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  1. EL84 SEP schematic. Some questions.
  2. Referencing DC heaters to cathode
  3. Need advice on Val Audio amp with EL-34 Tubes
  4. Please help a newbie with PSU current requirement for Aikido linestage
  5. Loudspeaker noise from 300B
  6. Schematic for GU-50, EL34, 6J32P ???
  7. alternative for heater / B+ references
  8. need a little help from some tube Gurus!!!
  9. EF86 + SPICE = no noise contribution?
  10. 6n1 tube = 6n1p
  11. One channel softer than the other, humming and buzzing
  12. Parallel Output Transformers
  13. Distortion from heater sag?
  14. Testing 5842 / 417a
  15. RH ECL86 Amp: Dave?
  16. High gain pentodes
  17. Tube Matching and Push-Pull
  18. What constitutes a leaky Coupling capacitor?
  19. Question on Input Connections
  20. s5electronics tube amp kit damping factor
  21. 6L6s and cabinet selections HELP!!!!
  22. source of nickel + silicon steel laminations
  23. Explanation for this problem?
  24. turn off thump
  25. Pop from amp when turning off
  26. Big Paper in Oil Caps
  27. Valve noobie asks for help / advice
  28. Polypropylene vs electrolytic in Power supply
  29. 6S4P vs 5842
  30. Calibrating Your Hickok Tube Tester
  31. Which 2A3 ?
  32. New design: 12V push-pull tube amplifier
  33. hybrid power supply: diode bridge into diode tube
  34. heater reference to B+ and buzzing trafo
  35. Hum cancelling scheme?
  36. Run a transformer backwards?
  37. FIVRE RRCF info needed
  38. Siemens Valvo ED-8000
  39. 6J5 and 6F6 SE - enough gain for guitar?
  40. My last Zamir Aleph
  41. Questions about first tube PSU!
  42. Looking for site
  43. Heater voltage mismatch
  44. Contacting Pete Millet for 813 PSU?
  45. Suggestions for first tube project?
  46. Just Saying Howdy
  47. Wiring a tube rectifier PSU
  48. Looking for a small yet powerful pentode / dual triode?
  49. Earth Bus Wire - Where can I get it?
  50. Tube Amp Startup
  51. 45 amplifier
  52. Noob saying Hi...
  53. Maida regulator
  54. Sensitivity limiter in Bogen MX60a
  55. Just finished first amp
  56. 6080 / 6AS7G power amplifier
  57. Schematics
  58. General questions before finishing up ST-35 clone
  59. Will a 12AX7 sub. for 12DW7/7247?
  60. Deutsche Wurlitzer Lyric Jukebox?
  61. Made in China buyer beware...
  62. Variac to power-up Beveridge OTLs?
  63. Any ideas on how old this is?
  64. Philips Tube radio
  65. Improve Avel toroid in OTL amp
  66. tube pre amp mods in queensland, australia
  67. 6SL7GT pre-amp
  68. Aikido circuit question
  69. question
  70. Edcor OPT's w/ SimpleSE
  71. Please check this PSU
  72. met. MKP in oil capacitors for PSU?
  73. EH EL34's at +600V?
  74. The Infamous Kay 703C! - Help finding an output transformer?
  75. MOT's as output transformers?
  76. Grain oriented silicon steel core data needed
  77. Gibson reverb driver transformer
  78. PSUD II help
  79. Edcor In SE Guitar Amp
  80. Tube curves
  81. S-5 electronics amp kits
  82. up-to-date El Cheapo schematic
  83. unknown output trannie
  84. Help needed with KT88 Amp design
  85. Bogen MX60a
  86. AIKIDO - Low-volage with buffer version
  87. 6N6P cascode calculation
  88. 866a Min operating voltages
  89. new 6V6 amp
  90. Tube-based CCS- 0.2uF cap OK?
  91. DHT filament PSU: What would you do?
  92. PSU problem
  93. 811A se amp using a solid state driver
  94. ECC83 - Long Plate vs Short Plate
  95. Tube Matching
  96. Cascoded mu-follower
  97. DIY speaker choice for SE
  98. Output transformer wanted
  99. big valve traffo for guitar amp?
  100. Tube Tester
  101. 835 amp
  102. One 300B filament supply for stereo?
  103. Aikido Built At Last!!
  104. Question about amount of feedback to apply
  105. design help needed.
  106. LED in cathode
  107. Need help for Eico 1030 regulated power supply
  108. zinc chassis
  109. Anode Cap Question
  110. what pins to use solid rectifier for 5Y3
  111. New PSU for Aikido?
  112. tube anti-vibration mounting
  113. Border Patrol PSU, can anyone help?
  114. Aikido Line Stage
  115. LED Bias Modifications
  116. danelectro vibravox
  117. Standby switch for bridge rectified power supplies.
  118. Decoupling in Phono stages.
  119. easy one valve pre help
  120. Single-ended-series amp with a "1 winding" transformer
  121. Complementary Symmetry Output
  122. Help getting these d$&* Dynascan probes apart!
  123. Aikido output cap selector switch
  124. adding an "on" lamp to amp kit
  125. Why does 6BM8 have so high max plate voltage?
  126. B+ soft start
  127. Unison research
  128. photos of my creations
  129. First Time Project - Finished! Photos Attached
  130. Design parameters for SE OPTs'
  131. want to build a pentode driven drd 2a3!
  132. Passive Magnetic Preamp!
  133. Testing an E288CC (8223)
  134. Need expert help on presence control
  135. Value of output caps for Aikido - how low is too low?
  136. Very expensive WE106A pre-amp, any member had this??
  137. B+ with or without tubes?
  138. 1st Time Project - Spot the howler
  139. Tube flashes on tester... Bad ?
  140. Amp advice needed for a poor DIY er...
  141. DCR of primaries and secondaries of Hammond Transformer
  142. 801 amp with Power Drive
  143. Where did this come from?
  144. 6N7S's PPP Class A
  145. your opinion needed.......
  146. ST-70 strangeness
  147. SS preamp w/ tube amp
  148. pri. impedance vs. sek. impedance
  149. TubeLab SimpleSe and speaker efficiency
  150. Question about speaker transformer
  151. How to read Russian Date Codes
  152. 300B Amp on ebay
  153. Would a 396A or 2C51 drive a 45?
  154. PSUD2 Q on regulator
  155. My last design
  156. Silvertone 1481 power transformer?
  157. OPT for 250th Se A2
  158. 829B, 3E29, QQV03-20 Connector
  159. Measuring from UK schematic but on US mains
  160. strange tube
  161. cathode resistor ?? in p-p fixed bias
  162. Need Help please . Headphones into line up of tube amp .
  163. 5Z4 inrush current too high
  164. Reducing gain on Audible Illusions M3A
  165. Decoding output transformers: strange SE's
  166. cheap and usable for 1K p-p iron?
  167. Help! Phono stage LF instability
  168. Help! Mesa Stiletto is motorboating and then fuse blows
  169. Faulty tube?
  170. Philbrick opamp bases
  171. Hammond Driver transformers
  172. 6n7/2a3
  173. Flea power for cheap OPT's?
  174. 1st Project - Half time report
  175. Claus Byrith 4-30 Questions
  176. quicksilver 8417 biasing
  177. 6sl7
  178. Trying to identify/find documentation on a 50EH5 amp
  179. Basic tests and measurements for OPTs
  180. 6SN7GT SRSE Linestage
  181. Dynaco Mark III
  182. Push Pull 300B preliminary
  183. triode thermodynamic model
  184. My first post!
  185. A Neophyte's 12B4 Build Thread
  186. Webster Hammond Model "G" amplifier
  187. Matching tubes- WE 396a/RFT EL34
  188. What is the most powerful AF tube amp ever built?
  189. SOHA Amp & PSU Layout, need feedback
  190. smoke came from transformer
  191. Startup Cost?
  192. Old or new output transformer?
  193. speaker magnet proximity Question
  194. Russian L3-3 tube tester
  195. I made a web page on building triode models /w CurveCaptor
  196. Boosted Triode mode?
  197. Unbalacing a PP output transformer?
  198. ecl86 & ez80 - suitable for guitar amp?
  199. Double C Cores
  200. Aikido Power Supply
  201. Output Noise question
  202. Power Supply Ringing
  203. Compare Sowter SA08 with Plitron 3035SE for 300B
  204. My 6C33C SING WITH No SPEAKER !
  205. MOSFET Driver for Power Pentodes
  206. Floating heater supplies
  207. Altec Amplifiers
  208. What causes the overrun bias on V4?
  209. sound comparison of Class A1 vs A2 amps
  210. 12AU7 substituted for a 6922
  211. Whats the worst that could happen?
  212. Ferranti transformers
  213. PC Cooling Fans for Tube Amps
  214. 845 circuit suggestions
  215. DIY Sofia tube tester?
  216. transformer hum / buzz getting into B+?
  217. Safe Transformerless Amps Possible?
  218. GM70 Lower Voltage PP Question
  219. phonostage with 150VDC B+
  220. Spuddo more powerfull
  221. Larry Moore 300B/10Y/6SN7GT
  222. Foreplay Preamp volume popping
  223. Altec Tube Amplifiers
  224. Circuit review
  225. DIY Tube Tester for 6336s
  226. 12dw7 to 12ax7 conversion?
  227. 26 preamp
  228. Etf07
  229. 1st Project Heater Wiring
  230. Dropped tube
  231. Great bench supply for tube work.
  232. Mullard px25 - need matched pair
  233. 2W carbon composit ressy
  234. popping noise through 1 channel on Radford STA15
  235. Point to point wiring help
  236. 1st Time Project - Report 2 + advice sought
  237. "Simple" 2A3
  238. vinyl v cd differences - phono pre and cd-player
  239. Shielded input cable
  240. knight guitar amp conversion
  241. Dumb motor run capacitor question
  242. Coupling caps in ST35
  243. Mentmore M100
  244. How to match tubes?
  245. Transcendent OTL T8 Vs. Atma-Sphere M60
  246. New 12AX7A Pspice model
  247. What does R2D2, Mickey Mouse and a...
  248. Why 5V filament
  249. Alloys for filaments
  250. 6360 as Power Tube for SE amp

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