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. vk-2100 mod question please
  2. Heater supply
  3. 6111/6n16b - linestage noise problem
  4. OPT specs
  5. Re: Tube Line gain stage with pcc88 or ecc82
  6. Knight-kit KA-55
  7. Can I delay part of a B supply this way?
  8. Tube Preamp turn on circuit
  9. SE GM-70 for 700-800 euro?
  10. filter cap markings
  11. tube buffer noise cancellation
  12. PSUD 2
  13. Bypassing filter caps with Smaller caps
  14. balancing resister for series capacitor in a power supply
  15. Yaqin MC-100b- TJ Full Music 6sn7
  16. Forgive me for I have sinned. Help with Volume Pot!
  17. Help with diagnoses for leak 20 PLEASE
  18. Suggested Circuit Changes to use EM80 in place of 6E2 Eye
  19. Fred Nachbaur SET amp: input capacitor
  20. Heathkit scu 1 and knight kn924 needed schematics
  21. Journey to the centre of a tube..
  22. some questions about an ECL82 SE amp
  23. Heathkit Sine/Square wave Generator Manual needed!
  24. SRPP Signal Output Capacitors
  25. simple se input impedance
  26. Kt120 screen current
  27. New or used output xformers to play around with?
  28. Magnavox amp
  29. Help hooking up panel ammeter for bias adjust
  30. opt A-440
  31. OTL Headphone amplifier with Tube ED8000
  32. NJ7P Gone?
  33. MYSTERY METAL TUBES B-1532
  34. noisy tubes
  35. Old amp hum repair
  36. Traveling with DIY Kit in USA-Airport Security Question
  37. Hammond 1650P vs 1650N For EL34 PP
  38. Calibrate a Hickok 6000?
  39. Blown Output Tubes
  40. Kriesler Radiogram refurbishment questions
  41. 6P15P socket connection
  42. Revision 2. Balanced
  43. 6V6 schematic
  44. 6h23N test setting?
  45. 12AH7GT
  46. TUBE Tape Head record / playback amp....
  47. Strange couple comportament 6L6GC RCA black plates.
  48. Reduce Output Volume
  49. Differential Amp CCS Tail SVCS Plate - Noise Issues
  50. Triode curves for EL/PL519
  51. Is that a SRPP circuit with 6SN7?
  52. KT33 Push Pull
  53. Rogers Cadet III Integrated Amp Capacitor Values help
  54. 2a3 alternative after NOS burning
  55. 6SN7 SRPP - oscillating dc offset
  56. Hickok TV-2 'percent quality'
  57. Another Tube I/V converter/preamp for balanced DACs with SE output:build thread
  58. Aikido LV 48V ECC99 or 6N6p
  59. Project: Ultra Small 6C33 / Hybrid Stereo Headphone Amplifier
  60. Back to the tubes
  61. Any use for these PAECO transformer?
  62. Video lectures on tube amplifier design
  63. Millett PP or Allen Wright's PP-2c or?
  64. Magnavox 8608-10
  65. Time relay
  66. Help with Music Angel XD800MKIII mods!?
  67. Little Dot MKIII ??????
  68. Cathode follower wideband amplifier
  69. Wrong base ???
  70. My first DIY schematic... need eagle eyes.!
  71. Stubborn Noise/Oscillation - Another Call for Help
  72. help with power tranny
  73. Tube Amp Repair - SE Michigan
  74. ST 70 Power on!
  75. given choice of low screen voltage or low bias which sounds better or is it equal
  76. How many various OEM brands come from Shuguang?
  77. Bye for now! :)
  78. general power tube output impedance chart?
  79. Should I ground my ST 70?
  80. What is the biggest 300B tube? (Dimension)
  81. 6N16 Valve break-in time
  82. Mystery Amp.
  83. valves tungsten filament
  84. Musical Machine (triode PP EL34) question(s)
  85. M100 Output Tube Problem!
  86. Need to replace the power switch on an EAR 859
  87. Eico pentode vs triode VA
  88. gold grid 5881 - was I had?
  89. DN2540 CCS questions
  90. Operating point for pp KT88
  91. Low THD of Opt Cathode feedback
  92. No bias in S-5 12K, 8L, 16L, etc?
  93. Wanted...broken Golden Tube Audio SE-40
  94. Precise 116 Data Needed
  95. Can you bi-wire using two different taps
  96. Transient Responce of Williamson Amp build
  97. Tantalum caps in the filament supply?
  98. Assistance needed in reconstructing a Golden Tube Audio SE-40
  99. interesting power tube comparison chart
  100. 833A and 3-500Z Circuits
  101. Pilot SA-260 amp and Fischer 400C advice
  102. Long tailed pair phase inverter issues
  103. advice on changing bridge rectifier
  104. 21st Century Maida Regulator
  105. 6CA7 UL Push Pull Amp Design
  106. Tube recommendations anyone?
  107. WE 2C51 Date codes
  108. T500-1 - any ideas?
  109. hybrid power amp and more questions
  110. Yaqin MC-100B - not as powerful as advertised, but still a good value.
  111. 6CB5 AMP BUILD.
  112. ABB France SE OPT??
  113. heater wiring
  114. Audioromy FU29 improvement and upgrades?
  115. Need VFD display filament driver
  116. Power Transformer Limitations
  117. Yaqin 100b channel imbalance
  118. Grid stoppers in class AB2 push-pull arrangenets?
  119. Glass bead inside of KT88
  120. Find tube tester!
  121. mono block amps with 2 x 833C overkill ? even possible to DIY?
  122. happiness is a box of 6550 NOS tubes
  123. Taming the 83
  124. 6550 tube bias characters
  125. Tube Amp Squeel
  126. Bias help Music Angel L$, EL84
  127. Stubborn Oscillation
  128. Moderm "high watt" resistors seem too small
  129. Thyratron based emergency switch?
  130. vT4C.com out of business....
  131. Maggie 8802 6V6
  132. Need Counterpoint SA-3 Board Photo
  133. Diodes in a Graetz Hybrid
  134. Tube Noob with a few questions
  135. KT88 Push Pull Idea... Questions
  136. Superior Instruments tv11 restore question?
  137. Superior Instruments tv11 restore question?
  138. Frequency Response of Output Tubes
  139. symptom of a dying (gain) tube
  140. Grounding in monoblock amps
  141. Seeking 6ME5 data and connection diagram
  142. 12BK5 UL tracing gone boosted triode?
  143. Difference between OPT
  144. Tweaking PP AMP Suggestions Please
  145. DC coupled Sand 'n Glass with Current Feedback
  146. Yaqin 100B fire and spares
  147. Pls help with a preamp
  148. Questions about Aikdo all in one octal
  149. Did I get used to my amp's sound?
  150. Michaelson and Austin TVA1 revB
  151. Joy of birth - a new preamp brought to the world
  152. 5U4G
  153. 6N6P best musicality? Help with modes.
  154. Identifying this capacitor in my Cayin TA-30 amp
  155. GU50 Push-Pull version1
  156. Common mode feedback
  157. Stuck with repair ;(
  158. active hum cancellation. PCB idea?
  159. Why this huge cap is so light?
  160. OPT performance
  161. Tung Sol ECC803S reissue - thumbs down
  162. In a search for a 6CG7 line stage schematic
  163. Output stage for a Mono FM tube tuner
  164. Want to use El Cheapo P.I. for Scott LK72 rebuild
  165. TO220 isolation kits breakdown
  166. Schematic for Sony TC-200 tape unit
  167. HV power supply with serial chokes
  168. no logo on tube
  169. Tango XE-20-600S SE OPT for preamp ?
  170. RF Voltage Amplifier
  171. Anyone deal with psvane member here?
  172. Op Amp
  173. Imbalanced LTP using 6922/E88CC
  174. OPT choice for PP1C
  175. Drawing software for P2P layout?
  176. A hybrid amplifier with PCC88 and IRFP240/9240
  177. ARC D-75A Regulator tube
  178. cap upgrade worth it?
  179. valve/tube output transformer construction
  180. 300B (or other DHT) biasing options
  181. Cathode Bypass Capacitor concern
  182. Phase splitter into push pull front end - possible?
  183. Question on push-pull OT LEads
  184. Importance of Screen Voltage of Pentode???
  185. measuring dc offset in OTL headphone amp
  186. Seeking comments on Russian KBG-MN for PS
  187. Joe List Archive
  188. grundig tk45
  189. Grid bias - sound quality of battery or PSU?
  190. Help: Western Electric 418A tubes wire in triode ?
  191. Scott 355 Tuner-Preamp
  192. 6550 internal resistance hit parade
  193. Max anode voltage and srpp/aikido amps
  194. Effect of IERC coolers on SQ
  195. Tube standoff ?
  196. YAQIN MS-650B vs Yarland PRO 845 mkIV ?
  197. New Harman Kardon Citation II
  198. Conrad johnson Preamp Volume
  199. What's the benefit of dual NFB?
  200. Over-Spec'd PT as replacement.
  201. pp KT88, IT phase splitter
  202. ID this for me?
  203. 12AX7 in starving mode Dynaco PAS3X
  204. YAQIN MS-22B. Any thoughts, please?
  205. Heathkit A7E phono section
  206. Dyna-Quik 500
  207. Driving balanced outputs
  208. Primary current feedback - any good? Help!
  209. 3C30 tube...datasheet...help !!!
  210. LEDs on input valve cathodes
  211. Help with Conrad Johnson
  212. Output Transformer Power Rating Question
  213. Little piece of glass in tube.
  214. ASL Preamp Help
  215. Start to Salivate - My Tube Amp Candidates - Your thoughts welcome
  216. Citation V OPT Diagnosis/Question...
  217. Cossor BT185 Beam tetrode
  218. Using a non-bridge (2 diode) full wave rectifier in bias supply.
  219. Amp making phase shifter noise
  220. Help, Amp distortion after on/off/on???
  221. TDO 5w resistors?
  222. Audio Research Dual 75 - Low Bias
  223. 6N3 SRPP + 6N5P Cathode Follower HPA Testing
  224. 6N16 headphone amplifier
  225. 5k plate to plate, el34 triode strapped, 400v b+
  226. russian penthodes 6J2P-EB and 6J9P.
  227. mA meter drags the circuit down
  228. Valve stage coupling capacitor leakage?
  229. Carvin Transformer
  230. Modifying the Lowther Club HK Jazz 6L6 ($449 SET amp)
  231. RCA 6V6PP amp schematic (Schade fb)
  232. 25W Class A Hybrid Amp
  233. help testing gz32 gz34
  234. A BeamKido?
  235. Zeners and voltage regulation
  236. A2 positive bias push pull possible?
  237. EL34 burn out on Yaqin MC10T
  238. input transformer and impedance question
  239. Options for 300mA tube rectifiers
  240. Electrical flow
  241. 5AR4 @ 250mA
  242. newbie with a choke question
  243. ROCKOAL JUKEBOX 1458
  244. Who can help to recognize this tube preamp?
  245. DIY High power Audio Amplifier from Heathkit SB200
  246. ECL82 amplifier help
  247. 6146B SPICE model wanted
  248. how to install a bias meter in a cathode bias amp
  249. Stuck... Output tube for Single ended?
  250. Aikido Octal Headphone amp

Content Relevant URLs by vBSEO 3.3.2