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  1. A tubeNoob enters => I bought a Dynavox VR-70E
  2. plugging guitar amp to phono reciever
  3. Heater Supply using LM3X7 current source
  4. Stepdown input trafo
  5. increasing the bias will cause the amp to.....
  6. Transformer faulty?
  7. More crappy Russian EL34s - Svetlana this time
  8. My Tragic story about Emission Labs tube
  9. Please help me solve the problem
  10. amp freq response with o-scope
  11. Can you SEE (construction) how a tube SOUNDS?
  12. CCS fed shunt regulators
  13. Recommended Modifications/Tweaks for Dynaco PAS-3 Series II Pre-Amp
  14. ebay toys
  15. Source for 6c45pi's???
  16. phono preamp design for c3m postie valve
  17. McMartin MA-50 Troubleshooting
  18. looking for something different
  19. mc275
  20. Sv572-3 Se
  21. Alps step attenuator
  22. seeking real kt90 pp schematics
  23. -50V negative supply
  24. Inductance coupling between chokes
  25. Mercury Magnetics
  26. warming up thetubes
  27. distorsion
  28. using a plate choke?
  29. Should I trash these tubes
  30. Minature Vaccum Tube Question
  31. 46 tube user
  32. Smells like a mistake
  33. Help for my hybird zero feedback AMP
  34. help on ul transformer please
  35. Wiring the D3a as triode - What is best?
  36. Switching from ultralinear to triode
  37. Help for a Output Transfo problem
  38. Pentode models
  39. Good or bad to use parallel capacitors of same value in signal path...
  40. Urgent: Need Help on Schematics (Tube Pre-Amplifier)
  41. ASL wave 8 mods
  42. lectron jh 60 help----------------
  43. crown tube poweramp
  44. Alan kimmel mu stage article
  45. What would you do with this amp?
  46. tube software
  47. Simple Valve Preamplifier
  48. Current sourced heaters in a CF
  49. Tubes and music styles
  50. Cheap SE EL84
  51. Making a living out of tubes? (A little off-topic)
  52. EL84 matched pairs
  53. Tango XE20S voltage rating?
  54. power transformer heat
  55. Used Tube Amps, second life..
  56. Tubes
  57. Taylor 845
  58. AVO CT-160 Tube Tester - how to remove knobs?? - please help
  59. The DIYHifiSupply.com Joplin amplifier Kit
  60. Berning P-1 Preamp
  61. Which tube for OPT 7,5k SE low watts???
  62. help me with this puzzle...
  63. Univox 1501 Fried Resistors
  64. It makes me wonder ...
  65. Tubes operating in horizontal position
  66. Dewald radio N-803b keep or use parts?
  67. Ongaku
  68. PSU Design question
  69. Primary reactance of a parafeed OPT
  70. Info on IIT interstage trafos?
  71. vt25/10-Y or 45 tube
  72. 2a3, single plate-double plate?
  73. Preferred tube? KT88 vs. EL34
  74. You may laugh..but don't waste your time trying to dissuade me. 300B preamp.
  75. Parallelling power supply chokes???
  76. Sherwood S7000
  77. please explain plate curves
  78. Triode connected SV6550C with 500V HT
  79. KT88 SE schematic wanted.
  80. 6SN7 based tube buffer
  81. hum measurement
  82. Load of tubes to liquidate
  83. Unhappy with the Lilliput design
  84. Halving OPT's pri.imp. by connecting 8ohm load to 16ohm tap - Good/Bad?
  85. Tube Technology Prophet
  86. Cathode Feedback from Secondary for PP Amp
  87. Zenith Amplifier
  88. Dynaco SCA-35 fixer-upper
  89. Multiple primary power transformer question
  90. Sizing a Regulator
  91. will laziness burn my amp down?!
  92. resistors of a lower power rating
  93. wavy vibrato-like sound when amp cranked
  94. Rh34se?
  95. Ef86, 6n1p & 845pp
  96. HYBRID POWER AMPLIFIER - please help!
  97. 6528 Se
  98. single ended HiFi Regal stereo tube amplifier
  99. Matisse Line Amp
  100. changing longtail
  101. What do you think??????
  102. The amplifier itself whines
  103. DIY repair- replacing capacitors
  104. Benefits of 845B
  105. Counterpoint Preamp Modifications
  106. Humming Sovtek EF86
  107. Output Transformers
  108. RIAA phono stage
  109. The cathode FeedBack in Push-Pull amp
  110. What's a Field Coil Amplifier?
  111. Need help for ampeg tube amp transformers ...
  112. HF filter inductors for signal path
  113. Different tube options for DCMB driver stage?
  114. Crowhurst paper on output xformer search
  115. Tamura inputs trans used as linestage out
  116. Seperate Amp for center channel
  117. Look for UL41 PP Structure!!
  118. Photoelectric valves?
  119. Bell Carrillon tube amp 6V6
  120. Yamamoto Sound Craft A-08 Amplifier
  121. Wanted Radford MA-15
  122. Beyond SET and ParaFeed.... Complementary Current Triode
  123. Too much gain
  124. 2 To 3 Prong Conversion
  125. 6c33 Set
  126. Svetlana MVSZ ---> cheat??
  127. separation of phono power supply for marantz m7 clone
  128. 300b Circuit Mod.
  129. james transformers
  130. ecc preamp schematics please!!!
  131. 845B problem
  132. 150W Garage sale find.
  133. speakers for class A ?
  134. Power Tx core should ground?
  135. First try, Would some one look over.
  136. Global Feedback in Push Pull Amps
  137. Heater voltage circuit change......why please
  138. EICO 147A operators manual
  139. Please Help My Tube Microphones!
  140. Magnetic Circuit Gurus Needed
  141. Tube Blues
  142. end of tube
  143. What is meant by 'Extended Cut-off'?
  144. How is it possible?
  145. best long life for my tube
  146. My first tube amp design...check it out.
  147. Tube driver for a SS power amplifier
  148. HK & world: with Cayin, are tube kits still good value (apart from learning)?
  149. www.thetubecenter.com = reliable?
  150. Lp values for guitar amp OT
  151. what do I replace...?
  152. Rectifiers: Tube vs Solid state..
  153. What can I do with 3Q4 Pentode tubes?
  154. DIY Powdered Core Progress Report
  155. PP output transformer grounded or not ?
  156. Bias supply question
  157. Minimum filament voltage for 300B
  158. Is it ok to combine output transformers?
  159. JE labs 2A3 evaluation
  160. 6sn7,6h30,6c33c ?
  161. signal ground and earth ground
  162. Recommended 6SN7 and 6SL7
  163. Question about BAT VK 75
  164. Please,a) cause of high pitched hum, b)DC wires twisted or not
  165. What kind of tube is this
  166. Tube Identification Help Please
  167. Balanced Load Design
  168. "lift off " or "Houston we have a problem"
  169. Anyone wound SE transformer for 6c33c-b?
  170. EL802 driving a 845 ?
  171. Diodes in series and hybrids
  172. Vacuum tube modeling software - beta testers wanted
  173. Parallel Push Pull Drivers
  174. 6V6 in triode connect mode
  175. OPT winding orientation
  176. 6.3v Heater Regulator Schematic
  177. An Important Read
  178. Did a real nice find
  179. New guy with DIY ground ?s--yes, even after searching:D
  180. 5u4g vs 5u4gb
  181. Tube amp volume fluctuation
  182. Bad tube?
  183. 1626's watt?
  184. fellow Hawkeye lookin' for cadman!
  185. Shuagang 2A3C
  186. Parallel SE vs. Single SE Output Question
  187. PP OPT Core dimension
  188. Confirmation of Primary Impedance?
  189. What does a hole on the guide pin of an octal base represent?
  190. Sepp?
  191. 6AS7 lowpower amp?
  192. Dual Mono PSU with shared earth..
  193. Breadboard 6C33C-B S.E.T
  194. audionote schematic wanted !!
  195. DIY Extreme performance Output Transformers - AMSOL
  196. Dressing up Ampex 2012 tube amps
  197. About McIntosh C22 power transformer
  198. it is almost alive
  199. Ef86, 6H30PI and 2 EL34
  200. 7868 tubes in Bogen CHB100
  201. DIY Powdered Iron Tranny Core
  202. Which BG cap best suited for cathode bypass?
  203. Oscillation question- pre or power?
  204. changing (de)coupling cap values
  205. opamp driving tubes
  206. tube 833a
  207. My latest Project (nightmare)
  208. output transformer primary imp. calculation
  209. rogers cadet mk3 hummm.....
  210. Someone help: SE shematic with GK71?
  211. Calling Graham Ingle of black cat electronics
  212. Old Emerson Tube Radio... great find!
  213. Fender princeton/champ clone
  214. E810F in triode
  215. GZ37 replacement?
  216. Bias adjustment question
  217. 6W Self Inverting 6BQ5 Amp
  218. Inductance a problem with wirewound pots?
  219. Fun circuit with a 12ax7 (ecc83)
  220. want to do PP-GM70
  221. spraying the guts of my amp...
  222. How to drop 10v from mains for 300b amp.
  223. SE Output Primary Impedence
  224. Different input valves for KT88
  225. EL84/6BQ5 LUXMAN Amps
  226. Heresy? Replacing tube rectifier w/Weber Copper Cap
  227. Direct Coupled Choke-assisted Mu-stage
  228. Another 845 SE
  229. Is it possible - 6922 Active X-over running with ~ +/- 40V ?
  230. 12FQ8's ?
  231. my first tube site
  232. different measurements
  233. DIY Dyna MK 2's and using bottlehead C4S
  234. Elektor ECL86 RIAA Preamp
  235. ECC88 - upgrading from Teonex - Help ?
  236. B+ problem?
  237. Realistic SAF 24c - Need some help
  238. what is the cap
  239. EAR 509 Mkii manual
  240. Where do you draw the line between tube and sand?
  241. Shinrock transformers
  242. OT: Anybody having problems getting to AA ? nt
  243. how much above B+ will voltage swing in OPT?
  244. bias meter and pot lead length
  245. 211 biasing voltages preferances
  246. Definitely NOT a Loftin-White!!
  247. Val MP 211 info wanted
  248. Look for EL33 PP structure circuit
  249. Rodding Bogen CHB-10A Mono Blocks
  250. two value tube amps for active DIY horns

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