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  1. Scott 222c mods...?
  2. Switching supply for 300B filaments
  3. ECF80/6BL8
  4. 24v tube buffer & line stage schematic
  5. Vintage gear hunting
  6. Seperate PSU Transformers? Filament Supplys?
  7. 828 is better
  8. Hum on a choke loaded stage
  9. SE Transformer question
  10. Design question - How to make amp porn visible?
  11. Leak Stereo 20 - Johan's Square Wave Theory
  12. K-12G First Time Build
  13. Vishay vt52-55 resistors in a tube amp
  14. EL84 Push-Pull ccs bias
  15. Eight 807's in Push Pull?
  16. Working with Current O/P DAC Chips
  17. Unison research Preludio schematic
  18. Rewinding Power transformer
  19. Information needed on RCA SPECIAL RED TUBES
  20. Score?
  21. Herron phono
  22. tube preamp + SS power amp.
  23. Puzzler
  24. HI-Fi 6p13p
  25. Resistor values
  26. To chassies SE amp,PSU question
  27. Grounding & board Layout questions
  28. Look for a beefy driver tube.
  29. ECC81
  30. 5687 v.s. 6922 preamp/xover
  31. amorphous iron core good or not
  32. Pre-Amp
  33. submini tube preamp is a success
  34. Roll off frequency.
  35. Materials Technology for Electron Tubes by Walter H. Kohl
  36. Grundig TK 46 manual
  37. How to determine a tube is shorted?
  38. Power supply problem
  39. SS power trans for tube experiments
  40. how to set output current on G Pimm's CCS circuit?
  41. Tube testing questions
  42. Push Pull Output Transformer wiring problem
  43. shunt regulator using VR tubes (with ccs like g pimm) and circuit load
  44. Stepped attenuators vs. Carbon pots
  45. hum/buzz with pot all the way up
  46. VacuTrace ... In Chicago?
  47. Lifesaver question on earthing
  48. Affordable, but good attenuators?
  49. Gu50 Set ?
  50. mounting an EL34 upside-down
  51. Direct coupled PP 2a3 amp - maths needed!!
  52. My 1st scratch build complete......
  53. Very Basic EL84 or EL34 DIY Amp
  54. Curcio Daniel Preamp Mods?
  55. Tube designs: 45 driving 45/2a3/300b?
  56. Adding secondary of output transformer into cathodes of output stage ? Eico ST-70
  57. Marantz 8 B : Output Transformer
  58. has anyone used a fan on their project?
  59. Audio Research SP12 heater arrangement
  60. tv damper diodes
  61. volume pot quite close to a tube - is this okay?
  62. UTC s42 special series
  63. 6H30P preamp schematics
  64. Digital potentiometer corrupt tube amps
  65. Alternative filament supply for 01A line stage
  66. Lamination Size
  67. Yaqin MC10L and KT88
  68. Help me read tube data sheets
  69. Quick Question (Driving 6L6GC's)
  70. Cause for concern -- scorch mark in tube
  71. why not 10k pot
  72. Dynaco Stereo 70 Output Transformer
  73. 6CJ3 rectifier or 6D22S rectifier
  74. Back-to-Back trannies
  75. Hamfest in Toronto area next weekend
  76. st70 bass response
  77. Triode "Champ" transformer v Edcor
  78. Low vs High aka Series vs Parallel Filaments
  79. Bogen monster MO200A schematic
  80. The Great Tempe Audio Shootout
  81. opinions on this p-p kt88
  82. Any XLR Tube Buffer Plans?
  83. Mystery transformers
  84. I need help with my next project
  85. A thought on Cathode feedback
  86. EL34 SE, direct coupled
  87. Ccs
  88. Hybrid amp: ECH83 + TDA2030A
  89. Leaving tube preamp always powered on.
  90. Variable 6922 heater to cathode voltage limit...?
  91. Is this risky?
  92. What to do with some WE tubes and others
  93. 6B4G SRPP
  94. pentode in triode mode SE vs a DHT SE like 2a3/300b
  95. dynakit decware bottlehead ... which to pick
  96. 6JC6 triode strapped?
  97. Help.. EZ81 power supply diagram
  98. Ear 8l6
  99. Voltage measurements from a blown 5AR4 vs. good 5Y3
  100. Sanity check on a 2A3 ultrapath with Pentode driver
  101. Star ground with dissimilar metals: concern?
  102. 5AR4 marked as 5V4GA?
  103. Calculating cathode bypass cap.
  104. Please need help! TUBE BIAS PROBE
  105. Aikido Phono Stage
  106. Using an El84 as a driver
  107. Transfromer value of this 300B circuit
  108. Chassis Layout & PS questions
  109. help needed for 1st DIY tube amp - Sakuma 845 SE
  110. Ideas for 4v filament triodes/pentodes
  111. Comments on Power Amp Viability
  112. Balanced active crossover advice
  113. The Tube Center
  114. Help1 with a 3 channel 2a3 amplifier
  115. volume control hum/noise
  116. PS choke magnetic induction
  117. Circlotron power supply question
  118. Autoformer as choke?
  119. E182CC
  120. Grundig Fine Arts OTL Amplifier
  121. Damper diodes, 6ax4 and or 6w4?
  122. Knight 333 / Pioneer SX 34B info needed.
  123. Gargantuan Linestage Output Capacitors
  124. Quad II Restoration
  125. Help identifying a tube.
  126. Tube filaments in series?
  127. Design of Resonant Input Choke PSU
  128. Dissimilar triode
  129. How important is the quality of a triode used as a cathode follower
  130. EL34B tubes
  131. Why not so common to split dual triodes between channels?
  132. In search of power supply schematic for phono preamp
  133. General Electric vs Toshiba 6L6's
  134. Audio Research Dual 75 Capacitor Source?
  135. Choosing A Cathode bypass capacitor
  136. 12AU7 SRPP buffer suggestions
  137. Pentode/triode switch question
  138. Lundahll 1669A Secondary voltage???
  139. Substituting tube rectifiers by silicon
  140. newbie question: is the connection to the output xformer somewhat odd?
  141. All quiet on the SN front - about darned time!
  142. Estimating power output
  143. Looking for KT88 Amplifier Schematic by Mikael Abdellah
  144. Comments on passive pre and cables
  145. curvecaptor
  146. 6b4g pushpull build!newbie
  147. Need help; I have "dog leg" shaped waveform on my amp
  148. Output Transformer Question?
  149. Urgent OT HELP needed ASAP please
  150. Questions on Triode Strapping
  151. Morgan Jones BALANCED?
  152. What are your RFI precautions?
  153. Pentodes without cathodes?
  154. help me
  155. Good quality 6600 CT OT
  156. Local Hamfest score!!!
  157. Unknown Transformer
  158. S5 11g help
  159. 6SN7 pre-amp
  160. These tube can be use for amplifier
  161. Any pitfalls to choke derived CT?
  162. Audio Research D76A bias adjustment
  163. I meet Mr. Morgan Jones
  164. st70 electrolytic caps
  165. Thank you SY
  166. el84 1 channel stopped working help
  167. Help! Weak Bass!
  168. never say never - 300B amps...
  169. 6aq5 Screen resistor?
  170. L. Tatro farm radios from 1930's.
  171. Published/DIY ultra-low THD designs?
  172. EL84 SE auto bias
  173. Kofi Annan in: "Oscillatin' in the Bevois Valley'"
  174. Subwoofer connections
  175. 6/30L2 - What to do with them ?
  176. PIONEER SA-810 Tube Amp Schematics
  177. EF86 Gm
  178. EL84/6BQ5 Ultra-Linear Push-Pull Recomendation
  179. Aria 6P14 makeover.
  180. switch for paralelled tube
  181. Curvecaptor with pentodes??
  182. Ground point for HF decoupling cap?
  183. Cancelling Harmonics
  184. Quiet Tube
  185. LM385 Adjustable voltage ref. diode as LED bias?
  186. Tubed Expression Pedal
  187. Any spice models around for AA5-esque battery tubes?
  188. Where to connect shielding
  189. Help 805 As that the friend makes to straighten even gallbladder machine
  190. studiogear of the beatles
  191. 6AK5 Triode Curves
  192. twisted pair signal, source selector and ground buss???
  193. Tiny Amplifiers
  194. A newly aquired Hum
  195. many jan tubes
  196. is this the correct way of adding a volume control?
  197. Basic DIY Valve Phono Stage
  198. 5879 Experience?
  199. personal jobs
  200. Wanted Triode strapped curves for pentode of ECL82.
  201. source selector / volume hum in Aikido
  202. DHTs and Cathode Bias
  203. Best SET driver stage with lots of B+?
  204. Tube Library Pspice error
  205. referencing DC heater to B+
  206. Double floating Circlotron
  207. Supply Capacitors ?
  208. Sakuma style Tango project
  209. MC10L is good or not
  210. Eico HF-20 & Claus Byrith PS voltage & power draw
  211. Voltage Regulator Tubes
  212. EL34 triode-connected grounding-grid curves?
  213. Pls help me understand AR SP6 circuit
  214. I'm looking for 417a/5842 Preamp Schematic without any Transformer, any suggestion ?
  215. Trouble in a new DIY amp.
  216. Suitable Transformers
  217. PT winding calculations HELP
  218. How to measure frequency response with a PC?
  219. Pspice Tube Generation Software
  220. Tektron tube amplifier Italy made
  221. What to do with 2x Stancor A3830?
  222. REQ: Schematics and tweaking tips
  223. Jadis Da 60 & 80
  224. 6L6 for a beginner, plus ECL86/6GW8
  225. Leak Stereo 20 clone? possibly with 6V6?
  226. Any comment on Vacuum State dpa300b??
  227. Radiotron Designers Handbook
  228. Kofi Annan in: "Buggin' the 'S' Outta Me!"
  229. 12B4 eqivalent : sonics-wise ?
  230. Any Eimac Scematics?
  231. What's a 6SL7 Good For?
  232. Where Can Buy 6c41
  233. would twisted pair from a network cable be suitable as hook-up wires inside an amp?
  234. use a 45 to drive a 45 ?
  235. Regulated heater reference
  236. Heater Elevation, how high?
  237. 6201 alternative
  238. 4V Tentlabs filament supply
  239. Difference between stereo & 2 monoblocks
  240. Parallel operation of triodes.
  241. input tubes using 6922?
  242. Looking for choices - affordable PP OPTs
  243. HH Scott Transformer #s
  244. Tips for rebuilding this amp?
  245. Need advice - what can I build with this power transformer?
  246. differences between K-12M and K-12G kits?
  247. 12B4 Line Stage with Fixed Bias?
  248. split push-pull output stage
  249. any thoughts/explanation on the power supply for this circuit?
  250. Where to begin on a PP?

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