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

  1. Time relay
  2. Help with Music Angel XD800MKIII mods!?
  3. Little Dot MKIII ??????
  4. Cathode follower wideband amplifier
  5. Wrong base ???
  6. My first DIY schematic... need eagle eyes.!
  7. Stubborn Noise/Oscillation - Another Call for Help
  8. help with power tranny
  9. Tube Amp Repair - SE Michigan
  10. ST 70 Power on!
  11. given choice of low screen voltage or low bias which sounds better or is it equal
  12. How many various OEM brands come from Shuguang?
  13. Bye for now! :)
  14. general power tube output impedance chart?
  15. Should I ground my ST 70?
  16. What is the biggest 300B tube? (Dimension)
  17. 6N16 Valve break-in time
  18. Mystery Amp.
  19. valves tungsten filament
  20. Musical Machine (triode PP EL34) question(s)
  21. M100 Output Tube Problem!
  22. Need to replace the power switch on an EAR 859
  23. Eico pentode vs triode VA
  24. gold grid 5881 - was I had?
  25. DN2540 CCS questions
  26. Operating point for pp KT88
  27. Low THD of Opt Cathode feedback
  28. No bias in S-5 12K, 8L, 16L, etc?
  29. Wanted...broken Golden Tube Audio SE-40
  30. Precise 116 Data Needed
  31. Can you bi-wire using two different taps
  32. Transient Responce of Williamson Amp build
  33. Tantalum caps in the filament supply?
  34. Assistance needed in reconstructing a Golden Tube Audio SE-40
  35. interesting power tube comparison chart
  36. 833A and 3-500Z Circuits
  37. Pilot SA-260 amp and Fischer 400C advice
  38. Long tailed pair phase inverter issues
  39. advice on changing bridge rectifier
  40. 21st Century Maida Regulator
  41. 6CA7 UL Push Pull Amp Design
  42. Tube recommendations anyone?
  43. WE 2C51 Date codes
  44. T500-1 - any ideas?
  45. hybrid power amp and more questions
  46. Yaqin MC-100B - not as powerful as advertised, but still a good value.
  47. 6CB5 AMP BUILD.
  48. ABB France SE OPT??
  49. heater wiring
  50. Audioromy FU29 improvement and upgrades?
  51. Need VFD display filament driver
  52. Power Transformer Limitations
  53. Yaqin 100b channel imbalance
  54. Grid stoppers in class AB2 push-pull arrangenets?
  55. Glass bead inside of KT88
  56. Find tube tester!
  57. mono block amps with 2 x 833C overkill ? even possible to DIY?
  58. happiness is a box of 6550 NOS tubes
  59. Taming the 83
  60. 6550 tube bias characters
  61. Tube Amp Squeel
  62. Bias help Music Angel L$, EL84
  63. Stubborn Oscillation
  64. Moderm "high watt" resistors seem too small
  65. Thyratron based emergency switch?
  66. vT4C.com out of business....
  67. Maggie 8802 6V6
  68. Need Counterpoint SA-3 Board Photo
  69. Diodes in a Graetz Hybrid
  70. Tube Noob with a few questions
  71. KT88 Push Pull Idea... Questions
  72. Superior Instruments tv11 restore question?
  73. Superior Instruments tv11 restore question?
  74. Frequency Response of Output Tubes
  75. symptom of a dying (gain) tube
  76. Grounding in monoblock amps
  77. Seeking 6ME5 data and connection diagram
  78. 12BK5 UL tracing gone boosted triode?
  79. Difference between OPT
  80. Tweaking PP AMP Suggestions Please
  81. DC coupled Sand 'n Glass with Current Feedback
  82. Yaqin 100B fire and spares
  83. Pls help with a preamp
  84. Questions about Aikdo all in one octal
  85. Did I get used to my amp's sound?
  86. Michaelson and Austin TVA1 revB
  87. Joy of birth - a new preamp brought to the world
  88. 5U4G
  89. 6N6P best musicality? Help with modes.
  90. Identifying this capacitor in my Cayin TA-30 amp
  91. GU50 Push-Pull version1
  92. Common mode feedback
  93. Stuck with repair ;(
  94. active hum cancellation. PCB idea?
  95. Why this huge cap is so light?
  96. OPT performance
  97. Capacitor WVDC. is higher really better?
  98. Tung Sol ECC803S reissue - thumbs down
  99. Biasing Marshall 9200
  100. In a search for a 6CG7 line stage schematic
  101. Output stage for a Mono FM tube tuner
  102. Want to use El Cheapo P.I. for Scott LK72 rebuild
  103. Ansar caps
  104. TO220 isolation kits breakdown
  105. Schematic for Sony TC-200 tape unit
  106. HV power supply with serial chokes
  107. no logo on tube
  108. Tango XE-20-600S SE OPT for preamp ?
  109. RF Voltage Amplifier
  110. Anyone deal with psvane member here?
  111. Op Amp
  112. Imbalanced LTP using 6922/E88CC
  113. OPT choice for PP1C
  114. Drawing software for P2P layout?
  115. A hybrid amplifier with PCC88 and IRFP240/9240
  116. ARC D-75A Regulator tube
  117. cap upgrade worth it?
  118. valve/tube output transformer construction
  119. 300B (or other DHT) biasing options
  120. Cathode Bypass Capacitor concern
  121. Phase splitter into push pull front end - possible?
  122. Question on push-pull OT LEads
  123. Importance of Screen Voltage of Pentode???
  124. measuring dc offset in OTL headphone amp
  125. Seeking comments on Russian KBG-MN for PS
  126. Joe List Archive
  127. grundig tk45
  128. Grid bias - sound quality of battery or PSU?
  129. Help: Western Electric 418A tubes wire in triode ?
  130. Scott 355 Tuner-Preamp
  131. 6550 internal resistance hit parade
  132. Max anode voltage and srpp/aikido amps
  133. Effect of IERC coolers on SQ
  134. Tube standoff ?
  135. YAQIN MS-650B vs Yarland PRO 845 mkIV ?
  136. New Harman Kardon Citation II
  137. Conrad johnson Preamp Volume
  138. What's the benefit of dual NFB?
  139. Over-Spec'd PT as replacement.
  140. pp KT88, IT phase splitter
  141. ID this for me?
  142. 12AX7 in starving mode Dynaco PAS3X
  143. YAQIN MS-22B. Any thoughts, please?
  144. Heathkit A7E phono section
  145. Dyna-Quik 500
  146. Driving balanced outputs
  147. Primary current feedback - any good? Help!
  148. 3C30 tube...datasheet...help !!!
  149. LEDs on input valve cathodes
  150. Help with Conrad Johnson
  151. Output Transformer Power Rating Question
  152. Little piece of glass in tube.
  153. ASL Preamp Help
  154. Start to Salivate - My Tube Amp Candidates - Your thoughts welcome
  155. Citation V OPT Diagnosis/Question...
  156. Cossor BT185 Beam tetrode
  157. Using a non-bridge (2 diode) full wave rectifier in bias supply.
  158. Amp making phase shifter noise
  159. Help, Amp distortion after on/off/on???
  160. TDO 5w resistors?
  161. Audio Research Dual 75 - Low Bias
  162. 6N3 SRPP + 6N5P Cathode Follower HPA Testing
  163. 6N16 headphone amplifier
  164. 5k plate to plate, el34 triode strapped, 400v b+
  165. russian penthodes 6J2P-EB and 6J9P.
  166. mA meter drags the circuit down
  167. Valve stage coupling capacitor leakage?
  168. Carvin Transformer
  169. Modifying the Lowther Club HK Jazz 6L6 ($449 SET amp)
  170. RCA 6V6PP amp schematic (Schade fb)
  171. 25W Class A Hybrid Amp
  172. help testing gz32 gz34
  173. A BeamKido?
  174. Zeners and voltage regulation
  175. A2 positive bias push pull possible?
  176. EL34 burn out on Yaqin MC10T
  177. input transformer and impedance question
  178. Options for 300mA tube rectifiers
  179. Electrical flow
  180. 5AR4 @ 250mA
  181. newbie with a choke question
  182. ROCKOAL JUKEBOX 1458
  183. Who can help to recognize this tube preamp?
  184. DIY High power Audio Amplifier from Heathkit SB200
  185. ECL82 amplifier help
  186. 6146B SPICE model wanted
  187. how to install a bias meter in a cathode bias amp
  188. Stuck... Output tube for Single ended?
  189. Aikido Octal Headphone amp
  190. silvertone organ amp conversion. 4704
  191. Impedance bridging
  192. Philips AG-9016 frequency range?
  193. fuse voltage rating?
  194. Grounding issue between turntable and tube amp
  195. Great sounding KT88 amp?
  196. Designing a Gomes i/v stage for tda1541a
  197. choke input power supply
  198. Need Help with New Amp Build, Ugly signals
  199. Amplifier Saftey
  200. Cary SLM100 question (older brand)
  201. 6n18p 6n1p 6n2p project needed
  202. Heater wiring idea?
  203. 300B Amp Testing
  204. New amp build
  205. Bamboo chassis 6P3P SE
  206. 6N23P-EB SRPP DAC output stage.
  207. Packard Plamor Schematic needed
  208. Hickok 600A
  209. Opinion; Alternate input tube socket
  210. Very Simple Attenuator For Audio Card
  211. Switchable PI, Paraphase,Cathodyne, LTP.
  212. Hmm... 4-1000As
  213. Bootstrapped anode
  214. Selecting the correct output transformer/primary impedance
  215. Caddock MK-132 or Mills MRA-12 as plate R?
  216. Minimum rating for stepdown transformer
  217. 6L6 Dared VP-20 issues
  218. Potentiometer Desigations/Codes
  219. 6L6 SE Tube Amp Kit on eBay... opinions?
  220. Building a VT46/PT25H PP amp
  221. Help choosing Sweat Peach FU50 or KT100
  222. New FM-3 Boards
  223. Unity-Coupled amp project
  224. Rectifier injecting noise into heater supply
  225. Tube base failures
  226. 1624 as DHT triode outputs
  227. Will this 2 stage DC DHT cct idea work?
  228. Help with Output Transformer
  229. multi cap verses add on power supply board
  230. 6AS7 hybride CCS
  231. Decware Zbox - looking for Tube buffer mods to reduce buzz
  232. Decware Zbox - looking for Tube buffer mods to reduce buzz
  233. Eico-ST-70 Advice
  234. Choosing Btw 2 EL34 China Tube Amps
  235. Looking for the GA article.
  236. Tube amp left ch. hum
  237. Did i model this PT correctly(psud2)?
  238. Help with the modifications of my tube-amp
  239. detailed photos of RH 84 build?
  240. heathkit aa-191
  241. Which KT-88 tube?
  242. 10m45s cascode diagram?
  243. What amp can make use of these large caps?
  244. Leslie 720 used with stereo keyboard
  245. Tube testers : sorting out settings for the Jackson 648
  246. Question about Shishido 2A3
  247. A micro-programmable tube tracer/tester
  248. amp with the FD422
  249. ST-35 C-1 Capacitor on PC-13 board.
  250. Transformer winding examples!!!!

Content Relevant URLs by vBSEO 3.3.2