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  1. Power transformer question
  2. Tube construction materials
  3. LTP second grid
  4. How to figure out the bias point of fisher X-100A
  5. Schematic help! (Bell)
  6. Audio Note Soro SE SCHEMATICS
  7. 807 Tube Triode Connected
  8. Would you pls help.
  9. came across this nice 200W tube amp schematic
  10. Anyone seen this amp topology before?
  11. Max. grid resistance
  12. Yaqin mc10l "popping"
  13. Audio Electronics Supply
  14. Alamo Fury 2566
  15. My friends in the USA - tube stores in LA
  16. Can this marraige work?
  17. RJM with 12AY7
  18. Bias winding to power sand
  19. FM Tube radio design
  20. What do you use? Not technical but relative.
  21. looking for a pre-amp schematic
  22. I have waay too many 6DJ8's
  23. Tango NP126
  24. Two 6J5 versus one 6SN7
  25. Bunch of questions regarding plate CCS and some else.
  26. Tube Store in Washington DC (6C33C Triode Buy Where??)
  27. Scott 399 Receiver Schematics?
  28. Need help with 6l6GC choices
  29. Need Hammond/Everett drawings.
  30. 6V6 PP-based Baby Huey/Mullard inspired design needed...
  31. Ecf80
  32. Please Explain difference Mono vs Push Pull vs Single End etc
  33. VU Meters
  34. diy preamps, bottlehead, decware....
  35. Power supply choke help needed
  36. LED cathode biasing in push-pull input stage
  37. applying fixed bias to cathode followers
  38. Battieries for B+
  39. Put amp in chassis, then, right channel doesn't work!
  40. hammond transformers?
  41. Two Rectifiers, One transformer
  42. Cool problem with Marshall TSL!!!
  43. Tubes currently in production
  44. Rachel's Corner - Shuguang
  45. Small 50C5 Amp improvements
  46. Low voltage pentode?
  47. TX distortion
  48. DIY U-L curves
  49. Transformer spacing
  50. Covers for budget output transformers
  51. Correct for bipolar voltage doubler?
  52. Source for 100uf motor run cap.
  53. magnavox 185aa with 4-6v6
  54. Yaqin 300B re-biasing
  55. Line Amp Diy 6j1
  56. Diy Line Amp£_£_6sn7
  57. Diy Line Amp Audio Note M7
  58. Diy Line Amp Cat Sl-1
  59. Diy Line Amp Malanz 7
  60. Diy Line Amp Htm
  61. Diy Line Amp Jp-80
  62. Diy Line Amp 5670
  63. Quality difference between output transformers
  64. A group-build project for a tube power amp in India
  65. pilot light ideas please
  66. Small signal pentode - zener screen regulation - why not ??
  67. Another KT-88
  68. Rod Coleman filament supply circuit boards
  69. Losing the treble and transient response in this PX25 SE amp
  70. Calculating Zout for Pentode amp with NFB?
  71. Bypassing a volume pot
  72. Lab supply for cathode bias experiment question..
  73. Rheostat for adjustable "fixed" bias?
  74. Output transformer Question
  75. Real Cost of Decware Amplifiers
  76. Digitally driven tube pre-amp
  77. Real cost of Dynaco ST 70 Kits
  78. Fake electrolytics?
  79. Oddball Console Amplifier
  80. Transistor phase splitter (Yaqin MC-84L)
  81. Shuguang to stop 845 and 211
  82. first project.
  83. Help on capacitor info...
  84. Se Kt-66
  85. Is there a power supply guru?
  86. Direct Coupling question
  87. What's the best way to hook up an Isolation transformer
  88. Marzio &Jelasi's Direct Coupled SE Amp
  89. 6SN7 or 6SN7GT??
  90. HY40 Power Triode
  91. parallel capacitors in PS question
  92. Looking for feedback on Bottlehead amps
  93. First Watt F3 / Tube Audio Design TAD-125 Hibachi JFET amps
  94. S-5 Push Pull Power Supply Upgrade!
  95. Capacitor voltage rating conversion
  96. Output Transformer Air Gap
  97. PCF80 -Designing a Pentode Constant Current Sink - help needed.
  98. Purity and simplicity of amp design
  99. watt meters
  100. DIY Dynaco ST70
  101. Help need some info on this Raytheon
  102. Isolating parallel feed amplifiers
  103. Please help for B+ problem!
  104. Second Tubelab Simple SE board done
  105. "Sallen-Key" Public domain?
  106. Transformer questions / Good headphones?
  107. Which Spud Amp?
  108. Very simple SE Triode Help
  109. Tube friendly speakers
  110. Counterpoint SA5000 schematic
  111. Yaqin MC-10L
  112. Screen Driven Dissimilar Pentode SE Anti-Triode Spud
  113. Power tube bias increasing with signal.
  114. Preamp suggestion required pls
  115. How to change deemphasis from 75uS to 50uS for Fisher FM100
  116. Which 300B ?
  117. Custom OT for 6C33C tube - any advice
  118. s-5 tube amp hum troubles
  119. Cathode feedback on Mikael's SE KT88?
  120. RCA tube rectifier
  121. 300B Schematic
  122. Tubelab wiring
  123. My first amp!
  124. Building a Aikido preamplifier
  125. Tube rolling causes failure...
  126. Briefly subjected heaters to about 12v by accident.
  127. She lives!
  128. Wilcox Gay 5U
  129. 6EM7 project: maybe use more sand?
  130. 12B4A SET - any critiques on this project?
  131. Heathkit Manual
  132. What is this??
  133. Amp and Speakers decision
  134. Hey guitar joe...
  135. Question about Low Impedence Filters on a Bogen PA Head Need Info.
  136. counterpoint 3.1
  137. good book for learning the basics of tubes and tube amps
  138. Heater circuit - to twist or not to twist
  139. Rock and Flame: Wavebourn Barracuda
  140. Low voltage rectifiers?
  141. Horz Sweep amp Pent or screen drive
  142. Lessons learned building a 5VDC Power Supply for a 300B heater
  143. Getting frustrated--- amps and speakers for the noob
  144. Smallish chassis feasible? Multiple pics
  145. Using a Maida Regulator with a CCS
  146. Which Aikido pre-amp PCB for a newbie?
  147. Newbie wants to build Tubelab SE Monos.
  148. FM transmitter / PA
  149. What value attenuator would you use in front of a 396A in a preamp?
  150. Hybrid OTL Circlotron idea
  151. Heathkit aa-121
  152. Help please checking my B+ design
  153. Selenium rectifiers
  154. isolation transformer - high voltage.
  155. Cathode Bypass in a PP Output Stage
  156. Mcintosh Tube Amplifier Protection Circuit
  157. Where to start? Or: cool these plates down
  158. epiphone pacemaker 50 t
  159. Hum trouble on old PA amp
  160. Crazy newbie tube driver question
  161. UHF tubes for audio?
  162. Suggestion for this tube preamp
  163. PCB Board software?
  164. 300B push pull amp
  165. Simple P-P 84 proto
  166. Keeping cost down?
  167. Tube Amp Kit for newbie
  168. 40% Tap direct to plate
  169. Funny bias problem in PP EL34. Please help
  170. Transformer from Heathkit A-7 amp
  171. Any tube stores in Burnaby, Vancouver, Canada?
  172. B+ time delay circuit - your comments
  173. PCB mount line input transformer question
  174. SRPP circuit question
  175. Russian tubes - what pin material?
  176. Auto-bias - easy to convert to or not?
  177. old style anode/grid caps
  178. 6H30 Dual Triode
  179. Why would the frequency response vary so much on a pair of Monoblock amps?
  180. Disassembling output transformer
  181. Tube sockets
  182. H. P. Friedrichs
  183. The Rebuilding of Theta KT-88 Tube amp.
  184. Please check my PS pcb board layout for problems????
  185. glass capacitors
  186. Help w/fixing counterpoint Sa7 preamp
  187. IXYS 10M45 CCS IC question
  188. Wing-C 300B tubes and opinions
  189. PX25 DRD Power amp.
  190. rectifier tube recommendation please
  191. 6C33C to more standard triode conversion - any ideas?
  192. PP EL84 Build Questions (Bevois Valley)
  193. Tube line stage output impedance
  194. volume between gain stages
  195. Dyna ST70 PWR Tranny 6.3V Crnt Spec?
  196. Next Project - Darling Amplifier or 45
  197. tube magazines
  198. PSU choke help please
  199. PCB Trace properties for PP tube amplifier ( 12AQ5, 6v6 etc)
  200. TubelabSE phase
  201. EML 300B XLS and Mesh comparison
  202. UL - triode switch
  203. Spud anyone?
  204. Nooo! Almost have this amp built!
  205. Need help - Old cap can ID
  206. 16SL7+6SN7 Aikido
  207. 1600Hz Transformer?
  208. Anyone have a Bogen MX 60 Schematic they can post
  209. mc100b burned up
  210. DC heating, parallel diodes
  211. Identify Amperex Tube?
  212. Which speaker tap when going from UL to triode
  213. Tube wont bias...
  214. DIY stepped attenuator
  215. TV-7/DU KT88 Settings?
  216. Filmosound - Tone Knob - Tertiaries
  217. Hybrid Amp, Tube+MOS FET SE
  218. 3.1 integrated possible?
  219. Plate choke material, why to use amorphous core?
  220. Anything obviously wrong with my mic pre amp ?
  221. K-502 or Yamaha RX-V361 for Klipsch F-1?
  222. Help diagnosing phase-splitter
  223. question about Bruce's GGP preamp
  224. Rickenbacher amp HELP!!!
  225. interpreting max. values listed in datasheet
  226. zenith mlt 15 console record player problem
  227. ORIENTED or Not ORIENTED cores for OPT
  228. Audio Research SP-3-A-1 modified.........
  229. Tube heaters in series.
  230. Output transformer listening impressions?
  231. Tube buffer 6H6P after a DAC
  232. S-5 K16LS in enclosure - Pics
  233. Time to mourn the death of Broskie's Tube CAD blog?
  234. 6N6P preamp
  235. our Preamplifier using 2J27S tubes
  236. dc filament design question
  237. 6AV6A for meter driver
  238. AC wiring heaters, A or B ?
  239. Aikido preamp muting
  240. Help! New Yaoin MC-100B with intermittent crackling noise from speakers
  241. hummming YAHA
  242. leave a variac on all the time!
  243. More triodes
  244. Full Wave Rectifier
  245. Blowing B+ fuse
  246. PSRR of CF w/ CCS Sink
  247. MENG Series "EL34B" Integrated Amplifier
  248. Concertina Parafeed, or How to mess with OldEurope's mind...
  249. Phono stage success!
  250. A few pretty pictures and an ugly picture

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