7:52 pm
- Vintage Sylvania Loctal Tube Advertisement
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- Great source for N.O.S. tubes
by hilldweller » Tue Dec 03, 2013 6:34 pm - 11 Replies
- 2452 Views
- Last post by hilldweller
Fri Dec 06, 2013 9:28 pm
- Great source for N.O.S. tubes
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- All tube inverter from batteries?
by Austin Translation » Wed Aug 10, 2011 10:10 am - 12 Replies
- 3609 Views
- Last post by EWBrown
Thu Dec 05, 2013 10:13 am
- All tube inverter from batteries?
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- Mic Preamp
by 6B4G » Tue Nov 19, 2013 5:41 am - 4 Replies
- 1364 Views
- Last post by 6B4G
Thu Nov 28, 2013 11:35 pm
- Mic Preamp
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- Has anyone used
by 6B4G » Sun Nov 24, 2013 3:33 am - 2 Replies
- 979 Views
- Last post by 6B4G
Sun Nov 24, 2013 9:04 am
- Has anyone used
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- 845 811A filament supply AC or DC
by DeathRex » Sat Nov 16, 2013 9:17 am
- 13 Replies
- 3366 Views
- Last post by DeathRex
Sat Nov 23, 2013 8:03 pm
- 845 811A filament supply AC or DC
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- Chassis hole for 838 813
by DeathRex » Wed Nov 20, 2013 8:24 pm - 5 Replies
- 1132 Views
- Last post by Geek
Thu Nov 21, 2013 1:08 am
- Chassis hole for 838 813
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- Troubleshooting a Dynaco AF-6
by DeathRex » Fri Nov 08, 2013 9:51 am - 2 Replies
- 1036 Views
- Last post by DeathRex
Wed Nov 20, 2013 12:13 pm
- Troubleshooting a Dynaco AF-6
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- Eico HF-20 Iron Question
by Geek » Sat Nov 16, 2013 3:27 am - 3 Replies
- 1164 Views
- Last post by battradio
Sat Nov 16, 2013 4:51 am
- Eico HF-20 Iron Question
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- Kid "safer" PP 6550 amp
1, 2by Blair » Thu Aug 29, 2013 8:46 pm - 26 Replies
- 5232 Views
- Last post by Blair
Fri Nov 15, 2013 6:05 pm
- Kid "safer" PP 6550 amp
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- easy 6v6 schematic
by Dk1975 » Tue Nov 12, 2013 3:31 pm - 11 Replies
- 3425 Views
- Last post by TomMcNally
Wed Nov 13, 2013 9:30 pm
- easy 6v6 schematic
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- Any Tube Designers Out There: Money For You
by eddiegnz1 » Tue Nov 05, 2013 8:32 pm - 4 Replies
- 1634 Views
- Last post by nyazzip
Sat Nov 09, 2013 2:20 am
- Any Tube Designers Out There: Money For You
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- making tubes
by nyazzip » Sat Nov 09, 2013 1:47 am - 0 Replies
- 930 Views
- Last post by nyazzip
Sat Nov 09, 2013 1:47 am
- making tubes
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- Tube rectifier capacitance beyond the pi filter
by Blair » Thu Nov 07, 2013 6:03 pm - 4 Replies
- 1307 Views
- Last post by hilldweller
Fri Nov 08, 2013 5:15 am
- Tube rectifier capacitance beyond the pi filter
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- EL 509 / 6KG6 output tubes w/plate cap top
1, 2 by hilldweller » Mon Oct 07, 2013 6:12 pm
- 17 Replies
- 6208 Views
- Last post by Salo
Wed Nov 06, 2013 11:50 pm
- EL 509 / 6KG6 output tubes w/plate cap top
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- 75 Watt/Channel Monoblock Custom Amp
by eddiegnz1 » Sat Nov 02, 2013 9:05 pm - 5 Replies
- 1612 Views
- Last post by Hotsauce
Wed Nov 06, 2013 5:41 am
- 75 Watt/Channel Monoblock Custom Amp
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- T - 1610 Output tube
by hilldweller » Wed Oct 30, 2013 12:15 pm - 4 Replies
- 1439 Views
- Last post by Hotsauce
Thu Oct 31, 2013 5:52 am
- T - 1610 Output tube
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- Tube Suggestions for my OPTs
by SDS-PAGE » Thu Oct 10, 2013 4:19 pm - 3 Replies
- 1060 Views
- Last post by 20to20
Fri Oct 11, 2013 6:52 am
- Tube Suggestions for my OPTs
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- 3B7 dual directed heated triode
by EWBrown » Wed Aug 14, 2013 7:17 pm - 1 Replies
- 1188 Views
- Last post by Rpmac
Thu Oct 10, 2013 10:58 am
- 3B7 dual directed heated triode
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- VT-25 vs. VT-25A
by SDS-PAGE » Mon Sep 30, 2013 10:54 am - 11 Replies
- 4013 Views
- Last post by Shannon Parks
Wed Oct 02, 2013 5:48 am
- VT-25 vs. VT-25A
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- output impedance
by 6B4G » Fri Sep 27, 2013 10:39 am - 6 Replies
- 1440 Views
- Last post by 6B4G
Wed Oct 02, 2013 2:39 am
- output impedance
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- 9-pin rectifier tubes?
by Blair » Sun Sep 29, 2013 7:38 am - 2 Replies
- 1077 Views
- Last post by Blair
Mon Sep 30, 2013 5:43 pm
- 9-pin rectifier tubes?
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