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  1. Tango XE20S voltage rating?
  2. power transformer heat
  3. Used Tube Amps, second life..
  4. Tubes
  5. Taylor 845
  6. AVO CT-160 Tube Tester - how to remove knobs?? - please help
  7. The DIYHifiSupply.com Joplin amplifier Kit
  8. Berning P-1 Preamp
  9. Which tube for OPT 7,5k SE low watts???
  10. help me with this puzzle...
  11. Univox 1501 Fried Resistors
  12. It makes me wonder ...
  13. Tubes operating in horizontal position
  14. Dewald radio N-803b keep or use parts?
  15. Ongaku
  16. PSU Design question
  17. Primary reactance of a parafeed OPT
  18. Info on IIT interstage trafos?
  19. vt25/10-Y or 45 tube
  20. 2a3, single plate-double plate?
  21. Preferred tube? KT88 vs. EL34
  22. You may laugh..but don't waste your time trying to dissuade me. 300B preamp.
  23. Parallelling power supply chokes???
  24. Sherwood S7000
  25. please explain plate curves
  26. Triode connected SV6550C with 500V HT
  27. KT88 SE schematic wanted.
  28. 6SN7 based tube buffer
  29. hum measurement
  30. Load of tubes to liquidate
  31. Unhappy with the Lilliput design
  32. Halving OPT's pri.imp. by connecting 8ohm load to 16ohm tap - Good/Bad?
  33. Tube Technology Prophet
  34. Cathode Feedback from Secondary for PP Amp
  35. Zenith Amplifier
  36. Dynaco SCA-35 fixer-upper
  37. Multiple primary power transformer question
  38. Sizing a Regulator
  39. will laziness burn my amp down?!
  40. resistors of a lower power rating
  41. wavy vibrato-like sound when amp cranked
  42. Rh34se?
  43. Ef86, 6n1p & 845pp
  44. HYBRID POWER AMPLIFIER - please help!
  45. 6528 Se
  46. single ended HiFi Regal stereo tube amplifier
  47. Matisse Line Amp
  48. changing longtail
  49. What do you think??????
  50. The amplifier itself whines
  51. DIY repair- replacing capacitors
  52. Benefits of 845B
  53. Counterpoint Preamp Modifications
  54. Humming Sovtek EF86
  55. Output Transformers
  56. RIAA phono stage
  57. The cathode FeedBack in Push-Pull amp
  58. What's a Field Coil Amplifier?
  59. Need help for ampeg tube amp transformers ...
  60. HF filter inductors for signal path
  61. Different tube options for DCMB driver stage?
  62. Crowhurst paper on output xformer search
  63. Tamura inputs trans used as linestage out
  64. Seperate Amp for center channel
  65. Look for UL41 PP Structure!!
  66. Photoelectric valves?
  67. Bell Carrillon tube amp 6V6
  68. Yamamoto Sound Craft A-08 Amplifier
  69. Wanted Radford MA-15
  70. Beyond SET and ParaFeed.... Complementary Current Triode
  71. Too much gain
  72. 2 To 3 Prong Conversion
  73. 6c33 Set
  74. Svetlana MVSZ ---> cheat??
  75. separation of phono power supply for marantz m7 clone
  76. 300b Circuit Mod.
  77. james transformers
  78. ecc preamp schematics please!!!
  79. 845B problem
  80. 150W Garage sale find.
  81. speakers for class A ?
  82. Power Tx core should ground?
  83. First try, Would some one look over.
  84. Global Feedback in Push Pull Amps
  85. Heater voltage circuit change......why please
  86. EICO 147A operators manual
  87. Please Help My Tube Microphones!
  88. Magnetic Circuit Gurus Needed
  89. Tube Blues
  90. end of tube
  91. What is meant by 'Extended Cut-off'?
  92. How is it possible?
  93. best long life for my tube
  94. My first tube amp design...check it out.
  95. Tube driver for a SS power amplifier
  96. HK & world: with Cayin, are tube kits still good value (apart from learning)?
  97. www.thetubecenter.com = reliable?
  98. Lp values for guitar amp OT
  99. what do I replace...?
  100. Rectifiers: Tube vs Solid state..
  101. What can I do with 3Q4 Pentode tubes?
  102. DIY Powdered Core Progress Report
  103. PP output transformer grounded or not ?
  104. Bias supply question
  105. Minimum filament voltage for 300B
  106. Is it ok to combine output transformers?
  107. JE labs 2A3 evaluation
  108. 6sn7,6h30,6c33c ?
  109. signal ground and earth ground
  110. Recommended 6SN7 and 6SL7
  111. Question about BAT VK 75
  112. Please,a) cause of high pitched hum, b)DC wires twisted or not
  113. What kind of tube is this
  114. Tube Identification Help Please
  115. Balanced Load Design
  116. "lift off " or "Houston we have a problem"
  117. Anyone wound SE transformer for 6c33c-b?
  118. EL802 driving a 845 ?
  119. Diodes in series and hybrids
  120. Vacuum tube modeling software - beta testers wanted
  121. Parallel Push Pull Drivers
  122. 6V6 in triode connect mode
  123. OPT winding orientation
  124. 6.3v Heater Regulator Schematic
  125. An Important Read
  126. Did a real nice find
  127. New guy with DIY ground ?s--yes, even after searching:D
  128. 5u4g vs 5u4gb
  129. Tube amp volume fluctuation
  130. Bad tube?
  131. 1626's watt?
  132. fellow Hawkeye lookin' for cadman!
  133. Shuagang 2A3C
  134. Parallel SE vs. Single SE Output Question
  135. PP OPT Core dimension
  136. Confirmation of Primary Impedance?
  137. What does a hole on the guide pin of an octal base represent?
  138. Sepp?
  139. 6AS7 lowpower amp?
  140. Dual Mono PSU with shared earth..
  141. Breadboard 6C33C-B S.E.T
  142. audionote schematic wanted !!
  143. DIY Extreme performance Output Transformers - AMSOL
  144. Dressing up Ampex 2012 tube amps
  145. About McIntosh C22 power transformer
  146. it is almost alive
  147. Ef86, 6H30PI and 2 EL34
  148. 7868 tubes in Bogen CHB100
  149. DIY Powdered Iron Tranny Core
  150. Which BG cap best suited for cathode bypass?
  151. Oscillation question- pre or power?
  152. changing (de)coupling cap values
  153. opamp driving tubes
  154. tube 833a
  155. My latest Project (nightmare)
  156. output transformer primary imp. calculation
  157. rogers cadet mk3 hummm.....
  158. Someone help: SE shematic with GK71?
  159. Calling Graham Ingle of black cat electronics
  160. Old Emerson Tube Radio... great find!
  161. Fender princeton/champ clone
  162. E810F in triode
  163. GZ37 replacement?
  164. Bias adjustment question
  165. 6W Self Inverting 6BQ5 Amp
  166. Inductance a problem with wirewound pots?
  167. Fun circuit with a 12ax7 (ecc83)
  168. want to do PP-GM70
  169. spraying the guts of my amp...
  170. How to drop 10v from mains for 300b amp.
  171. SE Output Primary Impedence
  172. Different input valves for KT88
  173. EL84/6BQ5 LUXMAN Amps
  174. Heresy? Replacing tube rectifier w/Weber Copper Cap
  175. Direct Coupled Choke-assisted Mu-stage
  176. Another 845 SE
  177. Is it possible - 6922 Active X-over running with ~ +/- 40V ?
  178. 12FQ8's ?
  179. my first tube site
  180. different measurements
  181. DIY Dyna MK 2's and using bottlehead C4S
  182. Elektor ECL86 RIAA Preamp
  183. ECC88 - upgrading from Teonex - Help ?
  184. B+ problem?
  185. Realistic SAF 24c - Need some help
  186. what is the cap
  187. EAR 509 Mkii manual
  188. Where do you draw the line between tube and sand?
  189. Shinrock transformers
  190. OT: Anybody having problems getting to AA ? nt
  191. how much above B+ will voltage swing in OPT?
  192. bias meter and pot lead length
  193. 211 biasing voltages preferances
  194. Definitely NOT a Loftin-White!!
  195. Val MP 211 info wanted
  196. Look for EL33 PP structure circuit
  197. Rodding Bogen CHB-10A Mono Blocks
  198. two value tube amps for active DIY horns
  199. GEC 912+
  200. soon available as wrist watch.....
  201. Low sensitivity speakers and valvs, no nfb?
  202. Has anyone built this amp?
  203. Difference bewteen ultralinear & triode mode?
  204. 7586 nuvistor
  205. Valve Identification-Help
  206. KT 88 schematic search
  207. Bias the new power tube
  208. 6M6G Structure of the circuit
  209. I Think I Saw Heaven !
  210. Tron Syren
  211. extremely low output
  212. project suggestion with spare trans
  213. cinema amps
  214. c3g producing sparks
  215. Where to get transformer parts?
  216. penta labs
  217. Dynaco ST70 clone
  218. anyone tried the diy paradise simple el84 pp
  219. compression?
  220. 100V trannies as valve OPT
  221. 6bm8 / Ecl82 Pse & Srpp
  222. Lowther LL26 restoration
  223. Can I trust my Valve Tester
  224. (RCA) 6SN7 GTC spec?
  225. re: need help on Counterpoint SA5.1 preamp
  226. Why no CCS in PP output stage?
  227. 811-A amp
  228. DYNACO 120W AMP for DYNA A-451
  229. 35watts el34 amp schematic search ?
  230. tube
  231. My first design. PSE 211 to review.
  232. new 832 tubes?
  233. How to test a tube
  234. 50V line trafos for tube O/P?
  235. Distortion analysis mu follower
  236. the general radio experimenter
  237. resistor value, please
  238. PL519 PP design
  239. Dealers for output irons in EU wanted
  240. Any Twin Power triode Noval type?
  241. ARC SP9 Preamp voltages
  242. Power transformer
  243. OTL for Raven R2
  244. passive preamp (autoformer)
  245. How fragile are Sylvania 10Y tubes?
  246. SE 6SN7/813 direct coupling
  247. Riken Ohm Vs Kiwame
  248. Advantage of Valve Preamp?
  249. SiC Schottky rectifiers.
  250. 30 W from 6c33b?

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