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  1. Wurlitzer/Fisher Amp Musings
  2. please check my work
  3. How to get cathode bias info from grid bias info?
  4. SE 300B Integrated Amp: Transformers
  5. Positive feedback, improperly drawn screen, or WTF?
  6. GE Console RC 7100 A - need some help!
  7. Output tube for 600V B+, 5800 ohm primary PP, tertiary 25% UL taps?
  8. Still tring to find a couple 100uf motor runs
  9. small push-pull amp to preamp
  10. Electraprint EL84 PP with PSA-2N
  11. OpAmp Swap?
  12. Bogen MX-60A- output transformer bandwidth?
  13. 6AS7 Parallel Feed Amp
  14. PSpice model of output transformer
  15. simple guitar push pull amp
  16. Siemens capacitor
  17. Super 6BG6 vs. 6550
  18. 5687 line stage
  19. Audio Standards
  20. 4 x used 5867A (TB3/750) triodes
  21. 12au7 who has the best ultra low noise ???
  22. Questions about tweaking the Miniblok SET...
  23. The core -sonic reasons
  24. Removing pot from valve pre amp
  25. Power transformer question
  26. Tube construction materials
  27. LTP second grid
  28. How to figure out the bias point of fisher X-100A
  29. Schematic help! (Bell)
  30. Audio Note Soro SE SCHEMATICS
  31. 807 Tube Triode Connected
  32. Would you pls help.
  33. came across this nice 200W tube amp schematic
  34. Anyone seen this amp topology before?
  35. Max. grid resistance
  36. Yaqin mc10l "popping"
  37. Audio Electronics Supply
  38. Alamo Fury 2566
  39. My friends in the USA - tube stores in LA
  40. Can this marraige work?
  41. RJM with 12AY7
  42. Bias winding to power sand
  43. FM Tube radio design
  44. What do you use? Not technical but relative.
  45. looking for a pre-amp schematic
  46. I have waay too many 6DJ8's
  47. Tango NP126
  48. Two 6J5 versus one 6SN7
  49. Bunch of questions regarding plate CCS and some else.
  50. Tube Store in Washington DC (6C33C Triode Buy Where??)
  51. Scott 399 Receiver Schematics?
  52. Need help with 6l6GC choices
  53. Need Hammond/Everett drawings.
  54. 6V6 PP-based Baby Huey/Mullard inspired design needed...
  55. Ecf80
  56. Please Explain difference Mono vs Push Pull vs Single End etc
  57. VU Meters
  58. diy preamps, bottlehead, decware....
  59. Power supply choke help needed
  60. LED cathode biasing in push-pull input stage
  61. applying fixed bias to cathode followers
  62. Battieries for B+
  63. Put amp in chassis, then, right channel doesn't work!
  64. hammond transformers?
  65. Two Rectifiers, One transformer
  66. Cool problem with Marshall TSL!!!
  67. Tubes currently in production
  68. Rachel's Corner - Shuguang
  69. Small 50C5 Amp improvements
  70. Low voltage pentode?
  71. TX distortion
  72. DIY U-L curves
  73. Transformer spacing
  74. Covers for budget output transformers
  75. Correct for bipolar voltage doubler?
  76. Source for 100uf motor run cap.
  77. magnavox 185aa with 4-6v6
  78. Yaqin 300B re-biasing
  79. Line Amp Diy 6j1
  80. Diy Line Amp£_£_6sn7
  81. Diy Line Amp Audio Note M7
  82. Diy Line Amp Cat Sl-1
  83. Diy Line Amp Malanz 7
  84. Diy Line Amp Htm
  85. Diy Line Amp Jp-80
  86. Diy Line Amp 5670
  87. Quality difference between output transformers
  88. A group-build project for a tube power amp in India
  89. pilot light ideas please
  90. Small signal pentode - zener screen regulation - why not ??
  91. Another KT-88
  92. Rod Coleman filament supply circuit boards
  93. Losing the treble and transient response in this PX25 SE amp
  94. Calculating Zout for Pentode amp with NFB?
  95. Bypassing a volume pot
  96. Lab supply for cathode bias experiment question..
  97. Rheostat for adjustable "fixed" bias?
  98. Output transformer Question
  99. Real Cost of Decware Amplifiers
  100. Digitally driven tube pre-amp
  101. Real cost of Dynaco ST 70 Kits
  102. Fake electrolytics?
  103. Oddball Console Amplifier
  104. Transistor phase splitter (Yaqin MC-84L)
  105. Shuguang to stop 845 and 211
  106. first project.
  107. Help on capacitor info...
  108. Se Kt-66
  109. Is there a power supply guru?
  110. Direct Coupling question
  111. What's the best way to hook up an Isolation transformer
  112. Marzio &Jelasi's Direct Coupled SE Amp
  113. 6SN7 or 6SN7GT??
  114. HY40 Power Triode
  115. parallel capacitors in PS question
  116. Looking for feedback on Bottlehead amps
  117. First Watt F3 / Tube Audio Design TAD-125 Hibachi JFET amps
  118. S-5 Push Pull Power Supply Upgrade!
  119. Capacitor voltage rating conversion
  120. Output Transformer Air Gap
  121. PCF80 -Designing a Pentode Constant Current Sink - help needed.
  122. Purity and simplicity of amp design
  123. watt meters
  124. DIY Dynaco ST70
  125. Help need some info on this Raytheon
  126. Isolating parallel feed amplifiers
  127. Please help for B+ problem!
  128. Second Tubelab Simple SE board done
  129. "Sallen-Key" Public domain?
  130. Transformer questions / Good headphones?
  131. Which Spud Amp?
  132. Very simple SE Triode Help
  133. Tube friendly speakers
  134. Counterpoint SA5000 schematic
  135. Yaqin MC-10L
  136. Screen Driven Dissimilar Pentode SE Anti-Triode Spud
  137. Power tube bias increasing with signal.
  138. Preamp suggestion required pls
  139. How to change deemphasis from 75uS to 50uS for Fisher FM100
  140. Which 300B ?
  141. Custom OT for 6C33C tube - any advice
  142. s-5 tube amp hum troubles
  143. Cathode feedback on Mikael's SE KT88?
  144. RCA tube rectifier
  145. 300B Schematic
  146. Tubelab wiring
  147. My first amp!
  148. Building a Aikido preamplifier
  149. Tube rolling causes failure...
  150. Briefly subjected heaters to about 12v by accident.
  151. She lives!
  152. Wilcox Gay 5U
  153. 6EM7 project: maybe use more sand?
  154. 12B4A SET - any critiques on this project?
  155. Heathkit Manual
  156. What is this??
  157. Amp and Speakers decision
  158. Hey guitar joe...
  159. Question about Low Impedence Filters on a Bogen PA Head Need Info.
  160. counterpoint 3.1
  161. good book for learning the basics of tubes and tube amps
  162. Heater circuit - to twist or not to twist
  163. Rock and Flame: Wavebourn Barracuda
  164. Low voltage rectifiers?
  165. Horz Sweep amp Pent or screen drive
  166. Lessons learned building a 5VDC Power Supply for a 300B heater
  167. Getting frustrated--- amps and speakers for the noob
  168. Smallish chassis feasible? Multiple pics
  169. Using a Maida Regulator with a CCS
  170. Which Aikido pre-amp PCB for a newbie?
  171. Newbie wants to build Tubelab SE Monos.
  172. FM transmitter / PA
  173. What value attenuator would you use in front of a 396A in a preamp?
  174. Hybrid OTL Circlotron idea
  175. Heathkit aa-121
  176. Help please checking my B+ design
  177. Selenium rectifiers
  178. isolation transformer - high voltage.
  179. Cathode Bypass in a PP Output Stage
  180. Mcintosh Tube Amplifier Protection Circuit
  181. Where to start? Or: cool these plates down
  182. epiphone pacemaker 50 t
  183. Hum trouble on old PA amp
  184. Crazy newbie tube driver question
  185. UHF tubes for audio?
  186. Suggestion for this tube preamp
  187. PCB Board software?
  188. 300B push pull amp
  189. Simple P-P 84 proto
  190. Keeping cost down?
  191. Tube Amp Kit for newbie
  192. 40% Tap direct to plate
  193. Funny bias problem in PP EL34. Please help
  194. Transformer from Heathkit A-7 amp
  195. Any tube stores in Burnaby, Vancouver, Canada?
  196. B+ time delay circuit - your comments
  197. PCB mount line input transformer question
  198. SRPP circuit question
  199. Russian tubes - what pin material?
  200. Auto-bias - easy to convert to or not?
  201. old style anode/grid caps
  202. 6H30 Dual Triode
  203. Why would the frequency response vary so much on a pair of Monoblock amps?
  204. Disassembling output transformer
  205. Tube sockets
  206. H. P. Friedrichs
  207. The Rebuilding of Theta KT-88 Tube amp.
  208. Please check my PS pcb board layout for problems????
  209. glass capacitors
  210. Help w/fixing counterpoint Sa7 preamp
  211. IXYS 10M45 CCS IC question
  212. Wing-C 300B tubes and opinions
  213. PX25 DRD Power amp.
  214. rectifier tube recommendation please
  215. 6C33C to more standard triode conversion - any ideas?
  216. PP EL84 Build Questions (Bevois Valley)
  217. Tube line stage output impedance
  218. volume between gain stages
  219. Dyna ST70 PWR Tranny 6.3V Crnt Spec?
  220. Next Project - Darling Amplifier or 45
  221. tube magazines
  222. PSU choke help please
  223. PCB Trace properties for PP tube amplifier ( 12AQ5, 6v6 etc)
  224. TubelabSE phase
  225. EML 300B XLS and Mesh comparison
  226. UL - triode switch
  227. Spud anyone?
  228. Nooo! Almost have this amp built!
  229. Need help - Old cap can ID
  230. 16SL7+6SN7 Aikido
  231. 1600Hz Transformer?
  232. Anyone have a Bogen MX 60 Schematic they can post
  233. mc100b burned up
  234. DC heating, parallel diodes
  235. Identify Amperex Tube?
  236. Which speaker tap when going from UL to triode
  237. Tube wont bias...
  238. DIY stepped attenuator
  239. TV-7/DU KT88 Settings?
  240. Filmosound - Tone Knob - Tertiaries
  241. Hybrid Amp, Tube+MOS FET SE
  242. 3.1 integrated possible?
  243. Plate choke material, why to use amorphous core?
  244. Anything obviously wrong with my mic pre amp ?
  245. K-502 or Yamaha RX-V361 for Klipsch F-1?
  246. Help diagnosing phase-splitter
  247. question about Bruce's GGP preamp
  248. Rickenbacher amp HELP!!!
  249. interpreting max. values listed in datasheet
  250. zenith mlt 15 console record player problem

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