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  1. Help with Quad II hum
  2. 18K audio note output transformer
  3. Small tube amp conversion help 6x4, 6AU6, 6AQ5
  4. Hybrid never see
  5. "Next to Last" PAS Project
  6. Power supply overload
  7. Home build 6L6 pp amp buzzing noise
  8. 807 monoblocks with big PSU
  9. SET amps and crossovers.....?
  10. Sockets for 6P41S
  11. 6dj8 phono amp
  12. Jolida Score!!!!
  13. voltage boost
  14. Swinging choke value in PSUD
  15. Hum Nirvana
  16. This weekend's reading
  17. 6550-6550A-6550B-6550C - What are exactly Differences ??
  18. Interstage Transformer Questions
  19. Vacuum State FVP5A voltages
  20. can you help me out? Sencore TC114 tube tester
  21. Steve Bench's tube crossover - Help needed.
  22. transformer design equations
  23. some misc schematics, manley, rotel
  24. What happened to my tube??
  25. Tube Preamp Question
  26. Schematic for Pilot SP215
  27. Screen current through cathode resistors
  28. Gyrator design
  29. Any tips for routing heaters on a PCB
  30. 6EZ5 as drop in replacement for 6V6 tube?
  31. RIAA Preamp and equalization 12AX7
  32. Correct hum mods?
  33. Push-Pull from Stereo SE amp
  34. how to select transformers.
  35. Ultrapath or parallel feed apps. for 7591 amps?
  36. PP-UL amp with KT88
  37. Reuse these sockets and tube choice question
  38. Need help understanding this circuit
  39. Need a little help with a power supply I designed.
  40. Which tube Rectifier is good enough for 5902 tube amp ?
  41. Schematic for Masco ME-8?
  42. Transformer Rattle & Hum issue - Dynakit ST-70
  43. pio coupling caps - damaged/used?
  44. 6EZ8 (and other triple triodes) help please!
  45. Akron, Ohio
  46. 6N6P Heater and earth wiring advice
  47. united transformer corporation
  48. Capacitive v. Inductive inter-stage coupling
  49. unused secondaries on SE opt?
  50. Marco Rodint coil building info needed
  51. Scott 222B Hum
  52. how to make audio output transformer
  53. 5842 Anyone?
  54. 813 SE build
  55. Aikido LV improved psu
  56. My first HiFi project
  57. B&O 608 tube amplifier
  58. Just designed a 300b amplifier....
  59. Anyone used C3g to drive GM70?
  60. Capacitors found, have you used these?
  61. I need your help!!!!!
  62. 12au7 600 ohm output
  63. new C3g/211PSE comments pls
  64. anyone know of a source for 12 pin+ connectors?
  65. Dynaco Mark IV Power Resistor
  66. Moondog with ac on gain & driver tubes?
  67. need help again on DIY Toccata MC Phono preamp
  68. Looking for analog Tube schematic for "analogmetric 1541a" DAC
  69. newbie needs help with tube inheritance
  70. 2A3 SETs with Edcor Iron
  71. What to do with this iron (originally from PP 7355)
  72. Just for everyone's amusement....
  73. beam tetrode calculations
  74. What are the differences between LC and CLC chokes
  75. gain and mid circuits
  76. Kay 503 Schematics?
  77. Transformer Data
  78. tube B 406 triode dick's cleo 4
  79. GE Snubber, High Current DC, and Switching Capacitors
  80. Russian EL84 - Many varieties
  81. Back From the Dead- A NOS Tube Story
  82. application for ccs/gyrator board from the groupbuy
  83. Building a tube radio
  84. Three more articles for the WW Archive
  85. Amplifier antics
  86. what about a tube makes it UL recommended
  87. 6as7 p-p with transformer phase-splitter
  88. Large power push pull output transformers, say 150W
  89. I need a schematic for a amp project
  90. Preamp resistors calculation for http://www.shine7.com
  91. Best replacement solid state rectifiers for a 400V 125 mA supply in a tube amp
  92. Dynakit PAS-2 Filament Voltage Question - replaced Selenium rectifier
  93. Vintage tubes
  94. Amp PSU standby and PA switching
  95. 245 tubes
  96. Vacuum tube clock radio
  97. First Project, need some help
  98. Graetz Scerzo Schematic
  99. simple se 2a3 amp help!!!!!
  100. 5bc3 rectifier
  101. Help me improve this PSU. (6c33 set, voltage doubler)
  102. Choke Loaded Driver Load Lines Question
  103. CCS and tube aging
  104. Tetra lives!!!!!
  105. Tube shops/supplies in Brisbane/Gold Coast
  106. AC VT25 filament?
  107. Let's show go on: Building Monster SE!
  108. Mystery 6AQ5A powered chassis?
  109. 6Y6G tube for low-voltage SE amplifier?
  110. Jolida gain and negative feedback?
  111. 1/2 of the tube for each channel?
  112. Problem with Legacy pentode driver stage
  113. 845 Operating Point
  114. Tube rectifiers
  115. D76 Inrush current limiter thermistor?
  116. New to Tubes? How to get the basics, read on..
  117. interstage tansformer impedence
  118. 2 PSU sharing the same Power transformer?
  119. Biasing amp
  120. CCS placement
  121. clueless on console
  122. Popping in stepped volume control
  123. 6by5 CRC Values
  124. Is this do-able?
  125. PCB for Gary Pimm's CCS & SS Pentode
  126. EL86 Single Ended PP Power Amplifier
  127. Diyhifisupply Billies - dead OPTs?
  128. 6H30P-DR
  129. Tube AMP and stax headphones....
  130. soft start power supply for dynaco st-70
  131. The Telefunken EF86?
  132. Can you run parallel circuits from a rectifier?
  133. Mullard 5-20 with 6L6GC's?
  134. Adding balanced input to 6N1P tube.
  135. Partial feedback (anode grid) with cathode follower
  136. 4P1L as First gain stage or in Pre-Amp..?
  137. Advice on 6418 design requested
  138. Shorting jumpers for octal sockets
  139. Tube lineup in an Admiral y4302
  140. John Broskie MIA?
  141. Audio Research VT 100 MKII need help!!
  142. Help with AD30 PSU build
  143. Who was the Japanese Amp Guru?
  144. 6922 vs an ECC82.....a test.
  145. Triode connected 6LW6 for SE
  146. 12AD7???
  147. New Book Review
  148. Hoax or truth about 6SJ7 (Equiv.: 6J8P/5693/CV3699/VT-116A).. ???
  149. looking for hi volt commercial power supplies
  150. 6L6, 6L6GT, 6L6GC, 5881, 7027, KT66...
  151. ECC85
  152. Pioneer 304B fm/am reciever schematic
  153. ECC82 JJ Made in Slovak Republic!?
  154. Definition of matched
  155. Polycarbonate as coupling caps?
  156. pick tubes for tubecad unbalancer
  157. OPT for EL34
  158. 12v dc tube amp/pre high SQ
  159. Better than 12au7?
  160. Amps and 4-ohm loads
  161. What is the "best" tube amp / speaker / source you have ever used?
  162. 814 as Triode / Max. Ug2 voltage
  163. valves better than solid state?
  164. musical fidelity x10d clone
  165. Acrosound 7591A amp
  166. suggestions for simple amp wanted
  167. Wish you could nail down your copper wool holder?
  168. HELP- Pricing Genuine Genalex KT77's
  169. K120 on 6550/KT88/KT90 anyone tried???
  170. do tubes ever leak b+ into heaters?
  171. How can I use these high-current, low-inductance chokes?
  172. 6005w Q+introduction
  173. Sonic Frontiers Line 3 Increate the Output Voltage
  174. Dynaco ST-70 chassis
  175. Opinion on the scheme with the 12AX7!
  176. Fully Parametric Tube EQ (with gyrators)
  177. 600v snap-in electrolytics
  178. anyone knows of 6 channel tube amplier ?
  179. 6N6P SE idea
  180. EL84
  181. Long tails and current sources
  182. How to reduce gain in mu-follower?
  183. Single Ended Amplifier 6P43P
  184. 6C33C spacing
  185. A very excitable Luminescence
  186. KT-88 Data sheet question.
  187. Good 12ax7
  188. Operating points theory...
  189. 1-stage (killer, literally) amp made of junk
  190. What should clipping look like? (AKA reading sine waves)
  191. Quicksilver Mono Amp Model 1300 - creating Auto Bias wanted
  192. 845 with kathode bias
  193. Looking for EI-75 80% perm ...
  194. Ambient temperature target
  195. Old radio
  196. JJ glowing twice as bright
  197. DPA150
  198. Discharging a capacitor - should I??
  199. German transformer builder
  200. 6P30B-V subminiature tube
  201. Improved Tube Headphones Amp
  202. Best method of reducing line voltage into vintage transformers?
  203. Harman-Kardon TA5000X, A500 or A50K OPT - Quality?
  204. hum measurement
  205. DIY 450VA+ multi-tapped tube power trafo
  206. DIY 450VA+ multi-tapped tube power trafo
  207. Duelund Alexander Copper Foil Capacitors
  208. Yaqin MS-20L tube recommendation
  209. Tube version of aleph-x. Is it possible?
  210. help - Looking for specs Trimax TA1439
  211. Mono 5W-17W Power Amp using EL84 push-pull
  212. Reference Books
  213. Tresco?
  214. BELL 3DT, Phono RIAA Odditty
  215. 6SL7/6V6 tubes in an RH84 SE amplifier?
  216. How to calculate max voltage swing in cathode follower?
  217. Silvaweld OTL Tube Reference 100 schematics
  218. Unison Research SMART 845
  219. 26/45 SE amp ?
  220. Sweep Tube SEP
  221. Help me find cirquit, I forgot where I last saw it?
  222. Plate resistor for FVP5a
  223. Simulation
  224. DHT w/ DC heater - How to rig cathode bias?
  225. schematics needed- Luxman MQ70
  226. CSS for 6c33?
  227. Svetlana (Winged C) 6L6GC vs. the Others...
  228. Power Supply Help- 807's, High Voltage
  229. Looking for info about a 1940s Amp
  230. More amplifiers in the Wireless World Archive
  231. why does my amp require a preamp?
  232. Why two GZ34 in this schematic?
  233. Floating Dc heaters, capacitor to ground
  234. anyone have experience with 1J17B tube
  235. Preventing arcing on standby switch?
  236. Help with buzzing mains transformer
  237. Balanced Amp Topology
  238. ECC33
  239. Distortion spectrum vs feedback
  240. Heaters question
  241. what's my fisher 400 off gassing?
  242. Executone schematic needed
  243. parafeed output amplifier
  244. CCCP SUBTUBE: my last project
  245. Aikido Line-Stage jumper question
  246. Tube Amplifier to power Gale GS401 speakers
  247. Bypass Cap on cathode?
  248. How to measure/calculate dB of negative feedback?
  249. Need your advices & experiences
  250. Parmeko gresham transformers specifications

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