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  1. Chassis ground blows fuse
  2. 7193 (2c22) preamp buzz/hum
  3. Se Opt
  4. Does anhone use those switching power supply for the heaters?
  5. Tube Minidoc, featuring New York Noise
  6. Help Choosing A Sowter Trans For My DAC?
  7. fisher 800c clipping at ultra low volume
  8. "audiodigit" tubalizer & tubepre original schematic
  9. rating of series caps
  10. F704
  11. tube socket PCB library or dimensions
  12. motorboating
  13. 6AN8 Triode connection + EL 84 PP
  14. Please help amend 6AS7PP circuit
  15. El84 Pp
  16. 6V6 Ultralinear
  17. Dear Moderators
  18. 845 se
  19. Bell 2122-B integrated amp - tube suggestions
  20. Wirewound pot for Rk
  21. KT88/90 F2011 Schematic
  22. United Electric 967
  23. Scott 222c mods...?
  24. Switching supply for 300B filaments
  25. ECF80/6BL8
  26. 24v tube buffer & line stage schematic
  27. Vintage gear hunting
  28. Seperate PSU Transformers? Filament Supplys?
  29. 828 is better
  30. Hum on a choke loaded stage
  31. SE Transformer question
  32. Design question - How to make amp porn visible?
  33. Leak Stereo 20 - Johan's Square Wave Theory
  34. K-12G First Time Build
  35. Vishay vt52-55 resistors in a tube amp
  36. EL84 Push-Pull ccs bias
  37. Eight 807's in Push Pull?
  38. Working with Current O/P DAC Chips
  39. Unison research Preludio schematic
  40. Rewinding Power transformer
  41. Information needed on RCA SPECIAL RED TUBES
  42. Score?
  43. Herron phono
  44. tube preamp + SS power amp.
  45. Puzzler
  46. HI-Fi 6p13p
  47. Resistor values
  48. To chassies SE amp,PSU question
  49. Grounding & board Layout questions
  50. Look for a beefy driver tube.
  51. ECC81
  52. 5687 v.s. 6922 preamp/xover
  53. amorphous iron core good or not
  54. Pre-Amp
  55. submini tube preamp is a success
  56. Roll off frequency.
  57. Materials Technology for Electron Tubes by Walter H. Kohl
  58. Grundig TK 46 manual
  59. I'm anti-expensive audio parts but man, a good capacitor can make a difference
  60. How to determine a tube is shorted?
  61. Power supply problem
  62. SS power trans for tube experiments
  63. how to set output current on G Pimm's CCS circuit?
  64. Tube testing questions
  65. Push Pull Output Transformer wiring problem
  66. shunt regulator using VR tubes (with ccs like g pimm) and circuit load
  67. Stepped attenuators vs. Carbon pots
  68. hum/buzz with pot all the way up
  69. VacuTrace ... In Chicago?
  70. Lifesaver question on earthing
  71. Affordable, but good attenuators?
  72. Gu50 Set ?
  73. mounting an EL34 upside-down
  74. Direct coupled PP 2a3 amp - maths needed!!
  75. My 1st scratch build complete......
  76. Very Basic EL84 or EL34 DIY Amp
  77. Curcio Daniel Preamp Mods?
  78. Tube designs: 45 driving 45/2a3/300b?
  79. Adding secondary of output transformer into cathodes of output stage ? Eico ST-70
  80. Marantz 8 B : Output Transformer
  81. has anyone used a fan on their project?
  82. Audio Research SP12 heater arrangement
  83. tv damper diodes
  84. volume pot quite close to a tube - is this okay?
  85. UTC s42 special series
  86. 6H30P preamp schematics
  87. Digital potentiometer corrupt tube amps
  88. Alternative filament supply for 01A line stage
  89. Lamination Size
  90. Yaqin MC10L and KT88
  91. Help me read tube data sheets
  92. Quick Question (Driving 6L6GC's)
  93. Cause for concern -- scorch mark in tube
  94. why not 10k pot
  95. Dynaco Stereo 70 Output Transformer
  96. 6CJ3 rectifier or 6D22S rectifier
  97. Back-to-Back trannies
  98. Hamfest in Toronto area next weekend
  99. st70 bass response
  100. Triode "Champ" transformer v Edcor
  101. Low vs High aka Series vs Parallel Filaments
  102. Bogen monster MO200A schematic
  103. The Great Tempe Audio Shootout
  104. opinions on this p-p kt88
  105. Any XLR Tube Buffer Plans?
  106. Mystery transformers
  107. I need help with my next project
  108. A thought on Cathode feedback
  109. EL34 SE, direct coupled
  110. Ccs
  111. Hybrid amp: ECH83 + TDA2030A
  112. Leaving tube preamp always powered on.
  113. Variable 6922 heater to cathode voltage limit...?
  114. Is this risky?
  115. What to do with some WE tubes and others
  116. 6B4G SRPP
  117. pentode in triode mode SE vs a DHT SE like 2a3/300b
  118. dynakit decware bottlehead ... which to pick
  119. 6JC6 triode strapped?
  120. Searching for Raw Turrets
  121. Help.. EZ81 power supply diagram
  122. Ear 8l6
  123. Voltage measurements from a blown 5AR4 vs. good 5Y3
  124. Sanity check on a 2A3 ultrapath with Pentode driver
  125. Star ground with dissimilar metals: concern?
  126. 5AR4 marked as 5V4GA?
  127. Calculating cathode bypass cap.
  128. Please need help! TUBE BIAS PROBE
  129. Aikido Phono Stage
  130. Using an El84 as a driver
  131. Transfromer value of this 300B circuit
  132. Chassis Layout & PS questions
  133. help needed for 1st DIY tube amp - Sakuma 845 SE
  134. Ideas for 4v filament triodes/pentodes
  135. Comments on Power Amp Viability
  136. Balanced active crossover advice
  137. The Tube Center
  138. Help1 with a 3 channel 2a3 amplifier
  139. volume control hum/noise
  140. PS choke magnetic induction
  141. Circlotron power supply question
  142. Autoformer as choke?
  143. E182CC
  144. Grundig Fine Arts OTL Amplifier
  145. Damper diodes, 6ax4 and or 6w4?
  146. Knight 333 / Pioneer SX 34B info needed.
  147. Gargantuan Linestage Output Capacitors
  148. Quad II Restoration
  149. Help identifying a tube.
  150. Tube filaments in series?
  151. Design of Resonant Input Choke PSU
  152. Dissimilar triode
  153. How important is the quality of a triode used as a cathode follower
  154. EL34B tubes
  155. Why not so common to split dual triodes between channels?
  156. In search of power supply schematic for phono preamp
  157. General Electric vs Toshiba 6L6's
  158. Audio Research Dual 75 Capacitor Source?
  159. Choosing A Cathode bypass capacitor
  160. 12AU7 SRPP buffer suggestions
  161. Pentode/triode switch question
  162. Lundahll 1669A Secondary voltage???
  163. Substituting tube rectifiers by silicon
  164. newbie question: is the connection to the output xformer somewhat odd?
  165. All quiet on the SN front - about darned time!
  166. Estimating power output
  167. Looking for KT88 Amplifier Schematic by Mikael Abdellah
  168. Comments on passive pre and cables
  169. curvecaptor
  170. 6b4g pushpull build!newbie
  171. Need help; I have "dog leg" shaped waveform on my amp
  172. Output Transformer Question?
  173. Urgent OT HELP needed ASAP please
  174. Questions on Triode Strapping
  175. Morgan Jones BALANCED?
  176. What are your RFI precautions?
  177. Pentodes without cathodes?
  178. help me
  179. Good quality 6600 CT OT
  180. Local Hamfest score!!!
  181. Unknown Transformer
  182. S5 11g help
  183. 6SN7 pre-amp
  184. These tube can be use for amplifier
  185. Any pitfalls to choke derived CT?
  186. Audio Research D76A bias adjustment
  187. I meet Mr. Morgan Jones
  188. st70 electrolytic caps
  189. Thank you SY
  190. el84 1 channel stopped working help
  191. Help! Weak Bass!
  192. never say never - 300B amps...
  193. 6aq5 Screen resistor?
  194. L. Tatro farm radios from 1930's.
  195. Published/DIY ultra-low THD designs?
  196. EL84 SE auto bias
  197. Kofi Annan in: "Oscillatin' in the Bevois Valley'"
  198. Subwoofer connections
  199. 6/30L2 - What to do with them ?
  200. PIONEER SA-810 Tube Amp Schematics
  201. EF86 Gm
  202. EL84/6BQ5 Ultra-Linear Push-Pull Recomendation
  203. Aria 6P14 makeover.
  204. switch for paralelled tube
  205. Curvecaptor with pentodes??
  206. Ground point for HF decoupling cap?
  207. Cancelling Harmonics
  208. Quiet Tube
  209. LM385 Adjustable voltage ref. diode as LED bias?
  210. Tubed Expression Pedal
  211. Any spice models around for AA5-esque battery tubes?
  212. Where to connect shielding
  213. Help 805 As that the friend makes to straighten even gallbladder machine
  214. studiogear of the beatles
  215. 6AK5 Triode Curves
  216. twisted pair signal, source selector and ground buss???
  217. Tiny Amplifiers
  218. A newly aquired Hum
  219. many jan tubes
  220. is this the correct way of adding a volume control?
  221. Basic DIY Valve Phono Stage
  222. 5879 Experience?
  223. personal jobs
  224. Wanted Triode strapped curves for pentode of ECL82.
  225. source selector / volume hum in Aikido
  226. DHTs and Cathode Bias
  227. Best SET driver stage with lots of B+?
  228. Tube Library Pspice error
  229. referencing DC heater to B+
  230. Double floating Circlotron
  231. Supply Capacitors ?
  232. Sakuma style Tango project
  233. MC10L is good or not
  234. Eico HF-20 & Claus Byrith PS voltage & power draw
  235. Voltage Regulator Tubes
  236. EL34 triode-connected grounding-grid curves?
  237. Pls help me understand AR SP6 circuit
  238. I'm looking for 417a/5842 Preamp Schematic without any Transformer, any suggestion ?
  239. Trouble in a new DIY amp.
  240. Suitable Transformers
  241. PT winding calculations HELP
  242. How to measure frequency response with a PC?
  243. Pspice Tube Generation Software
  244. Tektron tube amplifier Italy made
  245. What to do with 2x Stancor A3830?
  246. REQ: Schematics and tweaking tips
  247. Jadis Da 60 & 80
  248. 6L6 for a beginner, plus ECL86/6GW8
  249. Leak Stereo 20 clone? possibly with 6V6?
  250. Any comment on Vacuum State dpa300b??

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