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  1. Help with bogen CH8
  2. where do you get those schematics / layouts?
  3. Spice 3f4 model of a low voltage direct heated signal level pentode
  4. ECC82
  5. Major diff between 12AX7 and 12AU7
  6. Voltage doubler question
  7. el34 instead of 6550
  8. Bogen CH8
  9. Ah Njoe Tjoeb 4000 problem
  10. my last project
  11. TIP50 voltage regulator
  12. Collets for 212 pins
  13. K-12M Enclosure + Upgrades. Finished!
  14. Will this work?
  15. Big tube - what is it?
  16. Help! no signal! Marshall JTM60
  17. PSU topology & regulator
  18. Dynaco from scratch
  19. 6HV5A Single Ended Amp
  20. Cheap but not too much !
  21. Quick Output Transformer Question
  22. Help with guitar tube amp mods
  23. strange thing with AMC 2030
  24. GE6072 replacement tube
  25. Counterpoint 5.1 preamp
  26. Tube library
  27. RIAA recording on CD
  28. Old SE transformer measuring?
  29. Speakers for tube amps...
  30. MF x10v3
  31. Free Tube Books.....
  32. A Transformer question
  33. 6v6 PP - No sound
  34. help with interstage needed
  35. Hum in Speakers
  36. Just another PP...
  37. Leak Stereo 20 questions
  38. 10M45 CCS, what am I doing wrong ?
  39. Various transformers
  40. tubes sound
  41. Power supply help!
  42. KR Tubes
  43. Bi-amp Between Tube, and SS
  44. 2 Tube questions,
  45. my biggest project ever , need lotsa help plz
  46. tube temperatures
  47. hh scott bias issues
  48. B+ required w/ ccs load
  49. Info re Soundtech powerone tube amp
  50. Verdier Regulated Power Supply
  51. 6DJ8/ECC88 mu-follower
  52. Tube Compressor
  53. Newbie PSU question
  54. Hickok Cardmatic tube tester cards
  55. Hashimoto SE Output Transformer
  56. Ripple and chokes
  57. Tubes driven by BJT's
  58. Red LED substitution questions
  59. Hytron big 71A
  60. Need some help for 6L6 amp
  61. 802 as an audio output tube
  62. Changing 6DJ8 SRPP stage gain
  63. Cooling In Cab / Minimum Vent Area?
  64. Tube voltage help
  65. MF XPre troubleshooting
  66. Giaime's Preamp Finished!!!
  67. Circuit and PCB Layout comments
  68. 4613 triode
  69. Help with inverter CCS+NFB
  70. Question about KT 88 integrated
  71. The Trials, and Tribulations of Bias
  72. Which components should be matched?
  73. Using PP output for SE?
  74. Tube Newbee Needing Guidance
  75. 12A/71A SET project
  76. 805 SE amplifier
  77. Playing with screen resistors
  78. Interpret this 12ax7 feedback loop
  79. Low voltage-drop CCS for LTP input stage?
  80. Tube Socket Mounting - rigid or floating
  81. SE-9 mod help please
  82. 2a3SE
  83. 20 Watt SE. I had found it.
  84. Ok to exceed Vg2 in triode? (Yes)
  85. Fender Adjustments
  86. Help needed in Bloomington IN
  87. % error for primary resistance
  88. Help Understanding Circuit (grounded grid I/V)
  89. Testing a 70.7v transformer
  90. thyratron?
  91. Tube frontend....
  92. Transformer and Choke Grounding?
  93. El509 Pse
  94. 6550 Safety Question
  95. Jadis Defy 7 : Manual
  96. Melos Ma-111b
  97. Old audio amp change
  98. Need 45 tubes
  99. Jadis Defy 7 : Manual ??
  100. Help for pre-amp and two single-ended finals
  101. Schematic needed:MFA Magus B
  102. Can I remove the input caps?
  103. 807 vs. 1624 tetrode ?
  104. how to make tube amp sound layback and mellow?
  105. Standard tube filament voltages and currents
  106. SE 20W. What tube?
  107. 5687 Linestage behaving odd...
  108. SMPS & tube pre-amp development board.
  109. Question about Melody KT88 amp
  110. Trafomatic Transformer
  111. Diode trick?
  112. Return of the vacuum tube sonic hologram generator
  113. 6V6 ->EL84 with 12AT7?
  114. design for 6336A OTL amp needed
  115. Aikido sound?
  116. Valve preamp
  117. GAS VR Tubes on B+
  118. Measuring Triode-Connected Pentode Curves
  119. 6L6, 12L6 not same tube!
  120. equivilent part numbers for 6K35HF
  121. Is this a start or run cap
  122. 6V6 PP under construction - pics
  123. Is this practical
  124. Idea for a 2 tube 6080 PP amp.
  125. pls tell where to buy core of transformer
  126. 300B amp PS optimization?
  127. Different value for .47uf coupling cap
  128. Old Olympic audio tube amp
  129. What Design to Use?
  130. KT90's anyone using'em ?
  131. What are they?
  132. Replace el34 with 6p3s
  133. Advice on 6V6 push pull Parallel
  134. squealing output transformer
  135. Melos Sha Gold
  136. Ways to Lower B+ in a Tube Rectifed PS
  137. Oregon Electronics D6 HV supplies: info needed please
  138. My version of the Vacuum State FVP5
  139. Diy Tube Phono Preamp
  140. double check the math
  141. Kitparts line stage
  142. Aikido tube heater floating
  143. Cathode and other types of feedback
  144. Tube God TH-1 Amp Regulator PCB ????
  145. step-up travel transformer for small preamp?
  146. Help a total tube amp newbie find a super simple design...
  147. heretical unity gain and ccs question
  148. Vox tubes glowing red hot
  149. What To Do
  150. Parallel Two Tubes
  151. 4 x PSE EL34
  152. EL34 CCS help
  153. Tube curve tracer project
  154. Single Ended EL-34?
  155. maxi tube tester?
  156. Zener Bias
  157. Looking to build a tube amp.
  158. Tube humming question
  159. YAPPAP (Yet Another Push-Pull Amplifier Project)
  160. voltage output dac ==> TUBE
  161. Heater switch transistor
  162. Anything post power transformer that can cause it to hum / buzz?
  163. Aikido enclosure
  164. Power Transformers. Decisions
  165. First tube after IV
  166. Suggestions for Upgrade - VDV70/100
  167. New Hybrid Output Stage and booster for SE Amp
  168. Pro and cons high DCR filter choke
  169. do-it yourself leslie help
  170. John Broskie Aikido boards
  171. Making a muscular triode monoblock amplifier using P-P Eimac 450TH's
  172. Limited run PCBs - where's copyright???
  173. Hammond Amp Question
  174. Impedance matching
  175. 6111 output for CD player - opinions - some help?
  176. Sensitivity Limiter - Bogen Mx-30a
  177. Are my speakers efficient enough for tubes?
  178. Ping Sy: LED for Cathode Bias
  179. PSU capacitors/electrolytics
  180. 2A3 monoblock power supply
  181. 2 tube questions
  182. Just acquired HEATHKIT W4-AM-*picture*
  183. Passive line stage with tubes
  184. My favorite preamp
  185. Again, a preamp tube choice.
  186. Class Double A
  187. Two Stereo Tube Amps Into Monoblocks
  188. Multi-purpose tube amp (line and guitar inputs)
  189. Espey AM/FM radio (pentagrid mixer, etc.)
  190. Need help for DIY EL34PP tube amp
  191. Higher value oil capacitors?
  192. Transconductance.
  193. 5763 tetrode on OTL ?
  194. cornford harlequin
  195. Need help: 5687 tubes and heat dissipation
  196. Tube preamp, tone control problem
  197. Use 5KV transformer as output transformer?
  198. Any EL84 alternatives?
  199. help on id of tubes
  200. Sovtek 6CA7-EH Producing smoke...
  201. building V4's and phono pre
  202. pre out on a integrated tube amp?
  203. 6SN7 some good some bad
  204. Phono pre amp - thanks SY
  205. 6c33c Tube preamp
  206. Tubes for Lumley ST40 power amplifier?
  207. Plate supply of Conrad Johnson PV-5 ?
  208. 6CD6GA in Enhanced Triode Mode for SE Amp
  209. Fender 6G15 clone
  210. Gridstoppers against RF, a necessity ?
  211. where do I.E.T. tubes come from
  212. I wanna DIY a PP 6550 Guitar Setup
  213. Hum 300b Again
  214. Pse El34
  215. Mcintosh MR65 Tube Tuner
  216. Problem: Really Bright glowing 6CA7
  217. New member introduction & question
  218. The "PowerTotem"... a new way to SET?
  219. Please advice on KT88 Push Pull
  220. console "guitar amp" part 2
  221. Odd's n Ends Revisited 6V6 SE amp
  222. Bottlehead Foreplay with chipamp
  223. Next Amp: 2a3PSE, 300B or KT88SE UL
  224. transformer list
  225. do 300b amps really sound any good?
  226. Capacitance For Mono Block Design
  227. pilot 264
  228. Octal equivalents for 6C45?
  229. lm3875 chipamp and tube pre loud buzzing
  230. Using a spdt switch to select between triode mode and pentode mode on a guitar amp.
  231. 32 ohm bass amp.
  232. PSE UL EL84 or 6V6 or EL34?
  233. Paraphase Splitter - why is it unpopular?
  234. Tubed IR spectrophotometer
  235. Very Basic 12AX7 Heater Question
  236. 6072A/12AY7 for an AKG C12 Microphone
  237. SET Suggestions
  238. Will ccs work with a DHT?
  239. Resistor type and power rating
  240. tube patents
  241. Why use E182CC?
  242. tube
  243. understanding transformer codes
  244. Maida regulator, these results expected?
  245. Moto chassis pulled! pics!
  246. glasshouse kit amps. Any good?
  247. class B
  248. a.r.t. mpa tube pre amp
  249. Upper and lower triode in E88CC
  250. Booster Amps

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