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

  1. Video lectures on tube amplifier design
  2. Millett PP or Allen Wright's PP-2c or?
  3. Magnavox 8608-10
  4. Time relay
  5. Help with Music Angel XD800MKIII mods!?
  6. Little Dot MKIII ??????
  7. Cathode follower wideband amplifier
  8. Wrong base ???
  9. My first DIY schematic... need eagle eyes.!
  10. Stubborn Noise/Oscillation - Another Call for Help
  11. help with power tranny
  12. Tube Amp Repair - SE Michigan
  13. ST 70 Power on!
  14. given choice of low screen voltage or low bias which sounds better or is it equal
  15. How many various OEM brands come from Shuguang?
  16. Bye for now! :)
  17. general power tube output impedance chart?
  18. Should I ground my ST 70?
  19. What is the biggest 300B tube? (Dimension)
  20. 6N16 Valve break-in time
  21. Mystery Amp.
  22. valves tungsten filament
  23. Musical Machine (triode PP EL34) question(s)
  24. M100 Output Tube Problem!
  25. Need to replace the power switch on an EAR 859
  26. Eico pentode vs triode VA
  27. gold grid 5881 - was I had?
  28. DN2540 CCS questions
  29. Operating point for pp KT88
  30. Low THD of Opt Cathode feedback
  31. No bias in S-5 12K, 8L, 16L, etc?
  32. Wanted...broken Golden Tube Audio SE-40
  33. Precise 116 Data Needed
  34. Can you bi-wire using two different taps
  35. Transient Responce of Williamson Amp build
  36. Tantalum caps in the filament supply?
  37. Assistance needed in reconstructing a Golden Tube Audio SE-40
  38. interesting power tube comparison chart
  39. 833A and 3-500Z Circuits
  40. Pilot SA-260 amp and Fischer 400C advice
  41. Long tailed pair phase inverter issues
  42. advice on changing bridge rectifier
  43. 21st Century Maida Regulator
  44. 6CA7 UL Push Pull Amp Design
  45. Tube recommendations anyone?
  46. WE 2C51 Date codes
  47. T500-1 - any ideas?
  48. hybrid power amp and more questions
  49. Yaqin MC-100B - not as powerful as advertised, but still a good value.
  50. 6CB5 AMP BUILD.
  51. ABB France SE OPT??
  52. heater wiring
  53. Audioromy FU29 improvement and upgrades?
  54. Need VFD display filament driver
  55. Power Transformer Limitations
  56. Yaqin 100b channel imbalance
  57. Grid stoppers in class AB2 push-pull arrangenets?
  58. Glass bead inside of KT88
  59. Find tube tester!
  60. mono block amps with 2 x 833C overkill ? even possible to DIY?
  61. happiness is a box of 6550 NOS tubes
  62. Taming the 83
  63. 6550 tube bias characters
  64. Tube Amp Squeel
  65. Bias help Music Angel L$, EL84
  66. Stubborn Oscillation
  67. Moderm "high watt" resistors seem too small
  68. Thyratron based emergency switch?
  69. vT4C.com out of business....
  70. Maggie 8802 6V6
  71. Need Counterpoint SA-3 Board Photo
  72. Diodes in a Graetz Hybrid
  73. Tube Noob with a few questions
  74. KT88 Push Pull Idea... Questions
  75. Superior Instruments tv11 restore question?
  76. Superior Instruments tv11 restore question?
  77. Frequency Response of Output Tubes
  78. symptom of a dying (gain) tube
  79. Grounding in monoblock amps
  80. Seeking 6ME5 data and connection diagram
  81. 12BK5 UL tracing gone boosted triode?
  82. Difference between OPT
  83. Tweaking PP AMP Suggestions Please
  84. DC coupled Sand 'n Glass with Current Feedback
  85. Yaqin 100B fire and spares
  86. Pls help with a preamp
  87. Questions about Aikdo all in one octal
  88. Did I get used to my amp's sound?
  89. Michaelson and Austin TVA1 revB
  90. Joy of birth - a new preamp brought to the world
  91. 5U4G
  92. 6N6P best musicality? Help with modes.
  93. Identifying this capacitor in my Cayin TA-30 amp
  94. GU50 Push-Pull version1
  95. Common mode feedback
  96. Stuck with repair ;(
  97. active hum cancellation. PCB idea?
  98. Why this huge cap is so light?
  99. OPT performance
  100. Capacitor WVDC. is higher really better?
  101. Tung Sol ECC803S reissue - thumbs down
  102. Biasing Marshall 9200
  103. In a search for a 6CG7 line stage schematic
  104. Output stage for a Mono FM tube tuner
  105. Want to use El Cheapo P.I. for Scott LK72 rebuild
  106. Ansar caps
  107. TO220 isolation kits breakdown
  108. Schematic for Sony TC-200 tape unit
  109. HV power supply with serial chokes
  110. no logo on tube
  111. Tango XE-20-600S SE OPT for preamp ?
  112. RF Voltage Amplifier
  113. Anyone deal with psvane member here?
  114. Op Amp
  115. Imbalanced LTP using 6922/E88CC
  116. OPT choice for PP1C
  117. Drawing software for P2P layout?
  118. A hybrid amplifier with PCC88 and IRFP240/9240
  119. ARC D-75A Regulator tube
  120. cap upgrade worth it?
  121. valve/tube output transformer construction
  122. 300B (or other DHT) biasing options
  123. Cathode Bypass Capacitor concern
  124. Phase splitter into push pull front end - possible?
  125. Question on push-pull OT LEads
  126. Importance of Screen Voltage of Pentode???
  127. measuring dc offset in OTL headphone amp
  128. Seeking comments on Russian KBG-MN for PS
  129. Joe List Archive
  130. grundig tk45
  131. Grid bias - sound quality of battery or PSU?
  132. Help: Western Electric 418A tubes wire in triode ?
  133. Scott 355 Tuner-Preamp
  134. 6550 internal resistance hit parade
  135. Max anode voltage and srpp/aikido amps
  136. Effect of IERC coolers on SQ
  137. Tube standoff ?
  138. YAQIN MS-650B vs Yarland PRO 845 mkIV ?
  139. New Harman Kardon Citation II
  140. Conrad johnson Preamp Volume
  141. What's the benefit of dual NFB?
  142. Over-Spec'd PT as replacement.
  143. pp KT88, IT phase splitter
  144. ID this for me?
  145. 12AX7 in starving mode Dynaco PAS3X
  146. YAQIN MS-22B. Any thoughts, please?
  147. Heathkit A7E phono section
  148. Dyna-Quik 500
  149. Driving balanced outputs
  150. Primary current feedback - any good? Help!
  151. 3C30 tube...datasheet...help !!!
  152. LEDs on input valve cathodes
  153. Help with Conrad Johnson
  154. Output Transformer Power Rating Question
  155. Little piece of glass in tube.
  156. ASL Preamp Help
  157. Start to Salivate - My Tube Amp Candidates - Your thoughts welcome
  158. Citation V OPT Diagnosis/Question...
  159. Cossor BT185 Beam tetrode
  160. Using a non-bridge (2 diode) full wave rectifier in bias supply.
  161. Amp making phase shifter noise
  162. Help, Amp distortion after on/off/on???
  163. TDO 5w resistors?
  164. Audio Research Dual 75 - Low Bias
  165. 6N3 SRPP + 6N5P Cathode Follower HPA Testing
  166. 6N16 headphone amplifier
  167. 5k plate to plate, el34 triode strapped, 400v b+
  168. russian penthodes 6J2P-EB and 6J9P.
  169. mA meter drags the circuit down
  170. Valve stage coupling capacitor leakage?
  171. Carvin Transformer
  172. Modifying the Lowther Club HK Jazz 6L6 ($449 SET amp)
  173. RCA 6V6PP amp schematic (Schade fb)
  174. 25W Class A Hybrid Amp
  175. help testing gz32 gz34
  176. A BeamKido?
  177. Zeners and voltage regulation
  178. A2 positive bias push pull possible?
  179. EL34 burn out on Yaqin MC10T
  180. input transformer and impedance question
  181. Options for 300mA tube rectifiers
  182. Electrical flow
  183. 5AR4 @ 250mA
  184. newbie with a choke question
  185. ROCKOAL JUKEBOX 1458
  186. Who can help to recognize this tube preamp?
  187. DIY High power Audio Amplifier from Heathkit SB200
  188. ECL82 amplifier help
  189. 6146B SPICE model wanted
  190. how to install a bias meter in a cathode bias amp
  191. Stuck... Output tube for Single ended?
  192. Aikido Octal Headphone amp
  193. silvertone organ amp conversion. 4704
  194. Impedance bridging
  195. Philips AG-9016 frequency range?
  196. fuse voltage rating?
  197. Grounding issue between turntable and tube amp
  198. Great sounding KT88 amp?
  199. Designing a Gomes i/v stage for tda1541a
  200. choke input power supply
  201. Need Help with New Amp Build, Ugly signals
  202. Amplifier Saftey
  203. Cary SLM100 question (older brand)
  204. 6n18p 6n1p 6n2p project needed
  205. Heater wiring idea?
  206. 300B Amp Testing
  207. New amp build
  208. Bamboo chassis 6P3P SE
  209. 6N23P-EB SRPP DAC output stage.
  210. Packard Plamor Schematic needed
  211. Hickok 600A
  212. Opinion; Alternate input tube socket
  213. Very Simple Attenuator For Audio Card
  214. Switchable PI, Paraphase,Cathodyne, LTP.
  215. Hmm... 4-1000As
  216. Bootstrapped anode
  217. Selecting the correct output transformer/primary impedance
  218. Caddock MK-132 or Mills MRA-12 as plate R?
  219. Minimum rating for stepdown transformer
  220. 6L6 Dared VP-20 issues
  221. Potentiometer Desigations/Codes
  222. 6L6 SE Tube Amp Kit on eBay... opinions?
  223. Building a VT46/PT25H PP amp
  224. Help choosing Sweat Peach FU50 or KT100
  225. New FM-3 Boards
  226. Unity-Coupled amp project
  227. Rectifier injecting noise into heater supply
  228. Tube base failures
  229. 1624 as DHT triode outputs
  230. Will this 2 stage DC DHT cct idea work?
  231. Help with Output Transformer
  232. multi cap verses add on power supply board
  233. 6AS7 hybride CCS
  234. Decware Zbox - looking for Tube buffer mods to reduce buzz
  235. Decware Zbox - looking for Tube buffer mods to reduce buzz
  236. Eico-ST-70 Advice
  237. Choosing Btw 2 EL34 China Tube Amps
  238. Looking for the GA article.
  239. Tube amp left ch. hum
  240. Did i model this PT correctly(psud2)?
  241. Help with the modifications of my tube-amp
  242. detailed photos of RH 84 build?
  243. heathkit aa-191
  244. Which KT-88 tube?
  245. 10m45s cascode diagram?
  246. What amp can make use of these large caps?
  247. Leslie 720 used with stereo keyboard
  248. Tube testers : sorting out settings for the Jackson 648
  249. Question about Shishido 2A3
  250. A micro-programmable tube tracer/tester

Content Relevant URLs by vBSEO 3.3.2