| Tubes - Showing threads 401 to 600 of 11883 available |
▫ Bunch of questions regarding plate CCS and some else. ▫ 08-02-2008 05:08 PM - 12 replies
▫ Tube Store in Washington DC (6C33C Triode Buy Where??) ▫ 08-02-2008 02:13 PM - 14 replies
▫ Scott 399 Receiver Schematics? ▫ 08-02-2008 04:55 AM - 2 replies
▫ Need help with 6l6GC choices ▫ 08-01-2008 10:28 PM - 19 replies
▫ Need Hammond/Everett drawings. ▫ 08-01-2008 09:49 PM - 0 replies
▫ 6V6 PP-based Baby Huey/Mullard inspired design needed... ▫ 08-01-2008 12:56 PM - 13 replies
▫ Ecf80 ▫ 08-01-2008 11:39 AM - 3 replies
▫ Please Explain difference Mono vs Push Pull vs Single End etc ▫ 08-01-2008 07:00 AM - 11 replies
▫ VU Meters ▫ 08-01-2008 02:02 AM - 15 replies
▫ diy preamps, bottlehead, decware.... ▫ 08-01-2008 01:30 AM - 3 replies
▫ Power supply choke help needed ▫ 08-01-2008 12:26 AM - 4 replies
▫ LED cathode biasing in push-pull input stage ▫ 07-31-2008 09:36 PM - 14 replies
▫ applying fixed bias to cathode followers ▫ 07-31-2008 08:21 PM - 5 replies
▫ Battieries for B+ ▫ 07-31-2008 05:31 PM - 14 replies
▫ Put amp in chassis, then, right channel doesn't work! ▫ 07-31-2008 04:44 PM - 11 replies
▫ hammond transformers? ▫ 07-31-2008 03:16 PM - 12 replies
▫ Two Rectifiers, One transformer ▫ 07-31-2008 10:53 AM - 9 replies
▫ Cool problem with Marshall TSL!!! ▫ 07-31-2008 10:36 AM - 2 replies
▫ Tubes currently in production ▫ 07-31-2008 10:03 AM - 4 replies
▫ Rachel's Corner - Shuguang ▫ 07-31-2008 07:28 AM - 3 replies
▫ Small 50C5 Amp improvements ▫ 07-31-2008 05:23 AM - 7 replies
▫ Low voltage pentode? ▫ 07-31-2008 04:10 AM - 1 reply
▫ TX distortion ▫ 07-30-2008 11:59 PM - 2 replies
▫ DIY U-L curves ▫ 07-30-2008 11:19 PM - 10 replies
▫ Transformer spacing ▫ 07-30-2008 11:08 PM - 8 replies
▫ Covers for budget output transformers ▫ 07-30-2008 10:59 PM - 8 replies
▫ Correct for bipolar voltage doubler? ▫ 07-30-2008 08:50 PM - 8 replies
▫ Source for 100uf motor run cap. ▫ 07-30-2008 07:22 PM - 3 replies
▫ magnavox 185aa with 4-6v6 ▫ 07-30-2008 02:48 PM - 3 replies
▫ Yaqin 300B re-biasing ▫ 07-30-2008 01:22 PM - 4 replies
▫ Diy Line Amp Jp-80 ▫ 07-30-2008 12:41 PM - 1 reply
▫ Line Amp Diy 6j1 ▫ 07-30-2008 12:41 PM - 1 reply
▫ Diy Line Amp£_£_6sn7 ▫ 07-30-2008 12:41 PM - 1 reply
▫ Diy Line Amp 5670 ▫ 07-30-2008 12:41 PM - 1 reply
▫ Diy Line Amp Audio Note M7 ▫ 07-30-2008 12:41 PM - 1 reply
▫ Diy Line Amp Cat Sl-1 ▫ 07-30-2008 12:41 PM - 3 replies
▫ Diy Line Amp Malanz 7 ▫ 07-30-2008 12:41 PM - 1 reply
▫ Diy Line Amp Htm ▫ 07-30-2008 12:41 PM - 1 reply
▫ Quality difference between output transformers ▫ 07-30-2008 12:39 PM - 6 replies
▫ A group-build project for a tube power amp in India ▫ 07-30-2008 05:30 AM - 22 replies
▫ pilot light ideas please ▫ 07-30-2008 01:44 AM - 3 replies
▫ Hammond or Everett AO-48 chassis ▫ 07-29-2008 08:09 PM - 5 replies
▫ Small signal pentode - zener screen regulation - why not ?? ▫ 07-29-2008 07:56 PM - 3 replies
▫ Another KT-88 ▫ 07-29-2008 03:44 AM - 23 replies
▫ Losing the treble and transient response in this PX25 SE amp ▫ 07-28-2008 10:14 PM - 16 replies
▫ Rod Coleman filament supply circuit boards ▫ 07-28-2008 10:14 PM - 14 replies
▫ Calculating Zout for Pentode amp with NFB? ▫ 07-28-2008 07:09 PM - 12 replies
▫ Bypassing a volume pot ▫ 07-28-2008 06:52 PM - 6 replies
▫ Lab supply for cathode bias experiment question.. ▫ 07-28-2008 01:07 PM - 2 replies
▫ Rheostat for adjustable "fixed" bias? ▫ 07-28-2008 12:05 PM - 10 replies
▫ Output transformer Question ▫ 07-28-2008 06:06 AM - 14 replies
▫ Real Cost of Decware Amplifiers ▫ 07-27-2008 11:59 PM - 5 replies
▫ Digitally driven tube pre-amp ▫ 07-27-2008 11:57 PM - 9 replies
▫ Real cost of Dynaco ST 70 Kits ▫ 07-27-2008 11:49 PM - 13 replies
▫ Fake electrolytics? ▫ 07-27-2008 09:14 PM - 17 replies
▫ Oddball Console Amplifier ▫ 07-27-2008 08:58 PM - 17 replies
▫ Transistor phase splitter (Yaqin MC-84L) ▫ 07-27-2008 03:50 PM - 7 replies
▫ Shuguang to stop 845 and 211 ▫ 07-27-2008 10:59 AM - 9 replies
▫ first project. ▫ 07-27-2008 06:54 AM - 10 replies
▫ Help on capacitor info... ▫ 07-27-2008 05:18 AM - 1 reply
▫ Se Kt-66 ▫ 07-26-2008 07:44 PM - 5 replies
▫ Is there a power supply guru? ▫ 07-26-2008 07:41 PM - 18 replies
▫ Direct Coupling question ▫ 07-26-2008 05:20 PM - 2 replies
▫ What's the best way to hook up an Isolation transformer ▫ 07-26-2008 04:55 PM - 6 replies
▫ Marzio &Jelasi's Direct Coupled SE Amp ▫ 07-26-2008 03:40 PM - 13 replies
▫ 6SN7 or 6SN7GT?? ▫ 07-26-2008 03:12 PM - 6 replies
▫ HY40 Power Triode ▫ 07-26-2008 02:55 AM - 9 replies
▫ parallel capacitors in PS question ▫ 07-26-2008 12:40 AM - 4 replies
▫ Looking for feedback on Bottlehead amps ▫ 07-25-2008 10:52 PM - 24 replies
▫ First Watt F3 / Tube Audio Design TAD-125 Hibachi JFET amps ▫ 07-25-2008 10:19 PM - 1 reply
▫ S-5 Push Pull Power Supply Upgrade! ▫ 07-25-2008 07:48 PM - 9 replies
▫ Capacitor voltage rating conversion ▫ 07-25-2008 05:10 PM - 3 replies
▫ Output Transformer Air Gap ▫ 07-25-2008 10:22 AM - 3 replies
▫ PCF80 -Designing a Pentode Constant Current Sink - help needed. ▫ 07-25-2008 09:40 AM - 18 replies
▫ Purity and simplicity of amp design ▫ 07-25-2008 05:28 AM - 63 replies
▫ watt meters ▫ 07-24-2008 06:56 PM - 14 replies
▫ Cheap guitar amp kits? ▫ 07-24-2008 03:59 PM - 7 replies
▫ DIY Dynaco ST70 ▫ 07-24-2008 01:00 PM - 2 replies
▫ Help need some info on this Raytheon ▫ 07-24-2008 07:59 AM - 5 replies
▫ Isolating parallel feed amplifiers ▫ 07-24-2008 07:40 AM - 6 replies
▫ Please help for B+ problem! ▫ 07-24-2008 03:33 AM - 7 replies
▫ Second Tubelab Simple SE board done ▫ 07-24-2008 12:18 AM - 0 replies
▫ "Sallen-Key" Public domain? ▫ 07-23-2008 10:59 PM - 3 replies
▫ Transformer questions / Good headphones? ▫ 07-23-2008 10:03 PM - 3 replies
▫ Which Spud Amp? ▫ 07-23-2008 09:43 PM - 0 replies
▫ Very simple SE Triode Help ▫ 07-23-2008 02:47 PM - 16 replies
▫ Tube friendly speakers ▫ 07-23-2008 02:18 PM - 18 replies
▫ Counterpoint SA5000 schematic ▫ 07-23-2008 05:19 AM - 2 replies
▫ Yaqin MC-10L ▫ 07-23-2008 02:37 AM - 0 replies
▫ Screen Driven Dissimilar Pentode SE Anti-Triode Spud ▫ 07-23-2008 02:19 AM - 2 replies
▫ Power tube bias increasing with signal. ▫ 07-22-2008 09:36 PM - 2 replies
▫ Preamp suggestion required pls ▫ 07-22-2008 04:28 PM - 1 reply
▫ How to change deemphasis from 75uS to 50uS for Fisher FM100 ▫ 07-22-2008 02:07 PM - 8 replies
▫ Which 300B ? ▫ 07-22-2008 02:34 AM - 33 replies
▫ Custom OT for 6C33C tube - any advice ▫ 07-21-2008 09:03 PM - 2 replies
▫ s-5 tube amp hum troubles ▫ 07-21-2008 06:36 PM - 9 replies
▫ Cathode feedback on Mikael's SE KT88? ▫ 07-21-2008 04:19 PM - 0 replies
▫ RCA tube rectifier ▫ 07-21-2008 01:24 PM - 4 replies
▫ 300B Schematic ▫ 07-21-2008 05:29 AM - 7 replies
▫ Tubelab wiring ▫ 07-20-2008 11:59 PM - 6 replies
▫ My first amp! ▫ 07-20-2008 10:38 PM - 1 reply
▫ Keil guitar amps ▫ 07-20-2008 05:17 PM - 0 replies
▫ Building a Aikido preamplifier ▫ 07-20-2008 12:34 PM - 37 replies
▫ Tube rolling causes failure... ▫ 07-19-2008 10:40 PM - 10 replies
▫ Briefly subjected heaters to about 12v by accident. ▫ 07-19-2008 08:06 PM - 6 replies
▫ She lives! ▫ 07-19-2008 07:30 PM - 2 replies
▫ Wilcox Gay 5U ▫ 07-19-2008 07:17 PM - 2 replies
▫ 6EM7 project: maybe use more sand? ▫ 07-19-2008 05:13 PM - 6 replies
▫ 12B4A SET - any critiques on this project? ▫ 07-19-2008 08:59 AM - 20 replies
▫ Heathkit Manual ▫ 07-19-2008 05:42 AM - 2 replies
▫ What is this?? ▫ 07-19-2008 04:40 AM - 19 replies
▫ Amp and Speakers decision ▫ 07-19-2008 03:18 AM - 0 replies
▫ Hey guitar joe... ▫ 07-19-2008 02:03 AM - 0 replies
▫ Question about Low Impedence Filters on a Bogen PA Head Need Info. ▫ 07-18-2008 09:56 PM - 8 replies
▫ counterpoint 3.1 ▫ 07-18-2008 04:57 PM - 11 replies
▫ good book for learning the basics of tubes and tube amps ▫ 07-18-2008 06:58 AM - 5 replies
▫ Heater circuit - to twist or not to twist ▫ 07-18-2008 06:33 AM - 19 replies
▫ Rock and Flame: Wavebourn Barracuda ▫ 07-18-2008 03:26 AM - 13 replies
▫ Low voltage rectifiers? ▫ 07-18-2008 01:42 AM - 6 replies
▫ Horz Sweep amp Pent or screen drive ▫ 07-17-2008 09:18 PM - 21 replies
▫ Lessons learned building a 5VDC Power Supply for a 300B heater ▫ 07-17-2008 07:31 PM - 14 replies
▫ Getting frustrated--- amps and speakers for the noob ▫ 07-17-2008 07:18 PM - 9 replies
▫ Smallish chassis feasible? Multiple pics ▫ 07-17-2008 04:01 PM - 13 replies
▫ Using a Maida Regulator with a CCS ▫ 07-17-2008 03:12 PM - 4 replies
▫ Which Aikido pre-amp PCB for a newbie? ▫ 07-17-2008 08:59 AM - 36 replies
▫ Newbie wants to build Tubelab SE Monos. ▫ 07-17-2008 05:36 AM - 12 replies
▫ FM transmitter / PA ▫ 07-17-2008 01:51 AM - 4 replies
▫ What value attenuator would you use in front of a 396A in a preamp? ▫ 07-16-2008 11:34 PM - 3 replies
▫ Hybrid OTL Circlotron idea ▫ 07-16-2008 06:21 AM - 85 replies
▫ Heathkit aa-121 ▫ 07-16-2008 01:49 AM - 4 replies
▫ Help please checking my B+ design ▫ 07-16-2008 01:05 AM - 26 replies
▫ Triad C-14X choke (Simple SE) ▫ 07-14-2008 08:37 PM - 3 replies
▫ Selenium rectifiers ▫ 07-14-2008 01:31 PM - 19 replies
▫ isolation transformer - high voltage. ▫ 07-14-2008 01:23 PM - 7 replies
▫ Cathode Bypass in a PP Output Stage ▫ 07-14-2008 04:26 AM - 8 replies
▫ Mcintosh Tube Amplifier Protection Circuit ▫ 07-14-2008 03:02 AM - 4 replies
▫ Where to start? Or: cool these plates down ▫ 07-14-2008 02:39 AM - 10 replies
▫ epiphone pacemaker 50 t ▫ 07-14-2008 02:33 AM - 1 reply
▫ Hum trouble on old PA amp ▫ 07-13-2008 07:25 PM - 1 reply
▫ Crazy newbie tube driver question ▫ 07-13-2008 07:22 PM - 6 replies
▫ UHF tubes for audio? ▫ 07-13-2008 05:50 PM - 7 replies
▫ Suggestion for this tube preamp ▫ 07-13-2008 05:48 PM - 7 replies
▫ PCB Board software? ▫ 07-13-2008 12:12 PM - 34 replies
▫ 300B push pull amp ▫ 07-13-2008 07:16 AM - 5 replies
▫ Simple P-P 84 proto ▫ 07-13-2008 03:06 AM - 36 replies
▫ Keeping cost down? ▫ 07-13-2008 12:15 AM - 7 replies
▫ Tube Amp Kit for newbie ▫ 07-12-2008 09:21 PM - 32 replies
▫ 40% Tap direct to plate ▫ 07-12-2008 09:57 AM - 9 replies
▫ Funny bias problem in PP EL34. Please help ▫ 07-12-2008 03:09 AM - 9 replies
▫ Transformer from Heathkit A-7 amp ▫ 07-12-2008 01:01 AM - 8 replies
▫ Any tube stores in Burnaby, Vancouver, Canada? ▫ 07-11-2008 11:44 PM - 2 replies
▫ B+ time delay circuit - your comments ▫ 07-11-2008 11:18 PM - 17 replies
▫ PCB mount line input transformer question ▫ 07-11-2008 07:05 PM - 0 replies
▫ SRPP circuit question ▫ 07-11-2008 04:41 PM - 20 replies
▫ Russian tubes - what pin material? ▫ 07-11-2008 09:58 AM - 8 replies
▫ Auto-bias - easy to convert to or not? ▫ 07-11-2008 06:31 AM - 25 replies
▫ old style anode/grid caps ▫ 07-11-2008 02:22 AM - 1 reply
▫ 6H30 Dual Triode ▫ 07-10-2008 08:16 PM - 9 replies
▫ Why would the frequency response vary so much on a pair of Monoblock amps? ▫ 07-10-2008 07:01 PM - 10 replies
▫ Disassembling output transformer ▫ 07-10-2008 04:47 PM - 3 replies
▫ Tube sockets ▫ 07-10-2008 02:15 PM - 11 replies
▫ H. P. Friedrichs ▫ 07-10-2008 01:22 PM - 1 reply
▫ The Rebuilding of Theta KT-88 Tube amp. ▫ 07-10-2008 11:59 AM - 35 replies
▫ Please check my PS pcb board layout for problems???? ▫ 07-10-2008 05:50 AM - 6 replies
▫ glass capacitors ▫ 07-09-2008 06:57 PM - 10 replies
▫ Help w/fixing counterpoint Sa7 preamp ▫ 07-09-2008 06:22 PM - 0 replies
▫ IXYS 10M45 CCS IC question ▫ 07-09-2008 04:51 PM - 19 replies
▫ Wing-C 300B tubes and opinions ▫ 07-09-2008 04:17 PM - 8 replies
▫ PX25 DRD Power amp. ▫ 07-09-2008 08:11 AM - 53 replies
▫ rectifier tube recommendation please ▫ 07-09-2008 02:16 AM - 5 replies
▫ 6C33C to more standard triode conversion - any ideas? ▫ 07-08-2008 06:48 PM - 2 replies
▫ PP EL84 Build Questions (Bevois Valley) ▫ 07-08-2008 03:38 PM - 19 replies
▫ Tube line stage output impedance ▫ 07-08-2008 03:21 PM - 25 replies
▫ volume between gain stages ▫ 07-08-2008 11:38 AM - 1 reply
▫ Dyna ST70 PWR Tranny 6.3V Crnt Spec? ▫ 07-08-2008 05:22 AM - 6 replies
▫ Next Project - Darling Amplifier or 45 ▫ 07-08-2008 02:42 AM - 5 replies
▫ Options on Great Sounding DIY Tube Headphone Amp ▫ 07-07-2008 11:31 PM - 5 replies
▫ tube magazines ▫ 07-07-2008 09:53 PM - 15 replies
▫ PSU choke help please ▫ 07-07-2008 09:42 PM - 4 replies
▫ PCB Trace properties for PP tube amplifier ( 12AQ5, 6v6 etc) ▫ 07-07-2008 06:24 PM - 8 replies
▫ TubelabSE phase ▫ 07-07-2008 04:50 PM - 2 replies
▫ EML 300B XLS and Mesh comparison ▫ 07-07-2008 08:45 AM - 9 replies
▫ UL - triode switch ▫ 07-07-2008 06:46 AM - 2 replies
▫ Spud anyone? ▫ 07-07-2008 02:50 AM - 49 replies
▫ Nooo! Almost have this amp built! ▫ 07-07-2008 01:00 AM - 13 replies
▫ Need help - Old cap can ID ▫ 07-06-2008 06:40 PM - 5 replies
▫ 16SL7+6SN7 Aikido ▫ 07-06-2008 04:39 PM - 4 replies
▫ 1600Hz Transformer? ▫ 07-06-2008 12:03 PM - 6 replies
▫ Anyone have a Bogen MX 60 Schematic they can post ▫ 07-06-2008 05:43 AM - 2 replies
▫ mc100b burned up ▫ 07-06-2008 04:14 AM - 0 replies
▫ DC heating, parallel diodes ▫ 07-06-2008 02:45 AM - 11 replies
▫ Identify Amperex Tube? ▫ 07-06-2008 01:47 AM - 3 replies
▫ Which speaker tap when going from UL to triode ▫ 07-05-2008 06:52 PM - 4 replies
▫ Tube wont bias... ▫ 07-05-2008 06:42 PM - 4 replies
▫ DIY stepped attenuator ▫ 07-05-2008 04:17 PM - 5 replies
▫ TV-7/DU KT88 Settings? ▫ 07-05-2008 04:11 PM - 3 replies
▫ Filmosound - Tone Knob - Tertiaries ▫ 07-05-2008 02:54 PM - 4 replies
▫ Hybrid Amp, Tube+MOS FET SE ▫ 07-05-2008 01:55 PM - 2 replies
▫ 3.1 integrated possible? ▫ 07-05-2008 01:37 PM - 4 replies
▫ Plate choke material, why to use amorphous core? ▫ 07-05-2008 11:48 AM - 5 replies
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