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  1. UL Feedback Tap Calculation
  2. Precision Test Equipment tube tester
  3. Octal pentode sub for ef86?
  4. Help with guitar amp sound
  5. to mach1: tubecad regulator using tl431
  6. Thermal management: it this not really of concern?
  7. Signal phase shift through a tube amp
  8. Common-mode EI PS Chokes
  9. Signal pentode in current production
  10. Pentode vs Ultralinear
  11. Bogen CHA33/CHA33Y
  12. Sheet Metal Gauge
  13. Help with 6N6p
  14. Can anyone help, identifing selenium bridge hookup please.
  15. E182CC substitution ?
  16. Face Plate Printing and Silk Screening
  17. Funky reading 12B4A?
  18. Sovtek 5Y3 Issues
  19. from lilliput to gargantua (just for fun)
  20. Formula for calculating HT voltage?
  21. DIY Headamp for Sennheiser-650?
  22. Nuera Tube Amps
  23. Amplifier identification
  24. Perfect tube regulator
  25. Value of grid leak resistor
  26. Comments on this circuit
  27. Just grabbed this AF mesuring equipement, Any infos before restauration is Welcome
  28. Heater current monitoring...
  29. on-off switch position in PSU
  30. A better LDO heater regulator
  31. Guitar Head Amp Schematic
  32. any feedback on Russian gas regulators like SG4S and etc.?
  33. Some cathode follower questions
  34. rectifier voltage drop
  35. Anyone please explain"What is an A1,A2 in SE amp?
  36. Interesting link for guitar amps
  37. What is the correct plate voltage in this circuit?
  38. Any1 have an Osmond PCB library for tubes?
  39. best type cap for preamp PSU
  40. Steve Bench PP loadlines
  41. single Diode power supply?
  42. Spice Error
  43. Anyone have a Welborne Labs amp?
  44. Please help out a Noobie...
  45. wellborne labs
  46. best schematic designer for tubes?
  47. hum in 1 channel
  48. B+ time delay relay
  49. something is wrong with the shunt regulator
  50. Suggestions for a high end tube amp kit
  51. Conrad Johnson PV 7 problem
  52. Math to calc optimal voltage of tube dac to match amp input sensitivity?
  53. Power supply dilemma
  54. Transformer Placement 5E3
  55. Please help: no sound and blown fuse
  56. sparking Output transformer In Webcor 14x240 Amp
  57. Designing my very first tube amp...
  58. Diode bridge for Valve Buffered GC
  59. 6S41S (6C41C) Amplifier
  60. audio research sp11 upgrade help please
  61. The good, the bad, and the ugly OTL amplifiers
  62. Z2b tube rectifier
  63. Sparks inside GZ34
  64. Help with EV4417 6cm5/EL36
  65. Guitar Amps, Overdrive Pedals, and Space Charged Tubes
  66. My Cornet2 Tube Phono Preamp
  67. bright switch to bias circuit?
  68. Regulated AC...thought some of you might be interested
  69. Aikido PSU - integrated or standalone???
  70. Frank Philipse's tube site
  71. World' smallest GM-70 set
  72. Question on output hum on tube amp?
  73. Aikido Preamp
  74. Argh!!
  75. EL84 bias point
  76. Coupling cap rating
  77. Regulated power supply
  78. outstanding book??
  79. when the datasheet says "vertical mounting: up or down", does it mean...
  80. half wave rectifier will not saturate transformer core?
  81. Did I get in over my head too soon?!?
  82. Parallel output tubes
  83. Dropping filament volts/ L-W ramblings
  84. Rogers Cadet III Power problem ?
  85. about bi-cap
  86. HOT Iron ?
  87. how to set current in G Pimm's latest self-biasing CCS circuit?
  88. Low pass active tube crossover
  89. Ecological recycling amplifier (6CU6)
  90. Need ECF80 / 6BL8 tube spice 3f4 model
  91. Capacitor above chassis
  92. PS Help
  93. Bogen-Stein! mx60a mx-60a mo100a mo-100a
  94. Transmitter tubes
  95. Power Supply Construction
  96. what are the advantages of double core output transformers vs EI ?
  97. What is a reasonable amount ripple voltage for a 300B?
  98. "Old Like" sound transformer with a Tube !
  99. I coined the phrase HIGH VIVIDITY, to differentiate our amps from High Fidelity ones
  100. P-P resistance oddity
  101. Tube preamp vs. solid state
  102. 6l6 penthode triode
  103. Rising hum when turntable is plugged into preamp ??
  104. 6SL7 or 6SL7GT for broken Tubalizer
  105. Aikido PCB and AC filaments.
  106. Help with 300b proyect.
  107. 6P14P Amp Scratch Build
  108. 6GH8 - A Little Off?
  109. design and personality
  110. An all DHT push pull amp.
  111. Junk Pile Linestage
  112. need tube rectifier info
  113. Question on voltages
  114. How to change this design from penthode to triode or UL
  115. what glass-ware program?
  116. aikido 12b4 input 6sn7 output???
  117. GZ34 and temperature
  118. schematic search crate bv-60
  119. First Guitar Amp Help
  120. power supply for my single ended amp
  121. transmitter tube amp
  122. resistor and capacitor values for Aikido preamp
  123. need opinion on 2nd hand AF analyzers prices
  124. DH rectifier hookup.
  125. WE 310A vs. Russian 310A in WE91
  126. CRC PSU for preamp
  127. Question on the installation of LL1668 plate choke
  128. max plate voltage rating in tube datasheet
  129. Tube for a shunt voltage regulator
  130. choosing cap values for aikido
  131. Tubes in the Intermediate Stage
  132. c3m + 300b + miller capacitance
  133. How do I bias up a constant current series filament circuit?
  134. The perfect phono preamp.
  135. Got my 6BG6GA's last night
  136. Tubes4HiFi SP-6 preamp
  137. Stupid electrolytic cap question.......
  138. Shuguang 807s?
  139. LX-72A Sanity Check for Noooobie?
  140. Convert EL84 to 6V6? Anyone try this?
  141. PC96
  142. Ultrapath output transformers
  143. Grant RIAA phono with 12AX7/ECC83
  144. Tube VS SS voltage regulators - any advantages?
  145. Ra-a??
  146. Help with my el509 amp almost done but with one problem.
  147. McIntosh chassis help needed
  148. Tube Voltage Regulator Design
  149. DC Tube Amplifiers
  150. Coupling cap voltage rating
  151. Anyone experienced in the 76 tube?
  152. aikido thump
  153. bypassing preamp board in integrated amp
  154. Mallory FP 2x30/500 for Scott LX-72 - NOOB
  155. is it really required to use carbon comp for grid stoppers?
  156. How much trickle current can fixed bias cathode batteries stand?
  157. Who is the administrator?
  158. LM329 as voltage reference in a CCS.
  159. Euridice Preamp with 5842 and LL1660
  160. Trans. alignments
  161. Audio Note M3 Kit modification
  162. Has anyone simulated an "Aikido" amplifier?
  163. Upgrading ST70 PS w/ SS question
  164. 6N1 Chinese tube and others
  165. 12AT7 Linestage design
  166. ECF80 instead of 7199
  167. Modifying a tube tester into a curve tracer (oscilloscope X/Y outputs) ?
  168. 6922 vs 6SN7
  169. Transformer DCR's
  170. ferrite beads v. grid resistor
  171. What went wrong with my amp? Bass driver strange movement.
  172. Toccata Phono Preamp
  173. Drawbacks of Parafeed?
  174. aikido problem
  175. RS253 giant SE monoblock (Chinese)
  176. Plate chokes & Power chokes
  177. 10uF filter cap too small? PSU schematic inside
  178. HOT ROD DELUXE: CRACKLE...POP...what to do?
  179. converting Baldwin organ amp to guitar
  180. best amp for rock n roll
  181. quick question about tube relays
  182. Yeo's Simple EL84 with a twist
  183. ST-70 OPT, A-470 question
  184. meixing 805 tube amp problems
  185. Advice for NOOBie - Dad's Scott LK-72
  186. Peavey Valve King 112
  187. KT66 SE amp, grid current or not?
  188. 269EX in a champ?
  189. How do I achieve more output power?
  190. Driver stage load resistor
  191. More Edcor XSM10K/10K Specs
  192. DC filament
  193. driver stages
  194. Bay Area DIY is Cancelled Because....
  195. Is constant filament current better way to build amps?
  196. Next amp build - Trainwreck - Princeton - Deluxe ???
  197. Quicksilver M135 Output Transformers Color Code?
  198. Dynaco ST70 clone, tubes substitution question
  199. caddocks mk132: has anyone used them for tube projects?
  200. DIY Pro Audio Recording Gear - La2a, Pultec, more.
  201. size of filtering caps SS vs OTL tube
  202. Current rating and tube current draw
  203. NUCLON -- My first hybrid guitar amp
  204. PP splitters again
  205. preamp with output trannies.
  206. Is it the 6SN7 or me?
  207. My Kind of Guitar Tuner
  208. Regulating tube amp power supply - can Iget away with a simpler CLC filtering scheme?
  209. Manufacture date of 6SN7s
  210. simple 12AU7 cathode follower
  211. How's your bench, what's your favorite setup/tool ?
  212. Siemens H42 AM/FM receiver circuit diagram?
  213. 429A load lines
  214. Mu-stage on output
  215. My new project, 2 x KT88 60W amp
  216. Tube Amp Hum
  217. Modding MEIXING MC 3008
  218. crate vc 2110 schematic ???
  219. Will this work for an EL84 push pull?
  220. "Integrated" or "stand alone"
  221. Heater to cathode voltage limits in cascodes???
  222. some Japanese can help me? (OPT trafo winding)
  223. Quicksilver 8417 a class C amp?
  224. Newcomer, where to start?
  225. Benefits of Potted Output Transformers
  226. Transformer question
  227. 6AW6A, Unloaded
  228. Aikido PSU help
  229. Rectifier that doesn't need own filament supply?
  230. Plate to Cathode Cap -- what's this??
  231. Need Help Understanding/Optimising a Schematic
  232. Simple basic question quick
  233. problem on thorens PR15 (strange filaments circuity)
  234. My 1W 5687 SE Direct Coupled Power Amp
  235. VT-25 linestage + step-down trafo
  236. What to do with 803's
  237. Newbie: KT88 amp info needed
  238. 805 tube amp, uProcessor controlled
  239. Class A Tube BJT Hybrid
  240. John Broskie's enhanced T8
  241. Audio Research SP6 E
  242. André Charlin anybody got his Tube Amp
  243. Info needed - Shuguang SG120-C Integrated Amp
  244. Help with 6SN7 preamp
  245. 12b4 vs. aikido linestage
  246. KT88/6550 as Triode
  247. 6AU6WA triode connected as a line amp?
  248. A few basic noobie questions.
  249. Which connector for PSU/chassis B+ supply?
  250. Quad II-Forty schematic ?:

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