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  1. Which tube for OPT 7,5k SE low watts???
  2. help me with this puzzle...
  3. It makes me wonder ...
  4. Tubes operating in horizontal position
  5. Dewald radio N-803b keep or use parts?
  6. Ongaku
  7. PSU Design question
  8. Primary reactance of a parafeed OPT
  9. Info on IIT interstage trafos?
  10. vt25/10-Y or 45 tube
  11. 2a3, single plate-double plate?
  12. Preferred tube? KT88 vs. EL34
  13. You may laugh..but don't waste your time trying to dissuade me. 300B preamp.
  14. Parallelling power supply chokes???
  15. Sherwood S7000
  16. please explain plate curves
  17. Triode connected SV6550C with 500V HT
  18. KT88 SE schematic wanted.
  19. 6SN7 based tube buffer
  20. hum measurement
  21. Load of tubes to liquidate
  22. Unhappy with the Lilliput design
  23. Halving OPT's pri.imp. by connecting 8ohm load to 16ohm tap - Good/Bad?
  24. Tube Technology Prophet
  25. Cathode Feedback from Secondary for PP Amp
  26. Zenith Amplifier
  27. Dynaco SCA-35 fixer-upper
  28. Multiple primary power transformer question
  29. Sizing a Regulator
  30. will laziness burn my amp down?!
  31. resistors of a lower power rating
  32. wavy vibrato-like sound when amp cranked
  33. Rh34se?
  34. Ef86, 6n1p & 845pp
  35. HYBRID POWER AMPLIFIER - please help!
  36. 6528 Se
  37. single ended HiFi Regal stereo tube amplifier
  38. Matisse Line Amp
  39. changing longtail
  40. What do you think??????
  41. The amplifier itself whines
  42. DIY repair- replacing capacitors
  43. Benefits of 845B
  44. Counterpoint Preamp Modifications
  45. Humming Sovtek EF86
  46. Output Transformers
  47. RIAA phono stage
  48. The cathode FeedBack in Push-Pull amp
  49. What's a Field Coil Amplifier?
  50. HF filter inductors for signal path
  51. Different tube options for DCMB driver stage?
  52. Crowhurst paper on output xformer search
  53. Tamura inputs trans used as linestage out
  54. Seperate Amp for center channel
  55. Look for UL41 PP Structure!!
  56. Photoelectric valves?
  57. Bell Carrillon tube amp 6V6
  58. Yamamoto Sound Craft A-08 Amplifier
  59. Wanted Radford MA-15
  60. Beyond SET and ParaFeed.... Complementary Current Triode
  61. Too much gain
  62. 2 To 3 Prong Conversion
  63. 6c33 Set
  64. Svetlana MVSZ ---> cheat??
  65. separation of phono power supply for marantz m7 clone
  66. 300b Circuit Mod.
  67. james transformers
  68. ecc preamp schematics please!!!
  69. 845B problem
  70. 150W Garage sale find.
  71. speakers for class A ?
  72. Power Tx core should ground?
  73. First try, Would some one look over.
  74. Global Feedback in Push Pull Amps
  75. Heater voltage circuit change......why please
  76. EICO 147A operators manual
  77. Please Help My Tube Microphones!
  78. Magnetic Circuit Gurus Needed
  79. Tube Blues
  80. end of tube
  81. What is meant by 'Extended Cut-off'?
  82. How is it possible?
  83. best long life for my tube
  84. My first tube amp design...check it out.
  85. Tube driver for a SS power amplifier
  86. HK & world: with Cayin, are tube kits still good value (apart from learning)?
  87. www.thetubecenter.com = reliable?
  88. what do I replace...?
  89. Rectifiers: Tube vs Solid state..
  90. What can I do with 3Q4 Pentode tubes?
  91. DIY Powdered Core Progress Report
  92. PP output transformer grounded or not ?
  93. Bias supply question
  94. Minimum filament voltage for 300B
  95. Is it ok to combine output transformers?
  96. JE labs 2A3 evaluation
  97. 6sn7,6h30,6c33c ?
  98. signal ground and earth ground
  99. Recommended 6SN7 and 6SL7
  100. Question about BAT VK 75
  101. Please,a) cause of high pitched hum, b)DC wires twisted or not
  102. What kind of tube is this
  103. Tube Identification Help Please
  104. Balanced Load Design
  105. "lift off " or "Houston we have a problem"
  106. Anyone wound SE transformer for 6c33c-b?
  107. EL802 driving a 845 ?
  108. Diodes in series and hybrids
  109. Vacuum tube modeling software - beta testers wanted
  110. Parallel Push Pull Drivers
  111. 6V6 in triode connect mode
  112. OPT winding orientation
  113. 6.3v Heater Regulator Schematic
  114. An Important Read
  115. Did a real nice find
  116. New guy with DIY ground ?s--yes, even after searching:D
  117. 5u4g vs 5u4gb
  118. Tube amp volume fluctuation
  119. Bad tube?
  120. 1626's watt?
  121. fellow Hawkeye lookin' for cadman!
  122. Shuagang 2A3C
  123. Parallel SE vs. Single SE Output Question
  124. PP OPT Core dimension
  125. Confirmation of Primary Impedance?
  126. What does a hole on the guide pin of an octal base represent?
  127. Sepp?
  128. 6AS7 lowpower amp?
  129. Dual Mono PSU with shared earth..
  130. Breadboard 6C33C-B S.E.T
  131. audionote schematic wanted !!
  132. DIY Extreme performance Output Transformers - AMSOL
  133. Dressing up Ampex 2012 tube amps
  134. About McIntosh C22 power transformer
  135. it is almost alive
  136. Ef86, 6H30PI and 2 EL34
  137. 7868 tubes in Bogen CHB100
  138. DIY Powdered Iron Tranny Core
  139. Which BG cap best suited for cathode bypass?
  140. Oscillation question- pre or power?
  141. changing (de)coupling cap values
  142. opamp driving tubes
  143. tube 833a
  144. My latest Project (nightmare)
  145. output transformer primary imp. calculation
  146. rogers cadet mk3 hummm.....
  147. Someone help: SE shematic with GK71?
  148. Calling Graham Ingle of black cat electronics
  149. Old Emerson Tube Radio... great find!
  150. E810F in triode
  151. GZ37 replacement?
  152. Bias adjustment question
  153. 6W Self Inverting 6BQ5 Amp
  154. Inductance a problem with wirewound pots?
  155. Fun circuit with a 12ax7 (ecc83)
  156. want to do PP-GM70
  157. spraying the guts of my amp...
  158. How to drop 10v from mains for 300b amp.
  159. SE Output Primary Impedence
  160. Different input valves for KT88
  161. EL84/6BQ5 LUXMAN Amps
  162. Heresy? Replacing tube rectifier w/Weber Copper Cap
  163. Direct Coupled Choke-assisted Mu-stage
  164. Another 845 SE
  165. Is it possible - 6922 Active X-over running with ~ +/- 40V ?
  166. 12FQ8's ?
  167. my first tube site
  168. different measurements
  169. DIY Dyna MK 2's and using bottlehead C4S
  170. Elektor ECL86 RIAA Preamp
  171. ECC88 - upgrading from Teonex - Help ?
  172. B+ problem?
  173. Realistic SAF 24c - Need some help
  174. what is the cap
  175. EAR 509 Mkii manual
  176. Where do you draw the line between tube and sand?
  177. Shinrock transformers
  178. OT: Anybody having problems getting to AA ? nt
  179. how much above B+ will voltage swing in OPT?
  180. bias meter and pot lead length
  181. 211 biasing voltages preferances
  182. Definitely NOT a Loftin-White!!
  183. Val MP 211 info wanted
  184. Look for EL33 PP structure circuit
  185. Rodding Bogen CHB-10A Mono Blocks
  186. two value tube amps for active DIY horns
  187. GEC 912+
  188. soon available as wrist watch.....
  189. Low sensitivity speakers and valvs, no nfb?
  190. Has anyone built this amp?
  191. Difference bewteen ultralinear & triode mode?
  192. 7586 nuvistor
  193. Valve Identification-Help
  194. KT 88 schematic search
  195. Bias the new power tube
  196. 6M6G Structure of the circuit
  197. I Think I Saw Heaven !
  198. Tron Syren
  199. extremely low output
  200. project suggestion with spare trans
  201. cinema amps
  202. c3g producing sparks
  203. Where to get transformer parts?
  204. penta labs
  205. Dynaco ST70 clone
  206. anyone tried the diy paradise simple el84 pp
  207. compression?
  208. 100V trannies as valve OPT
  209. 6bm8 / Ecl82 Pse & Srpp
  210. Lowther LL26 restoration
  211. Can I trust my Valve Tester
  212. (RCA) 6SN7 GTC spec?
  213. re: need help on Counterpoint SA5.1 preamp
  214. Why no CCS in PP output stage?
  215. 811-A amp
  216. DYNACO 120W AMP for DYNA A-451
  217. 35watts el34 amp schematic search ?
  218. tube
  219. My first design. PSE 211 to review.
  220. new 832 tubes?
  221. How to test a tube
  222. 50V line trafos for tube O/P?
  223. Distortion analysis mu follower
  224. the general radio experimenter
  225. resistor value, please
  226. PL519 PP design
  227. Dealers for output irons in EU wanted
  228. Any Twin Power triode Noval type?
  229. ARC SP9 Preamp voltages
  230. Power transformer
  231. OTL for Raven R2
  232. passive preamp (autoformer)
  233. How fragile are Sylvania 10Y tubes?
  234. SE 6SN7/813 direct coupling
  235. Riken Ohm Vs Kiwame
  236. Advantage of Valve Preamp?
  237. SiC Schottky rectifiers.
  238. 30 W from 6c33b?
  239. Built-in bleeder in ASC?
  240. 833 and GU-48
  241. Safety with high volts: 101
  242. Kofi Annan in: "B+... PLUS!!!"
  243. searching for darling tubes.
  244. Audio Research LS8 scheme
  245. My new pp KT88 design
  246. Tubepreamp and Zappulse?
  247. Comments on Transcendent Sound products
  248. regaring 833se
  249. Asc Oil Capacitors
  250. Buy Tubes

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