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  1. 6dj8 phono amp
  2. Jolida Score!!!!
  3. voltage boost
  4. Swinging choke value in PSUD
  5. Hum Nirvana
  6. Plates glowing on my Fender Concert after blowing fuse
  7. This weekend's reading
  8. 6550-6550A-6550B-6550C - What are exactly Differences ??
  9. Interstage Transformer Questions
  10. Vacuum State FVP5A voltages
  11. can you help me out? Sencore TC114 tube tester
  12. Steve Bench's tube crossover - Help needed.
  13. transformer design equations
  14. Retrofit idea, need advice, 6L6SE guitar amp
  15. some misc schematics, manley, rotel
  16. What happened to my tube??
  17. Tube Preamp Question
  18. Schematic for Pilot SP215
  19. Screen current through cathode resistors
  20. Gyrator design
  21. Any tips for routing heaters on a PCB
  22. 6EZ5 as drop in replacement for 6V6 tube?
  23. RIAA Preamp and equalization 12AX7
  24. Correct hum mods?
  25. Push-Pull from Stereo SE amp
  26. how to select transformers.
  27. Ultrapath or parallel feed apps. for 7591 amps?
  28. PP-UL amp with KT88
  29. Reuse these sockets and tube choice question
  30. Need help understanding this circuit
  31. Need a little help with a power supply I designed.
  32. Which tube Rectifier is good enough for 5902 tube amp ?
  33. Schematic for Masco ME-8?
  34. Transformer Rattle & Hum issue - Dynakit ST-70
  35. pio coupling caps - damaged/used?
  36. 6EZ8 (and other triple triodes) help please!
  37. Akron, Ohio
  38. 6N6P Heater and earth wiring advice
  39. united transformer corporation
  40. Capacitive v. Inductive inter-stage coupling
  41. unused secondaries on SE opt?
  42. Marco Rodint coil building info needed
  43. Scott 222B Hum
  44. how to make audio output transformer
  45. 5842 Anyone?
  46. 813 SE build
  47. Aikido LV improved psu
  48. My first HiFi project
  49. B&O 608 tube amplifier
  50. Just designed a 300b amplifier....
  51. Anyone used C3g to drive GM70?
  52. Capacitors found, have you used these?
  53. I need your help!!!!!
  54. 12au7 600 ohm output
  55. new C3g/211PSE comments pls
  56. anyone know of a source for 12 pin+ connectors?
  57. Dynaco Mark IV Power Resistor
  58. Moondog with ac on gain & driver tubes?
  59. need help again on DIY Toccata MC Phono preamp
  60. Looking for analog Tube schematic for "analogmetric 1541a" DAC
  61. newbie needs help with tube inheritance
  62. 2A3 SETs with Edcor Iron
  63. What to do with this iron (originally from PP 7355)
  64. Just for everyone's amusement....
  65. beam tetrode calculations
  66. What are the differences between LC and CLC chokes
  67. gain and mid circuits
  68. Kay 503 Schematics?
  69. Transformer Data
  70. tube B 406 triode dick's cleo 4
  71. GE Snubber, High Current DC, and Switching Capacitors
  72. Russian EL84 - Many varieties
  73. Back From the Dead- A NOS Tube Story
  74. application for ccs/gyrator board from the groupbuy
  75. Building a tube radio
  76. Three more articles for the WW Archive
  77. Amplifier antics
  78. what about a tube makes it UL recommended
  79. 6as7 p-p with transformer phase-splitter
  80. Large power push pull output transformers, say 150W
  81. I need a schematic for a amp project
  82. Preamp resistors calculation for http://www.shine7.com
  83. Best replacement solid state rectifiers for a 400V 125 mA supply in a tube amp
  84. Dynakit PAS-2 Filament Voltage Question - replaced Selenium rectifier
  85. Vintage tubes
  86. Amp PSU standby and PA switching
  87. 245 tubes
  88. Vacuum tube clock radio
  89. First Project, need some help
  90. Graetz Scerzo Schematic
  91. simple se 2a3 amp help!!!!!
  92. 5bc3 rectifier
  93. Help me improve this PSU. (6c33 set, voltage doubler)
  94. Choke Loaded Driver Load Lines Question
  95. CCS and tube aging
  96. Tetra lives!!!!!
  97. Tube shops/supplies in Brisbane/Gold Coast
  98. AC VT25 filament?
  99. Let's show go on: Building Monster SE!
  100. Mystery 6AQ5A powered chassis?
  101. 6Y6G tube for low-voltage SE amplifier?
  102. Jolida gain and negative feedback?
  103. 1/2 of the tube for each channel?
  104. Problem with Legacy pentode driver stage
  105. 845 Operating Point
  106. Tube rectifiers
  107. D76 Inrush current limiter thermistor?
  108. New to Tubes? How to get the basics, read on..
  109. interstage tansformer impedence
  110. 2 PSU sharing the same Power transformer?
  111. Biasing amp
  112. CCS placement
  113. clueless on console
  114. 5E3 Build Problems Cont'd
  115. Popping in stepped volume control
  116. 6by5 CRC Values
  117. Is this do-able?
  118. PCB for Gary Pimm's CCS & SS Pentode
  119. EL86 Single Ended PP Power Amplifier
  120. Diyhifisupply Billies - dead OPTs?
  121. 6H30P-DR
  122. Tube AMP and stax headphones....
  123. soft start power supply for dynaco st-70
  124. The Telefunken EF86?
  125. Can you run parallel circuits from a rectifier?
  126. Mullard 5-20 with 6L6GC's?
  127. Adding balanced input to 6N1P tube.
  128. Partial feedback (anode grid) with cathode follower
  129. 4P1L as First gain stage or in Pre-Amp..?
  130. Advice on 6418 design requested
  131. Shorting jumpers for octal sockets
  132. Tube lineup in an Admiral y4302
  133. John Broskie MIA?
  134. Audio Research VT 100 MKII need help!!
  135. Help with AD30 PSU build
  136. Who was the Japanese Amp Guru?
  137. 6922 vs an ECC82.....a test.
  138. Triode connected 6LW6 for SE
  139. 12AD7???
  140. New Book Review
  141. Hoax or truth about 6SJ7 (Equiv.: 6J8P/5693/CV3699/VT-116A).. ???
  142. looking for hi volt commercial power supplies
  143. 6L6, 6L6GT, 6L6GC, 5881, 7027, KT66...
  144. ECC85
  145. Pioneer 304B fm/am reciever schematic
  146. ECC82 JJ Made in Slovak Republic!?
  147. Definition of matched
  148. Polycarbonate as coupling caps?
  149. pick tubes for tubecad unbalancer
  150. OPT for EL34
  151. 12v dc tube amp/pre high SQ
  152. Better than 12au7?
  153. Amps and 4-ohm loads
  154. What is the "best" tube amp / speaker / source you have ever used?
  155. 814 as Triode / Max. Ug2 voltage
  156. valves better than solid state?
  157. musical fidelity x10d clone
  158. Acrosound 7591A amp
  159. suggestions for simple amp wanted
  160. Wish you could nail down your copper wool holder?
  161. HELP- Pricing Genuine Genalex KT77's
  162. K120 on 6550/KT88/KT90 anyone tried???
  163. do tubes ever leak b+ into heaters?
  164. How can I use these high-current, low-inductance chokes?
  165. 6005w Q+introduction
  166. Sonic Frontiers Line 3 Increate the Output Voltage
  167. Dynaco ST-70 chassis
  168. Opinion on the scheme with the 12AX7!
  169. Fully Parametric Tube EQ (with gyrators)
  170. 600v snap-in electrolytics
  171. anyone knows of 6 channel tube amplier ?
  172. 6N6P SE idea
  173. EL84
  174. Long tails and current sources
  175. How to reduce gain in mu-follower?
  176. Chassis
  177. Single Ended Amplifier 6P43P
  178. 6C33C spacing
  179. A very excitable Luminescence
  180. KT-88 Data sheet question.
  181. Good 12ax7
  182. Operating points theory...
  183. 1-stage (killer, literally) amp made of junk
  184. Two bridges and a CT transformer....
  185. What should clipping look like? (AKA reading sine waves)
  186. Combining coupling cap's
  187. Quicksilver Mono Amp Model 1300 - creating Auto Bias wanted
  188. 845 with kathode bias
  189. Mixing Resistor types?
  190. Looking for EI-75 80% perm ...
  191. Ambient temperature target
  192. Old radio
  193. JJ glowing twice as bright
  194. DPA150
  195. Discharging a capacitor - should I??
  196. German transformer builder
  197. 6P30B-V subminiature tube
  198. Improved Tube Headphones Amp
  199. Best method of reducing line voltage into vintage transformers?
  200. Harman-Kardon TA5000X, A500 or A50K OPT - Quality?
  201. hum measurement
  202. DIY 450VA+ multi-tapped tube power trafo
  203. DIY 450VA+ multi-tapped tube power trafo
  204. Duelund Alexander Copper Foil Capacitors
  205. Yaqin MS-20L tube recommendation
  206. Tube version of aleph-x. Is it possible?
  207. help - Looking for specs Trimax TA1439
  208. where can i get transformers in the UK?
  209. Mono 5W-17W Power Amp using EL84 push-pull
  210. Reference Books
  211. Tresco?
  212. BELL 3DT, Phono RIAA Odditty
  213. 6SL7/6V6 tubes in an RH84 SE amplifier?
  214. How to calculate max voltage swing in cathode follower?
  215. Power Transformer Temp
  216. Silvaweld OTL Tube Reference 100 schematics
  217. Need suggestion for 6.3V-0-6.3V
  218. Unison Research SMART 845
  219. 26/45 SE amp ?
  220. V2 rocket guidance system.
  221. Sweep Tube SEP
  222. Help me find cirquit, I forgot where I last saw it?
  223. Passive or Active? For Wet/Dry mix on valve driven reverb.
  224. Plate resistor for FVP5a
  225. Simulation
  226. DHT w/ DC heater - How to rig cathode bias?
  227. schematics needed- Luxman MQ70
  228. CSS for 6c33?
  229. Svetlana (Winged C) 6L6GC vs. the Others...
  230. Power Supply Help- 807's, High Voltage
  231. Looking for info about a 1940s Amp
  232. More amplifiers in the Wireless World Archive
  233. why does my amp require a preamp?
  234. Why two GZ34 in this schematic?
  235. Floating Dc heaters, capacitor to ground
  236. anyone have experience with 1J17B tube
  237. Preventing arcing on standby switch?
  238. Help with buzzing mains transformer
  239. Balanced Amp Topology
  240. ECC33
  241. Distortion spectrum vs feedback
  242. Heaters question
  243. Why do transformers have such*&%#* hardware?
  244. what's my fisher 400 off gassing?
  245. Executone schematic needed
  246. parafeed output amplifier
  247. B+K 500 Testor Question
  248. CCCP SUBTUBE: my last project
  249. Aikido Line-Stage jumper question
  250. Tube Amplifier to power Gale GS401 speakers

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