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  1. 10k winding, 100k pot
  2. What is the definition of a 'good tube'?
  3. 3-stage DC-coupled Ampl
  4. 1946 Philco Tube Receiver
  5. A New Source for James Transformers
  6. Edcor Site Down? Gone? anyone know anything?
  7. How to calculate DRD amps..
  8. PL-519 Tube - Tell me more please...
  9. Need ideas for amp with 2A3, One Electron UBT-3
  10. Favourites discrete brand for tube amp
  11. Pharmicia EPS500/400 Power supply - tube use
  12. Black Art Audio
  13. 12AX7/12BH7 Hammond Tube Preamp Project
  14. Dampen transformer endbells?
  15. Do I have DC on my AC line?
  16. GM-70 cathode feed SE amplifier
  17. Rogers cadet mk 2 newbie project experience required
  18. Mcintosh amps transformer rewinding, help needed please!
  19. Using an output tranny from a stereo for a single-ended amplifier ?
  20. 6336A Single Ended.
  21. UA 175 Urei 175
  22. Morgan Jones 5842 RIAA
  23. Question about current ratings of Hammond 300 series power transformers.
  24. Cathode Windings
  25. Phono stage for 12B4 amp [from previous thread]
  26. Looking for schematic of 26 WOT Preamp
  27. Transformer Lam Questions
  28. Schottky diode bias
  29. ACROSOUND direct-couple EL84 amplifier question
  30. RH807 CCS loaded
  31. Audio Note Kit 1 PSU question
  32. B&K 500 Tube Tester Calibration
  33. New kt88's or 6550
  34. Bias Supply resistors
  35. Incredible source for used transformers and parts!
  36. Reclaimed Hammond H100 PSU's
  37. Arc Vt-60 Cloned :-)
  38. First Time Pre Amp Build
  39. Tubelab SE 300B low level hum, help
  40. 845 - Progress so far
  41. Nube challange12AX7 to drive 6C4
  42. 7th harmonic distortion from PP pentodes depends on bias?
  43. West Output Transformers?
  44. Help me design my DAC/Line Preamp.
  45. Hybrid preamp tube problemHi,
  46. sweept tubes for simple Se recommendation?
  47. Building RH84 SE tube amp.
  48. Question - THD Measrement/Spectrum Analyzis
  49. What to do with TMC tube radio gear?
  50. Easy & Safe & Good sounding gainclone tube buffer
  51. Compactron (31AL10) Head-Scratcher
  52. What cable do you use from input socket to volume pot
  53. problem with 12AE6A buffer
  54. Parafeed dc blocking/coupling cap help
  55. Funky Looking 15DQ8s
  56. 12SN7 vs 7N7 bs 6SN7
  57. Correct Pins For EL84 Triode Strap
  58. Dimensions for anode cap sizes?
  59. Mains transformer help needed please
  60. Tone Stack Challenge
  61. Aikido 6SN7 input 5687 output
  62. FRANK"S 6SN7 preamp/linestage
  63. Pentode grid question...
  64. Hybrid fullwave rectifier
  65. 300B stereo amp project help
  66. EdcorEurope
  67. Can AC wires induce hum in output transformers?
  68. Would you use a 4 ohm tap with these speakers?
  69. Changing grid leak bias preamp to cathode bias
  70. 304tl se amp
  71. 5687 Srpp
  72. Dumb Question Brain is numb today!
  73. What a Deal!
  74. Roll Chart for 6DJ8/6922/7308 on Philco 9100 help
  75. MeiXing MC-805AA biasing
  76. whats a good diy tube preamp kit
  77. SimpleSE parts list
  78. Matched tubes or not matched
  79. wood gnomes really do live in france
  80. Pathos Classic one
  81. A Uk supplier of valve amp kits
  82. Detached getter?
  83. 12B4 Line Stage Amp
  84. How do I control volume on Dynaco ST-70?
  85. A few questions from a total novice.
  86. RCA preamp modification
  87. Bogen Challenger CH8 conversion...newb needs help!
  88. 6AU6A - Micropowered tube amp
  89. Yet another DHT filament supply
  90. where to find 5998 ?
  91. Mcintosh MA 2275 Schematic Required
  92. Help on sonic frontier sf line 1 preamp
  93. Voice of Music Reel-Reel schematic needed
  94. Old radio tubes
  95. Alpha Pots
  96. Bleeders values and ratings
  97. Tube audio circuit analysis
  98. Audio Research LS15 circuit and description
  99. OPT Trafo
  100. OPT test data?
  101. looking for the top 6080 amp schematics
  102. vu meter
  103. Walkthrough: Pioneer SM-83 Tube Amp Restoration
  104. First Amp Build....!
  105. Will This work?
  106. Simple SE hookup wiring
  107. building a lit up tube display
  108. Push-Pull 6CL5's
  109. 2A3 power adjustments by channel
  110. Dead 12ax7 gain stage - Help...
  111. Best 300B amp schematics
  112. Stuck on Standby
  113. Newbee wants to learn about tube amps, etc...
  114. Recent Ad on Craig's List
  115. Pitfalls to warmup delay in DC coupled multiple railed amps?
  116. jan 6832 sub miniature tube
  117. Anti-Triode SEPP, how to do best?
  118. Some Help with Feedback Please!
  119. Cary 300SEI, likely capacitor failure
  120. Ballast Tube Current Source
  121. Ray Lumley m100 schematic needed
  122. Feedback question
  123. CMRR from parallel heaters?
  124. bevois valley clone from eico hf-12 iron..
  125. 27/37/56/76 plate dissipation
  126. Bell 2420 Amplifier Schematic Needed...
  127. How It Works Video
  128. Have I got this right?
  129. any simple circuits I can add to a dac?
  130. neg feed back into v/slope stereo 2 pre-amp
  131. Using 12AX7 as input with feedback
  132. My first power supply
  133. Unknown tube similar to px4
  134. Anyone know of some ridiculously powerful triodes for class A useage?
  135. Bias Voltage
  136. Looking for tubes in Germany
  137. Substituting GU50 tubes for KT88
  138. Parts mined from an AKAI 1800L, what to do?
  139. Has anyone built this amp??????
  140. Another TubeLab SimpleSE Build
  141. Output transformers bandwidth/frequency range
  142. Which power supply would you use?
  143. Mullard Articles
  144. SimpleSE - motor run cap specs
  145. Can I reverse leads on an OT?
  146. 9 pin version of a 6SJ7?
  147. 6550 stock ?
  148. Fisher Tube Tuner Restoration Walkthrough
  149. Futterman H-3
  150. simple 6080/6as7 ppp/circlotron project
  151. My unbalanced preamp problem
  152. Gu50
  153. Any Simple CX310 SE schematics around?
  154. Two EI Power Transformers Orientation?
  155. Question on Hybrid Bridge using 5AR4
  156. Recommend a project for a n00b
  157. Help! el34 8pin to 7pin conversion
  158. Converting Yarland FV-34AIII to Triode and Zero NF
  159. 5U4GB PS question
  160. 6X8 Pentode/Triode Musings
  161. DDD mfg co High Voltage power supply?
  162. Mistake on OPT connections : have I damaged something ?
  163. Looking for Jim Morrison Siren Song preamp schematic
  164. cap question....
  165. Ming Da MC368-B90
  166. single tube to drive 300ohm headphones
  167. Negative Feedback?
  168. Possible to convert an oscilloscope into a tube amp?
  169. "Junkbox" 2A5 SE
  170. Power supply testing
  171. Tubeamp power supply - LC question
  172. tube amp coupling cap - audiospace
  173. Radford pentode-triode LTP splitter
  174. Tube bias testers, your opinions, please.
  175. Just saw this and thought I'd pass it along. . .
  176. 6KG6-EL509-EL519 Schematics wanted
  177. Difference between SE output transformer and push-pull output transformers
  178. Sourcing OPTs in Australia
  179. Is there a LOCTAL equiv to a 6V6?
  180. 10m45s LTspice model
  181. What circuit and tube to be used
  182. experimental 6L6G / 6BG6G amp design brainstorm
  183. 29GK6 heater current?
  184. Bench PS: stacking DC supplies
  185. Mr Liung schematics
  186. Want to build tube amp
  187. Back to back transformers.
  188. Using Battery for 300v B+ ?
  189. Anyone recognice this RIAA?
  190. Power cord replacement
  191. Negative LTP CCS supply
  192. c-j pre amp blowing tubes?
  193. first amp build
  194. Tube Mic Preamp - which Edcor transformer?
  195. Scaling the SLCF for other voltage - help
  196. Question about Allied & Hammond Power Transformer Ratings
  197. Education
  198. Tubelab SE with a 6BX7 to drive 845s
  199. Bias Ground
  200. Suggestions for RIAA preamp?
  201. External Test Points
  202. b2spice model request
  203. 12aY 7 preamp out
  204. 3B7 Loctal DHT
  205. Aikido All in One line stage amp PCB
  206. SS power supply.
  207. 6AU6 pentodes
  208. Parafeed with NP electrolytic?
  209. Charlie K - RIP
  210. Need some advise with a hum problem
  211. What resistor should I use?
  212. IN18 nixies
  213. Tubelab SE build and power supply questions.
  214. Quality of S5's K-12G in proposed system
  215. Transformer volume control questions.
  216. Power transformer star ground
  217. Shielding and chassis
  218. Side project - d3a and 6c41c
  219. Cathode-heater leakage
  220. Bell 2122 volume drop off
  221. -500V Maida regulator inquiry
  222. 7591 is glowing RED
  223. Hum problem
  224. Need PS schematic for Musical Machine
  225. Polystyrene capacitor as coupling in output tube stages
  226. Help needed with 10M45S integration .
  227. Ultrasonic Cleaning??????
  228. The daunting world of tubes (where to start)
  229. help 124.3 vac
  230. Bat VK3i buzzing noise
  231. Audioromy FU13 (813) diagram and mods
  232. any complete schematic for 6ak5?
  233. Weird fuzz from Aikido Pre, HELP!
  234. Question about tube amplifier.
  235. 811a rating question
  236. Anode chokes DIY?
  237. EI laminations in Europe
  238. Needed: transformer core materials cobalt nickel
  239. Anybody from Italy - please help
  240. Bogen AP35 amp problem
  241. Question about a VR screen supply
  242. DIY Amp Contest in Japan
  243. Hot 5AR4/GZ34 arcing on powerup surge?
  244. Rh84 Ptx
  245. Buzz. Grounding-related?
  246. 50/60Hz Hum - Your Expert Opinion Please
  247. Static Gm test
  248. High Voltage negative regulators
  249. where do i find old tube car radio schematics?
  250. Burned Up Transformer in HiFi 6p3p Tube Amplifier

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