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 99 100 101 102 103 104

  1. reduce before amplifying?
  2. 6AS7-G RCA application considerations
  3. Matisse Fantasy waveform output test
  4. El84/6bq5/ecc83 + Ef86 = Dc Pp
  5. Searching for simple circuit
  6. McIntosh MC60 Screens
  7. Improve this Pilot 240 (EL84/6BQ5)
  8. Eimac 35TG
  9. power supply issues
  10. Which Amperex ECC88 is the best?
  11. Grid battery bias on phono....
  12. EL34 identification
  13. UL vs SE
  14. 6sn7 operating points
  15. HELP! B+ voltage problem/burning power resistor
  16. are these tubes any good ?????
  17. E280F Triode mode operating point
  18. Free Lunch/Monkey/DRD inspired 2A3
  19. 2nd Aikido PCB and PSU groupbuy
  20. Newbie question...
  21. Help in getting more gain out of 300B SE
  22. ECC808 what to do
  23. Microphonics When Hot, Raytheon CK5842
  24. MOSCODE hybrid DIY
  25. transformer question
  26. help, my amp humz
  27. Le tube preamp
  28. Ideal operating point of 6sj7
  29. Anyone tried the Hammond 1642SE in a BIG SE amp?
  30. MOSFET current source as triode load
  31. C-core transformers
  32. choke and choke
  33. suggestions for 300B tubes
  34. Differential input stage
  35. rca conversion
  36. heating
  37. Russian 6N8S/1578
  38. DIY tube amp squeals when turned up
  39. ECL80-Amp from Andreas Kirschner
  40. HSS preamp, anyone care to comment
  41. help me design an input stage for 6b4G PP
  42. Instrument/Microphone Tube Pre-amp
  43. first-time tube DIY project...phono preamp
  44. A question regarding schematics
  45. My first creation
  46. Your opinion on this VCCS heater supply please.
  47. Looking for ORIGINAL GE 6L6GC
  48. Need help - O/T trannies for future project
  49. ECL82 (6BM8) PP Stereo
  50. first DIY amp start up-yowza HELP!
  51. Ronette Info
  52. GE 5687 (5 stars)
  53. Help: Toroid choke for a preamp
  54. does meter degrade sound ?
  55. Eye Tube (1629) controller help
  56. Scott 99B & 99C Public Auction Find
  57. tube id book
  58. radio , tv station and radar stations still use the best single end class a amplifier
  59. Stupid question?
  60. looking for ideas on a small tube amp stand?
  61. Cascode gain stage info?????
  62. hi gain preamp
  63. Tube flashing
  64. Bogen tube amp with variable Damping Factor
  65. Question re Allen Wright PP-1cs
  66. High Gain Preamp
  67. SACThailand
  68. You know you're a tube junky when...
  69. 6AU6 to do EF86 duty?
  70. 6Н28Б-В datasheet?
  71. Is single ended Class A better than push-pull?
  72. Is 845 better than 211 tube amplifier?
  73. Cool Fireworks (tubes are tough!)
  74. Big Big hum ???
  75. 5687 filament heater question
  76. Anyone know agood MOSFET drive for RCA 811A Tube?
  77. Who is into musical instrument tube amplification?
  78. buffer stage ECC88 or ECC83?
  79. EL34 Integrated
  80. Solid state HT regulator??
  81. Tubes driving dipole mids
  82. How do I turn an high current signal into a line level signal??
  83. Peer review, UL question
  84. Grundig TK60 - Where is the Line Out ?
  85. 12AX7, EL34 or 6L6 design wanted
  86. RCA to Speakers?
  87. Morgan Jones - Valve books
  88. Any one tried to use subminiature for input tubes?
  89. Tube data for current manufacturers?
  90. Pentode to Triode Switch
  91. fried Heatkit IP-17 power supply
  92. Suggestions for Tube Amplifier
  93. SMPS for 300B heater ?
  94. What does this mean?
  95. heater/cathode query
  96. Bottlehead S.E.X Amp
  97. Old Meets New
  98. 6336-SE modification
  99. 6as7 pre-amp questions.
  100. Help in calculating NFB loop.
  101. ECL86 - quick and dirty
  102. preamp tubes change
  103. Parallel PP ECL86
  104. Anyone build a Minimal Reactance PSU?
  105. Transformer hook-up question to 115V AC line
  106. Langevin Schematic Archive
  107. PPP EL84 Amp
  108. Interesting comparison between NOS RCA 12ax7, Chinese 12ax7a
  109. Aikido: Width control
  110. Shielded Input Wire
  111. choke
  112. Multiple Inputs in One Shielded Cable?
  113. Presence control on a SE ?
  114. Question : pentode ccs schematic ?
  115. right capacitor value?
  116. Anybody knows this tube--WE 430C
  117. Transformer substitution help
  118. CFB Issues
  119. Please Suggest: Old Tube Usages
  120. Very powerful push/pull circuit
  121. Project choice for KT88
  122. Tamura F-475 in Parafeed?
  123. Kofi Annan in: "Push and Pull with Me"
  124. Schmitt dephaser
  125. Anyone using Chelmer Valves?
  126. SET w/ 300B Ultrapath + Parafeed Typologies
  127. a question about local feedback
  128. about input transformer
  129. Power transformer selection madness
  130. EF91 Line Stage questions
  131. Sourcing parts for Dynaco PAS rebuild
  132. HH Scott 223 monoblock schematics
  133. info needed on the 7c6 tube
  134. A final question on grounding(yeah right!)
  135. Schematics and Manuals Site Found
  136. Sprague/Cap Color Codes ?
  137. saba console radio working?
  138. Feedback and mu-followers
  139. Hundreds of 6AL5s
  140. Orange/Red Spot on The Anode of Sovtek 6L6GC
  141. Best way to isolate non-isolated RCAs?
  142. Power Resistor Smoking on HF-81
  143. Audio Innovations L-2
  144. first tube project
  145. And now a question about power switch...
  146. 2E24 ultralinear
  147. tube pin numbers
  148. Will This possibly work?
  149. What is the right current for a 300B at 400V and -80V grid bias?
  150. Simple Cap-Coupled CF Advise Needed
  151. tube amp layout reality check
  152. plitron
  153. How long does a 7199 last?
  154. CAE Cascode Diffamp Front End
  155. 6.3V Rectifier Tube Lit by 5V
  156. Precision Electronics Amp w/ 6GT5's, Convert to 6L6's?
  157. WE121A, Please critique me
  158. Grommes / Western Electric G5M Tube Mixer Mods
  159. schemes needed
  160. PP to PPP
  161. aikido voltage swing
  162. voltage drop across a CCS...
  163. bogen db20 Schematic
  164. Mullards branded as Telefunkens???
  165. Pentodes; plate resistance; damping...
  166. PP amp has become SE?
  167. anyone mod a NYAL Moscode superIt?
  168. update to phillips sepp otl?
  169. DC filament supply LC or CL
  170. No Bass Control
  171. Unison Research Simply2 or s2schematics
  172. Border Patrol Power Supply
  173. Any leads on repairing a vintage Alamo Capri tube amp? >>
  174. nanocrystalline amorphous OPT
  175. El84 Pp
  176. Preamp, Euridice?
  177. Has anyone built a PS like this?
  178. Tube sockets in Eagle?
  179. E235L tubes
  180. Grid Input Transformers
  181. Aikido Power Supply
  182. ralph power pp amp with 807 ?
  183. tube stores in moscow
  184. 211 and 845
  185. Need help with amp
  186. Altec 1570B
  187. UL to triode
  188. How can I improve this tube amp (see pics)?
  189. klimo merlin preamp sch wanted
  190. CCS question
  191. *****es brew step 2 ... or grid bias ... how to?
  192. Filaments for the Aikido
  193. RE: RC-19 or RC-30
  194. My experience building a DRD d3A/300B amp
  195. TIP50 + LM317 High Voltage Regulator
  196. Any info on old "Cosmos" amp'?
  197. What more do I need to know?
  198. EBAY Find Of The Year Club LOL
  199. Partial feedback DHP SE amp
  200. newbie question
  201. Tube 1616
  202. Class A tube integrated circuit request
  203. Global Feedback Source Point
  204. These look interesting for that SE project
  205. Phillips AG9008 amp - looking for diagram
  206. 3cx3000
  207. EL86 and speakers? 800 Ohm
  208. Looking for CAT SL-1 Schematic
  209. el84 - 807 ?
  210. Low-voltage Tubebuffer by David Lin
  211. changing diodes with 5AR4 tubes
  212. 801 amp PS
  213. what can I do with these tubes?
  214. How to 'fine tune' your amps?
  215. Otl
  216. Rogers E40a schematic?
  217. Butler Monad A 100
  218. Using the UTC LS-33 as a Push-Pull output for 2A3's
  219. 2A3 AC filament hum
  220. A question about diodes...
  221. 5R4WGY/A/B , input filter capacitors
  222. attenuator hook up?
  223. best material for mounting tubes sideways
  224. Amp suggestions needed
  225. CC vs EI I mean toroids are out of question
  226. Newbie need help in designing tube preamp for my 3886 GC??Please Help me!!
  227. Inviting Comment on Schematic
  228. SE 2A3 input stage
  229. DIY Tube Amp Questions
  230. Need tube buffer circuit for sub-woofer out
  231. How to connect electrostatic shield of power transformer?
  232. Your favourite filament supply for DHT's?
  233. Quantum Impex
  234. Channel Switching Real McTube?
  235. so who owns a dac5 or m8 phono
  236. OPT at frequency extremes
  237. Parafeed with resistive load
  238. EL34 SE triode mode A class sch wanted
  239. Dumont (where theres smoke theres sound)
  240. HYBRID- Schematic
  241. I have a pair of JBL control 5 speakers, which valve amp design you recommend?
  242. sovtek 300B
  243. 12au6 preamp
  244. Engineering Drawings PCB Mount Tube Sockets
  245. Help with a choke for first-time DIY...
  246. Power SRPP
  247. Anode Loading Vs. Cathode Loading ?
  248. Purist 2 Line Amp
  249. Yet Another "EURIDICE" Pre Amp, 4CH This Time
  250. radio receiver

Content Relevant URLs by vBSEO 3.3.2