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  1. E182CC - how to connect heater supply?
  2. Aikido pre tube for Minimum Gain
  3. 14gt8...clipping diodes?
  4. HPHV regulator
  5. Grounded Grid
  6. NYAL Super-It - removing volume pots, what resistor value to replace them?
  7. Another Bogen Conversion
  8. Trouble with my "new" PAS-3 Preamp
  9. Tubalizer, Monica
  10. musical angel modified marantz 7 preamp schematics
  11. Can anyone suggest the "best" 300B SE sound quality schematic for a beginner like me?
  12. Solder directly on tube?
  13. article in NY Times on Russian tubes
  14. Sovtek's sad tale
  15. audio research LS25 preamp
  16. Schematic needed PL519 Push-Pull Ultra-Linear amp
  17. Use 6C19 in a phono amp?
  18. 6L6 Push pull -- Power tranny question
  19. INPOL technology. Duh.
  20. Transformer problem
  21. Anyone tried a hi-voltage project as their first?
  22. Schematic needed PL519 Class A SE
  23. Giaime's new toy - aka the UniOctal
  24. Critique my circuit?
  25. New EC8010-VT52 Amp
  26. EL84/6BQ5 triode pp with no cathode biasing
  27. EL34 Push Pull in Class A
  28. In search of tube audiophile in Dhaka, Bangladesh
  29. Passive preamp with utc transformers
  30. RGN rectifiers in PSUD2...
  31. Power amp harmonics ?
  32. bypass tone controls on heathkit sp-2
  33. PS Caps
  34. Doubts on cathode stripping in tubes
  35. Edcor amplifier --> 6l6 PP
  36. Welborne labs phono stage needs help, got killed in power surge last night
  37. Huge OPT and small tubes
  38. UTC technology
  39. Luxman 38FD schematic
  40. EL84 PP Diy. Pls help me!!!
  41. Wurlitzer amplifier needs help
  42. Grounding case of 6J5
  43. Tube HW question from a software guy
  44. 12AU7 tube preamplifier schema
  45. "Improved RIAA by Jax"-Power supply help needed!!!
  46. OT Overload question
  47. V76
  48. Application of 6877 ?
  49. First nos tubes
  50. Looking for tube sockets
  51. Input transformers impedance questions
  52. Hybrid amp schema?
  53. Hybrid Cascode ?
  54. Interstage topology question
  55. raccomandation with valve amps
  56. Power Transformers in Output!
  57. How do I design "SCREEN GRID DRIVE"
  58. My El34 SET
  59. Ancient Bogen 807PP Amp-Guitar
  60. Schematic needed 811a Class A2
  61. Power transformer from Tek545 'oscope
  62. Agape Audio Labs
  63. ETF06 - A century of good sound
  64. I completed my amp!
  65. Overload recovery
  66. Converting SS eq. to Tube
  67. oscillation
  68. Tube preamp with: 1V in and 15Vout???
  69. Electrolytic Cap Search
  70. Bibster's 5687 Linestage, the return
  71. Anyone know anything about Morreto amps?
  72. Determining Output Power
  73. Turn on static?
  74. Estimate power transformer current rate?
  75. Control grid Voltage / grid stoppers...
  76. Horizontal TV tubes used in amplifier?
  77. tube sterio preamp complete
  78. Cons for using instrumentation tube PS for project amp...
  79. Svetlanas site down?
  80. Calculations for new Power transformer
  81. Mullard CV4015 info?
  82. SMPS for tube amp?
  83. Pentode Push-Pull
  84. LL1660S Anomaly
  85. DIY Hybrid poweramp noise and hum problem
  86. tube questions
  87. Problems w/biasing a lC50
  88. Big Honkin Tele
  89. Tube DIY store
  90. Pronouced 300B amp Midrange
  91. Tube preamp with current mirror
  92. Transformer Coupling and Headphones? (Toob Noob)
  93. Who can explain the source of this Siemens 12AU7
  94. how does one tell when a tube is truely dead?
  95. A curious observation
  96. Help choosing capacitor value?
  97. Neon Power?
  98. The rectifier from hell, a little story.
  99. a directly heated monkey?
  100. 6l6gc SET, my first DIY
  101. SE Output Transformer Matching
  102. power tube biasing
  103. Jupiters: Tolerance: 26% over spec: o.k.?
  104. Help! 6DJ8 Tube Buffer Schematics
  105. Output Transformers for an EL84 Push-Pull Amp
  106. Advice regarding philips/mullard EL34
  107. 300b based monoblock plans
  108. need help for Marshall PCB
  109. Marshall schematic ?
  110. counterpoint Sa 5.1
  111. Help with bogen CH8
  112. where do you get those schematics / layouts?
  113. Spice 3f4 model of a low voltage direct heated signal level pentode
  114. ECC82
  115. Major diff between 12AX7 and 12AU7
  116. Voltage doubler question
  117. el34 instead of 6550
  118. Bogen CH8
  119. Ah Njoe Tjoeb 4000 problem
  120. my last project
  121. TIP50 voltage regulator
  122. Collets for 212 pins
  123. K-12M Enclosure + Upgrades. Finished!
  124. Will this work?
  125. Big tube - what is it?
  126. Help! no signal! Marshall JTM60
  127. PSU topology & regulator
  128. Dynaco from scratch
  129. 6HV5A Single Ended Amp
  130. Cheap but not too much !
  131. Quick Output Transformer Question
  132. Help with guitar tube amp mods
  133. strange thing with AMC 2030
  134. GE6072 replacement tube
  135. Counterpoint 5.1 preamp
  136. Tube library
  137. RIAA recording on CD
  138. Old SE transformer measuring?
  139. Speakers for tube amps...
  140. MF x10v3
  141. Free Tube Books.....
  142. A Transformer question
  143. 6v6 PP - No sound
  144. help with interstage needed
  145. Hum in Speakers
  146. Just another PP...
  147. Leak Stereo 20 questions
  148. 10M45 CCS, what am I doing wrong ?
  149. Various transformers
  150. tubes sound
  151. Power supply help!
  152. KR Tubes
  153. Bi-amp Between Tube, and SS
  154. 2 Tube questions,
  155. my biggest project ever , need lotsa help plz
  156. tube temperatures
  157. hh scott bias issues
  158. B+ required w/ ccs load
  159. Info re Soundtech powerone tube amp
  160. Verdier Regulated Power Supply
  161. 6DJ8/ECC88 mu-follower
  162. Tube Compressor
  163. Newbie PSU question
  164. Hickok Cardmatic tube tester cards
  165. Hashimoto SE Output Transformer
  166. Ripple and chokes
  167. Tubes driven by BJT's
  168. Red LED substitution questions
  169. Hytron big 71A
  170. Need some help for 6L6 amp
  171. 802 as an audio output tube
  172. Changing 6DJ8 SRPP stage gain
  173. Cooling In Cab / Minimum Vent Area?
  174. Tube voltage help
  175. MF XPre troubleshooting
  176. Giaime's Preamp Finished!!!
  177. Circuit and PCB Layout comments
  178. 4613 triode
  179. Help with inverter CCS+NFB
  180. Question about KT 88 integrated
  181. The Trials, and Tribulations of Bias
  182. Which components should be matched?
  183. Using PP output for SE?
  184. Tube Newbee Needing Guidance
  185. 12A/71A SET project
  186. 805 SE amplifier
  187. Playing with screen resistors
  188. Interpret this 12ax7 feedback loop
  189. Low voltage-drop CCS for LTP input stage?
  190. Tube Socket Mounting - rigid or floating
  191. SE-9 mod help please
  192. 2a3SE
  193. 20 Watt SE. I had found it.
  194. Ok to exceed Vg2 in triode? (Yes)
  195. Fender Adjustments
  196. Help needed in Bloomington IN
  197. % error for primary resistance
  198. Help Understanding Circuit (grounded grid I/V)
  199. Testing a 70.7v transformer
  200. thyratron?
  201. Tube frontend....
  202. Transformer and Choke Grounding?
  203. El509 Pse
  204. 6550 Safety Question
  205. Jadis Defy 7 : Manual
  206. Melos Ma-111b
  207. Old audio amp change
  208. Need 45 tubes
  209. Jadis Defy 7 : Manual ??
  210. Help for pre-amp and two single-ended finals
  211. Schematic needed:MFA Magus B
  212. Can I remove the input caps?
  213. 807 vs. 1624 tetrode ?
  214. how to make tube amp sound layback and mellow?
  215. Standard tube filament voltages and currents
  216. SE 20W. What tube?
  217. 5687 Linestage behaving odd...
  218. SMPS & tube pre-amp development board.
  219. Question about Melody KT88 amp
  220. Trafomatic Transformer
  221. Diode trick?
  222. Return of the vacuum tube sonic hologram generator
  223. 6V6 ->EL84 with 12AT7?
  224. design for 6336A OTL amp needed
  225. Aikido sound?
  226. Valve preamp
  227. GAS VR Tubes on B+
  228. Measuring Triode-Connected Pentode Curves
  229. 6L6, 12L6 not same tube!
  230. equivilent part numbers for 6K35HF
  231. Is this a start or run cap
  232. 6V6 PP under construction - pics
  233. Is this practical
  234. Idea for a 2 tube 6080 PP amp.
  235. pls tell where to buy core of transformer
  236. 300B amp PS optimization?
  237. Different value for .47uf coupling cap
  238. Old Olympic audio tube amp
  239. What Design to Use?
  240. KT90's anyone using'em ?
  241. What are they?
  242. Replace el34 with 6p3s
  243. Advice on 6V6 push pull Parallel
  244. squealing output transformer
  245. Melos Sha Gold
  246. Ways to Lower B+ in a Tube Rectifed PS
  247. Oregon Electronics D6 HV supplies: info needed please
  248. My version of the Vacuum State FVP5
  249. Diy Tube Phono Preamp
  250. double check the math

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