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 97 98 99 100

  1. Variable Impedence Mic Preamp
  2. Help me stop my preamp from farting!
  3. Just bought some of those Russian paper/oil caps off of ebay
  4. The Valhalla power amplifier project
  5. help! EL84's dying
  6. Could check this pentode-mu stage thingy for me (disclaimer* it is for a gutar amp)
  7. ASC Polypropylene And Oil Capacitors
  8. pots... log or linear?
  9. Cracking sound through speakers.
  10. EL84-PP - Why just 5W?
  11. Brook12a schematics...
  12. LongTailedPair gain -> how to calculate?
  13. Wiring secondaries of two power trafo's in parallel?
  14. RIAA "Tube Simulations"
  15. Has anyone built this 'Svetlana Six Pack' ?
  16. updated pics of tube project
  17. help 12FV7 datasheet
  18. Why does my oversized preamp trafo gets much too hot?!?!?
  19. 6sn7 pre
  20. 12AY7/6SN7 preamp PSU check
  21. CT design trans application
  22. Shindo schematics?
  23. Octal Hagerman Cornet Experiences
  24. My first (guitar) amplifier
  25. Zenith AM/FM C835 tube Radio schematic
  26. Oh man, my telefunken stoops...
  27. 42 single ended
  28. EL34 Feedback circuit
  29. Spice model for EL86/6CW5
  30. Ditching some High Voltage
  31. Newbie want to build simple tube preamp&psu!need help!
  32. Phono Pre-Design Input
  33. HV Direct Drive tube amp.
  34. A question about Cathodyne/split load/concertina PI's
  35. Kofi Annan in: "Hummin' Trafo Blues"
  36. Rattling Tube
  37. Berning output buffer
  38. Tube PSU Question
  39. JoLida Envoy PreAmp or DIY?
  40. Looking for Audio Note P1SE schematics.
  41. Which SE-ECL82 amp to build?
  42. PSU Help
  43. Help for stabilisator Data
  44. How much ripple on B+ is allowed?
  45. Typical 2A3 hum?
  46. PV10 PS transformer
  47. 300B Filament Voltage Range
  48. Mullard EL34-Authenticity Verification
  49. Fading or Frying Fender Clone Issue
  50. Philips V30M amplifier
  51. PWM power supply???
  52. Regulated psu for tube preamp
  53. About to start a new project: PP 6CK4s...
  54. Komuro DC 300B crct w/ 50dht?
  55. Anyone out there try a SEPP OTL guitar amp??
  56. DIY speaker attenuator?
  57. So what are some good 7-pin, hi mu, low noise/microphonic tubes??
  58. Audio meet pics from this past weekend
  59. Audio Note M7 Line Preamp??
  60. PP 7591 amp
  61. Tube op amps
  62. Please tell me how to upgrade Music Angel KT88 amplifier?
  63. Do I want a fan?
  64. 3rd Aikido?
  65. More Questions about A.Wrights PP1C
  66. 7591s flashing on start-up?
  67. first amp build... wiring questions
  68. pentode aikido driver for 300b
  69. Question about single NOS triodes in cascode for fun
  70. oscillating PP EL84 amplifier
  71. 6H30P based cathode-follower schema kindly requested
  72. Cathode follower question
  73. Bunch of old parts, worth anything?
  74. 6922 vs. 6N1P Bass Response
  75. Behringer reaches a new high in tube "transparency"
  76. Input stage tube
  77. Using transformers as choke?
  78. Resistors
  79. melos gk1 preamps anybody?
  80. Looking for a thread...
  81. DG7-32 based oscillograph schematic needed
  82. Try!!! Ef37a + 6c33c
  83. qustion on tube grade wiring
  84. Balanced pre-amp attempt
  85. GRRR.. sanity check on PTx current please
  86. How do you measure ripple on the B+?
  87. Aikido + EL34 Integrated
  88. heater voltage: why ac, and not dc?
  89. Ideas for using one ECL82 in a preamp
  90. Question about 12AU7
  91. 6AU6, 6U8, 6CL6, plus UTC A-10 make Mic Pre?
  92. WIMA FKP1 1000V as coupling cap ??
  93. Ping amperex re: Hammond organs
  94. schematic needen variable power supply
  95. Distributed Load/Balanced Bridge Connection
  96. CCS, feedback and grid leak questions.
  97. Vdd
  98. Help with 6GW8/ECL86 tubes??
  99. Best amplifier (recomendations) for Fostex FE108ez?
  100. Quick valve construction question
  101. Poindexter's 6v6 PP amp
  102. need some help with Ohm's law-fast!
  103. hybrid rectifier question
  104. I really, really wish I hadn't done that...
  105. Quicksilver 8417 conversion
  106. Supratek
  107. remote OPT, stupid idea ?
  108. Autoformer output stage
  109. Remote Power Supply: A Stupid Idea?
  110. Rjm simple tube phono pre
  111. Voltage controlled filter with tubes ??
  112. Does this look right to you?
  113. PWM amplifier hooked onto a tube preamp
  114. Zenith Console Opt Question, Odd Secondary
  115. Marchand LN108 Tube Phono Preamp
  116. Anyone care to express an opinion on this output Transformer
  117. 6L6 Triode strapped amp suggestions
  118. 6F1 and 6P2 Equivalents
  119. in memoriam Fred N. AKA 807
  120. Perplexed by 5AR4 Tube Socket? Picture Included
  121. Push pull 300B and more than a few questions...
  122. First tube project.
  123. DHT learning
  124. how do i add adjustable bias on amp?
  125. Tube tester: Accurate Instruments Model 157
  126. "El Cheapo Valve Phono" using 6ER5=>12AT7WC?
  127. Design Questions
  128. SRPP + Gainclone
  129. dht p-p filament question
  130. Report - 2005 London HiFi Show
  131. Want to build hi - power amp
  132. Gibson Skylark Grouding Questions
  133. Can I mod this circuit to use 6922 tubes?
  134. tube preamp kit question (again?)
  135. 3f4 spice models needed
  136. Back to Back transformers to get +B of 200V ??
  137. New amp project-some ideas of my own and looking for input from others...
  138. Emphasising the transients, but making the mediocre listenable
  139. Looking For a PP 6Y6GA Design
  140. Industrial vs Commercial amps and OPT's
  141. ECC99 operating points?
  142. Preamp suggestions for a tube newbie
  143. very odd thing happening in my amp... help
  144. 47 Penthode in triode mode.
  145. Capacitor value
  146. PSE bias how?
  147. GM70 Power supply
  148. interstage convert to phase splitter
  149. EL84 SE advice'n'schematics needed
  150. world's heaviest 2A3 amp?
  151. How To Tell What Tubes To Keep
  152. PX4 Trauma
  153. An amplifier project I'm looking for...
  154. Your 100volt plus moment
  155. Dynaco rectifier replacement?
  156. SET on a budget
  157. PSU Design Learning Links
  158. Expensive Commercial Amps
  159. Tube modified CD player with TDA1543
  160. Types of polypropylene capacitor....
  161. Fluorescent lamp choke - use in tube amp?
  162. Tube Overdrive
  163. Mains Transformer for EL34PP
  164. Please review schematic
  165. Wire size for projects?
  166. super simple tube amp needed...
  167. Modifing A Fender Bassman Scheme
  168. Matlab-based triode modelling software
  169. 12AT7 Pre-amp schematic, where to find?
  170. Test settings for Hickok 539A for 183/483 tube?
  171. choke input ripple level?
  172. 120 Hz Buzz Unplugged
  173. 300B like 845
  174. Guitar amp picks up radio??
  175. DC filament ground and high voltage ground
  176. Roll CALL: How many guitar amp guys are here
  177. DIY Club remote volume help?
  178. Aesthetix Rhea and I/O diagrams?
  179. Electrolytic vs polyprop capacitors
  180. Cathode Bypass Cap questions
  181. rectification and xfmr stress
  182. Audio Research
  183. Anybody got Melos MA-111 Schematic?
  184. Problem locating power supply
  185. Timer Relay
  186. Help With Jukebox Amp
  187. Help the Idiot: Simple, Great-Sounding Integrated Amp Designs
  188. Help Please Guitar Project Mess
  189. Help - tube driver for spring reverb...
  190. 6W6 as a driver
  191. Choosing the best EL34 pp opt
  192. Your opinion, please
  193. Tube surround sound
  194. Could you guys check this cascode article for me
  195. what would happen if...
  196. A Heretical Unity Gain Line Stage part III
  197. Which ECC83 tube and caps question
  198. Paralle Push Pull Simulclass
  199. organ amp question
  200. Stereo build- Mikael Abdellah's KT88 SE amp
  201. Audio Research AC21 cross over
  202. First DIY amp pics-as promised!
  203. emission-lab info
  204. Simple EL84 PP design needed
  205. 6C33 Circlotron
  206. Valves glow fierce
  207. Kirung's GM70 SE-Amps from Korea
  208. Digital Pots
  209. Troubleshooting First Tube Project
  210. Millett Low mu Preamp help
  211. thoughts about a 'universal' preamp
  212. Morgan Jones's Bevois Valley amp...
  213. Aikido line stage results? share yours
  214. Fender power transformer help
  215. HELP with breadboard layout!!!
  216. balanced line stage schematic needed
  217. Its Alive!! First Diy Amp Works!!
  218. Duncan Munro Psud primer please?
  219. Preamp volume control??
  220. Welborne 300b DRD plate current
  221. Active compensation...
  222. Calculating expected output power.
  223. Hybrid X line amp
  224. any way to fix a end cap on a 807 power tube
  225. power tube question
  226. MJ head-amp- how does it sound?
  227. Quick Aikido question
  228. What kind of amp?
  229. Problem with cathode resistor
  230. 2A3 DRD schematic wanted
  231. reduce before amplifying?
  232. 6AS7-G RCA application considerations
  233. Matisse Fantasy waveform output test
  234. El84/6bq5/ecc83 + Ef86 = Dc Pp
  235. Searching for simple circuit
  236. McIntosh MC60 Screens
  237. Improve this Pilot 240 (EL84/6BQ5)
  238. Eimac 35TG
  239. power supply issues
  240. Which Amperex ECC88 is the best?
  241. laney PA amp questions
  242. Grid battery bias on phono....
  243. EL34 identification
  244. UL vs SE
  245. 6sn7 operating points
  246. HELP! B+ voltage problem/burning power resistor
  247. are these tubes any good ?????
  248. Free Lunch/Monkey/DRD inspired 2A3
  249. E280F Triode mode operating point
  250. EL84 Guitar amp questions (long, sorry)

Content Relevant URLs by vBSEO 3.3.2