| Tubes - Showing threads 5001 to 5200 of 11882 available |
▫ Masco MA25N repair ▫ 10-03-2006 03:28 PM - 2 replies
▫ Sunday's Project ▫ 10-03-2006 04:06 AM - 0 replies
▫ 5881- 6l6 ▫ 10-03-2006 03:23 AM - 4 replies
▫ Gas-Rectifier power supply ▫ 10-02-2006 04:22 PM - 10 replies
▫ How to get more juice out of this shunt regulator ▫ 10-02-2006 09:38 AM - 2 replies
▫ Resistors on DHT Cathode ▫ 10-02-2006 08:58 AM - 4 replies
▫ Noise floor rise on heathkit W4-AMs when power supply transformers were swapped ▫ 10-02-2006 03:54 AM - 4 replies
▫ Help me finish up this SET project (multiple questions / ramblings) ▫ 10-02-2006 03:30 AM - 1 reply
▫ This Is Cool !! ▫ 10-02-2006 02:45 AM - 10 replies
▫ output bias servo ▫ 10-01-2006 11:43 PM - 1 reply
▫ Looking for dual power triodes. ▫ 10-01-2006 09:06 PM - 26 replies
▫ Need advice selecting a 2A3 design ▫ 10-01-2006 08:33 PM - 6 replies
▫ Feedback basics ▫ 10-01-2006 07:35 PM - 33 replies
▫ tubalizer.. ▫ 10-01-2006 12:11 PM - 2 replies
▫ The 6b4g ▫ 10-01-2006 05:25 AM - 4 replies
▫ 6N6P Operating Points ▫ 09-30-2006 11:51 PM - 5 replies
▫ Lundahl+EL84 PP+concertina+input stage ▫ 09-30-2006 10:19 PM - 62 replies
▫ Help wanted for a truly loco project. (A Tube--gainclone hybrid guitar amp!) ▫ 09-30-2006 06:18 PM - 33 replies
▫ Looking for circuit of SE amp. for Eimac 100TH ▫ 09-30-2006 03:23 PM - 10 replies
▫ Counterpoint Sa-3000 Circuit Diagram ▫ 09-30-2006 12:39 PM - 3 replies
▫ compressor Faiirchild 670 DIY ▫ 09-30-2006 10:30 AM - 0 replies
▫ How much headroom for a choke---to stop it from humming? ▫ 09-30-2006 04:26 AM - 7 replies
▫ Bay Area Diy Festival ▫ 09-30-2006 04:13 AM - 4 replies
▫ Using Eagle for Tubes designs ▫ 09-30-2006 01:15 AM - 3 replies
▫ Worst that could happen? ▫ 09-29-2006 10:27 PM - 5 replies
▫ Identifying output tx. ▫ 09-29-2006 05:06 PM - 3 replies
▫ Small pre ▫ 09-29-2006 03:55 PM - 5 replies
▫ Cathode follower driver ▫ 09-29-2006 02:10 PM - 13 replies
▫ comment on this B+ supply ▫ 09-29-2006 06:35 AM - 5 replies
▫ ODD TUBES, what to look for? ▫ 09-29-2006 03:09 AM - 16 replies
▫ Aikido Headphone Amp (new board) ▫ 09-29-2006 01:22 AM - 9 replies
▫ 2A3 SE and Edcorp tranny ▫ 09-28-2006 10:00 PM - 16 replies
▫ Differential amplifier with 12AX7 ▫ 09-28-2006 02:56 PM - 5 replies
▫ Bogen Challenger CH30 Amplifier ▫ 09-28-2006 06:25 AM - 4 replies
▫ do I need to use a heatsink on a DN2540 in a B+ supply? ▫ 09-28-2006 04:51 AM - 1 reply
▫ Transformer, 10K 1:1 - which one? ▫ 09-28-2006 01:22 AM - 14 replies
▫ Where to find Blackgate Caps? ▫ 09-28-2006 12:25 AM - 6 replies
▫ Passive Pre-Amp causes huge power loss? ▫ 09-28-2006 12:09 AM - 9 replies
▫ Rubbish fluorescent tubes: Eterna Lighting (UK), GE (US) ▫ 09-27-2006 01:09 PM - 12 replies
▫ Melos TM90 ST schematic? ▫ 09-27-2006 10:56 AM - 25 replies
▫ My first tube preamplifier:) ▫ 09-27-2006 10:35 AM - 4 replies
▫ here is one for the rare tube heads...6GY8, 6EZ8 ▫ 09-27-2006 07:59 AM - 7 replies
▫ Opinions on the Conrad Johnson MV75 amplifier please. ▫ 09-26-2006 10:50 PM - 8 replies
▫ Favorite Tubes ▫ 09-26-2006 10:26 PM - 75 replies
▫ SS replacement for 83 tube ? ▫ 09-26-2006 03:06 PM - 10 replies
▫ AMC CVT 2030 Output Transformer. ▫ 09-26-2006 02:16 PM - 51 replies
▫ 6-ohm speaker to tube amp ▫ 09-26-2006 01:43 PM - 2 replies
▫ What tubes share the pinout with the 5687? ▫ 09-26-2006 04:44 AM - 4 replies
▫ SMPS for B+ discussion ▫ 09-26-2006 04:23 AM - 36 replies
▫ Building a 200W+ bass amp ▫ 09-26-2006 03:11 AM - 7 replies
▫ need help understanding voltage regulator schematic (using CCS) from Raleigh Audio ▫ 09-26-2006 01:41 AM - 21 replies
▫ SS No R No C Power Supply for Tubes ▫ 09-26-2006 01:33 AM - 1 reply
▫ FREDs? Replace 1N4003 rectifier diodes? ▫ 09-26-2006 01:02 AM - 3 replies
▫ Hot running regulated dc filament supply for aikido preamp ▫ 09-26-2006 12:43 AM - 6 replies
▫ B+ TX. overkill? ▫ 09-25-2006 07:40 PM - 2 replies
▫ 33 Power Pentode Design Pointers Needed ▫ 09-25-2006 05:22 PM - 0 replies
▫ What Wiki? ▫ 09-25-2006 02:48 PM - 4 replies
▫ help understanding updated DRD from J Elliano's site (using 6AN4 instead of 6n1p) ▫ 09-25-2006 11:07 AM - 3 replies
▫ Zen SE84TS ▫ 09-25-2006 10:35 AM - 0 replies
▫ 5687 tube ▫ 09-25-2006 10:10 AM - 5 replies
▫ Tube vs. Semiconducter rectification ▫ 09-25-2006 08:25 AM - 44 replies
▫ Bogen CHB35 Mods and Preamp ideas ▫ 09-24-2006 08:06 PM - 1 reply
▫ I Want To Build A 100+Watt per/channel Tube Poweramp ▫ 09-24-2006 07:13 PM - 29 replies
▫ Phonodude problem ▫ 09-24-2006 03:19 PM - 9 replies
▫ enjoythemusic's t-rex amp: where is the +70VDC tap? ▫ 09-24-2006 01:04 PM - 2 replies
▫ Earthing and how it effects sound. ▫ 09-24-2006 07:12 AM - 22 replies
▫ Rectifier question ▫ 09-24-2006 05:07 AM - 4 replies
▫ Help for SE Main Transformer ▫ 09-23-2006 07:59 PM - 4 replies
▫ The Surplus Store Headphone Amp ▫ 09-23-2006 05:16 PM - 4 replies
▫ 6D22S Getter Question ▫ 09-23-2006 03:08 PM - 5 replies
▫ Repair of a McIntosh MC225 power amp ▫ 09-23-2006 01:59 PM - 4 replies
▫ OPA627 with tube buffer.... ▫ 09-23-2006 12:44 PM - 2 replies
▫ Bell Stereophonic 3030 help ▫ 09-23-2006 01:05 AM - 2 replies
▫ Choosing the line stage preamp. ▫ 09-22-2006 04:40 PM - 3 replies
▫ I Need Help, Mcintosh/Marantz 7 content ▫ 09-22-2006 04:01 AM - 99 replies
▫ For 45 > 845: selecting an 9.5/ 10 Interstage ▫ 09-21-2006 10:14 PM - 0 replies
▫ How to reduce gain of this Tube Preamplifier ? ▫ 09-21-2006 05:42 PM - 5 replies
▫ looking for pp amp schematic without nfb ▫ 09-21-2006 04:20 PM - 62 replies
▫ Pseudo dual mono PS? ▫ 09-21-2006 01:42 PM - 2 replies
▫ WE404A drive 6L6 solution ▫ 09-21-2006 09:13 AM - 0 replies
▫ Looking for info on loudness control ▫ 09-21-2006 06:18 AM - 5 replies
▫ Tubes and minority carriers ▫ 09-21-2006 05:24 AM - 6 replies
▫ DIY tube preamp kit ▫ 09-21-2006 02:52 AM - 15 replies
▫ suggestions for 3 projects please ▫ 09-21-2006 02:52 AM - 0 replies
▫ M6 lamination: what is it? ▫ 09-21-2006 02:45 AM - 2 replies
▫ why is it that most tube projects uses copper sheetmetal? ▫ 09-20-2006 11:50 PM - 26 replies
▫ Sources in the Philippines / Manila ▫ 09-20-2006 04:24 PM - 27 replies
▫ Tube noise - Help ▫ 09-20-2006 12:22 PM - 15 replies
▫ Strange reverb circuit ▫ 09-20-2006 10:15 AM - 1 reply
▫ Tiny tube amp ▫ 09-20-2006 09:17 AM - 9 replies
▫ DC heating directly heated output valves ▫ 09-20-2006 04:22 AM - 5 replies
▫ Alps 250k in a Pas-3 Question ▫ 09-20-2006 03:46 AM - 2 replies
▫ 1st cap heats up... ▫ 09-20-2006 01:57 AM - 11 replies
▫ RCA VR Tube engineering data ▫ 09-19-2006 06:47 PM - 7 replies
▫ dropping heater voltage ▫ 09-19-2006 02:46 PM - 17 replies
▫ Please Help with Sound Valves M40 Monoblock Bias Adjustment Procedure!!! ▫ 09-19-2006 09:37 AM - 0 replies
▫ Old Sony SE OPT's /w 600r tap... cathode feedback maybe? ▫ 09-19-2006 03:15 AM - 23 replies
▫ Which is the poor man 45 tube? ▫ 09-19-2006 01:38 AM - 4 replies
▫ Audio Note Low Gain Quest Power Amplifier ▫ 09-18-2006 11:55 PM - 0 replies
▫ Quad II: Which resistors? ▫ 09-18-2006 09:22 PM - 5 replies
▫ Designing a preamp with two tubes ▫ 09-18-2006 09:02 PM - 6 replies
▫ ARC Classic 30 problem ▫ 09-18-2006 01:42 PM - 3 replies
▫ Why does the 6AS7 have such high Miller capacitance ? ▫ 09-18-2006 01:27 PM - 11 replies
▫ Driving an unusal Z=1k5-2k input spring reverb w/o tranny ▫ 09-18-2006 12:30 PM - 5 replies
▫ serching 5A6 beam power pentode data/curves/schematics for AF practice amp ▫ 09-18-2006 12:15 PM - 1 reply
▫ HPHV regulator measurement ▫ 09-18-2006 07:51 AM - 3 replies
▫ DHT Topology Comparison Question ▫ 09-18-2006 05:04 AM - 3 replies
▫ Secondary Tap of Power Transformer? ▫ 09-18-2006 03:55 AM - 4 replies
▫ Soft-clipping Circuit/tubecad ▫ 09-18-2006 01:34 AM - 0 replies
▫ lack of bass in a 6h30 design ▫ 09-17-2006 07:46 PM - 3 replies
▫ Difference between two novals ▫ 09-17-2006 02:56 PM - 3 replies
▫ C3g ▫ 09-17-2006 01:58 PM - 2 replies
▫ All Tube Stereo power amplifier ▫ 09-17-2006 12:25 PM - 11 replies
▫ what gas VR tube? ▫ 09-17-2006 07:18 AM - 1 reply
▫ KT88 schematic ▫ 09-16-2006 09:07 PM - 18 replies
▫ Help me understand the topologies here... ▫ 09-16-2006 08:41 PM - 8 replies
▫ Finished my Amp, Need to build a PS ▫ 09-16-2006 05:46 PM - 4 replies
▫ Push-Pull driver stage? ▫ 09-16-2006 04:26 PM - 12 replies
▫ Floating the heaters ▫ 09-16-2006 06:38 AM - 2 replies
▫ Replacing Power Transformer ▫ 09-16-2006 12:53 AM - 6 replies
▫ When car audio & tubes collide... ▫ 09-15-2006 09:36 PM - 1 reply
▫ 6N6P and 6SN7 Operating point suggestions ▫ 09-15-2006 07:34 PM - 2 replies
▫ NOS pF capacitors voltage rating? ▫ 09-15-2006 12:02 PM - 10 replies
▫ Tubes in Vietnam ▫ 09-15-2006 04:59 AM - 5 replies
▫ Passive pre order? ▫ 09-15-2006 04:50 AM - 3 replies
▫ layout help ▫ 09-15-2006 02:18 AM - 11 replies
▫ junkbox amp help ▫ 09-15-2006 01:37 AM - 5 replies
▫ required specs of an input step up transformer, into a 45, to allow it drive an 845 ▫ 09-14-2006 10:26 PM - 18 replies
▫ 6as7 SRPP output stage ▫ 09-14-2006 03:07 PM - 4 replies
▫ Bias range and selenium rectifier ▫ 09-14-2006 02:59 PM - 20 replies
▫ PSE EL34 - valve rectification question ▫ 09-14-2006 02:19 PM - 8 replies
▫ OTL's and aircraft transformers ▫ 09-14-2006 02:19 PM - 5 replies
▫ A 2a3 Amplifier ▫ 09-14-2006 04:29 AM - 19 replies
▫ James Transformer BS ▫ 09-14-2006 04:15 AM - 10 replies
▫ Plate Voltage on 12ax7a ▫ 09-14-2006 02:27 AM - 6 replies
▫ Parallel Triodes and Load Lines ▫ 09-14-2006 01:53 AM - 2 replies
▫ Steve Bench OTL ▫ 09-13-2006 06:26 PM - 9 replies
▫ High power P-P EL34/6550/KT88 amp suggestions ▫ 09-13-2006 03:07 PM - 5 replies
▫ Stepped attenuators - break before make? ▫ 09-13-2006 12:25 PM - 6 replies
▫ audionote 144 OPT comment pls... ▫ 09-13-2006 10:02 AM - 0 replies
▫ KT88 and Hammond Transformer Schematics ▫ 09-13-2006 05:57 AM - 79 replies
▫ How do I know that my measured AC voltage is precise? ▫ 09-13-2006 05:10 AM - 13 replies
▫ 6C33B-C push pull with output transformer ▫ 09-12-2006 08:39 PM - 17 replies
▫ EL84 grid voltage? ▫ 09-12-2006 08:20 PM - 13 replies
▫ seperate power supply? ▫ 09-12-2006 04:06 PM - 3 replies
▫ Mysterious tektronix power supply ▫ 09-12-2006 03:50 PM - 4 replies
▫ tube amp subwoofer hum problem ▫ 09-12-2006 08:46 AM - 3 replies
▫ How to test transformer's current rating? ▫ 09-12-2006 05:06 AM - 6 replies
▫ Death/Black Metal sound on Crate 6212 ▫ 09-11-2006 07:16 PM - 22 replies
▫ 4654/4699 pentodes ▫ 09-11-2006 05:04 PM - 7 replies
▫ Output tubes on a Marshall JCM900 ▫ 09-11-2006 02:55 PM - 0 replies
▫ vacuum tube logic gate ▫ 09-11-2006 01:53 PM - 4 replies
▫ Screen current ▫ 09-11-2006 07:51 AM - 0 replies
▫ Any tube-sleuths out there know who made these Daystrom tubes? ▫ 09-11-2006 05:25 AM - 3 replies
▫ With this meter reading, enough to know Fuse is the culprit? ▫ 09-11-2006 02:02 AM - 3 replies
▫ need comments on amp design ▫ 09-10-2006 08:03 PM - 0 replies
▫ KEF/Celestion speakers for tube use... ▫ 09-10-2006 07:51 PM - 1 reply
▫ Another cheap fix - MOT as plate choke. ▫ 09-10-2006 07:00 PM - 11 replies
▫ XAM Mark II B ▫ 09-10-2006 06:14 PM - 2 replies
▫ How to test voltages on secondaries? ▫ 09-10-2006 03:09 PM - 5 replies
▫ Audio innovation L1 valve replacement ▫ 09-10-2006 12:07 AM - 3 replies
▫ Is this in-rush current? ▫ 09-09-2006 09:08 PM - 6 replies
▫ TETRODE amplifiers ▫ 09-09-2006 04:32 PM - 28 replies
▫ Audio Shop Eifl Corporation ▫ 09-09-2006 09:57 AM - 4 replies
▫ 6sn7 Buffer ▫ 09-09-2006 05:54 AM - 12 replies
▫ Marantz 8b operating voltages ▫ 09-09-2006 01:41 AM - 17 replies
▫ amplifier with 813 valves ▫ 09-09-2006 01:21 AM - 4 replies
▫ Changing plate resistor in live circuitry. ▫ 09-08-2006 08:33 PM - 3 replies
▫ 2xEL34 vs. 4xEL84 vs. 2x6L6 vs. 4x6V6 ▫ 09-08-2006 07:08 PM - 15 replies
▫ KT88 drivers ▫ 09-08-2006 08:37 AM - 3 replies
▫ Simple Hybrid SE EL84 UL amp.. comments please. ▫ 09-08-2006 04:33 AM - 2 replies
▫ max input impedance for // el84's and other ? ▫ 09-08-2006 04:08 AM - 4 replies
▫ Please Help.. PCL81 ▫ 09-08-2006 01:47 AM - 0 replies
▫ Some troubles with PSUD. A little help please ! ▫ 09-07-2006 07:11 PM - 10 replies
▫ Why D getters? ▫ 09-07-2006 05:23 AM - 5 replies
▫ Help me information of the tubes? ▫ 09-07-2006 03:55 AM - 11 replies
▫ Questions about this line stage ▫ 09-07-2006 03:39 AM - 4 replies
▫ 5Z4P rectifier tube question ▫ 09-06-2006 11:04 PM - 3 replies
▫ Need help from Aikido builder ▫ 09-06-2006 07:46 AM - 5 replies
▫ AikesiÙ_»úel34Œ¤ÕÒ‡øÍâ´úÀí£¬¿ÉÒÔËÍһ̨£¡£¡ ▫ 09-06-2006 05:41 AM - 2 replies
▫ Direct heating triodes are really better? ▫ 09-05-2006 10:55 PM - 22 replies
▫ Audio Reality is back, in digital format ▫ 09-05-2006 07:35 PM - 1 reply
▫ Stoetkit 25W integrated amp ▫ 09-05-2006 09:27 AM - 6 replies
▫ Switchable stages with Tubelab’s hybrid MOSFET/ 845 SE amp? ▫ 09-05-2006 07:56 AM - 0 replies
▫ Tube Pre Amplifier for SEWA 7 Watt ClassA MOSFET ▫ 09-05-2006 07:53 AM - 261 replies
▫ Michaelson Audio Odysseus Problem. ▫ 09-05-2006 06:42 AM - 46 replies
▫ ASC metal can polypro caps: ground the metal can to AC ground? ▫ 09-05-2006 04:13 AM - 10 replies
▫ anyone living in australia (hopefully adelaide) willing to lend their puncher/bit? ▫ 09-05-2006 04:07 AM - 0 replies
▫ ReinoutdV ▫ 09-04-2006 07:38 PM - 4 replies
▫ Priboj amp schematic ▫ 09-04-2006 05:08 PM - 4 replies
▫ EL84 in ultra-linear mode ▫ 09-04-2006 11:37 AM - 8 replies
▫ internal shielding ▫ 09-04-2006 07:46 AM - 4 replies
▫ RIAA: what does it stand for? ▫ 09-04-2006 06:30 AM - 2 replies
▫ Socket Mounting Rings ▫ 09-04-2006 05:22 AM - 5 replies
▫ heathkit sa2 - new question ▫ 09-04-2006 03:32 AM - 8 replies
▫ RCA R35, 39 & 57 Terminal Usage... ▫ 09-03-2006 06:50 PM - 1 reply
▫ 45 into an 845 parafeed circuit ▫ 09-03-2006 12:18 PM - 14 replies
▫ Tubes power supply 220 t0 300V ? ▫ 09-03-2006 10:31 AM - 2 replies
▫ ripple values in B+ supply ▫ 09-02-2006 09:11 PM - 3 replies
▫ Capacitors and tubes for AA5? ▫ 09-02-2006 06:32 PM - 3 replies
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