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  1. magnavox tube radio
  2. New S5 L series kits
  3. Anyone has experience with Stranwood
  4. 6n6p amp
  5. DC Darling Amp Buzzing on both channels.
  6. 6SL7 EL34 300B amp
  7. I just installed Yeos (DIY Paradise) DC Blocker
  8. Measuring Cathode Current
  9. Need the Ogirin Circuit of Bruce Berman
  10. Input Choke Too Small
  11. Would a line stage/preamp be beneficial? NEWBIE question
  12. 6p45c
  13. fanon pa amp schematic
  14. line stage confusion
  15. Hammond Transformer Secondary Connections
  16. Klimo Merlin LS Tube Power Supply
  17. OPT Design Assistante (EL84)
  18. Hum - can't find an answer by searching the forum
  19. Please critique my plans for a WE91 clone.
  20. Emission Labs 300B Mesh plate
  21. DRD Power Supply
  22. Octal Champ works - pls check design
  23. telefunken EL 34 audio tube
  24. Bias instability in Heathkit W-5M amp
  25. EL-34 instability in EICO HF-35 amp
  26. Matching Impedances
  27. Phono pre amp RF problem
  28. Best CHEAP + best BEST current production EL34?
  29. New toy
  30. EL84 SEP schematic. Some questions.
  31. Referencing DC heaters to cathode
  32. Need advice on Val Audio amp with EL-34 Tubes
  33. Please help a newbie with PSU current requirement for Aikido linestage
  34. Loudspeaker noise from 300B
  35. Schematic for GU-50, EL34, 6J32P ???
  36. alternative for heater / B+ references
  37. need a little help from some tube Gurus!!!
  38. EF86 + SPICE = no noise contribution?
  39. 6n1 tube = 6n1p
  40. One channel softer than the other, humming and buzzing
  41. Parallel Output Transformers
  42. Distortion from heater sag?
  43. Testing 5842 / 417a
  44. RH ECL86 Amp: Dave?
  45. High gain pentodes
  46. Tube Matching and Push-Pull
  47. Question on Input Connections
  48. s5electronics tube amp kit damping factor
  49. 6L6s and cabinet selections HELP!!!!
  50. source of nickel + silicon steel laminations
  51. Explanation for this problem?
  52. turn off thump
  53. Pop from amp when turning off
  54. Valve noobie asks for help / advice
  55. Polypropylene vs electrolytic in Power supply
  56. 6S4P vs 5842
  57. Which 2A3 ?
  58. New design: 12V push-pull tube amplifier
  59. hybrid power supply: diode bridge into diode tube
  60. heater reference to B+ and buzzing trafo
  61. Hum cancelling scheme?
  62. Run a transformer backwards?
  63. FIVRE RRCF info needed
  64. Siemens Valvo ED-8000
  65. My last Zamir Aleph
  66. Questions about first tube PSU!
  67. Looking for site
  68. Heater voltage mismatch
  69. Contacting Pete Millet for 813 PSU?
  70. Suggestions for first tube project?
  71. Just Saying Howdy
  72. Wiring a tube rectifier PSU
  73. Looking for a small yet powerful pentode / dual triode?
  74. Earth Bus Wire - Where can I get it?
  75. Tube Amp Startup
  76. 45 amplifier
  77. Noob saying Hi...
  78. Maida regulator
  79. Just finished first amp
  80. 6080 / 6AS7G power amplifier
  81. Schematics
  82. General questions before finishing up ST-35 clone
  83. Will a 12AX7 sub. for 12DW7/7247?
  84. Deutsche Wurlitzer Lyric Jukebox?
  85. Made in China buyer beware...
  86. Variac to power-up Beveridge OTLs?
  87. Any ideas on how old this is?
  88. Philips Tube radio
  89. Improve Avel toroid in OTL amp
  90. tube pre amp mods in queensland, australia
  91. 6SL7GT pre-amp
  92. Aikido circuit question
  93. question
  94. Edcor OPT's w/ SimpleSE
  95. Please check this PSU
  96. met. MKP in oil capacitors for PSU?
  97. EH EL34's at +600V?
  98. The Infamous Kay 703C! - Help finding an output transformer?
  99. MOT's as output transformers?
  100. Grain oriented silicon steel core data needed
  101. PSUD II help
  102. Tube curves
  103. S-5 electronics amp kits
  104. up-to-date El Cheapo schematic
  105. unknown output trannie
  106. Help needed with KT88 Amp design
  107. Bogen MX60a
  108. AIKIDO - Low-volage with buffer version
  109. 6N6P cascode calculation
  110. 866a Min operating voltages
  111. new 6V6 amp
  112. Tube-based CCS- 0.2uF cap OK?
  113. DHT filament PSU: What would you do?
  114. PSU problem
  115. 811A se amp using a solid state driver
  116. ECC83 - Long Plate vs Short Plate
  117. Tube Matching
  118. Cascoded mu-follower
  119. DIY speaker choice for SE
  120. Output transformer wanted
  121. 835 amp
  122. One 300B filament supply for stereo?
  123. Aikido Built At Last!!
  124. Question about amount of feedback to apply
  125. design help needed.
  126. LED in cathode
  127. Need help for Eico 1030 regulated power supply
  128. zinc chassis
  129. Anode Cap Question
  130. what pins to use solid rectifier for 5Y3
  131. New PSU for Aikido?
  132. tube anti-vibration mounting
  133. Border Patrol PSU, can anyone help?
  134. Aikido Line Stage
  135. LED Bias Modifications
  136. Standby switch for bridge rectified power supplies.
  137. Decoupling in Phono stages.
  138. easy one valve pre help
  139. Single-ended-series amp with a "1 winding" transformer
  140. Complementary Symmetry Output
  141. Help getting these d$&* Dynascan probes apart!
  142. Aikido output cap selector switch
  143. adding an "on" lamp to amp kit
  144. Why does 6BM8 have so high max plate voltage?
  145. B+ soft start
  146. Unison research
  147. photos of my creations
  148. First Time Project - Finished! Photos Attached
  149. Design parameters for SE OPTs'
  150. want to build a pentode driven drd 2a3!
  151. Passive Magnetic Preamp!
  152. Testing an E288CC (8223)
  153. Need expert help on presence control
  154. Value of output caps for Aikido - how low is too low?
  155. Very expensive WE106A pre-amp, any member had this??
  156. B+ with or without tubes?
  157. 1st Time Project - Spot the howler
  158. Amp advice needed for a poor DIY er...
  159. DCR of primaries and secondaries of Hammond Transformer
  160. 801 amp with Power Drive
  161. Where did this come from?
  162. 6N7S's PPP Class A
  163. your opinion needed.......
  164. ST-70 strangeness
  165. SS preamp w/ tube amp
  166. pri. impedance vs. sek. impedance
  167. Question about speaker transformer
  168. How to read Russian Date Codes
  169. 300B Amp on ebay
  170. Would a 396A or 2C51 drive a 45?
  171. PSUD2 Q on regulator
  172. My last design
  173. OPT for 250th Se A2
  174. 829B, 3E29, QQV03-20 Connector
  175. Measuring from UK schematic but on US mains
  176. strange tube
  177. cathode resistor ?? in p-p fixed bias
  178. Need Help please . Headphones into line up of tube amp .
  179. 5Z4 inrush current too high
  180. Reducing gain on Audible Illusions M3A
  181. Decoding output transformers: strange SE's
  182. cheap and usable for 1K p-p iron?
  183. Help! Phono stage LF instability
  184. Faulty tube?
  185. Philbrick opamp bases
  186. Hammond Driver transformers
  187. 6n7/2a3
  188. Flea power for cheap OPT's?
  189. 1st Project - Half time report
  190. Claus Byrith 4-30 Questions
  191. quicksilver 8417 biasing
  192. 6sl7
  193. Trying to identify/find documentation on a 50EH5 amp
  194. Basic tests and measurements for OPTs
  195. 6SN7GT SRSE Linestage
  196. Dynaco Mark III
  197. Push Pull 300B preliminary
  198. triode thermodynamic model
  199. My first post!
  200. A Neophyte's 12B4 Build Thread
  201. Webster Hammond Model "G" amplifier
  202. Matching tubes- WE 396a/RFT EL34
  203. What is the most powerful AF tube amp ever built?
  204. SOHA Amp & PSU Layout, need feedback
  205. smoke came from transformer
  206. Startup Cost?
  207. Old or new output transformer?
  208. speaker magnet proximity Question
  209. I made a web page on building triode models /w CurveCaptor
  210. Boosted Triode mode?
  211. Unbalacing a PP output transformer?
  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. transformer hum / buzz getting into B+?
  229. Safe Transformerless Amps Possible?
  230. GM70 Lower Voltage PP Question
  231. phonostage with 150VDC B+
  232. Spuddo more powerfull
  233. Larry Moore 300B/10Y/6SN7GT
  234. Foreplay Preamp volume popping
  235. Altec Tube Amplifiers
  236. Circuit review
  237. 12dw7 to 12ax7 conversion?
  238. 26 preamp
  239. Etf07
  240. 1st Project Heater Wiring
  241. Dropped tube
  242. Great bench supply for tube work.
  243. Mullard px25 - need matched pair
  244. popping noise through 1 channel on Radford STA15
  245. Point to point wiring help
  246. 1st Time Project - Report 2 + advice sought
  247. "Simple" 2A3
  248. vinyl v cd differences - phono pre and cd-player
  249. Shielded input cable
  250. Coupling caps in ST35

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