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 99 100 101 102 103 104 105

  1. Active RIAA Eq for tubes- Brian Clark's article
  2. pre hums - even unplugged!
  3. Push Pull Preamplifier anybody?
  4. 6AN8 tube question
  5. Distortion in Fisher 800C
  6. 20% versus 43% screen tap
  7. Van der Veen transformers
  8. Want to upgrade Velleman K8020
  9. KT88 Power supply question
  10. TX coupled, pentode linestage
  11. phase splitter question
  12. New preamp project is online
  13. Newbie: Which amps to build?
  14. Which valve, 5842 (417A) or 6H30
  15. How do you punch out your chassis holes?
  16. Help identifying tube tester
  17. paralelled tube
  18. ECC88 at 12 volts
  19. azarus preamplifier schematics
  20. Which valve amp do I keep?
  21. Favorite Driver for 845
  22. Somebody has that magazine?
  23. modify parallel push-pull EL84 to single push-pull
  24. How long it will last?
  25. Hurricane Wilma
  26. Suddenly, no output from Copland CTA-501
  27. 807 Audio Amp Progress Report
  28. Choke induced Hum
  29. Wim's DC EL84 amp
  30. Drivers for a KT88 pair
  31. what do u think of these tubes?
  32. 12BH7 spice 3f4 model
  33. Clone Marantz M7 Line Amp
  34. PIO caps question
  35. 6HF5 sweep tube single ended amp
  36. My first DIY
  37. Winding A Interstage Transformer
  38. help building 12ax7/el84 amp
  39. PSE schematic
  40. Using PSU Designer to calculate DC filament supply
  41. Dynaco stereo 70 driver board
  42. Excellent and cheap DIY INTERSTAGE!
  43. Need Advice with Timer Relay Shut Off
  44. standby switch
  45. Purpose of small cap across PSU rails?
  46. 6SL7 + EL34 SE Audio Amp
  47. 6C33 fixed/auto bias ?
  48. Long Tail and Local feedback
  49. I look for EAR 859 pictures.
  50. Designing a simple tube opamp?
  51. Difference between Hammond 200 and 300 series
  52. Ultrapath Cap
  53. where to find 600v 18awg wire??
  54. Suggested power supply B+?
  55. Variable Impedence Mic Preamp
  56. Help me stop my preamp from farting!
  57. Just bought some of those Russian paper/oil caps off of ebay
  58. The Valhalla power amplifier project
  59. help! EL84's dying
  60. Could check this pentode-mu stage thingy for me (disclaimer* it is for a gutar amp)
  61. ASC Polypropylene And Oil Capacitors
  62. pots... log or linear?
  63. Cracking sound through speakers.
  64. EL84-PP - Why just 5W?
  65. Brook12a schematics...
  66. LongTailedPair gain -> how to calculate?
  67. Wiring secondaries of two power trafo's in parallel?
  68. RIAA "Tube Simulations"
  69. Has anyone built this 'Svetlana Six Pack' ?
  70. updated pics of tube project
  71. help 12FV7 datasheet
  72. Why does my oversized preamp trafo gets much too hot?!?!?
  73. 6sn7 pre
  74. 12AY7/6SN7 preamp PSU check
  75. CT design trans application
  76. Shindo schematics?
  77. Octal Hagerman Cornet Experiences
  78. Zenith AM/FM C835 tube Radio schematic
  79. Oh man, my telefunken stoops...
  80. 42 single ended
  81. EL34 Feedback circuit
  82. Spice model for EL86/6CW5
  83. Ditching some High Voltage
  84. Newbie want to build simple tube preamp&psu!need help!
  85. Phono Pre-Design Input
  86. HV Direct Drive tube amp.
  87. A question about Cathodyne/split load/concertina PI's
  88. Kofi Annan in: "Hummin' Trafo Blues"
  89. Rattling Tube
  90. Berning output buffer
  91. Tube PSU Question
  92. JoLida Envoy PreAmp or DIY?
  93. Looking for Audio Note P1SE schematics.
  94. Which SE-ECL82 amp to build?
  95. PSU Help
  96. Help for stabilisator Data
  97. How much ripple on B+ is allowed?
  98. Typical 2A3 hum?
  99. PV10 PS transformer
  100. 300B Filament Voltage Range
  101. Mullard EL34-Authenticity Verification
  102. Philips V30M amplifier
  103. PWM power supply???
  104. Regulated psu for tube preamp
  105. About to start a new project: PP 6CK4s...
  106. Komuro DC 300B crct w/ 50dht?
  107. DIY speaker attenuator?
  108. So what are some good 7-pin, hi mu, low noise/microphonic tubes??
  109. Audio meet pics from this past weekend
  110. Audio Note M7 Line Preamp??
  111. PP 7591 amp
  112. Tube op amps
  113. Please tell me how to upgrade Music Angel KT88 amplifier?
  114. Do I want a fan?
  115. 3rd Aikido?
  116. More Questions about A.Wrights PP1C
  117. 7591s flashing on start-up?
  118. first amp build... wiring questions
  119. pentode aikido driver for 300b
  120. Question about single NOS triodes in cascode for fun
  121. oscillating PP EL84 amplifier
  122. 6H30P based cathode-follower schema kindly requested
  123. Cathode follower question
  124. Bunch of old parts, worth anything?
  125. 6922 vs. 6N1P Bass Response
  126. Behringer reaches a new high in tube "transparency"
  127. Input stage tube
  128. Using transformers as choke?
  129. Resistors
  130. melos gk1 preamps anybody?
  131. Looking for a thread...
  132. DG7-32 based oscillograph schematic needed
  133. Try!!! Ef37a + 6c33c
  134. qustion on tube grade wiring
  135. Balanced pre-amp attempt
  136. GRRR.. sanity check on PTx current please
  137. How do you measure ripple on the B+?
  138. Aikido + EL34 Integrated
  139. heater voltage: why ac, and not dc?
  140. Ideas for using one ECL82 in a preamp
  141. Question about 12AU7
  142. 6AU6, 6U8, 6CL6, plus UTC A-10 make Mic Pre?
  143. WIMA FKP1 1000V as coupling cap ??
  144. Ping amperex re: Hammond organs
  145. schematic needen variable power supply
  146. Distributed Load/Balanced Bridge Connection
  147. CCS, feedback and grid leak questions.
  148. Vdd
  149. Help with 6GW8/ECL86 tubes??
  150. Best amplifier (recomendations) for Fostex FE108ez?
  151. Quick valve construction question
  152. Poindexter's 6v6 PP amp
  153. need some help with Ohm's law-fast!
  154. hybrid rectifier question
  155. I really, really wish I hadn't done that...
  156. Quicksilver 8417 conversion
  157. Supratek
  158. remote OPT, stupid idea ?
  159. Autoformer output stage
  160. Remote Power Supply: A Stupid Idea?
  161. Rjm simple tube phono pre
  162. Voltage controlled filter with tubes ??
  163. Does this look right to you?
  164. PWM amplifier hooked onto a tube preamp
  165. Zenith Console Opt Question, Odd Secondary
  166. Marchand LN108 Tube Phono Preamp
  167. Anyone care to express an opinion on this output Transformer
  168. 6L6 Triode strapped amp suggestions
  169. 6F1 and 6P2 Equivalents
  170. in memoriam Fred N. AKA 807
  171. Perplexed by 5AR4 Tube Socket? Picture Included
  172. Push pull 300B and more than a few questions...
  173. First tube project.
  174. DHT learning
  175. how do i add adjustable bias on amp?
  176. Tube tester: Accurate Instruments Model 157
  177. "El Cheapo Valve Phono" using 6ER5=>12AT7WC?
  178. Design Questions
  179. SRPP + Gainclone
  180. dht p-p filament question
  181. Report - 2005 London HiFi Show
  182. Want to build hi - power amp
  183. Can I mod this circuit to use 6922 tubes?
  184. tube preamp kit question (again?)
  185. 3f4 spice models needed
  186. Back to Back transformers to get +B of 200V ??
  187. New amp project-some ideas of my own and looking for input from others...
  188. Emphasising the transients, but making the mediocre listenable
  189. Looking For a PP 6Y6GA Design
  190. Industrial vs Commercial amps and OPT's
  191. ECC99 operating points?
  192. Preamp suggestions for a tube newbie
  193. very odd thing happening in my amp... help
  194. 47 Penthode in triode mode.
  195. Capacitor value
  196. PSE bias how?
  197. GM70 Power supply
  198. interstage convert to phase splitter
  199. EL84 SE advice'n'schematics needed
  200. world's heaviest 2A3 amp?
  201. How To Tell What Tubes To Keep
  202. PX4 Trauma
  203. An amplifier project I'm looking for...
  204. Your 100volt plus moment
  205. Dynaco rectifier replacement?
  206. SET on a budget
  207. PSU Design Learning Links
  208. Expensive Commercial Amps
  209. Tube modified CD player with TDA1543
  210. Types of polypropylene capacitor....
  211. Fluorescent lamp choke - use in tube amp?
  212. Tube Overdrive
  213. Mains Transformer for EL34PP
  214. Please review schematic
  215. Wire size for projects?
  216. super simple tube amp needed...
  217. Matlab-based triode modelling software
  218. 12AT7 Pre-amp schematic, where to find?
  219. Test settings for Hickok 539A for 183/483 tube?
  220. choke input ripple level?
  221. 120 Hz Buzz Unplugged
  222. 300B like 845
  223. DC filament ground and high voltage ground
  224. DIY Club remote volume help?
  225. Aesthetix Rhea and I/O diagrams?
  226. Electrolytic vs polyprop capacitors
  227. Cathode Bypass Cap questions
  228. rectification and xfmr stress
  229. Audio Research
  230. Anybody got Melos MA-111 Schematic?
  231. Problem locating power supply
  232. Timer Relay
  233. Help With Jukebox Amp
  234. Help the Idiot: Simple, Great-Sounding Integrated Amp Designs
  235. Help - tube driver for spring reverb...
  236. 6W6 as a driver
  237. Choosing the best EL34 pp opt
  238. Your opinion, please
  239. Tube surround sound
  240. Could you guys check this cascode article for me
  241. what would happen if...
  242. A Heretical Unity Gain Line Stage part III
  243. Which ECC83 tube and caps question
  244. Paralle Push Pull Simulclass
  245. organ amp question
  246. Stereo build- Mikael Abdellah's KT88 SE amp
  247. Audio Research AC21 cross over
  248. First DIY amp pics-as promised!
  249. emission-lab info
  250. Simple EL84 PP design needed

Content Relevant URLs by vBSEO 3.3.2