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  1. Capacitive v. Inductive inter-stage coupling
  2. unused secondaries on SE opt?
  3. Marco Rodint coil building info needed
  4. Scott 222B Hum
  5. how to make audio output transformer
  6. 5842 Anyone?
  7. 813 SE build
  8. Aikido LV improved psu
  9. My first HiFi project
  10. B&O 608 tube amplifier
  11. Just designed a 300b amplifier....
  12. Anyone used C3g to drive GM70?
  13. Capacitors found, have you used these?
  14. I need your help!!!!!
  15. 12au7 600 ohm output
  16. new C3g/211PSE comments pls
  17. anyone know of a source for 12 pin+ connectors?
  18. Dynaco Mark IV Power Resistor
  19. Moondog with ac on gain & driver tubes?
  20. need help again on DIY Toccata MC Phono preamp
  21. Looking for analog Tube schematic for "analogmetric 1541a" DAC
  22. newbie needs help with tube inheritance
  23. 2A3 SETs with Edcor Iron
  24. What to do with this iron (originally from PP 7355)
  25. Just for everyone's amusement....
  26. beam tetrode calculations
  27. What are the differences between LC and CLC chokes
  28. gain and mid circuits
  29. Kay 503 Schematics?
  30. Transformer Data
  31. tube B 406 triode dick's cleo 4
  32. GE Snubber, High Current DC, and Switching Capacitors
  33. Russian EL84 - Many varieties
  34. Back From the Dead- A NOS Tube Story
  35. application for ccs/gyrator board from the groupbuy
  36. Building a tube radio
  37. Three more articles for the WW Archive
  38. Amplifier antics
  39. what about a tube makes it UL recommended
  40. 6as7 p-p with transformer phase-splitter
  41. Large power push pull output transformers, say 150W
  42. I need a schematic for a amp project
  43. Preamp resistors calculation for http://www.shine7.com
  44. Best replacement solid state rectifiers for a 400V 125 mA supply in a tube amp
  45. Dynakit PAS-2 Filament Voltage Question - replaced Selenium rectifier
  46. Vintage tubes
  47. Amp PSU standby and PA switching
  48. 245 tubes
  49. Vacuum tube clock radio
  50. First Project, need some help
  51. Graetz Scerzo Schematic
  52. simple se 2a3 amp help!!!!!
  53. 5bc3 rectifier
  54. Help me improve this PSU. (6c33 set, voltage doubler)
  55. Choke Loaded Driver Load Lines Question
  56. CCS and tube aging
  57. Tetra lives!!!!!
  58. Tube shops/supplies in Brisbane/Gold Coast
  59. AC VT25 filament?
  60. Let's show go on: Building Monster SE!
  61. Mystery 6AQ5A powered chassis?
  62. 6Y6G tube for low-voltage SE amplifier?
  63. Jolida gain and negative feedback?
  64. 1/2 of the tube for each channel?
  65. Problem with Legacy pentode driver stage
  66. 845 Operating Point
  67. Tube rectifiers
  68. D76 Inrush current limiter thermistor?
  69. New to Tubes? How to get the basics, read on..
  70. interstage tansformer impedence
  71. 2 PSU sharing the same Power transformer?
  72. Biasing amp
  73. CCS placement
  74. clueless on console
  75. 5E3 Build Problems Cont'd
  76. Popping in stepped volume control
  77. 6by5 CRC Values
  78. Is this do-able?
  79. PCB for Gary Pimm's CCS & SS Pentode
  80. EL86 Single Ended PP Power Amplifier
  81. Diyhifisupply Billies - dead OPTs?
  82. 6H30P-DR
  83. Tube AMP and stax headphones....
  84. soft start power supply for dynaco st-70
  85. The Telefunken EF86?
  86. Can you run parallel circuits from a rectifier?
  87. Mullard 5-20 with 6L6GC's?
  88. Adding balanced input to 6N1P tube.
  89. Partial feedback (anode grid) with cathode follower
  90. 4P1L as First gain stage or in Pre-Amp..?
  91. Advice on 6418 design requested
  92. Shorting jumpers for octal sockets
  93. Tube lineup in an Admiral y4302
  94. John Broskie MIA?
  95. Audio Research VT 100 MKII need help!!
  96. Help with AD30 PSU build
  97. Who was the Japanese Amp Guru?
  98. 6922 vs an ECC82.....a test.
  99. Triode connected 6LW6 for SE
  100. 12AD7???
  101. New Book Review
  102. Hoax or truth about 6SJ7 (Equiv.: 6J8P/5693/CV3699/VT-116A).. ???
  103. looking for hi volt commercial power supplies
  104. 6L6, 6L6GT, 6L6GC, 5881, 7027, KT66...
  105. ECC85
  106. Pioneer 304B fm/am reciever schematic
  107. ECC82 JJ Made in Slovak Republic!?
  108. Definition of matched
  109. Polycarbonate as coupling caps?
  110. pick tubes for tubecad unbalancer
  111. OPT for EL34
  112. 12v dc tube amp/pre high SQ
  113. Better than 12au7?
  114. Amps and 4-ohm loads
  115. What is the "best" tube amp / speaker / source you have ever used?
  116. 814 as Triode / Max. Ug2 voltage
  117. valves better than solid state?
  118. musical fidelity x10d clone
  119. Acrosound 7591A amp
  120. suggestions for simple amp wanted
  121. Wish you could nail down your copper wool holder?
  122. HELP- Pricing Genuine Genalex KT77's
  123. K120 on 6550/KT88/KT90 anyone tried???
  124. do tubes ever leak b+ into heaters?
  125. How can I use these high-current, low-inductance chokes?
  126. 6005w Q+introduction
  127. Sonic Frontiers Line 3 Increate the Output Voltage
  128. Dynaco ST-70 chassis
  129. Opinion on the scheme with the 12AX7!
  130. Fully Parametric Tube EQ (with gyrators)
  131. 600v snap-in electrolytics
  132. anyone knows of 6 channel tube amplier ?
  133. 6N6P SE idea
  134. EL84
  135. Long tails and current sources
  136. How to reduce gain in mu-follower?
  137. Chassis
  138. Single Ended Amplifier 6P43P
  139. 6C33C spacing
  140. A very excitable Luminescence
  141. KT-88 Data sheet question.
  142. Good 12ax7
  143. Operating points theory...
  144. 1-stage (killer, literally) amp made of junk
  145. Two bridges and a CT transformer....
  146. What should clipping look like? (AKA reading sine waves)
  147. Combining coupling cap's
  148. Quicksilver Mono Amp Model 1300 - creating Auto Bias wanted
  149. 845 with kathode bias
  150. Mixing Resistor types?
  151. Looking for EI-75 80% perm ...
  152. Ambient temperature target
  153. Old radio
  154. JJ glowing twice as bright
  155. DPA150
  156. Discharging a capacitor - should I??
  157. German transformer builder
  158. 6P30B-V subminiature tube
  159. Improved Tube Headphones Amp
  160. Best method of reducing line voltage into vintage transformers?
  161. Harman-Kardon TA5000X, A500 or A50K OPT - Quality?
  162. hum measurement
  163. DIY 450VA+ multi-tapped tube power trafo
  164. DIY 450VA+ multi-tapped tube power trafo
  165. Duelund Alexander Copper Foil Capacitors
  166. Yaqin MS-20L tube recommendation
  167. Tube version of aleph-x. Is it possible?
  168. help - Looking for specs Trimax TA1439
  169. where can i get transformers in the UK?
  170. Mono 5W-17W Power Amp using EL84 push-pull
  171. Reference Books
  172. Tresco?
  173. BELL 3DT, Phono RIAA Odditty
  174. 6SL7/6V6 tubes in an RH84 SE amplifier?
  175. How to calculate max voltage swing in cathode follower?
  176. Power Transformer Temp
  177. Silvaweld OTL Tube Reference 100 schematics
  178. Need suggestion for 6.3V-0-6.3V
  179. Unison Research SMART 845
  180. 26/45 SE amp ?
  181. V2 rocket guidance system.
  182. Sweep Tube SEP
  183. Help me find cirquit, I forgot where I last saw it?
  184. Passive or Active? For Wet/Dry mix on valve driven reverb.
  185. Plate resistor for FVP5a
  186. Simulation
  187. DHT w/ DC heater - How to rig cathode bias?
  188. schematics needed- Luxman MQ70
  189. CSS for 6c33?
  190. Svetlana (Winged C) 6L6GC vs. the Others...
  191. Power Supply Help- 807's, High Voltage
  192. Looking for info about a 1940s Amp
  193. More amplifiers in the Wireless World Archive
  194. why does my amp require a preamp?
  195. Why two GZ34 in this schematic?
  196. Floating Dc heaters, capacitor to ground
  197. anyone have experience with 1J17B tube
  198. Preventing arcing on standby switch?
  199. Help with buzzing mains transformer
  200. Balanced Amp Topology
  201. ECC33
  202. Distortion spectrum vs feedback
  203. Heaters question
  204. Why do transformers have such*&%#* hardware?
  205. what's my fisher 400 off gassing?
  206. Executone schematic needed
  207. parafeed output amplifier
  208. B+K 500 Testor Question
  209. CCCP SUBTUBE: my last project
  210. Aikido Line-Stage jumper question
  211. Tube Amplifier to power Gale GS401 speakers
  212. Bypass Cap on cathode?
  213. How to measure/calculate dB of negative feedback?
  214. Need your advices & experiences
  215. Parmeko gresham transformers specifications
  216. Valve cascodes for Phono input.
  217. ST-70 XLR Balanced Driver Boad
  218. I'm new here any places for like us newbies?
  219. Noob looking for some advice
  220. Stand Alone guitar power amp for evaluation
  221. QQE04/5 Curves
  222. Help on Audio Research D79A adjustment
  223. lazarus preamp hums even with volume down and no components connected.
  224. Troubles when elevating a LT supply
  225. Turning up the heat: cathode bias
  226. Anyone build Dynaco Mk IIIs with Sullivan boards?
  227. Lowering gain on Frank's 6SN7 preamp
  228. Pro amp input modification
  229. Sanity of compactron for "integrated" headphone amp?
  230. vdc drop
  231. HELP - SMART 845 or 300B SE
  232. DC Servo - Direct Coupling Applications?
  233. Edison 12 amplifier
  234. Mounting terminal strips to blank copper board
  235. 6C33C tube socket for GM70 tube??
  236. Fisher X100C 2 sets speakers?
  237. 4P1L DHT Line Stage
  238. Trying to identify an old radio tube
  239. Yaqin CD3 upgrading caps help for novice
  240. push pull adjustable fixed bias
  241. Another SE amp design.
  242. Chassis to experiment with....
  243. Ray Butts Echosonic #27
  244. Ampeg Reverberocket II Hum
  245. What coupling capacitor values are common
  246. Yamamoto A-09s
  247. 9001 variant of Acorn 954 Pentode
  248. Khron-Hite UHR220 tube power source
  249. Grounding the 4ohm tap
  250. Rectifier mechanical buzz

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