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  1. 50C5 pentode LTSpice model
  2. "Iron Garter" Push-Pull Amplifier
  3. Mcintosh Mc-3500 sound
  4. parafeed - Gyrator vs CCS anode load
  5. Compactron amp... LIVES!
  6. Opinions Please
  7. Aikido REV D pcb
  8. New Edcor opt, what would a 150ohm primary be used for?
  9. GM-70, A2, biamping
  10. Espressivo Headphone Amplifier on Budget
  11. Coupling Caps for Aikido ACF Buffer
  12. How to compute current at control grid of power tube?
  13. Back on the forum after a long hiatus 6SN7 Preamp project in the works.
  14. Look for Single Tube scheme
  15. Cathode follower amplifier, push-pull, xformer-coupled
  16. help with "bruce heran" el84 amp S2
  17. Triodes and current flow
  18. Driver Tubes: Help Me Decide
  19. Possible tweak
  20. DHT Driving Pentode Output Stage Question
  21. 50C5=50l6; 12av6=12at6
  22. Any experience to drive 805 tube?
  23. Fixed short in a 45
  24. power amp current
  25. Phase inverter/power section
  26. Concerned with current dual 5U4's...
  27. What tube is this?
  28. Signal tube noise!
  29. McIntosh Goodness From Scratch
  30. Fisher Output Transformer ID
  31. Stepped Attenuator for Air Tight ATC-1
  32. The Tube Killer Killer?
  33. Martel FAX-200C
  34. 6n6p headphone amp
  35. Ouput voltage of a triode stage on quiescent state should be zero?
  36. Hum Ho
  37. build a OTL (output-transformerless) amplifier
  38. 6v6 PP maggie with Polk SDA 1C
  39. Stromberg-Carlson AU-32 distortion in preamp
  40. Please Help - LF Peaks/Dips & Clipping
  41. Anybody watching this?
  42. Trying to find an unusual schematic posted here this Spring
  43. If you were going to build a OTL?
  44. EL34 PP PROJECT
  45. Matching tubes for PP
  46. Calculate triode strapped characteristics from pentode data?
  47. 6922 Loading Question
  48. corrections for LF and HF peaking
  49. 300bSE journey under way
  50. Why shielded tubes
  51. Aikido LV 6N27P SMPS completed
  52. Back at the 45 SET
  53. Time to replace my 50 year old filter caps...
  54. Amazingly low distortion -- Radford-based design
  55. To ground or not to ground the OPT secondary, that is the question
  56. Ultralinear Observations and Questions
  57. 6SN7 v 6N8P v 6H8C
  58. NOS radio parts awaiting for my pick up!
  59. Toroidal Transformer Cover
  60. VTV 6sn7 line stage project
  61. can something be made using these tubes
  62. geloso 3270 power amplifier
  63. Belton micalex tube sockets any experience ?
  64. DeathTrap 500 - An Engineer's approach to the 300B SET
  65. My First Power Supply
  66. 5aR4 Rectifier Problem, Help! Little Long
  67. Size of 5Y3 tubes?
  68. 3C24 really is a fine output tube...
  69. Yaqin MC100B Newbie Questions
  70. JE simple 45 SE grid leak resistor question
  71. 26 vs 27
  72. Bypass the tone control
  73. CCS with VN2222L
  74. European Made 6080/6AS7
  75. PFL200, what can I use them to?
  76. 7W7 tube - how it competes with other pentodes as driver?
  77. 1959 Blaupunkt receiver capacitors -Newbie
  78. i have one 5672 tube (new)
  79. 12ax7 pre amp + solid state power amp
  80. Preamp for Tim Mellow's 6C33C OTL
  81. Power supply buzz
  82. Circuit query
  83. 845/211 driver circuits
  84. A question about the Malanz 7
  85. Looking for four KT90 Ei
  86. Dynaco PAS transformer breakdown
  87. 5670 Thoughts?
  88. looking to build or buy a cheep preamp
  89. Trying to achieve 25-30 watts... help please!
  90. RCA Reel to Reel Conversion??
  91. AA5 Tube Radio Design using 2010 Techniques
  92. I found a use for surplus tubes
  93. Edcor CXPP-30-MS-3.8K OPT
  94. Which tube does my amp use? 845 or 211
  95. Coupling cap replacement in series?
  96. electronique practique
  97. New PNP HV tranny for anode CCS
  98. tube reliability
  99. Hybrid dreams
  100. Triode Electronics 30W SE Transformer
  101. Small Size Output Transformers
  102. headphone amp with 7025?
  103. Separation of preamp and power amp
  104. Aikido 9pin with 6n1p and 6n6p as Headphone
  105. PreAmp output transformers
  106. Line-out on tubes
  107. Would this scheme work ?
  108. differential cascode patented in 2007
  109. Question about AMP185 Rectifier Circuit
  110. correct heater wiring
  111. Speaker snap or crack (no pop)
  112. Very long cables
  113. Help! 2A3 SET quit after hot restart
  114. INTEGRATED HYBRID AMP WITH NO LOAD
  115. 12AX7 preamp on 375V
  116. The Blue Velvet Line Preamp with 7193 instead of 6SN7
  117. Increase idle current on my KT77's?
  118. Yet another nutty idea - don't say I didn't warn
  119. need someone to run a sim in PSUD2...my PC is down and my MAC wont runt the program!!
  120. Building an B-15-inspired amp
  121. China preamp Xiang Sheng 768A
  122. RE: Fisher 200 tube amp fuse blowing issue
  123. How do you match output tubes?
  124. Best Dyna ST-70 rebuild kit?
  125. Help with tube wiring
  126. st70 problem
  127. Help with info on old valve amp
  128. Exceeding V-heater-cathode
  129. Cayin/Sparks A- 50T schematic.
  130. Looking for Bi siemens datasheet
  131. Transformers, transformers, transformers...
  132. Need ideas for my 6V6 from 1946 Blues / rockabilly
  133. Quasi complimentary output stage?
  134. 4ohm output transformer with 8ohm speaker
  135. First DIY project for a good power Amplifier
  136. Cherry red plates
  137. DIY triode
  138. First post/build
  139. New Transformer Vendor In Belgium
  140. KT88 grid stopper
  141. Connecting valve shields to earth
  142. Shindo MAZERIS BELLEVUS MODEL 454-2xAttenuator-How works this Circuit? 6067+12BH7
  143. Fixed bias failure B+ switch off protection
  144. Uses for Quicksilver Transformers
  145. SE amp problem
  146. EL-34 to 6P3S-E
  147. 6922 sepp with Balanced Gains
  148. tubes for these OPT?, pri 1.75Kohm, sec 2.5, 4, 8ohm, taps 20%, weight 4Kg
  149. Turning a 6.3 V secondary into a 5 V secondary on an Antek 2T350
  150. gridchokes/output caps
  151. Can I build an MC30?
  152. Cathodyne: Can someone please help me fill in the blanks ?
  153. help hovland hp200
  154. 6SL7 and 6AS7 PP amplifier, design advice needed
  155. Project: Baldwin Tube Amp...
  156. Power Supply Input Capacitor - JE simple 45 question
  157. Tube output: Voltage or Current source?
  158. Edcor's new E-store website.....finally!
  159. Help complete the 300B schematic
  160. Confusion about a 5Y3GT rectifier
  161. Need advice on 300B circuit
  162. PCB in components
  163. new 6080 dc pp
  164. Single ended to balanced Aikido with mosfets in buffer position
  165. about 83 mercury rectifier
  166. Aikido Zo Calculation
  167. Pavane/ Psvane 845, 805, 211, 12AX7, 12AU7, 12AT7 and EL84
  168. Is this Telefunken fake or OEM?
  169. About Hmmmmm
  170. PRE-AMP PROJECT SRPP + HEADPHONE AMP
  171. 6BN11 vs 6CB6
  172. Is output stage local feedback necessary?
  173. Tube Longevity
  174. Power triode drive current requirements
  175. OPT Selection Question
  176. Recommend me a 6V6 P-P schematic
  177. Requesting advice on a pre-amp build. I'm working on asking realistic questions.
  178. 13e1 se "shade" some questions
  179. My first build VTA ST-120
  180. World Wide Audio, model: HBP-97a, Hybrid Power Amplifier - info needed
  181. DIY 50C5 mini amp...
  182. So you think you have cool tubes?????
  183. Layout
  184. Looking to ID this amp
  185. Help me to make tube amply
  186. CAT SL1 SIGNATURE schematik phono
  187. Have anyone built this 6V6 amp?
  188. GU-50 in Single-Ended Triode Configuration - What bias points?
  189. DC coupling on a LTP? Opinions and help needed on Fred's design.
  190. Power Selection - Help Needed
  191. Which speaker with a 1/4W tube amp?
  192. 6973 VS 6CZ5 substitute
  193. Third Reich tubes
  194. Hello...and another ST-70 project.
  195. Home theater magic smoke...smoked and I think I heard a mirror crack...
  196. Scott LK48-B restoration
  197. 3 - 12AU7 Preamp. Is there such an animal?
  198. 300b filament
  199. resistor 880 ohms cathode
  200. Anyone have a Bugle Boy logo
  201. Change of circuit from triode to tetrode
  202. Need upgrade info for my Atma-Sphere Novacron Amps
  203. JJ Kt77 Bias?
  204. tube rectified psu
  205. HELP!: my SET amp was turned off without a load and now it sound veiled!
  206. 5842 grid leak
  207. AMI Jukebox speaker impedence question
  208. Advice Needed: "Flabby" Amp Low-End
  209. Aikido transformer coupled output
  210. 12BH7A driver stage help
  211. Audio drive to g2 connected to g1 via 15K0
  212. KT88 SE Complete Kit
  213. Any high-end 6BM8 push pull tube amp schematic ?
  214. How a Triode Works
  215. EL3N substitute
  216. Magnavox AMP-185
  217. Best 6V6G that won't get me divorced..
  218. Shorted EL34 ?
  219. ARC VS60 hum in speaker
  220. Need help for a bias circuit
  221. Eico HF20 Output Txr Questions
  222. A Radford STA15 restoration story
  223. Tube Testing in DC Area
  224. Thorens PR24
  225. Newbie here with a couple questions
  226. 300B SwitchMode filament supply
  227. Mixed bias for balancing unmatched tubes in PPP?
  228. My First DIY Experience: An Aikido/Tetra Preamp
  229. how to test chokes for current and voltage
  230. pictures miniblok 1 and miniblok 2 by fred nachbaur
  231. Help with Aikido Preamp+class d amp
  232. will a PTX without center tap work?
  233. Anyone have information on 300B silvertone tube
  234. 6P14P push pull with low output
  235. passive 30Hz-20kHz Bandpass filter for tube preamp?
  236. My First Amp
  237. Frank's 6sn7 preamp
  238. My new 300B Amp
  239. help troubleshooting gradually distorting tube amp (dropping b+ voltage when hot)
  240. Tube Gear Supply/Surplus in Houston Area
  241. What 2a3 ?
  242. long tailed pair - need more gain
  243. how to bypass the volume pot on my SET amp?
  244. 2 stage AIKIDO
  245. Guys please help me with my Jolida 102B!
  246. Philbrick GAP/R K2-W question
  247. First time baby Huey amplifier build
  248. 6LB6's....
  249. Meng 6PI Biasing Question
  250. AIKIDO LV WON'T START

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