| Tubes - Showing threads 3601 to 3800 of 11633 available |
▫ Recognizing wiped out ECC's 81,82,83 ▫ 03-21-2007 01:36 AM - 2 replies
▫ So tell me.... how did YOU get into tubes?? ▫ 03-21-2007 12:30 AM - 125 replies
▫ 7189 or 7819 el84 tube? ▫ 03-20-2007 05:21 PM - 6 replies
▫ Question about Star Grounding ▫ 03-20-2007 12:39 PM - 2 replies
▫ Employment offered; breadboarding a Tube Monoblock ▫ 03-20-2007 09:48 AM - 16 replies
▫ Need help: Looking for ECF80 preamp schematic ▫ 03-20-2007 08:47 AM - 1 reply
▫ a 5AR4 after a diode bridge? what is the purpose? ▫ 03-20-2007 05:44 AM - 6 replies
▫ 807 & Pe 06/40n ▫ 03-20-2007 02:48 AM - 0 replies
▫ 12AX7, 12AU7 Substitution ▫ 03-20-2007 02:48 AM - 13 replies
▫ Board layout design ▫ 03-20-2007 02:48 AM - 7 replies
▫ 200,000 Tubes for sale in Michigan ▫ 03-19-2007 06:46 PM - 23 replies
▫ Ground scheme ▫ 03-19-2007 05:49 PM - 27 replies
▫ Help on 6L6GC Triode PP..working points.. ▫ 03-19-2007 05:19 PM - 6 replies
▫ A neat trick? ▫ 03-19-2007 04:15 PM - 7 replies
▫ Setup & Implementation of G Pimm's Self-Bias CCS ▫ 03-19-2007 08:01 AM - 12 replies
▫ Tube Preamp FM interference ▫ 03-19-2007 12:14 AM - 4 replies
▫ Parafeed 6EM7 with 2k load? ▫ 03-18-2007 11:11 PM - 2 replies
▫ Need Help on HEATHKIT W-5M Power Transformer ▫ 03-18-2007 10:50 PM - 2 replies
▫ Fully isolated oilbath transformer. ▫ 03-18-2007 04:27 PM - 28 replies
▫ small signal DHT or DHP like AVVT20/8? ▫ 03-18-2007 03:29 PM - 3 replies
▫ EL 84 Pentode Config. ▫ 03-18-2007 02:20 PM - 26 replies
▫ Amp Tubes ▫ 03-18-2007 01:41 PM - 4 replies
▫ Can I replace the 1M volume pot with a 100K one in my HK A300? ▫ 03-18-2007 01:01 PM - 0 replies
▫ what's a hum band? ▫ 03-18-2007 12:57 PM - 6 replies
▫ Tube phono pre-amp needed. ▫ 03-18-2007 02:23 AM - 28 replies
▫ U/L or triode mode on music angel amp ▫ 03-17-2007 10:47 PM - 12 replies
▫ Why do some people dislike ultralinear? ▫ 03-17-2007 09:14 PM - 259 replies
▫ Adaptive class A ▫ 03-17-2007 06:53 PM - 4 replies
▫ 6X4 Tube rectifier. ▫ 03-17-2007 06:12 PM - 13 replies
▫ AN Conquest Clone modification ▫ 03-17-2007 03:56 PM - 4 replies
▫ Beautiful tubes. ▫ 03-17-2007 03:03 PM - 59 replies
▫ Selectable EL34/6L6 Amp OT ▫ 03-17-2007 07:32 AM - 3 replies
▫ Simple circlotron amp ▫ 03-16-2007 08:21 PM - 4 replies
▫ 12AX7 how many is enough? ▫ 03-16-2007 06:45 PM - 19 replies
▫ samples of 300B in pse or pp ▫ 03-16-2007 05:54 AM - 22 replies
▫ power supply choke with a connection for AC ground? ▫ 03-16-2007 05:07 AM - 4 replies
▫ Heathkit A7E for guitar - preamp gain ▫ 03-15-2007 11:56 PM - 6 replies
▫ musical fidelity x10d schematic ▫ 03-15-2007 10:56 PM - 29 replies
▫ Pot Value ▫ 03-15-2007 10:10 PM - 16 replies
▫ Eico 666 (satan's choice) tube tester help. ▫ 03-15-2007 08:32 PM - 36 replies
▫ Finally built a subminiature guitar amp... now I need help! ▫ 03-15-2007 07:36 PM - 8 replies
▫ Minor crackling in new valves ▫ 03-15-2007 03:10 PM - 0 replies
▫ Matchless Lightning v Spitfire ▫ 03-15-2007 01:41 AM - 5 replies
▫ Aikido linestage Help Needed ▫ 03-15-2007 01:34 AM - 5 replies
▫ Scott 299A Schematic ▫ 03-15-2007 12:56 AM - 5 replies
▫ Q on PP & current mirrors ▫ 03-14-2007 10:12 PM - 13 replies
▫ Calculating PT headroom in PP class AB ▫ 03-14-2007 05:21 PM - 12 replies
▫ EL34 Failure ▫ 03-14-2007 04:15 PM - 14 replies
▫ Aikido Transformer recommendation ▫ 03-14-2007 10:51 AM - 0 replies
▫ No mains transformer B+ ? ▫ 03-14-2007 10:19 AM - 9 replies
▫ Help with horizontal mounting of 01-A and VR tubes ▫ 03-14-2007 09:36 AM - 2 replies
▫ twisted pair wiring on a tube amp ▫ 03-14-2007 03:21 AM - 15 replies
▫ Calculating SE Output Question ▫ 03-14-2007 12:49 AM - 9 replies
▫ Fixed-Bias Williamson EL34 ▫ 03-13-2007 11:01 PM - 12 replies
▫ Bogen CHB-35 Preamp Mod ▫ 03-13-2007 07:05 PM - 0 replies
▫ resistors and sonic effects? ▫ 03-13-2007 05:01 PM - 3 replies
▫ tamura F-683 pole question ▫ 03-13-2007 02:43 PM - 3 replies
▫ EC52--Plate choke--300B/45/2a3/50/EL34 SE ▫ 03-13-2007 12:14 PM - 10 replies
▫ vtl deluxe 300 mb ▫ 03-13-2007 11:17 AM - 0 replies
▫ Is SD a Schottky Diode in this schematic? ▫ 03-13-2007 11:12 AM - 15 replies
▫ Maida regulator ▫ 03-13-2007 06:27 AM - 15 replies
▫ 572B vs 845 vs 211 SE ▫ 03-13-2007 03:09 AM - 30 replies
▫ Yet Another EL84 Amp ▫ 03-13-2007 02:21 AM - 25 replies
▫ Regulator for tube pre ▫ 03-13-2007 01:49 AM - 4 replies
▫ referencing heater supply ground to B+ ▫ 03-12-2007 11:44 PM - 2 replies
▫ One Question for Hammond 1620 output transformer ▫ 03-12-2007 09:41 PM - 1 reply
▫ Bias adjustment on Dynaco ST70 ▫ 03-12-2007 07:47 PM - 1 reply
▫ To SRPP or not? ▫ 03-12-2007 01:53 PM - 2 replies
▫ Ampeg SVT-VR or SVT-CL Schematics ▫ 03-11-2007 10:20 PM - 12 replies
▫ 811 vs 811A? ▫ 03-11-2007 08:32 PM - 6 replies
▫ Bogen integrated stereo amp ▫ 03-11-2007 05:10 PM - 10 replies
▫ Audionote japan ( Kondo) Ongaku..Can I ......... Clone to DIY!!!!!!! ▫ 03-11-2007 04:49 PM - 84 replies
▫ Broken 6L6WXT tube ▫ 03-11-2007 04:13 PM - 6 replies
▫ transformer questions ▫ 03-11-2007 10:45 AM - 9 replies
▫ Microphone With A Low Impedance Tube ▫ 03-11-2007 08:31 AM - 9 replies
▫ 6EM7 Push-Pull ▫ 03-11-2007 06:21 AM - 14 replies
▫ polarity of Xicon electrolytics ▫ 03-11-2007 05:26 AM - 2 replies
▫ SE EL84 question ▫ 03-10-2007 06:06 PM - 8 replies
▫ Slightly Different guitar amp question ▫ 03-10-2007 05:17 PM - 5 replies
▫ ST-70 Power Transformer Info ▫ 03-10-2007 04:49 PM - 4 replies
▫ My new quad SED EL34 arrived ▫ 03-10-2007 02:53 PM - 1 reply
▫ isolation transformer for 50C5 amp ▫ 03-10-2007 02:34 PM - 7 replies
▫ DSP and vacuum tubes (from Analog Devices) ▫ 03-10-2007 12:16 PM - 5 replies
▫ Asymmetrical P-P OPT Primary ▫ 03-10-2007 03:48 AM - 14 replies
▫ Gated beam discriminator "amplifier" ▫ 03-10-2007 03:10 AM - 2 replies
▫ PCB Mount Loctal Socket? ▫ 03-09-2007 11:17 PM - 0 replies
▫ "Zero bias"/ driving the grid positive ▫ 03-09-2007 09:42 PM - 6 replies
▫ Low Profile Power Transformer Help ▫ 03-09-2007 05:15 PM - 5 replies
▫ Lowering Gain on an Aikido Preamp ▫ 03-09-2007 02:52 PM - 12 replies
▫ HELP; DIY PP amp - it's phase splitter, or buy Chineese. ▫ 03-09-2007 01:31 PM - 19 replies
▫ Tube vs. SS CCS... ▫ 03-09-2007 12:38 PM - 4 replies
▫ Another "I need an amp recommendation" thread ▫ 03-09-2007 08:06 AM - 21 replies
▫ i am a new one here ▫ 03-09-2007 07:16 AM - 1 reply
▫ i am new ! can you help me ▫ 03-09-2007 02:58 AM - 4 replies
▫ Pentode CCS: Would somebody check my work? ▫ 03-08-2007 08:13 PM - 5 replies
▫ PSU for 12V DC heaters ▫ 03-08-2007 05:00 PM - 15 replies
▫ 50C5 Triode strapped? ▫ 03-08-2007 04:40 PM - 4 replies
▫ homemade faceplates ▫ 03-08-2007 01:31 PM - 6 replies
▫ Can I build this? ▫ 03-08-2007 12:47 PM - 6 replies
▫ Heptode audio preamp? ECH83 ▫ 03-08-2007 11:39 AM - 22 replies
▫ E130L in Triode mode ▫ 03-08-2007 10:26 AM - 38 replies
▫ class AB2 who's using it for hifi? ▫ 03-08-2007 07:44 AM - 8 replies
▫ another mingda ▫ 03-08-2007 04:24 AM - 3 replies
▫ Obscure radio tube ▫ 03-08-2007 04:24 AM - 2 replies
▫ tube hum in Aikido ▫ 03-08-2007 03:45 AM - 3 replies
▫ equivalent input impedance ▫ 03-08-2007 02:52 AM - 17 replies
▫ 6DG6GT "Magic Amp" ▫ 03-08-2007 02:21 AM - 15 replies
▫ Solen Fast Cap vs ASC film/oils in PS ▫ 03-08-2007 12:27 AM - 1 reply
▫ Tektronix transformers ▫ 03-07-2007 07:59 PM - 1 reply
▫ *very* basic plate resistance Q ▫ 03-07-2007 07:02 PM - 7 replies
▫ Yaqin MC-5881A amplifier improvements ▫ 03-07-2007 09:53 AM - 94 replies
▫ Tube design software ▫ 03-07-2007 08:13 AM - 8 replies
▫ More wasted space ▫ 03-07-2007 03:48 AM - 9 replies
▫ Radio tube guitar preamp ▫ 03-07-2007 03:35 AM - 2 replies
▫ PC Mount Novar Socket Suppliers ▫ 03-07-2007 01:34 AM - 2 replies
▫ Planning my first project ▫ 03-06-2007 10:10 PM - 11 replies
▫ Power Transformer leakage ▫ 03-06-2007 06:50 PM - 22 replies
▫ current sensing in series with anode resistors ▫ 03-06-2007 06:44 PM - 9 replies
▫ Please recommend a 9-pin dual triode = 417A ▫ 03-06-2007 08:21 AM - 2 replies
▫ Dynaco Pas 2 ▫ 03-06-2007 07:08 AM - 13 replies
▫ Anyone have accurate charts for a KT90? ▫ 03-06-2007 06:33 AM - 1 reply
▫ Calling all Phono Preamp gurus, I'm looking for some plans ▫ 03-06-2007 12:58 AM - 11 replies
▫ Measuring Unknown Transformers ▫ 03-05-2007 08:21 PM - 3 replies
▫ Swinging choke vs std. choke in PS ▫ 03-05-2007 06:45 PM - 2 replies
▫ scope tests on a Heathkit A7E ▫ 03-05-2007 06:40 PM - 6 replies
▫ tube hum in a 6SN7 Aikido - is this weird? ▫ 03-05-2007 03:53 PM - 16 replies
▫ ECC807 preamp ▫ 03-05-2007 11:36 AM - 13 replies
▫ Ode to the 8416 ▫ 03-05-2007 06:34 AM - 2 replies
▫ CCS 10M45 in Cathode of CF Driver ▫ 03-05-2007 01:17 AM - 13 replies
▫ Audionics help ▫ 03-05-2007 12:40 AM - 5 replies
▫ what 8-pin tubes would you suggest for an aikido preamp? ▫ 03-04-2007 11:29 PM - 3 replies
▫ KT88 tubes ▫ 03-04-2007 10:28 PM - 8 replies
▫ Any one tried these transformers? ▫ 03-04-2007 09:58 PM - 0 replies
▫ Williamson 6L6 Monoblocks (Finally) ▫ 03-04-2007 08:22 PM - 20 replies
▫ Master Volume preamp.. simple? ▫ 03-04-2007 07:21 PM - 16 replies
▫ ~2 watt SET decision ▫ 03-04-2007 07:12 PM - 27 replies
▫ retube order ▫ 03-04-2007 11:21 AM - 4 replies
▫ MC Riaa preamp help/opinions please ▫ 03-04-2007 10:15 AM - 15 replies
▫ WTB Fairchild 260 transformers ▫ 03-04-2007 08:29 AM - 4 replies
▫ Peter Millet amp ▫ 03-04-2007 05:41 AM - 0 replies
▫ 1946 Gibson BR-4 Amplifier tube question ▫ 03-04-2007 03:11 AM - 1 reply
▫ Power Regulator PCB's and Aikido parts ▫ 03-03-2007 11:28 PM - 5 replies
▫ A heater wiring DOH! moment?? ▫ 03-03-2007 08:36 PM - 4 replies
▫ hum in fisher 800c phono section ▫ 03-03-2007 08:34 PM - 4 replies
▫ 9V headphone amp ▫ 03-03-2007 07:33 PM - 3 replies
▫ Aikido warm-up hum, resistor types, etc. ▫ 03-03-2007 04:18 PM - 24 replies
▫ Any of these tubes good for amps? ▫ 03-03-2007 01:50 PM - 1 reply
▫ Mini 98 El84 PP amplifier ▫ 03-03-2007 01:48 PM - 0 replies
▫ 1X6S33S=6X6S19P which one gives less impedance? ▫ 03-03-2007 11:33 AM - 4 replies
▫ schematic for 12.6 VDC heaters ▫ 03-03-2007 03:15 AM - 7 replies
▫ PP transformer for SE?? Help! ▫ 03-03-2007 02:09 AM - 8 replies
▫ Adjustable distributed load discussion ▫ 03-03-2007 01:34 AM - 160 replies
▫ 7-pin miniature tubes for audio? ▫ 03-03-2007 12:33 AM - 85 replies
▫ Tube Preamp as a Guitar Effect ▫ 03-02-2007 11:08 PM - 4 replies
▫ 6L6GT vs. EL34/6CA7 and WHY? ▫ 03-02-2007 09:31 PM - 19 replies
▫ Tube rectifier help ▫ 03-02-2007 09:23 PM - 12 replies
▫ Fender push pull amp... using one tube only.. is it dangerous? ▫ 03-02-2007 09:14 PM - 2 replies
▫ KT88 Lifetime estimation ▫ 03-02-2007 06:08 PM - 4 replies
▫ Thyratron voltage regulation ▫ 03-02-2007 09:02 AM - 2 replies
▫ switch-on, switch-off sequence for preamp/amp ▫ 03-02-2007 04:34 AM - 1 reply
▫ Found Meixing Amp schematic, sorta, would like some feedback ▫ 03-01-2007 09:42 PM - 3 replies
▫ Tube Voltage Regulator Flicker... ▫ 03-01-2007 08:06 PM - 14 replies
▫ Projects...How does one decide ? ▫ 03-01-2007 05:28 PM - 14 replies
▫ Best 6550's for the money.... ▫ 03-01-2007 04:07 PM - 12 replies
▫ SMPS and tubes ▫ 03-01-2007 10:07 AM - 2 replies
▫ Looking for Eico 1030 manual/schematic ▫ 03-01-2007 04:47 AM - 0 replies
▫ 6AS7 OTL ▫ 03-01-2007 04:06 AM - 7 replies
▫ Gary Pimm's site down? ▫ 03-01-2007 12:05 AM - 6 replies
▫ 805 + 300b Amplifier Schematic ▫ 02-28-2007 11:56 PM - 0 replies
▫ Music Angel Amplifiers ▫ 02-28-2007 09:51 PM - 16 replies
▫ MM Phono stage (kit?) for tube newbie ▫ 02-28-2007 05:28 PM - 10 replies
▫ Russian tube dealer? ▫ 02-28-2007 11:13 AM - 7 replies
▫ STA1 + amp vs K-12M ▫ 02-28-2007 06:23 AM - 12 replies
▫ cheap ebay KT88 amp ▫ 02-28-2007 04:25 AM - 38 replies
▫ Tubes at low +B... ▫ 02-27-2007 07:24 PM - 23 replies
▫ Converting a yarland amp to drive headphones ▫ 02-27-2007 01:29 PM - 0 replies
▫ Starting a component system ▫ 02-27-2007 07:01 AM - 0 replies
▫ Really elementary question about caps. ▫ 02-27-2007 04:59 AM - 4 replies
▫ Tube newbie with Scott 299B ▫ 02-27-2007 03:00 AM - 29 replies
▫ 12AV7- 5965 Vs 12AY7 ▫ 02-27-2007 02:30 AM - 23 replies
▫ PX25 tubes in a 300B Amp? ▫ 02-27-2007 12:18 AM - 1 reply
▫ help with a choke. ▫ 02-26-2007 11:18 PM - 0 replies
▫ 60Hz buzzing ▫ 02-26-2007 06:05 PM - 28 replies
▫ nuvistor bias with 18V ? ▫ 02-26-2007 04:29 PM - 13 replies
▫ ground bus for inputs on preamp - what's best? ▫ 02-26-2007 03:49 PM - 6 replies
▫ Voltage drop of various regulators in dc regulated power supply for preamp ▫ 02-26-2007 11:48 AM - 0 replies
▫ Does anyone recognise this tube amp? ▫ 02-26-2007 09:55 AM - 4 replies
▫ Entry level tube amp ▫ 02-26-2007 07:09 AM - 32 replies
▫ Anyone build/use 6BG6G? ▫ 02-26-2007 04:21 AM - 12 replies
▫ KT-77 Blues ▫ 02-26-2007 01:31 AM - 0 replies
▫ Dynaco Information MArk II Required ▫ 02-25-2007 11:24 PM - 0 replies
▫ tube test numbers - what do they mean? ▫ 02-25-2007 11:04 PM - 5 replies
▫ foolish notion, 12GN7 model? ▫ 02-25-2007 10:33 PM - 1 reply
▫ First-Timer Doubts: K-12 or Gainclone? ▫ 02-25-2007 07:17 PM - 9 replies
▫ Eico ST70 Rebuild / Upgrade ▫ 02-25-2007 04:36 PM - 6 replies
▫ More power in this ▫ 02-25-2007 09:39 AM - 8 replies
▫ Help modifiying schematic ▫ 02-25-2007 01:51 AM - 58 replies
▫ Simple Variable Tube Power Supply ▫ 02-25-2007 12:40 AM - 14 replies
▫ bias voltage vs bias current ▫ 02-24-2007 10:24 PM - 3 replies
▫ All the Bias options ▫ 02-24-2007 09:32 PM - 28 replies
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