PDA

View Full Version : Tubes / Valves


Pages : 1 2 3 4 [5] 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101

  1. Philco Labled 12AU7A black-plate 45' halo getter- Raytheon??
  2. My FrankenAmp
  3. Panel Meter Install
  4. New Amp With Hum...
  5. EF184-6j51p Load by CCS or Resitor
  6. Slew rate.. Something doesn't make sense to me.
  7. HK Citation V question
  8. Modifying a tube regulator
  9. 6BG6 Push Pull Parallel Amp Build
  10. adapting a FU32 Tube amp for QQE 03/20 tubes?
  11. audio innovations 500 one channel down?
  12. Questions about found Mullard xf1's
  13. SE 6BL7
  14. Sound Valves M60 schematics needed
  15. el34 class a mod advice please
  16. 12AU7 Genuine or remarked
  17. MIT, Triode amp cathode resistor load line
  18. Marry tube preamplifier with 2-Band Wien bridge equalizer
  19. Oddball tube question
  20. Guitar amp screen resistor selection
  21. 6H2n-EB Strange Codes??
  22. Triode Dick's KT88 PP Amp.
  23. Curves to EL 502 and EL 300
  24. Input level 1/2 ECC83 + EL84
  25. SMPS for valve design
  26. Cincinatti Mac Amps
  27. ss rectifier filter recommendate
  28. Determining plate current with non-standard screen grid voltages
  29. allnic hpa-5000
  30. Hodgepodge build
  31. Power Transformer weirdness/wiring problem
  32. Question trafo for Broskie Janus PSU
  33. Copland CVA-306 tube and output capacitor replacement
  34. Choice of Output Transformer
  35. Jumping in with both feet
  36. Large 9pin socket needed
  37. Line-up of old and currently produced RIAA Stages with tubes wanted (like EAR-834)
  38. Question about 6P31S
  39. 6N16B Aikido Cathode Resistors
  40. 1KV umbilical cords.... and other HV issues
  41. 300b Bewitch Amp Blows Fuses
  42. Dynaco ST-70
  43. Front-end topologies for PP
  44. tranformers
  45. How many LesBox units exist out there?
  46. Old Sylvania black-plate bent getter 12au7s
  47. Phono / pre amp section schematic suggestions
  48. 4P1L in parallel Single Ended
  49. Pair of Ampex 620 amps
  50. My SE 6S4S
  51. chinese ebay 12au7 + 6dj8 white cathode follower preamp boards?
  52. "chirp" when power up amplifier
  53. Modified Dynaco PAS Phono
  54. Filter Chokes wired for CMR
  55. Capacitors / K12G Tube Amp
  56. Sansui SM-30
  57. RCA Phono Preamplifier with 12ax7
  58. separate filament transformer for 5u4g?
  59. EL34 Triode strapped amplifier
  60. Testing emission without risk
  61. Anyone Build the Borbely 15W 6C33C SE?
  62. Cheap and upgradable preamp
  63. Source for least expensive tubes.
  64. 5 Pin Tube Socket Suggestions Please
  65. UXCV-11 plates?
  66. Top 5 Most Popular Tube Base
  67. 6C33C and Computer PSU
  68. Output transformer impedance for a 4P1L PSE
  69. Specs of old output transformer
  70. altec 1570b
  71. Mixed tube and ss stages grounding. Best practice?
  72. Any news from Tribute?
  73. What are this....a tube or lamp or etc?
  74. duff tube? Little Bear P1
  75. Opinion on amp build
  76. K12G For Mom & Dad
  77. RIAA Network Position
  78. 6k5GT - Good Tube Curves?
  79. 5902 pentode datasheet confusion
  80. Hum in one channel on Headphone Amp
  81. KT24 datasheet, help !!!
  82. Chicago Standard Transformer Company OPT's
  83. Help on repairing messed up AMC CVT3030
  84. Anyone traced triode curves for the 6CZ5?
  85. anthem pre-1
  86. split supply for tubes
  87. Rufus p. Turner AC-DC amp
  88. 1937 Philco Radio Amp - Build Thread
  89. Transformers for valve headphone amps
  90. Help with negative feedback
  91. Silicon Diode Measurement Confusion
  92. grommet against vibrations
  93. Help with a Moscode 300
  94. Help Identifying Valve Amplifier
  95. capacitors
  96. Questions about console parts salvaging
  97. Regarding EDCOR Transformer Data
  98. PYE mozart
  99. Tube swapping with my Condensor Mic
  100. found amp - identity unknown
  101. how to low the gain
  102. VTL TL-2 tube preamp
  103. Need Advice for Bi-amping
  104. Baldwin organ amp
  105. Octal Aikido with gain/buffer switch?
  106. Harman Kardon Stereo Tube Amp Oscillator Help!
  107. Electro-Harmonex 6973 Question
  108. Power and plate current in a SE amp
  109. 6883B for use as a audio output tube
  110. "Distortionless" Tube Oscillator -Cutting Edge Technology
  111. Feedback RH84 6v6
  112. copper wire from socket bolts to exhaust tip?
  113. What KT88 brands can handle high B+ triode connected?
  114. Williamson-style circuit with Schade feedback using pentode driver stage?
  115. potentiometer for blackface deluxe reverb
  116. GM70 tube copper vs graphite plate???
  117. +/-floating tube PSU for guitar ?! Schematic error ?
  118. About Dark Heater Tubes.
  119. Sylvania 5692 Black base tubes
  120. Tube Tester in Montreal
  121. tubelab.com's super tube SE
  122. Unsual use of triode?
  123. What the hell is Class A3 ?
  124. High voltage triodes (true triodes)
  125. Ceramic Filter Selection
  126. Eagle library for CMC teflon 9-pin tube socket?
  127. Power supply mosfet vs choke filter
  128. Capacitors used in Conrad Johnson PV7
  129. HH Scott 299A center out to subwoofer
  130. PP Amplifier Advice Sought: EL34/KT88 UL/Triode
  131. Search for StepUp 12V->142V @ 6mA
  132. Magnavox 8802 upgrade suggestions?
  133. filament supply using two bridges
  134. 6N2P-EV gain factor ??
  135. Talking tube replacements
  136. Audi Institute VR70E amp
  137. Share Fixed Bias using Diodes
  138. Finished my Tube DI/Preamp
  139. Arcturus Blue Tubes
  140. share your experience on sound of hybrid amps
  141. ideas for a simple ECL82/86 p-p amp?
  142. Tube replacements or substitution
  143. 12ax7 / 12au7
  144. Triode/Pentode Loadline Calculator
  145. Troubleshooting a Fender Champion 600
  146. High Voltage Derived Bias Supply
  147. Universal hybrid triode-mosfet input/drive stage
  148. IT coupled 1624 or 807 amp
  149. Raytheon / Western Electric JW-5755 / 420A
  150. Calculate unknown operating point from known cathode resistor
  151. 5763 triode curves
  152. HICKOK 539a QUESTION
  153. Constant current heaters
  154. max G2 voltage 1624 tube (Tabor)
  155. Need reference for Dynaco MKIV amp build
  156. Biasing Valve on Bipolar Power Supply
  157. Tubelab sse choke input 6v6
  158. $1800 tube amp
  159. Testing a 6N3 5670 etc on a B&K 600 tester
  160. Could anyone shed any light on this amp for me?
  161. Translation Russian EL84SE design please?
  162. Determining plate and screen voltage
  163. I Don't want to set the forum on fire . . .
  164. Valab Ultra Low Noise Regulatible
  165. Westinghouse 6973 Tube
  166. Which is worth burning or keeping
  167. OPT position
  168. Remove volume pot
  169. Headphone amp ideas?
  170. Good Looking 6SN7
  171. UTC Transformer
  172. Cap substitution help
  173. Edcor replacement for w5m peerless opt
  174. Audyn True copper caps.
  175. No Feedback Balanced Line Design
  176. KT120 PP - "low power" baptized Vitruvian amplifier
  177. Senior Design Project
  178. Hovland Sapphire guidance needed
  179. Question about specialized OPT
  180. My first build tubelab SE
  181. k16ls tube amp on/off switch?
  182. SY Tube Phono Improvements?
  183. Tube newbie, anyone familar with s-5 k-502? Help needed please
  184. TVA-1 Michaelson & Austin with problems
  185. New to HIFI tube need advice
  186. Crosstalk between Triodes in Dual Triode Tubes
  187. 6L6GC instead of EL34
  188. Schade feedback and CFB
  189. Sansui AU-70 - Help Needed
  190. Pentode C.F, where to connect the suppressor grid ?
  191. Separate PSU for PP EL34 / 6SN7GT integrated amp
  192. Simple SE driver with mosfet (6sn7/307A) IRF820
  193. Is it safe to run pentode w/ no screen voltage for a min?
  194. Low B+ and CCS question
  195. Has anyone ever used slate in audio?
  196. Semi-Fixed Bias?
  197. Transformers MIC and Phono
  198. Russian capacitor markings
  199. 6L6GC...More Voltage...or More Current?
  200. help me
  201. Anybody built/heard Melquiades amp
  202. Elevated grid bias
  203. Oscillation found in Luxman LX33
  204. RCA phono amp project
  205. Test of 45 Triode with EICO 625?
  206. Standard Silicon Diode Rectifier's VS Ultra Fast
  207. Output Transformer for L3 pre Audio Note
  208. "Boosted" Triode operation?
  209. 6HB6 UL push pull amp
  210. Interstage transformer ratio, spacecharge tubes in PP
  211. 6N6P line stage
  212. Revamping Tube Amp Monoblock - capacitor grounding concern
  213. 845 set bias.
  214. How to improve on a working Hybrid Amp: 832A Tube with MOSFETs
  215. tube outputs
  216. Coupling Cap Consistency
  217. Volume adjustment on 8ch at once
  218. Sub minature tube gain stage question.
  219. DHT PSE 2A3
  220. Plate voltage mic pre
  221. Estimating load for Duncan Amps PSU tool HOWTO?
  222. Shuguang Treasure Series 300B-Z not satisfactory!
  223. Choosing OP of small signal tubes with CCS in the cathode
  224. Aikido help needed
  225. Exploding 300B
  226. power output of EL34
  227. 76tube into C3M (triode) via LL1660 to PP outputstage
  228. best operating points for e182cc tube
  229. Any thoughts about this volume/bal arrangement
  230. Filament tension spring material
  231. DC coupled SE SChade amp
  232. First build 6V6 based
  233. Failed Converting UL to Pentode!?
  234. 1955 kids record player hum puzzle
  235. subwoofer output from my tube preamp
  236. EL84 SE Amp - specific transformer
  237. "GOOD" backup KT-88
  238. New or Old Output Transformer?
  239. Motorola console recap question
  240. Plate voltage on preamp tube too high
  241. Good valve design calculator website
  242. Ultra-on push-pull tetrode 6550
  243. My introduction to tube amps. The good, the bad, and the ugly.
  244. How do I calculate local feedback %?
  245. Newbie greeting & Resource
  246. Tips/Help With a Dying OTL Headphone Amp
  247. 6B4G and ECC83
  248. Maron buys a tube amp
  249. Newbie
  250. 845 AC filaments, my experience

Content Relevant URLs by vBSEO 3.3.2