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

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