PDA

View Full Version : Tubes / Valves


Pages : 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 [37] 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96

  1. Mengyue el34b schematic needed
  2. safest way to power up a new build
  3. Phono amp Raytheon 6418 tubes
  4. YL1350 Help characteristic and output tranies
  5. EL84 PP using 5K plate to plate primate OPT
  6. VR tube flashing?
  7. Tabletop 12au7 Amp
  8. Renovated website: www.pmillett.com, www.tubebooks.org
  9. Troubleshooting Eico HF-85
  10. Custom chassis europe
  11. Mixer from pre-amp design
  12. SE Output Tranny - Dumb Question
  13. What Tube for a Differential Amplifier?
  14. Thinking of buying a Lumley Reference ST70 with attached passive pre
  15. Psu
  16. Protection of the Irreplaceable
  17. Trix T621 PA amplifier (British)
  18. Resistor types ??? (carbon or metal film)
  19. First Amp Build
  20. Help ID these little PP output xfrmrs?
  21. Rectifier voltage drop question
  22. dc and ac heater supply in Aikido
  23. Can I obtain a suitable B+ voltage with spare parts?
  24. Multi tap transformers dont use the whole windings?
  25. First layout with spud
  26. EL152, GU50 and EL156
  27. Convert a 110 volt Mcintosh Mc275 to 230volt
  28. transformer maker list
  29. design a preamp, so easy....
  30. SRPP - determining load and balancing
  31. Idea for all C3g phono stage
  32. temp check
  33. Pentode Question
  34. K & K Audio Transformer phase splitter?
  35. Transformer Efficiency
  36. How to test a 6H30 tube
  37. Karaoke Tube Hi-end In The Future
  38. What makes the old McIntosh stuff so good?
  39. Paralell 10M45's for 71A DHT filament?
  40. Rod Coleman CCS/gyrator help
  41. Differential amp.Do they pass 2nd harmonics or reject them?
  42. A half 6sl7 tube
  43. failing tube
  44. Capacitor in series - Resistor across ?
  45. Tube preamp choise...
  46. Some general tube questions from a Tube newbie !!
  47. How unsafe is an Autotransformer?
  48. Can a dual triode use a common cathode resistor?
  49. Dared MC-7P
  50. SRC2496 Miniatube tube output stage
  51. Tubetech smc2b multiband compressor
  52. Tweaking/correction question - Xindak MT-1 balance
  53. HELP! ELNA CERAFINE 500V Caps
  54. Em87/ em84
  55. Pioneer SM-83 restoration
  56. Best GM70 version suited for audio??
  57. PSUDII transformer question
  58. what are these caps doing?
  59. Distortion VS OPT impedence
  60. Heater wiring approaches
  61. Rogers pops, crackle and static are driving me mad!
  62. tube power enough?
  63. Ever notice those scratches on some plates??
  64. JE 45/2A3 SE 2001 edition
  65. Difficult Time Finding Replacement Caps
  66. Mini tube output stage
  67. Mismatched Power Tubes
  68. Eimac 35TG amplifier glows !
  69. ECC88 Shield
  70. One amp channel for mid, the other for tweeter, to SE or to PP, THAT is the Question?
  71. SRRP Output stage. Calculating power output.
  72. bogen chb-35
  73. Rating for resistors in power supply?
  74. Effects of Bias /Ammeters....
  75. pentode mode distortion 6LR8? George?
  76. Info for 6b4g PP
  77. Understanding unregulated PSU
  78. C3m C3g tubes
  79. More ebay craziness
  80. Shunt Capacitor
  81. 6021 Load Line
  82. TubeRiaa - How to calculate the impendance?
  83. Fake Vacuum Tube Amps - Funny but real
  84. 12.6v+ vs 6.3v+/- heater supply
  85. Distortion Measurements
  86. modifying kt88 pp ul amp
  87. Aikido help!
  88. Are Positive Grid Voltage Traces Necessary?
  89. New to Tubes
  90. How to read "Typical Characteristics" curves
  91. 12B4 pre output cap and LF instability
  92. attractive amp kit?
  93. Stereo 7O with transformer phase splitter?
  94. Filter Cap Recommendation
  95. New Guy...With a question...
  96. Interesting wiring guide find, thanks NASA!
  97. marantz 9's OPT data
  98. Why do my amps want signal ground and safety earth connected?
  99. scott 299c
  100. Tube Schematics
  101. JLTi EL34 and KT88 Amplifiers
  102. Radford sta15 looking for a nice preamp...
  103. Really subjective question
  104. Pen-toad Question
  105. Revox Model 40- leave it alone or dig in?
  106. Driver of Sumo Tubes PP for anybody: Shematic and PCB
  107. Output transformer from rowe ammi mm4
  108. Equivalent Circuit?
  109. 300b tube life
  110. CBS tube?
  111. Looking for a 700vdc supply
  112. Are all 9-pin sockets the same?
  113. Problem with short Test
  114. Troubleshooting 12B4/RH84/Akai project
  115. hi-end vacuum tube phono preamplifier
  116. PCB help
  117. QUICK transformer Question HELP
  118. Configuring an AB class amp to work in pure A class
  119. SCott LK-48-B balance pot
  120. lost a tube
  121. Lee Laboratory - model 50 Cruiser
  122. 1/2 of 12AX7 in single envelope?
  123. 2 pairs of 8150's
  124. AX84 Clean Preamp
  125. 8150 Tubes
  126. Capacitor/Choke value in SET buffer supply? (95 vdc B+)
  127. NJ Tube Auction
  128. pentode buffer
  129. Tube Buffer? 12ax7?
  130. What is this tube?
  131. Kits
  132. Power supply high voltage problems with Melos amp.
  133. 811A Class A2 with Power Drive
  134. Help ID this 12AX7/EL84 Console(?) Amp
  135. Eico HF-86
  136. Marantz 9 Filter CHOKE value??
  137. 10M45s: strange behaviour @ 100mA
  138. LtSpice - Russian tube models
  139. Before I buy KT88's
  140. Ultra Low Cost 6P1P Push Pull Schematic,PCB
  141. adding reverb to Bassman circuit
  142. 300B SE amp: One more one
  143. Already found problem with new amp
  144. LtSpice transformer - confusion
  145. OPUS 5.0 A Modern Mullard
  146. EL34 PP New Design of newbie
  147. Tubelabs SE vs. Simple SE ??
  148. Somebody knows about Lorenz e84l?(real Lorenz)
  149. Aikido Heater PSU help
  150. ecc99 with which Interstage Transformer?
  151. Looking for Audio Research Caps
  152. 2A3 SE Problem
  153. One knob tone control
  154. Tube Base Application ?
  155. The no-brainer project, some questions
  156. schematic request Yarland FV34AIII
  157. SY/Pete Millett Crossover
  158. Please don't stone me. . . .
  159. Golden Tube
  160. BH Curve & OPT choices
  161. Scott Transformers
  162. Identifying transformers
  163. Need Help understanding a triode fed LTP.
  164. How to measure and adjust bias
  165. Another cheap tube amp from China
  166. where to add master volume/gain/tone to Bogen L330?
  167. Another Williamson
  168. Weird EL84 PP behavior
  169. 300B SE Design
  170. Tube/Valve Shop in BERLIN
  171. Aikido buffer/gain selector?
  172. Gaijin friendly audio shop in Tokyo area?
  173. Troubleshooting channel dropout
  174. "groundbus" is this right?
  175. About New Production Tubes
  176. suche JJ E88CC oder 6922 Sovtek in Berlin
  177. 8ohm output transformer with a 4ohm load
  178. Power transformer - good for anything?
  179. Beginner question, swap .047uf for .05uf?
  180. Tetra phono stage
  181. Japanese OPTs
  182. Changing secondary voltage (Uncivilized way)
  183. 4EH7 opinions anyone?
  184. Silvertone 45A tubes....rare variant
  185. single 12AT7 in a tubelab simple se
  186. Finished the "big one"!
  187. CV428 or 5B254M useful?
  188. How about making your own tubes?!
  189. entry level int-amp?
  190. What Cap Is This?
  191. help please with kt-88 ultralinear o/p transformer
  192. A flea thingy that sounds good
  193. Mullard vs. Williamson 60W UL PP amp. Which one?
  194. Need help with PSUD II model
  195. 5v to 2.5v for 2a3 filament
  196. Does 2A3 require a grid stopper?
  197. Hammond ECL86/6GW8 conversion
  198. Connecting two opt's to act as one.
  199. Usefullness of tubes
  200. twisted/isolated/shielded wires?
  201. Feedback question
  202. What tubes for a tube amp?
  203. SE-OPTs
  204. Phase splitting using directly heated tubes?
  205. Change EL84 from Triode to Ultra linear
  206. DC hybrid folded-cascode for Schade
  207. New UK Manufacturer of Valves
  208. Can any here explain the JHS designation?
  209. Too good to be true???
  210. Judging a tube's condition
  211. EF86 tube preamp
  212. Any tips for snap in type caps to replace solder lug cans?
  213. 6EM7 SET Headamp
  214. Are these ALL really EL34 subs?
  215. parallel tubes
  216. Changing the frequency of AC from mains to lower, out of audible range???
  217. Se 6550
  218. New Suppo Audio EL34 amp
  219. 60Watt+ valve design wanted
  220. Interesting tube on e-bay for trans atlantic cable
  221. Need help solving problem on new 2A3 build
  222. Tube and Passive Preamps-Auto Transformers for Attenuators/Volume Control - Overview
  223. Peavey Classic 30 - Squeal
  224. Where bay M6 lamination (M4,M2) metal for transformer
  225. dynamic pentode screen draw
  226. Tube Sockets
  227. Circuit Ideas for the 815 (martian tube)
  228. Old Tektronix unit, usefull?
  229. my transformer output has a center tap: what do I do with this?
  230. 6AV5GA amp?
  231. Phase splitter idea
  232. Lowering noise in small signal pentodes?
  233. Articles from the past
  234. tube upgrade for vintage orange 120
  235. Help for LTP/CCS plus cathode follower
  236. Conrad Johnson PV-5, my next project, some simple questions
  237. ALTEC 1566a (DiY...if)
  238. Friday Night Fun with a ST-70
  239. Aikido All-In-One Octal Heater Troubles
  240. Guitar tube amp OT Calculation/Winding HELP!
  241. transimpedance amplifier
  242. Jaehong Lee OTL
  243. What tube bases to support for a new tube curve tracer
  244. 6GE5 in driver service for class B P-P
  245. Replace Electrolytics?
  246. Can OT's couple?
  247. tube solid state hybrid guitar amp, looking for schematic
  248. before i drill Simple SE Chassis Seperation of input and output
  249. gates m-3638 preamp
  250. Oversized caps (PS and coupling) in RH84: Problem?

Content Relevant URLs by vBSEO 3.3.2