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
  1. heater voltage
  2. kobayashi 300B push-pull
  3. Triode strapping a tetrode...
  4. Any info on 3572 Half wave Rectier
  5. Question Conrad Johnson reg. psu?
  6. Another 300B SE
  7. 7-pin Low Rp tube
  8. S-5 K-16LS Kit arrived in Germany !!
  9. Transcendar RIP?
  10. 6N6P in an Aikido?
  11. Were can i bay a Telefunken 6ak5 ?
  12. SE 245 driverstage
  13. 12ax7 srpp dac output
  14. How this circuit works (Baby Huey type)
  15. New tubeamp
  16. Snubber caps
  17. Counterpoint sa220
  18. Resistor before tube rectifier
  19. TCJ Push-Pull calculator v2
  20. Heathkit AG-9A audio generator schematic !!!
  21. Sources for James Transformers
  22. High Voltage Soldering (IPC Standards?)
  23. Speakers for Flea Powered Amps <1.5W
  24. Opinions on Allen & Bradley Carbon Composite resistors
  25. wich tube is best for the yaqin cd buffer ?
  26. Mikael Abdellah's SE KT88 bass response + tightness
  27. How best to use the PSU xformer I have
  28. 6L6GC AB2 Amp
  29. Kofi Annan in: "I'd Like Me a Mic Pre!"
  30. Too much gain - help with changing driver tube.
  31. EL95 SE schematic wanted
  32. test settings hickok i177B for 5ar4/gz34
  33. Gibson Ga-20 rvt reverb problems
  34. good value (i.e. cheap) OPT in uk?
  35. Input xfmr, diff stage, CCS questions
  36. Theoretical OPT question
  37. input/driver stage for kt88/6550
  38. thyratron switching
  39. Making component choices (6V6/EL84 PP)
  40. Which socket for a 5Y3??
  41. using #47 in p-p
  42. 6463-12b4a srpp?
  43. Need some help identifying which tubes are suitable
  44. Tube Priceing
  45. edcor output transformer advice
  46. Non top-cap tubes for plasma tweeters
  47. Intermittent Static on ARC REF 3 Preamp
  48. Have you guys seen this yet?
  49. ECC88 heater overvoltage damage?
  50. Recommended designs
  51. Aikido Phono PCB Modifications
  52. Need Power supply advice for Andreas 845
  53. Phonodude question
  54. Power Supply for Aikido Phono Pre
  55. Completed New Combo Amplifier
  56. Want to Build my first Tube Amp
  57. single tube amp ~pspice problem
  58. Modding a tonebone to switch to pentode triode operation?Can this be done??
  59. Relyon KT88/EL34 SE issue, schem attached
  60. Search 35T Schematic
  61. Hickok 600A, shattered mercury rectifier...
  62. Pete Millett Low-Mu Triode Preamp
  63. First scope/buying oscilloscope probes
  64. thyratron rectifier
  65. Need help making some choices on what to build
  66. A2 curves and curvecaptor.
  67. damper diodes ....
  68. Different Rectifier Warmup Times
  69. stupid question of the day
  70. Fisher 400 Output Transformers
  71. Tube amp repair
  72. Hi-end 845 with only two stage
  73. PL519 Heaters in series blow fuse
  74. Looking for parts to tinker with
  75. KT88 Recommendations?
  76. Anyone Interested in Pete Millett Hybrid Amp PCB's?
  77. Mirror of Steve Bench's site
  78. Quick Question About RCA Input
  79. Built an amp kit!
  80. Holy Smoking Toroid Winder
  81. Group Buy for Experimenter's 9 and 7 pin Tube Socket PCBs
  82. why do tubes have a treble lost ???
  83. Low Frequency Mains Noise
  84. Help modifying circuit
  85. Ever heard sth like this?
  86. dual volume control
  87. Need DIY help in Los Angeles area with tube preamp
  88. 6c19p se otl
  89. pt
  90. "Killer" Screen Driven Push-Pull Amp Initial Queries
  91. fixed vs. cathode bias
  92. RH84 Push pull?
  93. Cheapfield project
  94. heater connection problem
  95. What to do with this PP OPT?
  96. Question about Bridging
  97. White Fuzzy furry growth..........TV-2C/U
  98. Tweaks for 845 Power amp
  99. the aardvark grows a spud!
  100. WEST output transformers?
  101. Tube Buffer Success!
  102. Lafayette LA-234 Amplifier
  103. filter choke voltage rating
  104. Dealing with Mr. Miller (phono)
  105. Western Electric plant
  106. Pentod PP - too much NFB needed to sound nice?
  107. Lf351 replacement for Curcio Daniel I
  108. How bad is grounding one side of AC filament ?
  109. New matched tubes - where to use them
  110. Glow Tube (0B2) Help
  111. Bose 901 + Tube amps
  112. Tube tape NR
  113. Ming Da MC-34B fuse value?
  114. Potentiometer with bass boost pin for Simple SE?
  115. Volume pot for TubelabSE 300B recommendation ?
  116. (help) Make a 13.8V 50 Amp continueous current
  117. Toy amp.
  118. Looking to build a 25-30 WPC Push Pull amp - Need Help
  119. Quicksilver 8417 question
  120. GSM interference
  121. &lt;WTA&gt;Tube biased by LED
  122. source for knobs
  123. Lundahl 4-30 Build
  124. Anyone Have Info On Triode Board For MK IV?
  125. I would like to DIY Marantz model9
  126. 813se DIY OPT problems
  127. Got a big output trafo I want to use.
  128. building S5 k-amp
  129. EL84 max power for HiFi Amp
  130. Question about cathode bypass capacitor:
  131. Curcio Daniel II builders?
  132. 13E1 SE design
  133. Booster Amp for low powered SET
  134. Soft starting the rectifier
  135. Tube preamp components help
  136. My own version of the EAR 834P Clone
  137. Eico HF86 modifications
  138. Heaters and centre tap
  139. DHT's, fixed bias, sharred filament supply
  140. Do New JJ GZ34's have less B+ Drop?
  141. Grounded, Floating, or Thermistor-To-Case for Center Tap
  142. Hi, looking for some info on tube amplifier design basics
  143. Nifty little (cheap ) transformer for bias supply
  144. Problems with my ARC VT 130SE
  145. Telefunken V69B - Tube Amp
  146. HV Regulator
  147. EL95 mini SE
  148. NOS vs. Chinese Plate Caps
  149. TL783 regulated B+ 250V PSU schematic
  150. Tube buffer for electronic keyboards used in a band?
  151. 6922 tube buffer
  152. 300B grid resistance
  153. 6AU6 Aikido in Triode mode?
  154. brown crud?
  155. Steve Bench's tube crossover
  156. Bogen M120 bass guitar amp coversion
  157. Wierd striation on 6L6GC plate
  158. LT1085-based regulated 6.3v heater supply
  159. Are these tubes cooked?
  160. New Build Power Up Advice
  161. Mic pre idea
  162. Choosing the right mullard design to match the Foreplay III and Ariels
  163. Dumb question on Coupling cap ratings...
  164. European Triode Festival 2008 - couple of seats left
  165. Building PRETOR toroid preamp
  166. ACT2 - ConradJohnson by 818design
  167. PS questions?
  168. Frank's Tube Database Down?
  169. Anybody try Euro DHTs like RE134, RE304 etc??
  170. Need help...again :)
  171. idea for a simple bias servo for AB PP
  172. GU-32/GI-30 tube PP amp
  173. Switch-mode PSU for tube heaters?
  174. Hammond Primary Lead color is wrong?
  175. A newbie need helps on the very 1st tube PreAmp
  176. why does 12u7 need certain amount of gain to stop hum 120???
  177. EL34 Pushpull imbalance
  178. Tube Preamp Popping on Source Input Change (?) / 6DJ8 Preamp On Chip Amps
  179. Rozenblit Grounded Grid Cascode Pho Preamp Project
  180. Driving the kt88/6550 in set mode
  181. 6550a question for engineer?
  182. Yl1260
  183. Parts layout diagram for SE amp
  184. Da 42 Triode
  185. Bogen CHB100 Power Supply Question
  186. Testing of russian tubes on B&K 747B
  187. VR150 use
  188. First Valve DIY Project
  189. I'm having grid1 current in EL34
  190. anyone ever built a tube mixer similar to the RCA Living Stereo type??
  191. SEPTOR AT-amp (Anti-Triode) being built
  192. Sophia Electric el34 mods/upgrades
  193. Looking to build....
  194. Bias resistor for source follower driver
  195. PL 519 electrical characteristics
  196. Settings for testing 2C51/5670/396A on B&K Model 600 Dyna Quik
  197. My 6AS7G Fuse Link Checker
  198. Anyone ever had issues with One Electron?
  199. 35% off sale at RadioDaze
  200. phase splitter with Tr ?
  201. Chasing my Simple SE problem...
  202. Zenith stereo, EL84 SE. What to do...
  203. Free TVA-1 rev.3 schematic
  204. Bat Vk-60
  205. Trouble with amp 6V6
  206. 5-125 UL curves anyone?
  207. Mod it or scrap it?
  208. Bogen M330
  209. 1st Tube Amp - What to build?
  210. 6J5 weird phase inverter
  211. swinging CCS PP output stage
  212. Varying 2 tube amp characteristics: SE treble and richness
  213. Jadis Defy 7 Schematic
  214. microphonic sub-miniature tubes?
  215. Transformer distortion (THD)
  216. Options for replacing EF86? E180F?
  217. changing an integrated tube amp to a power amp
  218. Nice tube test supply
  219. Looking for 300B 2.5V heater vendor
  220. Cap to bypass bias battery
  221. 2A3 SE parafeed with PP-transformer
  222. Preamp Voltages
  223. TVA-1 "Export" circuit/schematic?
  224. 12ax7 series is this correct??
  225. Yet Another Phono Stage Suggestions Thread
  226. 15% off sale at Soniccraft
  227. Bias Mode Switching Question (guitar Amp)
  228. Sizing Coupling Capacitors
  229. budget xformer for 829B pentode mode PP (class AB) ?
  230. preamp layout suggestions please
  231. Capacitors and hype!
  232. Transofrmer secondaries
  233. please help 407a
  234. OPT Grounding / Crosstalk
  235. SE With shared Rk in output
  236. Unsolved problem EL34/12AT7/5AR4
  237. Radford STA25 service UK
  238. My tube DIY Web page, translate into English
  239. suggestion about AIKIDO PRE
  240. jackson tube tester 648s manuals
  241. Hashimoto A-105 - 6S4A
  242. Looking For Counterpoint SA2000 Schematic
  243. Where do you put the standby switch
  244. Simple SE Schematic
  245. Operating point for 6GK5
  246. Audio Research St-70-c3
  247. Help identifying tube amp
  248. Ed8000
  249. power suply for Pre &amp; Phono Use tube 6BM8
  250. ESLDD with "anti-triode"