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

  1. Bias Question
  2. Building a variac
  3. Is my 300B tube dead?
  4. One channel quiet - any bright ideas?
  5. Saw them coming (stupid prices on ebay)
  6. EL36/6CM5 pp design critique
  7. Driving Raven R2 with tubes
  8. Does Anyone Know What This Is?
  9. Need help with tubes problem...
  10. 6V6GT push pull NFB resistor value
  11. Power cord for single ended triode
  12. Virtual chokes
  13. 12AU7 based preamp hums when output cable is touched!
  14. Possible Test equipment find.
  15. 6ak5-45
  16. Using coax for signal wiring?
  17. Chassis Plate Finish
  18. Schade84
  19. Fisher 800c selenium rectifier pictures
  20. Looking for tips on operating points for tubes in anode follower ...
  21. Transformer in the cathodes ??
  22. Fisher 800c static,crackle
  23. 19J6 replacement
  24. Newbie tube buffer kit
  25. Any recommendations for tube for vari-mu compressor?
  26. AMC CVT 3030 Bias Procedure
  27. Anyone used a edcor cxpp100-ms-5k OT
  28. Noisy gain boost
  29. Troubleshooting hum issues with batteries?
  30. Rectifying Heater Supply
  31. tube heater over voltage!please help...
  32. rca 829b bias ? Audioromy 828
  33. 10k winding, 100k pot
  34. What is the definition of a 'good tube'?
  35. 3-stage DC-coupled Ampl
  36. 1946 Philco Tube Receiver
  37. A New Source for James Transformers
  38. Edcor Site Down? Gone? anyone know anything?
  39. How to calculate DRD amps..
  40. PL-519 Tube - Tell me more please...
  41. Need ideas for amp with 2A3, One Electron UBT-3
  42. Favourites discrete brand for tube amp
  43. Pharmicia EPS500/400 Power supply - tube use
  44. Black Art Audio
  45. 12AX7/12BH7 Hammond Tube Preamp Project
  46. Dampen transformer endbells?
  47. Do I have DC on my AC line?
  48. GM-70 cathode feed SE amplifier
  49. Rogers cadet mk 2 newbie project experience required
  50. Mcintosh amps transformer rewinding, help needed please!
  51. Using an output tranny from a stereo for a single-ended amplifier ?
  52. 6336A Single Ended.
  53. UA 175 Urei 175
  54. Morgan Jones 5842 RIAA
  55. Question about current ratings of Hammond 300 series power transformers.
  56. Cathode Windings
  57. Phono stage for 12B4 amp [from previous thread]
  58. Looking for schematic of 26 WOT Preamp
  59. Transformer Lam Questions
  60. Schottky diode bias
  61. ACROSOUND direct-couple EL84 amplifier question
  62. RH807 CCS loaded
  63. Audio Note Kit 1 PSU question
  64. New kt88's or 6550
  65. Bias Supply resistors
  66. Incredible source for used transformers and parts!
  67. Reclaimed Hammond H100 PSU's
  68. Arc Vt-60 Cloned :-)
  69. First Time Pre Amp Build
  70. 845 - Progress so far
  71. Nube challange12AX7 to drive 6C4
  72. 7th harmonic distortion from PP pentodes depends on bias?
  73. West Output Transformers?
  74. Help me design my DAC/Line Preamp.
  75. Hybrid preamp tube problemHi,
  76. Building RH84 SE tube amp.
  77. Question - THD Measrement/Spectrum Analyzis
  78. What to do with TMC tube radio gear?
  79. Easy & Safe & Good sounding gainclone tube buffer
  80. Compactron (31AL10) Head-Scratcher
  81. What cable do you use from input socket to volume pot
  82. problem with 12AE6A buffer
  83. Parafeed dc blocking/coupling cap help
  84. Funky Looking 15DQ8s
  85. 12SN7 vs 7N7 bs 6SN7
  86. Correct Pins For EL84 Triode Strap
  87. Dimensions for anode cap sizes?
  88. Mains transformer help needed please
  89. Tone Stack Challenge
  90. Aikido 6SN7 input 5687 output
  91. FRANK"S 6SN7 preamp/linestage
  92. Pentode grid question...
  93. Hybrid fullwave rectifier
  94. 300B stereo amp project help
  95. EdcorEurope
  96. Can AC wires induce hum in output transformers?
  97. Would you use a 4 ohm tap with these speakers?
  98. Changing grid leak bias preamp to cathode bias
  99. 304tl se amp
  100. 5687 Srpp
  101. Dumb Question Brain is numb today!
  102. What a Deal!
  103. MeiXing MC-805AA biasing
  104. whats a good diy tube preamp kit
  105. SimpleSE parts list
  106. Matched tubes or not matched
  107. wood gnomes really do live in france
  108. Pathos Classic one
  109. A Uk supplier of valve amp kits
  110. Detached getter?
  111. 12B4 Line Stage Amp
  112. How do I control volume on Dynaco ST-70?
  113. A few questions from a total novice.
  114. RCA preamp modification
  115. Bogen Challenger CH8 conversion...newb needs help!
  116. 6AU6A - Micropowered tube amp
  117. Yet another DHT filament supply
  118. where to find 5998 ?
  119. Mcintosh MA 2275 Schematic Required
  120. Help on sonic frontier sf line 1 preamp
  121. Voice of Music Reel-Reel schematic needed
  122. Old radio tubes
  123. Bleeders values and ratings
  124. Tube audio circuit analysis
  125. Audio Research LS15 circuit and description
  126. OPT Trafo
  127. OPT test data?
  128. looking for the top 6080 amp schematics
  129. vu meter
  130. Walkthrough: Pioneer SM-83 Tube Amp Restoration
  131. First Amp Build....!
  132. Will This work?
  133. building a lit up tube display
  134. Push-Pull 6CL5's
  135. 2A3 power adjustments by channel
  136. Dead 12ax7 gain stage - Help...
  137. Best 300B amp schematics
  138. Stuck on Standby
  139. Newbee wants to learn about tube amps, etc...
  140. Recent Ad on Craig's List
  141. Pitfalls to warmup delay in DC coupled multiple railed amps?
  142. jan 6832 sub miniature tube
  143. Anti-Triode SEPP, how to do best?
  144. Some Help with Feedback Please!
  145. Cary 300SEI, likely capacitor failure
  146. Ballast Tube Current Source
  147. Ray Lumley m100 schematic needed
  148. Feedback question
  149. CMRR from parallel heaters?
  150. bevois valley clone from eico hf-12 iron..
  151. 27/37/56/76 plate dissipation
  152. Bell 2420 Amplifier Schematic Needed...
  153. How It Works Video
  154. Have I got this right?
  155. any simple circuits I can add to a dac?
  156. neg feed back into v/slope stereo 2 pre-amp
  157. Using 12AX7 as input with feedback
  158. My first power supply
  159. Unknown tube similar to px4
  160. Anyone know of some ridiculously powerful triodes for class A useage?
  161. Bias Voltage
  162. Looking for tubes in Germany
  163. Substituting GU50 tubes for KT88
  164. Parts mined from an AKAI 1800L, what to do?
  165. Has anyone built this amp??????
  166. Output transformers bandwidth/frequency range
  167. Which power supply would you use?
  168. Mullard Articles
  169. SimpleSE - motor run cap specs
  170. Can I reverse leads on an OT?
  171. 9 pin version of a 6SJ7?
  172. 6550 stock ?
  173. Fisher Tube Tuner Restoration Walkthrough
  174. Futterman H-3
  175. simple 6080/6as7 ppp/circlotron project
  176. My unbalanced preamp problem
  177. Gu50
  178. Any Simple CX310 SE schematics around?
  179. Two EI Power Transformers Orientation?
  180. Question on Hybrid Bridge using 5AR4
  181. Recommend a project for a n00b
  182. Help! el34 8pin to 7pin conversion
  183. Converting Yarland FV-34AIII to Triode and Zero NF
  184. 5U4GB PS question
  185. 6X8 Pentode/Triode Musings
  186. DDD mfg co High Voltage power supply?
  187. Mistake on OPT connections : have I damaged something ?
  188. Looking for Jim Morrison Siren Song preamp schematic
  189. cap question....
  190. Ming Da MC368-B90
  191. single tube to drive 300ohm headphones
  192. Negative Feedback?
  193. Possible to convert an oscilloscope into a tube amp?
  194. "Junkbox" 2A5 SE
  195. Power supply testing
  196. Tubeamp power supply - LC question
  197. tube amp coupling cap - audiospace
  198. Radford pentode-triode LTP splitter
  199. Tube bias testers, your opinions, please.
  200. Just saw this and thought I'd pass it along. . .
  201. 6KG6-EL509-EL519 Schematics wanted
  202. Difference between SE output transformer and push-pull output transformers
  203. Sourcing OPTs in Australia
  204. Is there a LOCTAL equiv to a 6V6?
  205. 10m45s LTspice model
  206. What circuit and tube to be used
  207. experimental 6L6G / 6BG6G amp design brainstorm
  208. 29GK6 heater current?
  209. Mr Liung schematics
  210. Want to build tube amp
  211. Back to back transformers.
  212. Using Battery for 300v B+ ?
  213. Anyone recognice this RIAA?
  214. Power cord replacement
  215. Negative LTP CCS supply
  216. c-j pre amp blowing tubes?
  217. first amp build
  218. Tube Mic Preamp - which Edcor transformer?
  219. Scaling the SLCF for other voltage - help
  220. Question about Allied & Hammond Power Transformer Ratings
  221. Education
  222. Bias Ground
  223. Suggestions for RIAA preamp?
  224. External Test Points
  225. 12aY 7 preamp out
  226. 3B7 Loctal DHT
  227. Aikido All in One line stage amp PCB
  228. SS power supply.
  229. 6AU6 pentodes
  230. Parafeed with NP electrolytic?
  231. Charlie K - RIP
  232. Need some advise with a hum problem
  233. IN18 nixies
  234. Quality of S5's K-12G in proposed system
  235. Transformer volume control questions.
  236. Power transformer star ground
  237. Shielding and chassis
  238. Side project - d3a and 6c41c
  239. Cathode-heater leakage
  240. Bell 2122 volume drop off
  241. -500V Maida regulator inquiry
  242. 7591 is glowing RED
  243. Hum problem
  244. Need PS schematic for Musical Machine
  245. Polystyrene capacitor as coupling in output tube stages
  246. Help needed with 10M45S integration .
  247. The daunting world of tubes (where to start)
  248. help 124.3 vac
  249. Bat VK3i buzzing noise
  250. Audioromy FU13 (813) diagram and mods

Content Relevant URLs by vBSEO 3.3.2