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  1. Please critique my plans for a WE91 clone.
  2. Emission Labs 300B Mesh plate
  3. DRD Power Supply
  4. Octal Champ works - pls check design
  5. telefunken EL 34 audio tube
  6. Bias instability in Heathkit W-5M amp
  7. EL-34 instability in EICO HF-35 amp
  8. Russian paper in oil caps - any good?
  9. Matching Impedances
  10. Open-Source Audio Input Switch
  11. Phono pre amp RF problem
  12. Best CHEAP + best BEST current production EL34?
  13. New toy
  14. EL84 SEP schematic. Some questions.
  15. Referencing DC heaters to cathode
  16. Need advice on Val Audio amp with EL-34 Tubes
  17. Please help a newbie with PSU current requirement for Aikido linestage
  18. Loudspeaker noise from 300B
  19. Schematic for GU-50, EL34, 6J32P ???
  20. alternative for heater / B+ references
  21. need a little help from some tube Gurus!!!
  22. EF86 + SPICE = no noise contribution?
  23. 6n1 tube = 6n1p
  24. One channel softer than the other, humming and buzzing
  25. Parallel Output Transformers
  26. Distortion from heater sag?
  27. Testing 5842 / 417a
  28. RH ECL86 Amp: Dave?
  29. High gain pentodes
  30. Tube Matching and Push-Pull
  31. What constitutes a leaky Coupling capacitor?
  32. Question on Input Connections
  33. s5electronics tube amp kit damping factor
  34. 6L6s and cabinet selections HELP!!!!
  35. source of nickel + silicon steel laminations
  36. Explanation for this problem?
  37. turn off thump
  38. Pop from amp when turning off
  39. Big Paper in Oil Caps
  40. Valve noobie asks for help / advice
  41. Polypropylene vs electrolytic in Power supply
  42. 6S4P vs 5842
  43. Calibrating Your Hickok Tube Tester
  44. Which 2A3 ?
  45. New design: 12V push-pull tube amplifier
  46. hybrid power supply: diode bridge into diode tube
  47. heater reference to B+ and buzzing trafo
  48. Hum cancelling scheme?
  49. Run a transformer backwards?
  50. FIVRE RRCF info needed
  51. Siemens Valvo ED-8000
  52. 6J5 and 6F6 SE - enough gain for guitar?
  53. My last Zamir Aleph
  54. Questions about first tube PSU!
  55. Looking for site
  56. Heater voltage mismatch
  57. Contacting Pete Millet for 813 PSU?
  58. Suggestions for first tube project?
  59. Just Saying Howdy
  60. Wiring a tube rectifier PSU
  61. Looking for a small yet powerful pentode / dual triode?
  62. Earth Bus Wire - Where can I get it?
  63. Tube Amp Startup
  64. 45 amplifier
  65. Noob saying Hi...
  66. Maida regulator
  67. Sensitivity limiter in Bogen MX60a
  68. Just finished first amp
  69. 6080 / 6AS7G power amplifier
  70. Schematics
  71. General questions before finishing up ST-35 clone
  72. Will a 12AX7 sub. for 12DW7/7247?
  73. Deutsche Wurlitzer Lyric Jukebox?
  74. Made in China buyer beware...
  75. Variac to power-up Beveridge OTLs?
  76. Any ideas on how old this is?
  77. Philips Tube radio
  78. Improve Avel toroid in OTL amp
  79. tube pre amp mods in queensland, australia
  80. 6SL7GT pre-amp
  81. Aikido circuit question
  82. question
  83. Edcor OPT's w/ SimpleSE
  84. Please check this PSU
  85. met. MKP in oil capacitors for PSU?
  86. EH EL34's at +600V?
  87. The Infamous Kay 703C! - Help finding an output transformer?
  88. MOT's as output transformers?
  89. Grain oriented silicon steel core data needed
  90. Gibson reverb driver transformer
  91. PSUD II help
  92. Edcor In SE Guitar Amp
  93. Tube curves
  94. S-5 electronics amp kits
  95. up-to-date El Cheapo schematic
  96. unknown output trannie
  97. Help needed with KT88 Amp design
  98. Bogen MX60a
  99. AIKIDO - Low-volage with buffer version
  100. 6N6P cascode calculation
  101. 866a Min operating voltages
  102. new 6V6 amp
  103. Tube-based CCS- 0.2uF cap OK?
  104. DHT filament PSU: What would you do?
  105. PSU problem
  106. 811A se amp using a solid state driver
  107. ECC83 - Long Plate vs Short Plate
  108. Tube Matching
  109. Cascoded mu-follower
  110. DIY speaker choice for SE
  111. Output transformer wanted
  112. big valve traffo for guitar amp?
  113. Tube Tester
  114. 835 amp
  115. One 300B filament supply for stereo?
  116. Aikido Built At Last!!
  117. Question about amount of feedback to apply
  118. design help needed.
  119. LED in cathode
  120. Need help for Eico 1030 regulated power supply
  121. zinc chassis
  122. Anode Cap Question
  123. what pins to use solid rectifier for 5Y3
  124. New PSU for Aikido?
  125. tube anti-vibration mounting
  126. Border Patrol PSU, can anyone help?
  127. Aikido Line Stage
  128. LED Bias Modifications
  129. danelectro vibravox
  130. Standby switch for bridge rectified power supplies.
  131. Decoupling in Phono stages.
  132. easy one valve pre help
  133. Single-ended-series amp with a "1 winding" transformer
  134. Complementary Symmetry Output
  135. Help getting these d$&* Dynascan probes apart!
  136. Aikido output cap selector switch
  137. adding an "on" lamp to amp kit
  138. Why does 6BM8 have so high max plate voltage?
  139. B+ soft start
  140. Unison research
  141. photos of my creations
  142. First Time Project - Finished! Photos Attached
  143. Design parameters for SE OPTs'
  144. want to build a pentode driven drd 2a3!
  145. Passive Magnetic Preamp!
  146. Testing an E288CC (8223)
  147. Need expert help on presence control
  148. Value of output caps for Aikido - how low is too low?
  149. Very expensive WE106A pre-amp, any member had this??
  150. B+ with or without tubes?
  151. 1st Time Project - Spot the howler
  152. Tube flashes on tester... Bad ?
  153. Amp advice needed for a poor DIY er...
  154. DCR of primaries and secondaries of Hammond Transformer
  155. 801 amp with Power Drive
  156. Where did this come from?
  157. 6N7S's PPP Class A
  158. your opinion needed.......
  159. ST-70 strangeness
  160. SS preamp w/ tube amp
  161. pri. impedance vs. sek. impedance
  162. TubeLab SimpleSe and speaker efficiency
  163. Question about speaker transformer
  164. How to read Russian Date Codes
  165. 300B Amp on ebay
  166. Would a 396A or 2C51 drive a 45?
  167. PSUD2 Q on regulator
  168. My last design
  169. Silvertone 1481 power transformer?
  170. OPT for 250th Se A2
  171. 829B, 3E29, QQV03-20 Connector
  172. Measuring from UK schematic but on US mains
  173. strange tube
  174. cathode resistor ?? in p-p fixed bias
  175. Need Help please . Headphones into line up of tube amp .
  176. 5Z4 inrush current too high
  177. Reducing gain on Audible Illusions M3A
  178. Decoding output transformers: strange SE's
  179. cheap and usable for 1K p-p iron?
  180. Help! Phono stage LF instability
  181. Help! Mesa Stiletto is motorboating and then fuse blows
  182. Faulty tube?
  183. Philbrick opamp bases
  184. Hammond Driver transformers
  185. 6n7/2a3
  186. Flea power for cheap OPT's?
  187. 1st Project - Half time report
  188. Claus Byrith 4-30 Questions
  189. quicksilver 8417 biasing
  190. 6sl7
  191. Trying to identify/find documentation on a 50EH5 amp
  192. Basic tests and measurements for OPTs
  193. 6SN7GT SRSE Linestage
  194. Dynaco Mark III
  195. Push Pull 300B preliminary
  196. triode thermodynamic model
  197. My first post!
  198. A Neophyte's 12B4 Build Thread
  199. Webster Hammond Model "G" amplifier
  200. Matching tubes- WE 396a/RFT EL34
  201. What is the most powerful AF tube amp ever built?
  202. SOHA Amp & PSU Layout, need feedback
  203. smoke came from transformer
  204. Startup Cost?
  205. Old or new output transformer?
  206. speaker magnet proximity Question
  207. Russian L3-3 tube tester
  208. I made a web page on building triode models /w CurveCaptor
  209. Boosted Triode mode?
  210. Unbalacing a PP output transformer?
  211. ecl86 & ez80 - suitable for guitar amp?
  212. Double C Cores
  213. Aikido Power Supply
  214. Output Noise question
  215. Power Supply Ringing
  216. Compare Sowter SA08 with Plitron 3035SE for 300B
  217. My 6C33C SING WITH No SPEAKER !
  218. MOSFET Driver for Power Pentodes
  219. Floating heater supplies
  220. Altec Amplifiers
  221. What causes the overrun bias on V4?
  222. sound comparison of Class A1 vs A2 amps
  223. 12AU7 substituted for a 6922
  224. Whats the worst that could happen?
  225. Ferranti transformers
  226. PC Cooling Fans for Tube Amps
  227. 845 circuit suggestions
  228. DIY Sofia tube tester?
  229. transformer hum / buzz getting into B+?
  230. Safe Transformerless Amps Possible?
  231. GM70 Lower Voltage PP Question
  232. phonostage with 150VDC B+
  233. Spuddo more powerfull
  234. Larry Moore 300B/10Y/6SN7GT
  235. Foreplay Preamp volume popping
  236. Altec Tube Amplifiers
  237. Circuit review
  238. DIY Tube Tester for 6336s
  239. 12dw7 to 12ax7 conversion?
  240. 26 preamp
  241. Etf07
  242. 1st Project Heater Wiring
  243. Dropped tube
  244. Great bench supply for tube work.
  245. Mullard px25 - need matched pair
  246. 2W carbon composit ressy
  247. popping noise through 1 channel on Radford STA15
  248. Point to point wiring help
  249. 1st Time Project - Report 2 + advice sought
  250. "Simple" 2A3

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