View Full Version : Tubes (Valves)

Pages : [1] 2 3

  1. amperex tubes and mesa tri-axis
  2. Any love for the Mazda 6/30L2?
  3. Static Shield in isolation transformer
  4. Modifying Widow makers with an isolation transformer
  5. Uh Oh I think I blew it
  6. Vintage Tube Amp Modification
  7. TNT brand?
  8. Triode / Pentode Loadline Simulator
  9. Modern 5y3s
  10. 6V6 Screen Voltage in 5E1 Champ
  11. Mod'ing a tube circuit (from early 60's stereo turntable)
  12. Tube blog
  13. 6EU7 tube
  14. Telefunken Tubes?
  15. Which current production 12AX7 have short plates and spiral filaments?
  16. JJ 6CA7 a better option for 6L6 amps w/ excessive B+?
  17. 12AX7 What is Mu?
  18. Handy List of Links to New-Sensor Tube Data Sheets
  19. Cool old tubes for tone gurus
  20. 5G9 'clone' build question
  21. Blues Junior Buzzing
  22. JJ Tubes 12AX7/ECC83S Hum Problems Anyone?
  23. Off kilter 6v6.. any prob?
  24. Help identifying Hughes & Kettner CM3 Vacuum tube
  25. How tall are kt66 tubes in real life?
  26. Check this out
  27. Are new production EL34's just this bad or is there a problem in my amp I don't see?
  28. So I need some help for a new prototype.....
  29. Probably a really simple bias question
  30. Is JAN Sylvania 6L6WGB under rated the same as JAN Philips 6L6WGB?
  31. Fender pro junior bad transformer and red plating v3 tube
  32. Idea: singleton power tube trading forum?
  33. Aaron C
  34. Data sheet confusion for 12BY7-A
  35. sound city 120 - I may have 'highlighted' a fault !!!
  36. high screen voltage
  37. Preamp tubes with different triodes
  38. Help me Identify these Tubes!
  39. 6F12P
  40. Suggestions for 30-40v power supply for micro tubes.
  41. Laney IronHeart
  42. Matching tubes at home Q?
  43. Guild thunder 1 help
  44. Dropping B+ substantially
  45. tube /valve Biasing
  46. 6CA7 Current Draw Increases
  47. Viking tube radio to guitar amp
  48. JJ 6v6s spare pins.
  49. high gain amp attenuating
  50. Will this output transformer work?
  51. Homemade Tube Tester
  52. Eico HF-20 50's 6L6 UL HIFI amp, convert for guitar or just try to sell it?
  53. 6v6 Grid Bias Circuit.
  54. Bias test points.
  55. Antique Sound Lab 6L6 Tube Up For Adoption
  56. Fender Twin Reverb 65 Reissue 6L6 Tube Replacement
  57. Any new EL84's lately with better reject rates?
  58. Tung-Sol 5881 - Hard, Medium, Soft?
  59. Can someone look over my biasing data to see if I've got it right.
  60. Help with tube data sheet, ecll800
  61. Help with tube data sheet, ecll800
  62. resistors as inrush limiters before full-wave diodes?
  63. Calibrating Tube Testers
  64. 6L6 Build Suggestions
  65. 5R4GY longevity in tube amps
  66. 5U4GB tube rectifier flash
  67. 6j6 & similar...
  68. Re-bonding tube bases
  69. replacing 6w8's with separate pre and output tubes
  70. Replacing 6L6 with 6V6?
  71. One of these things is not like the others...
  72. Russian made Groove Tubes?
  73. Awesome tube tester/curve tracer
  74. Tone stack Mod for Bogen H30
  75. help identifying this tube
  76. 6L6--- which brand best keeps the fenders sound
  77. More Bass/Less Mid mod for a Sovtek Mig 50h
  78. EL84 tubes
  79. Source for 9-pin (preamp) tube bases???
  80. Just used a 16 years old new tubes.
  81. Shuguang 6L6WGC - any info
  82. hardware for blackface fender fix
  83. Model t tubes
  84. Anybody looked at tube perveance values?
  85. Tube Storage
  86. When did the American Tung Sol factory cease production?
  87. New production 12AX7
  88. CE Distribution - policy change coming for defective tubes
  89. Sinorussotubeaphobia
  90. Triplett 3444 testing of a 12AX7
  91. Variations in Filament intensity
  92. Used power tubes
  93. New production Mullard El34's
  94. Origin of the 6L6GC?
  95. Sovtek 6CA7 fat bottle 90s era
  96. ID tubes from 1968 Traynor YVM-1
  97. Thoughts on Tung Sol reissue 12AX7 and reliability?
  98. Plate voltage of NOS RCA and NOS Tung Sol??
  99. Old Sovtek EL34G, similar tube?
  100. Current production Sovtek EL84M
  101. 12AX7 tube for overdriven analog organ
  102. ECC83 clipping
  103. Can KT88's be used in my amp?
  104. JJ 6L6GCs... WTF?
  105. Please suggest KT88 tubes
  106. wurlitzer branded general electric grey plate 12ax7
  107. Power Tube Swap Extravaganza!
  108. need a source for 6KG6A/ EL509 tubes
  109. how long do these last?
  110. What is this tube ID?
  111. Avo valve tester questions.
  112. winged C vs Svetlana el34s?
  113. Mercury Rectifier Tubes
  114. boutique/back yard tube maker in Japan [Youtube]
  115. cathode by-pass in push pull six tube hifi amp
  116. Nuvistors - what do you think?
  117. Bias question - 6L6
  118. Adhesive for Repairing 6V6GT Base?
  119. 5763 Tetrode - what do you think?
  120. NOS Metal Can 6V6 Tube Quesiton
  121. Franks Electron Tube Data Sheets site down?
  122. Tube amps
  123. rf/audio screen voltage ratings
  124. Help with value vintage Line Transformer Altec 2282
  125. Suggest preamp tube (12AX7)
  126. Anyone used Sovtek 12ax7wa - Had one crack
  127. ID this Tube?
  128. what power amp is this and who made it ????need schmatic
  129. Recommendations for EL34 for 520V on the plate
  130. Anyone else having issues with Winged C EL34's?
  131. JJ 5Y3?
  132. Retrovalves
  133. Question For Other NOS Tube Junkies
  134. mismatched 6v6 pairs; cathode bias
  135. Article - Return of the Vacuum Tube
  136. Tube-Based Boiler Controller / Thermostat?
  137. Any experience with this tube vendor?
  138. Blackface Deluxe Reverb No bias current reading
  139. Fender Bassman 10 Bias adjust conversion
  140. Proper Tube Removal Process?
  141. dead output transformer
  142. Shuguang data sheets
  143. Ordered JJ's for my Bugera 333XL
  144. The Tube Shop - anyone shopped there?
  145. Which 12AX7 for my 18 watt plexi build ?
  146. 12AH7A info
  147. Changing tubes in a Crate vc5310
  148. Winged C 6L6GC + TubeDepot
  149. WANTED: 2 6N6 "metal can" vacuum tubes
  150. 50Watt Vintage tube PA Tubes?
  151. Northern Electric Tubes
  152. Fooprints (symbols) for tubes for Orcad PCB designer
  153. Sovtek 12AX7s
  154. Octal tubes and microphonics?
  155. Tube amplifier for headphones
  156. Any Opinions on Octal Preamp Tubes?
  157. Cryo treatment of metal things with music coming out of them
  158. JJ EL84 failure
  159. Anybody Know About Ballast Tubes?
  160. 21.5 watts from a Pair of EL84's?
  161. Strange 5AR4 "Problem"
  162. Is cathode bias the same thing as "self" bias?
  163. Rectifier tube question
  164. Who made the Groove Tube KT-66HP?
  165. Bugera 333XL 212 Combo Tube Questions
  166. Senior TC130 tube tester chart
  167. Difference between 5AR$ and 5Y3 as Tweed Deluxe rectifier
  168. What to do with one of a pair of matched tubes
  169. Most reliable current production 5AR4/GZ34?
  170. Please recommend me tubes for my Bassman
  171. Peavey classic 30
  172. EF86 too weak. is it true what they say?
  173. JJ 6L6GC
  174. Will changing from a 5U4GB to ? lower my DC voltages?
  175. New 6Sl7
  176. Best New Issue EL34
  177. Upgrading Epiphone Valve Junior to a 7591 SE design?
  178. 6Y6s.....any good for audio?
  179. My Handsome Devil head
  180. 6AR6WA v. 6L6GC?
  181. EF86-type Sonic Differences.....
  182. New Issue 6L6
  183. 12AX7 HUM
  184. 6U8/ECF82 shielding question
  185. 7581a in Fender amps?
  186. 12AY7 as a DC-coupled cathode follower
  187. Vox AC 100 Mk2
  188. Tung-Sol 6L6STR fragile bottle top
  189. ECF80 or ECF82 for AF?
  190. SED Winged C Prices Way Up
  191. Tube Lineage?
  192. 12ax7LP substitute
  193. Chinese tubes
  194. KT66 Pin 1 variations - which one is accurate?
  195. Tung-Sol RI 6V6 - opinions/experience?
  196. Presently manufactured power tubes
  197. Very elementary question/Sovtek etc.
  198. 807s?
  199. Miniwatt, yes or no?
  200. RCA - customers advice wanted
  201. Chinese and Russian tubes
  202. SS Tube replacements...
  203. Telefunken in Fender amps?
  204. 7868-EH tubes any good? (New Electro Harmonix)
  205. What are the best 6550/KT88 tubes for 2011?
  206. Gold Lions (English)____Anyone familiar?
  207. Bench-testing vintage power tubes?
  208. 6v6 and 6v6GT
  209. cleaning old dirty tubes?
  210. Tube labeling: Paint? Etched?
  211. help plz: identifying old tubes
  212. Baldwin 12AX7 Made in USA AMY 31 13 29
  213. tube test just for 12Ax7?
  214. Sovtek 5Y3GT--good tube?
  215. Are you kidding me!? Really!?
  216. 6SQ7 vs. 6SF5
  217. Anybody have a legible TC-142 schematic?
  218. Woolly guitar sound
  219. 12AX7 Mullard/Philips/Amperex NOS
  220. New JJ 5U4GB whines on warm up.
  221. 7591 vs 6V6
  222. Help me identify some 12ax7 tubes, please?
  223. What does it take to break a tube pin?
  224. EZ81, 6CA4, EL84 Question.
  225. Russian 6P3S
  226. 7868 tube
  227. Screens Still weak in EH6V6?
  228. ken-rad 6l6g and 6v6gc from 1948?
  229. Groove Tubes Marshall distortion Confusion!! lol.
  230. New 12AY7 vs 5751, can't hear the difference...!
  231. B&K 707 Tube Tester - Problem with emmissions test
  232. 6550,6L6,12AX7 and distortion question
  233. Tube question
  234. Any reason I shouldn't...
  235. Teonex
  236. Eurotubes=Bad News
  237. Svetlana factory seconds
  238. Free tube datasheets
  239. RCA 6L6's ?
  240. "Soot" Inside EL84/6BQ5
  241. JCM800 Preamp Clone - Wierd Distortion (oscilloscope pic)
  242. "Shield" brand 6BQ5 Torched Screen Resistors
  243. Preamp tubes
  244. Jan Philips 6L6WGB
  245. Mesa Boogie tubes
  246. R.I.P. CV4004.....Any tube sob stories?
  247. 5Y3 EZ81?
  248. Tube Slag
  249. my NOS 5y3 is not working. bad tube?
  250. Old Hammond Tubes??