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. dissimilar triode for White cathode follower?
  2. tube rectifier
  3. 6Vdc from 6,3Vac
  4. Computer Grade Cap or Inverter Grade Cap???
  5. Peculiar Sovtek EL34 bevaviour
  6. 5AS4 sub for 5U4
  7. Preamp hum again
  8. Modifying amp to accept different tubes (Newbie alert!)
  9. Quetion for Thorsten
  10. OPT axis
  11. Schematic Counterpoint SA3.1 and SA-9
  12. optimizing constant current heater supply
  13. Valve Art KT100
  14. baxandall tone control
  15. Kofi Annan in: "Brownin' Out!"
  16. strange tube
  17. Monarch SA-30 Schematic
  18. Power Supply for 300B Monoblock
  19. Matisse Line Amp
  20. Panel mounting on a woode case
  21. Hardware??
  22. another way to turn a pentode or tetrode into a triode
  23. 0Z4 as a rectifier?
  24. Unused HV windings on power transformer
  25. Mundorf M-Lytic and Silver-in-Oil Capacitors
  26. grainy preamp gain
  27. Need help with PS for 1626 "Darling" amp
  28. questions about power supply for 6l6 pp
  29. Proof that demagnetizing tubes works
  30. ECC88/5687/2A3 amp voltages
  31. What can I do with these? (tube and OPT question)
  32. Blowing fuses
  33. questions about transfo
  34. Common Cathode Resistor
  35. Why a Zobel network across OPT primary or secondary?
  36. Morgan Jones "Valve Amplifiers"
  37. Why?
  38. 833 push pull design help
  39. Lamm schematics
  40. Mu Followers -- ressources?
  41. Pennsylvania DIY's
  42. Interstage trans? Yes please!
  43. What's wrong with UL anyway ?
  44. SE amp like mcintosh ?
  45. 300b Push Pull Interstage Tsf
  46. amp stages...
  47. Heater supply recommendation for 6922?
  48. hi-end?
  49. Just a quicky
  50. Question on Mains Transformer
  51. Help! Who is the dirtributors of 6V4/EZ80 and 6H30/6N30?
  52. SE 6AS7 amp question
  53. Timed switch on B+ in power supply, good idea?
  54. Parts Sourcing
  55. Power Supply Question
  56. tube amp kits
  57. in search of a schematic
  58. heater wiring
  59. 5A/152M perfect driver? SPICE?
  60. 12AU7 -> 12BH7 Do I need to change Rp?
  61. Need help understanding transformer impedance ratios and impedance matching
  62. Audio schematics for GU50 ????
  63. 6sn7 & 6sn7GTB
  64. Tube amp schematic - any thoughts?
  65. tube distortion effect.
  66. tube rolling Blue Circle BC 21 preamp
  67. A sorry tale which will make you cry !!!
  68. Variac problems
  69. tubeamp project, weekend timekiller
  70. isolated supply grounding
  71. Car preamp with Aikido
  72. Audio Note M1 potentiometer question
  73. Beginner , tube kit suggestions please
  74. anyone ever used metalized polypropylene caps from Digi-key?
  75. Question on OPT
  76. Telefunken S80 Stereo ECL82 Amp- any comment?
  77. Active crossovers using Tubes
  78. 300BSE power amplifier circuit
  79. tube buffer using 12bz7
  80. "Complete" SE KT88
  81. Output Tube biasing for Toroidal Output Transformer
  82. Cardas Golden Capacitors
  83. Tube Buffer for CD-PRO2M (6922)
  84. Troubleshooting fuse blowing
  85. Billington valves and quallity
  86. Regulated PSU, your comments please.
  87. Change coupling cap from .47uf to 2.2uf
  88. RIAA Schematics?
  89. Line out for subwoofer in tube amps
  90. Feedback in IT coupled amps?
  91. Filemant Voltage
  92. DC compensated SE output transformer
  93. Winding an audio transformer
  94. Tube effects Loop Schematics... ?
  95. Scrap Heathkit W-5m for guitar amp?
  96. KT100...what's this ??
  97. Help measuring output impedience
  98. tubes
  99. Need PP KT-88 amp design and KT-88 for triode use?
  100. 7241 tube
  101. Max B+ for 807 UL?
  102. Fender amplifier.. burnt choke ??
  103. Problem with my Darling!
  104. Effect of cross-coupled "local" FB on plate load of previous stage
  105. wickedly awsome guitar amp
  106. DC coupled long tailed pairs
  107. I need an advice for these tubes..
  108. Anode Resistors on PPP Amps
  109. help with modifing a H/K A500 amp
  110. Damper Diode Musings
  111. Heater Question
  112. Push pull designs.
  113. Anybody heard about Tarzian Silicon Rectifier for Tube Rectifier Replacement?
  114. Voice of Music 555 phonograph
  115. Direct driving of GM70 by one ECL86 ???
  116. Bogen amp schematic
  117. 6336a
  118. Power transformer colors & wiring
  119. Stepped Attenuator and Selector Switch
  120. Music without speakers? Need help.
  121. el84 ultra linear datat sheet
  122. 2a3 layout
  123. Matisse Ref per amp
  124. Recommendations for Simple SET Amp Topologies
  125. HV power supply repair
  126. Grundig Model 3265U Restore?
  127. Valve Art EL 156!
  128. Classe A 6550 40W
  129. Lafayette Bypass Option
  130. Plate curves or Op Point for 6KN8?
  131. 12e1 sub for 807 ?
  132. Extremely low power and low loss transformers
  133. looking for power supply diagram SE 813 45 Watt
  134. How to make this 6C33C better??
  135. All octal 6AS7 PP amp is it possible?
  136. Toroids VS EI Transfomers
  137. Bias secrets for a HH Scott 233?!?
  138. new idea of DHT heater supply
  139. UL40-S2 schematic
  140. Eastern Audio transformers: any good?
  141. Tube monster amplifier
  142. Big pentode help!
  143. which one?
  144. system matching
  145. a 5ar4 problem
  146. coupling capacitor intermediate values
  147. Quicksilver Mono 60 upgrades
  148. Can anything be done
  149. OTL ECC88 amp
  150. Bridging Mono Blocks
  151. Cathode-coupled Phase Splitter Formula
  152. Drd 45, 300b
  153. SV572-30: Opinions?
  154. Poor man's transformer volume control?
  155. Output current of this CAT SL-1 schematic ?
  156. Fixed Bias Circuit for 300B
  157. want to build SE450TL
  158. Tubes lifetime and sound
  159. Heater supply problem?
  160. Lowering HV secondary on Power Transformer
  161. Van der Veen 70W tube Amp DIY
  162. 5751 for marantz 7 linestage
  163. To be or not to be, UL or quad?
  164. Tube Failure
  165. 12AX7 Compared!
  166. transformer case grounding
  167. pre/amplifier grounding
  168. First Time Amp
  169. 6ck4 pp amp
  170. JJ electros, any good?
  171. 6AQ5A guitar amp revisited
  172. fun with amps
  173. Newbie needs clarification
  174. looking for powerful Single Ended diagram.
  175. Power amp output newbie question
  176. SE ultralinear amplifier generate a lot of Odd harmonics ?
  177. Grounding Filament CT?
  178. one more 12B4A preamp
  179. 6V6PP -> 6L6 PP with triode connection.
  180. ? about powering a sub with a Fisher 30a mono amp.
  181. Will This Blow Up?
  182. Pin out conversion 6V6-6AQ5A
  183. 211
  184. Nice looking rectifier tubes help
  185. Stepped attenuator inquiry
  186. Designing a Phonostage with the S&B 10K LCR RIAA Module
  187. 211 tube
  188. The T-Rex SET Amplifier DIY project
  189. Strange Wiring in Bogen 6v6 PP
  190. 6AS7 amp schematics
  191. Blue glow confused :(
  192. 6V6 SE and Screen Grid Voltage
  193. 6BQ5 <-> 6V6 without socket job...Any Idea?
  194. Melbourne, Australia valve enthusiasts check in!
  195. HELP! Blown R + HIGH V!
  196. PCB Pad Layout for B9A Noval
  197. DIY tube amps - help??
  198. New home made S.E amps
  199. Amplifier Oscillation
  200. First project, need guidance
  201. Cap max value after 6X5GT/EZ35 rectifier?
  202. Any tube-heads in Scotland?
  203. Care and Feeding of Tube Pins / Sockets
  204. MFA Luminescence--need schematic
  205. Tube technology amplifier
  206. Transformer questions
  207. Siemens C3g headamp problem
  208. rca83 hash?
  209. Skyline SK-10 Amplifier info?
  210. Tube Stereo Consoles from Thrift Stores
  211. Aikido amp theoretical questions
  212. 6V6 Single and 12AT7 SRPP
  213. What 45 SET amp should I build?
  214. Ping. Burnedfingers...
  215. ? problem with www.ampwares.com ?
  216. Pentode spud...?
  217. Type 46 as voltage amplifier
  218. Tube compressor problem!
  219. Using the 83
  220. Organ amp project
  221. Any feedback on these trannies?
  222. 300B PP bias and expected life time
  223. Mono block restoration
  224. Question about cathode bypass capacitor
  225. www.diytube.com Kits
  226. need help!
  227. Need opinion on PS for tube preamp.
  228. Stanley Mullard
  229. 6AK4, Anyone?
  230. interstage transformer
  231. Are matched sets important for this amp?
  232. What to do with ECC88's?
  233. EL38's ?
  234. Cables/tubes for Valve Amp
  235. 8233 / E55L Applications
  236. amplimo budget outputtransformer
  237. Output Transformers for WE-437a WOT Line Preamp
  238. plate resistor, input lead
  239. KT88 PP with Class-A/Class-AB switch
  240. very loud preamp
  241. Pentode current sink
  242. Hammond vs. James?
  243. Tubes for Scott Nixon dac
  244. James SE OPT for 300B & 2A3 on eBay
  245. pre-amp with 6as7??
  246. pre-amp with voltage gain from transformer only
  247. Help! Mystery tube (?) amp (type: HK56)
  248. Regulate the high voltage making better sound? (Preamp)
  249. Power Transformer
  250. Potentiometers UK

Content Relevant URLs by vBSEO 3.3.2