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. Tone Stack Challenge
  2. Aikido 6SN7 input 5687 output
  3. FRANK"S 6SN7 preamp/linestage
  4. Pentode grid question...
  5. Hybrid fullwave rectifier
  6. 300B stereo amp project help
  7. EdcorEurope
  8. Can AC wires induce hum in output transformers?
  9. Would you use a 4 ohm tap with these speakers?
  10. Changing grid leak bias preamp to cathode bias
  11. 304tl se amp
  12. 5687 Srpp
  13. Dumb Question Brain is numb today!
  14. What a Deal!
  15. MeiXing MC-805AA biasing
  16. whats a good diy tube preamp kit
  17. SimpleSE parts list
  18. Matched tubes or not matched
  19. wood gnomes really do live in france
  20. Pathos Classic one
  21. A Uk supplier of valve amp kits
  22. Detached getter?
  23. 12B4 Line Stage Amp
  24. How do I control volume on Dynaco ST-70?
  25. A few questions from a total novice.
  26. RCA preamp modification
  27. Bogen Challenger CH8 conversion...newb needs help!
  28. 6AU6A - Micropowered tube amp
  29. Yet another DHT filament supply
  30. where to find 5998 ?
  31. Mcintosh MA 2275 Schematic Required
  32. Help on sonic frontier sf line 1 preamp
  33. Voice of Music Reel-Reel schematic needed
  34. Old radio tubes
  35. Bleeders values and ratings
  36. Tube audio circuit analysis
  37. Audio Research LS15 circuit and description
  38. OPT Trafo
  39. OPT test data?
  40. looking for the top 6080 amp schematics
  41. vu meter
  42. Walkthrough: Pioneer SM-83 Tube Amp Restoration
  43. First Amp Build....!
  44. Will This work?
  45. building a lit up tube display
  46. Push-Pull 6CL5's
  47. 2A3 power adjustments by channel
  48. Dead 12ax7 gain stage - Help...
  49. Best 300B amp schematics
  50. Stuck on Standby
  51. Newbee wants to learn about tube amps, etc...
  52. Recent Ad on Craig's List
  53. Pitfalls to warmup delay in DC coupled multiple railed amps?
  54. jan 6832 sub miniature tube
  55. Anti-Triode SEPP, how to do best?
  56. Some Help with Feedback Please!
  57. Cary 300SEI, likely capacitor failure
  58. Ballast Tube Current Source
  59. Ray Lumley m100 schematic needed
  60. Feedback question
  61. CMRR from parallel heaters?
  62. bevois valley clone from eico hf-12 iron..
  63. 27/37/56/76 plate dissipation
  64. Bell 2420 Amplifier Schematic Needed...
  65. How It Works Video
  66. Have I got this right?
  67. any simple circuits I can add to a dac?
  68. neg feed back into v/slope stereo 2 pre-amp
  69. Using 12AX7 as input with feedback
  70. My first power supply
  71. Unknown tube similar to px4
  72. Anyone know of some ridiculously powerful triodes for class A useage?
  73. Bias Voltage
  74. Looking for tubes in Germany
  75. Substituting GU50 tubes for KT88
  76. Parts mined from an AKAI 1800L, what to do?
  77. Has anyone built this amp??????
  78. Output transformers bandwidth/frequency range
  79. Which power supply would you use?
  80. Mullard Articles
  81. SimpleSE - motor run cap specs
  82. Can I reverse leads on an OT?
  83. 9 pin version of a 6SJ7?
  84. 6550 stock ?
  85. Fisher Tube Tuner Restoration Walkthrough
  86. Futterman H-3
  87. simple 6080/6as7 ppp/circlotron project
  88. My unbalanced preamp problem
  89. Gu50
  90. Any Simple CX310 SE schematics around?
  91. Two EI Power Transformers Orientation?
  92. Question on Hybrid Bridge using 5AR4
  93. Recommend a project for a n00b
  94. Help! el34 8pin to 7pin conversion
  95. Converting Yarland FV-34AIII to Triode and Zero NF
  96. 5U4GB PS question
  97. 6X8 Pentode/Triode Musings
  98. DDD mfg co High Voltage power supply?
  99. Mistake on OPT connections : have I damaged something ?
  100. Looking for Jim Morrison Siren Song preamp schematic
  101. cap question....
  102. Ming Da MC368-B90
  103. single tube to drive 300ohm headphones
  104. Negative Feedback?
  105. Possible to convert an oscilloscope into a tube amp?
  106. "Junkbox" 2A5 SE
  107. Power supply testing
  108. Tubeamp power supply - LC question
  109. tube amp coupling cap - audiospace
  110. Radford pentode-triode LTP splitter
  111. Tube bias testers, your opinions, please.
  112. Just saw this and thought I'd pass it along. . .
  113. 6KG6-EL509-EL519 Schematics wanted
  114. Difference between SE output transformer and push-pull output transformers
  115. Sourcing OPTs in Australia
  116. Is there a LOCTAL equiv to a 6V6?
  117. 10m45s LTspice model
  118. What circuit and tube to be used
  119. experimental 6L6G / 6BG6G amp design brainstorm
  120. 29GK6 heater current?
  121. Mr Liung schematics
  122. Want to build tube amp
  123. Back to back transformers.
  124. Using Battery for 300v B+ ?
  125. Anyone recognice this RIAA?
  126. Power cord replacement
  127. Negative LTP CCS supply
  128. c-j pre amp blowing tubes?
  129. first amp build
  130. Tube Mic Preamp - which Edcor transformer?
  131. Scaling the SLCF for other voltage - help
  132. Question about Allied & Hammond Power Transformer Ratings
  133. Education
  134. Bias Ground
  135. Suggestions for RIAA preamp?
  136. External Test Points
  137. 12aY 7 preamp out
  138. 3B7 Loctal DHT
  139. Aikido All in One line stage amp PCB
  140. SS power supply.
  141. 6AU6 pentodes
  142. Parafeed with NP electrolytic?
  143. Charlie K - RIP
  144. Need some advise with a hum problem
  145. IN18 nixies
  146. Quality of S5's K-12G in proposed system
  147. Transformer volume control questions.
  148. Power transformer star ground
  149. Shielding and chassis
  150. Side project - d3a and 6c41c
  151. Cathode-heater leakage
  152. Bell 2122 volume drop off
  153. -500V Maida regulator inquiry
  154. 7591 is glowing RED
  155. Hum problem
  156. Need PS schematic for Musical Machine
  157. Polystyrene capacitor as coupling in output tube stages
  158. Help needed with 10M45S integration .
  159. The daunting world of tubes (where to start)
  160. help 124.3 vac
  161. Bat VK3i buzzing noise
  162. Audioromy FU13 (813) diagram and mods
  163. any complete schematic for 6ak5?
  164. Weird fuzz from Aikido Pre, HELP!
  165. Question about tube amplifier.
  166. 811a rating question
  167. Anode chokes DIY?
  168. Needed: transformer core materials cobalt nickel
  169. Anybody from Italy - please help
  170. Bogen AP35 amp problem
  171. Question about a VR screen supply
  172. DIY Amp Contest in Japan
  173. Hot 5AR4/GZ34 arcing on powerup surge?
  174. Rh84 Ptx
  175. Buzz. Grounding-related?
  176. 50/60Hz Hum - Your Expert Opinion Please
  177. Static Gm test
  178. High Voltage negative regulators
  179. where do i find old tube car radio schematics?
  180. Burned Up Transformer in HiFi 6p3p Tube Amplifier
  181. Weird EH12AY7 Problem
  182. ECC8100 and ECC2000
  183. DHT experts, i need your help
  184. transformers
  185. Vetruvio class-A
  186. PP to balanced input
  187. KT88 AB2 Experiences
  188. Group buy pulse check for Pete Millett tube crossover PCB
  189. Calculating operating point of a DHT
  190. upgrades, mods to JADIS JA-200, JPS2 and JPS3
  191. McIntosh MC-3500 Schematic Information
  192. Use 2X SE output transformers fo 1x PP
  193. 12B4a spice model.
  194. recommended a tube amp for Celestron Studio Ditton 66's
  195. Help needed with bias circuit
  196. How to bias DH dual triodes?
  197. Any of these tubes good for audio applications?
  198. DIY AN M7 need help !!!
  199. Need schematic for Bell 2420 amp
  200. new SimpleSE build
  201. My Citation II Rebuild
  202. KT88 cathode resistors?
  203. Dynaco ST35 boards
  204. Triode strapping a 6V6 (or any tetrode/pentode, really)
  205. ECC 83 + ELL 80 maybe?
  206. need amp suggestions please.
  207. Phase splitter which tube?
  208. WANTED: 12B4A tubes
  209. re-stacking an output transformer
  210. A directly heated triode or Pentode SE amp on a Budget
  211. Annoying high frequency ringing from my 832 tube amp
  212. 30 Amp Knobs
  213. A question about audio interconnects for the ones here with such knowledge.
  214. Hi-end GM70 amplifier with only 2 stages
  215. Paragon
  216. Idea(s) for simple HV regulated psu
  217. NOS Philips "miniwatt/dario" tubes
  218. Hybrid Class D with 6n6p tubes
  219. Any ideas how to estimate VA or mA of Power Tranny
  220. 6L6 Grid resistors??
  221. HeathKit W-2: Missing Tube
  222. Edcor CXSE25-8-5K Dimensions
  223. Bias Pots
  224. Negative Feedback
  225. scott 299D output transformers?
  226. chocke anode load, please explain me..
  227. Integrated HiEnd Amp
  228. Tube amps from vintage RTR's?
  229. componet upgrade
  230. What is "AA" ?
  231. question about twin triode tubes
  232. Building a preamp - somewhat new to tubes
  233. need some guidance about tube amplifiers
  234. Blackgate FK 10000 uF ??
  235. PT failure dangers
  236. sansui 1000a maintenance
  237. filter cap question
  238. add UL tap for 125ese
  239. Bogen D070 Amp - HELP w/ INFO.
  240. Humming asl 2004dt wave pre amp
  241. Cany anyone supply any info. about this amplifier?
  242. Low voltage 845SE with 300B driver
  243. dc heater supply help
  244. gu-29 tube
  245. LTP question
  246. Over 500V rated electrolytics?
  247. Fireplug? (inline fuse)
  248. Help! Flash-over on my amp :-(
  249. 6550 drive question
  250. 4211D Amp?

Content Relevant URLs by vBSEO 3.3.2