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

  1. 4033L- rare triode tube.
  2. Single tube linestage schematic wanted: 8CG7
  3. Tetra Sans PS
  4. Tone controls
  5. Vintage Heathkit Electronic Switch as soundcard interface
  6. K-12M extra caps??
  7. Looking for Tube Amp Kit Recommendations
  8. magnatone 280 schematic
  9. high voltage after cap. change
  10. My first tube amp
  11. Recommendations for 6888 triode operating point?
  12. Mullard 12AX7 part uniformity
  13. 6n15n-EB confusion
  14. Noob Question: Phono Preamp
  15. Transformer data required P782
  16. Snubbers on Power Transformer Secondaries
  17. CCS for 6V6 PP amp
  18. screen voltage for triode strapped pentode
  19. New Driver
  20. purpose and value importance of resistor
  21. Values for Vintage Amp's & Preamp's Paragon 12(70's) & More
  22. Help with amp please.
  23. Another Discrete Current Source
  24. 834 Triode amp
  25. Determing the reason for mystery? cap in schematic.
  26. Dyna ST70 to Dual-differential EL34 triode amp project
  27. Tube Signal to Noise Ratio / Dynamic Range
  28. fluctating bias
  29. Just tried a Wire Wound pot for volume.
  30. LED's in the cathode..
  31. Dr. Arthur Loesch
  32. Counterpoint SA-220 mods
  33. Broskie P-P Bridged Output Stage
  34. Would a member fluent in technical German please have a look at this link?
  35. Damaged tube? EL84
  36. Heathkit AA-161 EL84/6BQ5 PP mono integrated amp mod
  37. vk-2100 mod question please
  38. Heater supply
  39. 6111/6n16b - linestage noise problem
  40. OPT specs
  41. Re: Tube Line gain stage with pcc88 or ecc82
  42. Knight-kit KA-55
  43. Can I delay part of a B supply this way?
  44. Tube Preamp turn on circuit
  45. SE GM-70 for 700-800 euro?
  46. filter cap markings
  47. tube buffer noise cancellation
  48. PSUD 2
  49. Bypassing filter caps with Smaller caps
  50. balancing resister for series capacitor in a power supply
  51. Yaqin MC-100b- TJ Full Music 6sn7
  52. Forgive me for I have sinned. Help with Volume Pot!
  53. Help with diagnoses for leak 20 PLEASE
  54. Suggested Circuit Changes to use EM80 in place of 6E2 Eye
  55. Fred Nachbaur SET amp: input capacitor
  56. Heathkit scu 1 and knight kn924 needed schematics
  57. Journey to the centre of a tube..
  58. RIP Dr Jim Marshall
  59. some questions about an ECL82 SE amp
  60. Heathkit Sine/Square wave Generator Manual needed!
  61. SRPP Signal Output Capacitors
  62. simple se input impedance
  63. Kt120 screen current
  64. New or used output xformers to play around with?
  65. Magnavox amp
  66. Help hooking up panel ammeter for bias adjust
  67. opt A-440
  68. OTL Headphone amplifier with Tube ED8000
  69. NJ7P Gone?
  70. MYSTERY METAL TUBES B-1532
  71. noisy tubes
  72. Old amp hum repair
  73. Traveling with DIY Kit in USA-Airport Security Question
  74. Hammond 1650P vs 1650N For EL34 PP
  75. Calibrate a Hickok 6000?
  76. Blown Output Tubes
  77. Kriesler Radiogram refurbishment questions
  78. 6P15P socket connection
  79. Revision 2. Balanced
  80. 6V6 schematic
  81. 6h23N test setting?
  82. 12AH7GT
  83. TUBE Tape Head record / playback amp....
  84. Strange couple comportament 6L6GC RCA black plates.
  85. Reduce Output Volume
  86. Differential Amp CCS Tail SVCS Plate - Noise Issues
  87. Triode curves for EL/PL519
  88. Is that a SRPP circuit with 6SN7?
  89. KT33 Push Pull
  90. Rogers Cadet III Integrated Amp Capacitor Values help
  91. 2a3 alternative after NOS burning
  92. 6SN7 SRPP - oscillating dc offset
  93. Hickok TV-2 'percent quality'
  94. Another Tube I/V converter/preamp for balanced DACs with SE output:build thread
  95. Aikido LV 48V ECC99 or 6N6p
  96. Project: Ultra Small 6C33 / Hybrid Stereo Headphone Amplifier
  97. Back to the tubes
  98. Any use for these PAECO transformer?
  99. Video lectures on tube amplifier design
  100. Millett PP or Allen Wright's PP-2c or?
  101. Magnavox 8608-10
  102. Time relay
  103. Help with Music Angel XD800MKIII mods!?
  104. Little Dot MKIII ??????
  105. Cathode follower wideband amplifier
  106. Wrong base ???
  107. My first DIY schematic... need eagle eyes.!
  108. Stubborn Noise/Oscillation - Another Call for Help
  109. help with power tranny
  110. Tube Amp Repair - SE Michigan
  111. ST 70 Power on!
  112. given choice of low screen voltage or low bias which sounds better or is it equal
  113. How many various OEM brands come from Shuguang?
  114. Bye for now! :)
  115. general power tube output impedance chart?
  116. Should I ground my ST 70?
  117. What is the biggest 300B tube? (Dimension)
  118. 6N16 Valve break-in time
  119. Mystery Amp.
  120. valves tungsten filament
  121. Musical Machine (triode PP EL34) question(s)
  122. M100 Output Tube Problem!
  123. Need to replace the power switch on an EAR 859
  124. Eico pentode vs triode VA
  125. gold grid 5881 - was I had?
  126. DN2540 CCS questions
  127. Operating point for pp KT88
  128. Low THD of Opt Cathode feedback
  129. No bias in S-5 12K, 8L, 16L, etc?
  130. Wanted...broken Golden Tube Audio SE-40
  131. Precise 116 Data Needed
  132. Can you bi-wire using two different taps
  133. Transient Responce of Williamson Amp build
  134. Tantalum caps in the filament supply?
  135. Assistance needed in reconstructing a Golden Tube Audio SE-40
  136. interesting power tube comparison chart
  137. 833A and 3-500Z Circuits
  138. Pilot SA-260 amp and Fischer 400C advice
  139. Long tailed pair phase inverter issues
  140. advice on changing bridge rectifier
  141. 21st Century Maida Regulator
  142. 6CA7 UL Push Pull Amp Design
  143. Tube recommendations anyone?
  144. WE 2C51 Date codes
  145. T500-1 - any ideas?
  146. hybrid power amp and more questions
  147. Yaqin MC-100B - not as powerful as advertised, but still a good value.
  148. 6CB5 AMP BUILD.
  149. ABB France SE OPT??
  150. heater wiring
  151. Audioromy FU29 improvement and upgrades?
  152. Need VFD display filament driver
  153. Power Transformer Limitations
  154. Yaqin 100b channel imbalance
  155. Grid stoppers in class AB2 push-pull arrangenets?
  156. Glass bead inside of KT88
  157. Find tube tester!
  158. mono block amps with 2 x 833C overkill ? even possible to DIY?
  159. happiness is a box of 6550 NOS tubes
  160. Taming the 83
  161. 6550 tube bias characters
  162. Tube Amp Squeel
  163. Bias help Music Angel L$, EL84
  164. Stubborn Oscillation
  165. Moderm "high watt" resistors seem too small
  166. Thyratron based emergency switch?
  167. vT4C.com out of business....
  168. Maggie 8802 6V6
  169. Need Counterpoint SA-3 Board Photo
  170. Diodes in a Graetz Hybrid
  171. Tube Noob with a few questions
  172. KT88 Push Pull Idea... Questions
  173. Superior Instruments tv11 restore question?
  174. Superior Instruments tv11 restore question?
  175. Frequency Response of Output Tubes
  176. symptom of a dying (gain) tube
  177. Grounding in monoblock amps
  178. Seeking 6ME5 data and connection diagram
  179. 12BK5 UL tracing gone boosted triode?
  180. Difference between OPT
  181. Tweaking PP AMP Suggestions Please
  182. DC coupled Sand 'n Glass with Current Feedback
  183. Yaqin 100B fire and spares
  184. Pls help with a preamp
  185. Questions about Aikdo all in one octal
  186. Did I get used to my amp's sound?
  187. Michaelson and Austin TVA1 revB
  188. Joy of birth - a new preamp brought to the world
  189. 5U4G
  190. 6N6P best musicality? Help with modes.
  191. Identifying this capacitor in my Cayin TA-30 amp
  192. GU50 Push-Pull version1
  193. Common mode feedback
  194. Stuck with repair ;(
  195. active hum cancellation. PCB idea?
  196. Why this huge cap is so light?
  197. OPT performance
  198. Capacitor WVDC. is higher really better?
  199. Tung Sol ECC803S reissue - thumbs down
  200. Biasing Marshall 9200
  201. In a search for a 6CG7 line stage schematic
  202. Output stage for a Mono FM tube tuner
  203. Want to use El Cheapo P.I. for Scott LK72 rebuild
  204. Ansar caps
  205. TO220 isolation kits breakdown
  206. Schematic for Sony TC-200 tape unit
  207. HV power supply with serial chokes
  208. no logo on tube
  209. Tango XE-20-600S SE OPT for preamp ?
  210. RF Voltage Amplifier
  211. Anyone deal with psvane member here?
  212. Op Amp
  213. Imbalanced LTP using 6922/E88CC
  214. OPT choice for PP1C
  215. Drawing software for P2P layout?
  216. A hybrid amplifier with PCC88 and IRFP240/9240
  217. ARC D-75A Regulator tube
  218. cap upgrade worth it?
  219. valve/tube output transformer construction
  220. 300B (or other DHT) biasing options
  221. Cathode Bypass Capacitor concern
  222. Phase splitter into push pull front end - possible?
  223. Question on push-pull OT LEads
  224. Importance of Screen Voltage of Pentode???
  225. measuring dc offset in OTL headphone amp
  226. Seeking comments on Russian KBG-MN for PS
  227. Joe List Archive
  228. grundig tk45
  229. Grid bias - sound quality of battery or PSU?
  230. Help: Western Electric 418A tubes wire in triode ?
  231. Scott 355 Tuner-Preamp
  232. 6550 internal resistance hit parade
  233. Max anode voltage and srpp/aikido amps
  234. Effect of IERC coolers on SQ
  235. Tube standoff ?
  236. YAQIN MS-650B vs Yarland PRO 845 mkIV ?
  237. New Harman Kardon Citation II
  238. Conrad johnson Preamp Volume
  239. What's the benefit of dual NFB?
  240. Over-Spec'd PT as replacement.
  241. pp KT88, IT phase splitter
  242. ID this for me?
  243. 12AX7 in starving mode Dynaco PAS3X
  244. YAQIN MS-22B. Any thoughts, please?
  245. Heathkit A7E phono section
  246. Dyna-Quik 500
  247. Driving balanced outputs
  248. Primary current feedback - any good? Help!
  249. 3C30 tube...datasheet...help !!!
  250. LEDs on input valve cathodes

Content Relevant URLs by vBSEO 3.3.2