| Tubes - Showing threads 9601 to 9800 of 11907 available |
▫ Kepco 615B Bench Supply pix ▫ 05-01-2004 01:20 AM - 1 reply
▫ Standart gains and voltage levels for standart audio eq ▫ 04-30-2004 06:16 PM - 0 replies
▫ How do I measure OPT impedance? ▫ 04-30-2004 03:59 PM - 1 reply
▫ Using TFA 204 transformers for SE EL84? ▫ 04-30-2004 02:16 PM - 2 replies
▫ Help on 311-CH triode tube ▫ 04-30-2004 11:44 AM - 1 reply
▫ Shots of my GG pre amp!! ▫ 04-30-2004 10:50 AM - 4 replies
▫ 6C45Pi Microphone Preamp ▫ 04-30-2004 01:21 AM - 4 replies
▫ cf topology lessons... pls help ▫ 04-29-2004 11:26 AM - 21 replies
▫ Father's Cousin Louis's vintage 1920+ collection pictures! ▫ 04-29-2004 05:41 AM - 5 replies
▫ Tube Newbie needs help ▫ 04-29-2004 02:09 AM - 2 replies
▫ Need help ▫ 04-29-2004 12:02 AM - 10 replies
▫ Zytron Tubes ▫ 04-28-2004 06:59 PM - 1 reply
▫ Hapi2 Preamp ▫ 04-28-2004 03:32 PM - 0 replies
▫ Svetlana Cryo Tubes For Wave 8's ▫ 04-28-2004 03:04 PM - 0 replies
▫ Audio Note Preamp Circuit a good guess... ▫ 04-28-2004 02:25 PM - 4 replies
▫ Which one is the better design? ▫ 04-28-2004 01:04 PM - 2 replies
▫ Lab Power Supply for Glass Audio ▫ 04-28-2004 11:59 AM - 0 replies
▫ A joke? ▫ 04-27-2004 07:01 PM - 8 replies
▫ Need Advice on new Amp ▫ 04-27-2004 03:04 PM - 1 reply
▫ Using the 7591 or 7868 ▫ 04-27-2004 01:09 PM - 10 replies
▫ Schematic of Audio Research VT 100 ▫ 04-26-2004 09:13 PM - 1 reply
▫ Hermetically sealed Oil Filled resistors! ▫ 04-26-2004 05:23 PM - 14 replies
▫ Pre Amp schematic Audio Note M1 ▫ 04-26-2004 04:50 PM - 0 replies
▫ opt impedance ▫ 04-26-2004 07:20 AM - 7 replies
▫ Schematic for Bogen DB130 ? ▫ 04-25-2004 08:55 PM - 3 replies
▫ SRPP Help Needed ▫ 04-25-2004 07:21 PM - 12 replies
▫ Schematic for Bogen DB130 ? ▫ 04-25-2004 06:02 PM - 0 replies
▫ Hot tube ▫ 04-25-2004 04:16 PM - 3 replies
▫ 6L6 Design Phase ▫ 04-25-2004 08:46 AM - 27 replies
▫ High Power Single Ended Amplifier Club ▫ 04-25-2004 07:31 AM - 4 replies
▫ Suggestions please.. ▫ 04-25-2004 06:46 AM - 1 reply
▫ These are the best looking tube amps I have ever seen ▫ 04-24-2004 11:17 PM - 21 replies
▫ Sylvania News ▫ 04-24-2004 06:02 PM - 14 replies
▫ Will this work? "Mixed" 300B PPP IT ▫ 04-24-2004 03:08 PM - 4 replies
▫ Whats a Good 6L6 circuit? ▫ 04-24-2004 10:24 AM - 34 replies
▫ Guitar Tube Preamp ▫ 04-24-2004 06:27 AM - 5 replies
▫ Circlotron amps ▫ 04-23-2004 10:06 PM - 7 replies
▫ Mods on leak stereo 20 ▫ 04-23-2004 09:29 PM - 22 replies
▫ When do the tubes have a fever? ▫ 04-23-2004 03:18 PM - 9 replies
▫ psu problem ▫ 04-23-2004 02:43 PM - 11 replies
▫ earthing ▫ 04-23-2004 11:22 AM - 2 replies
▫ 6V6 SET amp with 6SN7 driver ▫ 04-23-2004 12:47 AM - 37 replies
▫ 6n1p pre with active load ▫ 04-22-2004 07:43 PM - 7 replies
▫ buy tubes in the EU ▫ 04-22-2004 04:47 PM - 12 replies
▫ Neutral AC wave on O'scope ▫ 04-22-2004 01:02 AM - 20 replies
▫ Running power to tubes so as not to effect the audio signal ▫ 04-21-2004 04:38 PM - 7 replies
▫ el34 se schematic opinion ▫ 04-21-2004 12:16 PM - 3 replies
▫ Ef86 ▫ 04-21-2004 12:04 PM - 36 replies
▫ A Rimbaldi amp? ▫ 04-21-2004 08:19 AM - 3 replies
▫ SE or PP? ▫ 04-20-2004 10:16 PM - 16 replies
▫ PP 807's ▫ 04-20-2004 08:16 PM - 4 replies
▫ CCS loading first stage of DC coupled driver ▫ 04-20-2004 01:09 PM - 1 reply
▫ Search for a pre (RIAA+LINE+TUNER)with 12au7-12ax7. ▫ 04-19-2004 08:50 PM - 0 replies
▫ Film cap's ▫ 04-19-2004 05:58 PM - 6 replies
▫ Goertz: amp killer? or where to fix my Audio Research VSi55? ▫ 04-19-2004 04:49 PM - 12 replies
▫ help finding a good amp project? ▫ 04-18-2004 03:27 AM - 6 replies
▫ Yet another valve pre, comments?! ▫ 04-17-2004 06:22 PM - 17 replies
▫ Source for round and/or square transformer covers ?? ▫ 04-17-2004 04:34 PM - 2 replies
▫ Ac30 ▫ 04-17-2004 11:12 AM - 21 replies
▫ Some questions! ▫ 04-17-2004 01:16 AM - 3 replies
▫ filament source connection to DHT ▫ 04-16-2004 01:45 PM - 7 replies
▫ Use tubes for 2000V. power supply, ▫ 04-16-2004 01:30 AM - 1 reply
▫ mu / srpp / or CF? ▫ 04-16-2004 01:14 AM - 9 replies
▫ dB into voltage gain???? ▫ 04-16-2004 12:49 AM - 6 replies
▫ Building a Tube Mic Pre ▫ 04-15-2004 10:09 PM - 21 replies
▫ Negative Voltage using tube rectifier? ▫ 04-15-2004 05:47 PM - 5 replies
▫ Reichert info ▫ 04-15-2004 05:35 PM - 2 replies
▫ really basic question ▫ 04-15-2004 04:22 AM - 6 replies
▫ Has anybody built 6BG6 or similar OTL amp? ▫ 04-14-2004 08:06 AM - 2 replies
▫ Old OP Transformer ▫ 04-14-2004 04:16 AM - 5 replies
▫ Need Advice, 820vct tranny? ▫ 04-14-2004 02:15 AM - 20 replies
▫ 811a Tube Cap Size ▫ 04-14-2004 01:08 AM - 2 replies
▫ need help with (now) not-working amp ▫ 04-13-2004 09:15 PM - 5 replies
▫ How about this 12au7 pre? ▫ 04-13-2004 07:27 PM - 2 replies
▫ SV811-3 SE : Lots of questions... ▫ 04-13-2004 06:31 PM - 11 replies
▫ Criticise please! ▫ 04-13-2004 06:13 PM - 12 replies
▫ 6n3p = ECC85 ??? ▫ 04-13-2004 07:41 AM - 11 replies
▫ Any website reference for diy Audio Research REFERENCE amp and Manley Studio amp ▫ 04-13-2004 06:58 AM - 4 replies
▫ grid bias ▫ 04-13-2004 04:31 AM - 2 replies
▫ 12AT7 poweramp specs? ▫ 04-13-2004 02:55 AM - 35 replies
▫ valve pre amp ▫ 04-13-2004 12:01 AM - 4 replies
▫ what is the simplest possible triode amp? ▫ 04-12-2004 07:38 PM - 20 replies
▫ poweramp topology ▫ 04-12-2004 07:05 PM - 9 replies
▫ limits in transient time ▫ 04-12-2004 07:38 AM - 1 reply
▫ OPT Design ▫ 04-12-2004 04:22 AM - 19 replies
▫ Would this work ▫ 04-11-2004 10:07 PM - 5 replies
▫ manley pre schematic ▫ 04-11-2004 08:01 PM - 0 replies
▫ Heathkit FM3A ▫ 04-11-2004 06:55 PM - 0 replies
▫ Aleph-type CCS as plate load? ▫ 04-11-2004 06:28 PM - 18 replies
▫ Talbot Wright's Williamson mod (Heathkit W3-AM) ▫ 04-11-2004 12:17 PM - 0 replies
▫ Conrad-Johnson PV6 Preamp ▫ 04-11-2004 11:49 AM - 3 replies
▫ Mc275 opt manual rewinding ▫ 04-11-2004 10:10 AM - 51 replies
▫ Newbie asking help ▫ 04-11-2004 08:12 AM - 11 replies
▫ converting EF86 to take 12AX7 ▫ 04-11-2004 12:13 AM - 24 replies
▫ B&K 650 tube tester not working, need help ▫ 04-10-2004 06:52 PM - 1 reply
▫ 5814/12AU7 Preamp? ▫ 04-10-2004 04:57 PM - 15 replies
▫ Grounded Grid pre amp-- help please ▫ 04-10-2004 01:46 PM - 10 replies
▫ Tube output indicator - EM84 or 6AF6G ▫ 04-09-2004 09:46 PM - 17 replies
▫ suggest circuit with gain of 60 ▫ 04-09-2004 08:52 PM - 17 replies
▫ ready to mod the hell out of my asl wave 8's ▫ 04-09-2004 07:45 PM - 9 replies
▫ My First DIY - need big help! ▫ 04-09-2004 07:35 PM - 3 replies
▫ rectifier tube question ▫ 04-09-2004 06:06 PM - 3 replies
▫ Newbie with Tannoy grfs, helpme to choice a good amp to them. ▫ 04-09-2004 01:55 PM - 9 replies
▫ Mullard CV 4109 tube ▫ 04-09-2004 01:14 PM - 4 replies
▫ Pre PS Improvements? ▫ 04-09-2004 02:26 AM - 24 replies
▫ 6n7gt+300b ▫ 04-08-2004 11:14 PM - 17 replies
▫ Calculating DC coupled Single Ended Valve Amplifiers - Part #1 ▫ 04-08-2004 12:35 PM - 30 replies
▫ 12ax7 preamp,need help. ▫ 04-08-2004 07:51 AM - 13 replies
▫ tube datasheets and amp sch ▫ 04-08-2004 07:31 AM - 1 reply
▫ How to check output transformers ? ▫ 04-07-2004 06:38 PM - 2 replies
▫ Filament of a 6AS7G ▫ 04-07-2004 06:30 PM - 7 replies
▫ triode=>pentode ▫ 04-07-2004 05:34 PM - 3 replies
▫ noob PSUD question... ▫ 04-07-2004 04:00 PM - 8 replies
▫ Detailed and Dry. ▫ 04-07-2004 11:21 AM - 24 replies
▫ Audion sterling phono stage - a good base for future upgrades? ▫ 04-07-2004 09:15 AM - 9 replies
▫ First Try on Tube Preamp ▫ 04-07-2004 06:54 AM - 37 replies
▫ EL34 in class AB2 triode mode push-pull? ▫ 04-07-2004 06:19 AM - 24 replies
▫ Heater Voltage Range, Hi or Low ▫ 04-07-2004 05:34 AM - 22 replies
▫ Donor H/K A224 Amp ▫ 04-07-2004 05:09 AM - 3 replies
▫ market for used tubes? ▫ 04-06-2004 10:15 PM - 3 replies
▫ Voltage Doubler Problem ▫ 04-06-2004 07:02 PM - 10 replies
▫ 6922 as a CCS, a question ? ▫ 04-06-2004 06:02 PM - 12 replies
▫ ALPS Pot ▫ 04-06-2004 12:44 PM - 5 replies
▫ Tube parameter ? ▫ 04-06-2004 11:56 AM - 2 replies
▫ tube life ▫ 04-06-2004 03:36 AM - 5 replies
▫ 7591A Tubes for sale? ▫ 04-05-2004 09:42 PM - 0 replies
▫ Restoring tired tubes ▫ 04-05-2004 07:40 PM - 10 replies
▫ My Bottlehead Tube Rig is done...for now ▫ 04-05-2004 06:30 PM - 9 replies
▫ Hammond Transformers ▫ 04-05-2004 02:47 PM - 0 replies
▫ Tube Headphone Amp / Preamp Opinions ▫ 04-05-2004 08:10 AM - 3 replies
▫ Looking to dip my toe into tubes: Any ideas for a Newbie Headphone Amp? ▫ 04-04-2004 02:52 PM - 0 replies
▫ Kenwood KW-70 Receiver ▫ 04-04-2004 02:39 PM - 23 replies
▫ Tube output buffer for DAC....needs advice! ▫ 04-04-2004 10:48 AM - 0 replies
▫ The Crackerbox Amp ▫ 04-03-2004 01:21 PM - 4 replies
▫ Antique Sound Lab MG-SPM25 Output Transformers ▫ 04-03-2004 12:49 PM - 0 replies
▫ el84 quad schematic..something is wrong...? ▫ 04-03-2004 10:33 AM - 15 replies
▫ really dumb question about SE 6bq5 operating point (triode) ▫ 04-03-2004 04:53 AM - 5 replies
▫ 6n7gt ▫ 04-03-2004 02:02 AM - 7 replies
▫ EE-Zee & Chee-Zee bias and offset adjustment idea ▫ 04-02-2004 11:16 PM - 0 replies
▫ Preamp Selection ▫ 04-02-2004 07:32 PM - 1 reply
▫ High frecuency oscillation when moving volume pot ▫ 04-02-2004 11:02 AM - 43 replies
▫ Choke load - how to plot loadline? ▫ 04-02-2004 09:11 AM - 4 replies
▫ Audio Research LS2 ▫ 04-02-2004 07:49 AM - 2 replies
▫ Any Tube DIYers in Bay Area ▫ 04-02-2004 02:21 AM - 4 replies
▫ 6DJ8 preamp voltage? ▫ 04-01-2004 11:17 PM - 1 reply
▫ Diodes in Grid-Cathode Circuit ▫ 04-01-2004 10:47 PM - 11 replies
▫ To regulate or not? ▫ 04-01-2004 10:44 PM - 4 replies
▫ Odd tube behavior ▫ 04-01-2004 05:00 PM - 6 replies
▫ output txfr on cathode? ▫ 04-01-2004 02:50 AM - 5 replies
▫ tube preamp w/ XLR? ▫ 03-31-2004 08:35 PM - 7 replies
▫ ECC88 and PCC88 filament voltages ▫ 03-31-2004 06:30 PM - 5 replies
▫ Best tube choice for 1st SET project? ▫ 03-31-2004 02:58 PM - 2 replies
▫ Croft Vitale ▫ 03-31-2004 09:02 AM - 1 reply
▫ at last, amp finnished ▫ 03-31-2004 08:01 AM - 14 replies
▫ Silver micas as coupling caps? ▫ 03-31-2004 05:48 AM - 43 replies
▫ Valve-Heart Recording Studio ▫ 03-31-2004 05:22 AM - 4 replies
▫ Prototyping ( Breadboard ) Chassis Ideas and Suggestions ▫ 03-30-2004 10:16 PM - 4 replies
▫ old tubes ▫ 03-30-2004 10:08 PM - 8 replies
▫ where to place extra filter cap ▫ 03-30-2004 05:56 PM - 2 replies
▫ Troubleshooting a 6n1p linestage. ▫ 03-30-2004 02:54 PM - 5 replies
▫ 300BSE series ▫ 03-30-2004 12:49 PM - 3 replies
▫ Which triode is the best for preamp? ▫ 03-30-2004 06:39 AM - 6 replies
▫ AV8 and AV15 Vaic tubes ▫ 03-29-2004 07:35 PM - 1 reply
▫ Refridgerator trying to kill my Valve Amp ▫ 03-29-2004 03:26 PM - 8 replies
▫ When is capacitance making AC ripple a non-issue in B+ PS's? ▫ 03-29-2004 03:23 PM - 6 replies
▫ Quicksilver Bias Problem ▫ 03-28-2004 02:33 PM - 13 replies
▫ Looking for good book about phase split ▫ 03-28-2004 02:15 PM - 2 replies
▫ speaker protection fuse in Transcendent T8 ▫ 03-28-2004 12:44 PM - 1 reply
▫ Shuguang Tube Factory(pics) ▫ 03-28-2004 03:46 AM - 8 replies
▫ "Pentodes for Dummies" needed. ▫ 03-27-2004 08:17 PM - 3 replies
▫ schematic for audio research classic 120 amps? ▫ 03-27-2004 06:43 PM - 5 replies
▫ Bouncing Ground ▫ 03-27-2004 02:26 AM - 5 replies
▫ Testing response.... ▫ 03-26-2004 10:53 PM - 18 replies
▫ Impedance selection ▫ 03-26-2004 09:24 PM - 1 reply
▫ Heater To Cathode Potential ▫ 03-26-2004 07:19 PM - 19 replies
▫ uneven wound 50w OT 2 ideas...? ▫ 03-26-2004 06:41 PM - 13 replies
▫ 6B4G Amplifier Questions ▫ 03-26-2004 03:01 PM - 33 replies
▫ grounding heater/filament center ▫ 03-26-2004 02:14 PM - 6 replies
▫ Do I lose power when parafeeding? ▫ 03-26-2004 01:47 PM - 2 replies
▫ no ground problem ▫ 03-26-2004 10:35 AM - 2 replies
▫ Tube amp project ▫ 03-26-2004 10:13 AM - 6 replies
▫ bi-amping with gainclone + tubeamp ▫ 03-25-2004 05:54 PM - 3 replies
▫ Plitron/Vanderveen/KT88 Tube rectifier recommendation for 230mA? ▫ 03-25-2004 02:08 PM - 13 replies
▫ proposed 833 design ▫ 03-25-2004 12:42 PM - 0 replies
▫ Thyratron Circuit ▫ 03-25-2004 05:47 AM - 10 replies
▫ different phase invertors ▫ 03-24-2004 06:25 PM - 3 replies
▫ Tetrode or Pentode? / Tube info ▫ 03-24-2004 06:15 PM - 15 replies
▫ RECTIFIERLESS, is that possible? ▫ 03-24-2004 01:57 PM - 30 replies
▫ About high voltage regulated power supplies ▫ 03-24-2004 07:33 AM - 4 replies
▫ Stupid question about capacitors ▫ 03-24-2004 04:29 AM - 7 replies
▫ Time advanced error feedback correction ▫ 03-24-2004 02:22 AM - 25 replies
▫ My first tube amp ▫ 03-23-2004 09:27 PM - 20 replies
▫ copland 504 ▫ 03-23-2004 08:55 PM - 0 replies
▫ 6D22S Damper Tubes ▫ 03-23-2004 07:11 PM - 15 replies
▫ resuscitating 60+ year old radio ▫ 03-23-2004 06:12 PM - 13 replies
▫ 6C45 in a phono amp? looks like this might be hot. ▫ 03-23-2004 09:51 AM - 0 replies
▫ quality of power supply ▫ 03-23-2004 08:08 AM - 3 replies
▫ Gassy Tube ▫ 03-22-2004 12:37 PM - 22 replies
▫ transformer coupling, magnetic amplifiers, grid leak current ▫ 03-22-2004 07:38 AM - 9 replies
▫ How low 6922/ECC88 can go? ▫ 03-22-2004 03:16 AM - 31 replies
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