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. Fisher 500c radio hum
  2. Modify Power supply for Tube Amp
  3. Unusual amps..
  4. Help with Preamp/Amp hum
  5. Question about step up in 300B PP amp
  6. How do we reach PMillet?
  7. Please help me with a few questions and a idea for an old PA
  8. Edcor CXSE25-8-2.5K single ended UL transformer
  9. Voltseconds ccs for the K-12 kit
  10. The Torpedo Parafeed Headphone Amplifier
  11. Tube Rectifiers do sound different
  12. 6922, a 6DJ8 replacement??
  13. QB2/250 amplifier
  14. WE 350B and 311A
  15. Single ended 300b's
  16. More power!
  17. How the magnetic affect the sound of tube amplifier
  18. Valves replacement for Copland CT402
  19. Changing valve damage
  20. Tube phono preamplifier by 12ax7
  21. Altec 353A oddity
  22. I need to lose that Hummmm
  23. Reduce B+ with zener
  24. triode and pentode 6v6 in parallel
  25. How to make mic input transformer 150:50KCT for mic tube preamp???
  26. Webcor 12AU7 is it a Mullard?
  27. Everett AO48
  28. Resurrecting old tubes
  29. Lumley ST70 Output impedance change and other questions
  30. AC Heater reference to B+
  31. Two tube class a2 se trioded el84 with 12dw7 cathode follower driver?
  32. Overly complicated 1.6A CCS Heater Supply
  33. Hibryd amplifier with tube/valve ECC88 (PCC88) and chipamp LM1875
  34. Tube/Valve buffer with ECC88
  35. High(er) gm octal pentodes?
  36. Shielding Characteristics of Copper Clad PCB
  37. Starting a Meixing MC34-A07 modification project
  38. 6V SLA Dropping resistor for a 5VDC Filament Supply
  39. Wind (Thermionic?) noise, and other strange sounds
  40. Suggestions for an tube-amp with KT88
  41. SE-100 Golden Tube Audio - REPAIR
  42. Power amp vs preamp topology
  43. EL34 Characteristics for Ug2 400V
  44. old Heathkit amp
  45. Toroid OPT for 300B
  46. Help: Connecting two Fluke meters in series
  47. Preamp Volume Controls
  48. Output SE Transformer Question
  49. Silver bearing grease for tube sockets
  50. Should I try adding a small Tube Preamp to a DTA-100?
  51. IS 6N6P A DIRECT REPLACEMENT FOR ECC88CC ?
  52. Dynaco stereo 70 look alike
  53. Vacuum Tube factory: For Sale!
  54. Does anybody know anything about this German console
  55. Heater dillema for multi chassis phono stage.
  56. Q: lifespan of JJ ECC99 tubes
  57. Cold solder joint?
  58. Input Impedance/Buffers
  59. Old capacitors..Comments..
  60. Shizuki capacitors?
  61. Spectrum Analyzer: What to get ? What to look for in a spectrum analyzer ?
  62. Amperex Orange Globe 12ax7 ,Brimar cv4004
  63. Question about transformer lamination stacking techniques
  64. line preamplifier with 6c10
  65. Homebrew Toroidal Output Transformer
  66. Line output tube
  67. MJK's SSSchadeode
  68. Any one know were to buy the fu-80 tube?
  69. Maida Regulator PCB
  70. Suggestions for 7k output transformers.
  71. Help: Fluke 87V Meter Calibration
  72. Searching for Primaluna Prologue Three schematic
  73. Pentode Regulation Question
  74. pentodes with CCS load?
  75. Are these tube PCBs any good ?
  76. china 6L6 SEdiy
  77. What are your opinions of the ST-70 and St-120
  78. Baffle Step Compensation Tube Circuit
  79. 6L6 to 7027 cathode resistor value
  80. Dared MC-7P Upgrades
  81. adapter to go from 6L6 to 807
  82. My Experience with a Jolida 202s (SoFar..)
  83. Cathodyne gain calculator link
  84. Dynakit ST-35?
  85. PSUD modeling old amp PS fails.
  86. Fisher 800 push-pull output stage not symmetrical. Why?
  87. Question of D3a driving 300B
  88. old console amp
  89. st35 vs millett DCPP vs tubelab simple SE
  90. New Tim Mellows OTL project
  91. Melted my mains transformer - Where to find replacement ?
  92. Strange.................
  93. Effect of high mains voltage?
  94. Kent SL 21 Tube head need help!!
  95. Hexfred or SIC rectifiers in choke supplies
  96. 'Strange' bass boost with impedance transformer
  97. Did my tubes go south ?
  98. Use of Tango NN-600-600 Transformers ?
  99. Anyone have an explanation for break(burn)in
  100. The Right Tube & TRannie
  101. 6SL7 / 6SN7 Phono
  102. Tube integrated amp in China.
  103. Power supply issues with Borbely style 12AU7/MOSFET hybrid
  104. heater elevation ground point
  105. Edison 12, can anyone help?
  106. Delay B+ using relay?
  107. New Schematic Linestage Tube Preamp using EF86 & 12AX7
  108. Phonostage (WAD clone) and 12B4A Preamp Build
  109. Interstage coupling feedback
  110. Just received a Yaqin MC-10T and have a couple of questions.
  111. Amplifier Troubleshooting
  112. Audio Preamplifier with PCC88
  113. Need Help With These TriodeDick Preamp Scematics
  114. I need help with my amp project
  115. Looking for unbalanced to balanced transformer
  116. Power Transformer Question
  117. My First Tube Amp Project S5 K-12G
  118. 6E2 vacuum tube compatibility
  119. Tube condenser microphone help!
  120. Audio transformer feedback loop
  121. yaqin vk amp without the loudness button uk version
  122. PP driver stage with local feedback
  123. Leader LAG-120B Audio Generator Manual Wanted
  124. Transformer brand question
  125. Single ended at 24Vcc 1+1W @ 8 ohm - three tubes
  126. EL41 PP power supply questions
  127. Reduce output on a ECC88CC class A pre-amp !
  128. SE OT impedance question
  129. DIY Tube amp book?
  130. 6P6P tubes?? will 6V6's work?
  131. RH84 amplifier build, but very weak distorted output
  132. Paralleling filament transformers
  133. 6ak5 triode mode disipation
  134. Equalize or Not Equilize when driving a tube amp ?
  135. How to retire from DIY and sell off all your workshop contents?
  136. New to tubes and diyaudio here, question about torrids and tube amps...
  137. PC Based Oscilliscope for Tube Curcuits
  138. Lamp in HV Centre Tap - why?
  139. EL156 PP
  140. Has anyone here bought from ussr-tubes.com ?
  141. Which cathode bypass capacitor?
  142. RIAA Schematic for-6SL7,7308 or?
  143. Chassis' for Tube Gear
  144. Convergent Audio Tech SL1 preamp
  145. Buy Them While You Can Not When You...
  146. Does anyone know of Thomas Martens?
  147. OTL for 40-80ohm speakers
  148. Morrison Dinosaur
  149. pcl86=14gw8 ??
  150. My little SE with GU50
  151. Source follower in a DC-coupled pp amp?
  152. Tube chassis for retail sale.
  153. Poor man's power supply
  154. High voltage driver for AB2 operation GU81m tubes
  155. 5AR4 rectified power supply question
  156. Direct Coupled Amp
  157. Is this EL84 kit from Germany worth fooling with?
  158. 6v6 PP Pentode mode
  159. 5 pin octal tube socket
  160. RCA Manual Typo?
  161. pete millet low mu preamp
  162. Capability to drive the 211 PP
  163. 6BG6G SE advice needed.
  164. Signal Generator: Which one to buy ? What to look for in a signal generator ?
  165. Power booster
  166. I've just build this steroe amplifier
  167. What amp to build? Push Pull, SE? thoughts?
  168. amp sounds bad- fatman itube 252
  169. 6C33 single ended class A2 (cathode network question)
  170. Sweet Peach EL34b Amp - Distortion?
  171. 6C33C socket types, where to buy?
  172. haedphone amp. using 6418< NEED HELP
  173. finished my 6au6/807 amplifier
  174. Thinking about building an S5 16LS 16W amp I've got some questions for the forum./
  175. Broskie "Unbalancer" - transformer specifications
  176. Tube chess.
  177. How Its Made - Vacuum Tubes
  178. Please help me understand power supply load
  179. 12AU7 - How absolute are maximum ratings?
  180. Tube rejuvination
  181. Article: Samsung brings back tubes in audio dock
  182. 1st build suggestions
  183. Parallel SE output
  184. Fixed Bias question
  185. vintage ua 610 schematic
  186. Which KT88 PP and which Transformers?
  187. Some more special small-signal tv tubes
  188. Help - YAQIN MS-20L schematic
  189. Power and Speaker cables
  190. Leak TL12+ with triode mode EF86
  191. diy tube dampers
  192. VTVM troubleshooting help
  193. PP amp crossover distortion
  194. Sanity check please? ST-70(-ish) power supply
  195. Thoughts of apparent noise on ground - due to power tx?
  196. hybride circlotron
  197. Clone
  198. 8156 Beam Pentode Compactron
  199. DOUBLE TRIODE (6N16B)
  200. looking for Tube I/V analog for dac schematic ?
  201. NewBee PPEL84
  202. Whooaa! Now we're talking.
  203. Cinema Engineering AT-18
  204. Back from school
  205. Amp ideas for my spare 3.3k output transformers.
  206. HEllo and a few suggestions please
  207. 1SH24B Pre-Amp (or buffer?)
  208. Anode cap for GU 29 / QQE06/40
  209. Back to back autotransformers for B+?
  210. Sound Valves M60 schematics
  211. Volume Pot for RH84
  212. Mengyue mini el34b
  213. Which Chinese integrated tube amp have the power for Rock Song ?
  214. Help on transformers please
  215. 300B alternatives
  216. Anybody using a tube amp in their car?
  217. What is a KT88-98?
  218. 6au6 line stage a bad idea?
  219. Making a Kron tube
  220. AY Symphonies preamp
  221. Need to Upgrade Tube Preamp Volume Pot
  222. Tubelab Simple SE low B+
  223. Filament AC or DC?
  224. rasping sound from Dared VP-16
  225. Anyone have any "small signal" pentode models?
  226. Power amp distortion for modern amps
  227. Help with EL504-based amplifier
  228. Tubes: Are they worth it?
  229. Radio Shack Boston Monobloc (fuse question)
  230. 829B 3E29 Pentode PPP?
  231. Fixed Autobias?
  232. Best wishes
  233. Radiotron A504 amplifier schematic
  234. Blown power tube - a short story
  235. Hickok 752A calibration?
  236. replace EL34 with EL37 !?
  237. Mono push-pull driver PCB
  238. Magnavox 139AA schematics, info?
  239. Anyone knows what driver tube on DowdyLama's GM-70......
  240. Building an amp around the QB5/1750 transmitter tube
  241. Instrument amp from '59 Lowrey donor chassis.
  242. cascoded gyrator loaded 6H9C to low idle.
  243. vacuum tube DAC and connection
  244. Dynaco ST70 II Right Channel Out
  245. ST70 Inrush Issue
  246. ECC88 OTL heaphone amp
  247. Help with deciding to build or buy Tube amp.
  248. Luxman LV-105 static on on channel
  249. equivlent of FU-50
  250. placing the volume control

Content Relevant URLs by vBSEO 3.3.2