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
  1. 6HB6/6HA& Spud?
  2. schematic diagram golden tube se40 for repair! help
  3. Reliable B+ PSU for pro preamp
  4. Help me find some info please
  5. Some tube radios
  6. Electro Harmonix 300b...shorting problems?
  7. Aikido linestage tube choice? (again)
  8. Teeco 1220??
  9. magic smoke pilot aa903
  10. PP bias balance pot
  11. Jolida JD 502A
  12. Cathode Bias for SimpleSE
  13. TRemPre malfunctioning
  14. HV benchtop power supply, help on opamp setup
  15. Transcendar Output Transformers ST70
  16. Unofficial Tube Market Survey
  17. testing 6DJ8s
  18. 6L6 AB PPP stage; does it make sense?
  19. 7868 tubes - replace with 6L6's?
  20. Vintage Amp...too much gain on CD
  21. ETF07 - Last possibility to join
  22. Tube 7403
  23. New SET: JE labs simple 45 or tubelab SE?
  24. Melos triode and computer as source: BUZZ BUZZ BUZZ
  25. 6SN7 Cascoded CCS
  26. 7591 se tube amp?
  27. Sovtek 5881WXT/Quad II
  28. Adding more capacitors to an AMP
  29. Tube Characteristics
  30. Tube guilt
  31. KT88 or 6550
  32. Single ended OTL Transcendent
  33. K-12 kit, buzz in R channel
  34. Hickok 752A repair
  35. my new tube line stage
  36. Audio Innovations Series 200 Phono Stage
  37. is it correct to calculate OTL?
  38. Late Halloween Cartoon
  39. on/off/on switch for bright/bold?
  40. Another CCS for tubes/valves: PCBs
  41. Customdaveus
  42. newbie questions on Bogen M330A repair
  43. crackling sound from one channel
  44. Cosmos Valve amplifier
  45. The Vacuum Tube Truth
  46. Inverted Triode SE OTL
  47. Negative feedback problems on ECL82 SE amp.
  48. Cheap tester?
  49. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  50. Fisher SA 1000
  51. Hot Hot Hot
  52. Dynaco PAS-4 manual
  53. amplifier pp with 6p3s
  54. rusty chassis - what to do?
  55. Use 9 pin Aikido PCB kit or buy 8 pin ?
  56. Where to find data sheets?
  57. how to reverse signal for Common Cathode circuit
  58. Audio note M2 power supply resistor value
  59. Are 6DZ7 to Rare to be fun?
  60. 7868 substitutes
  61. Millet Hybrid - stacked buffers
  62. Repairing an old tube raido
  63. 3 way ultimate DIY phonostage match!
  64. wanted sv572-3
  65. General Aikido power supply question
  66. question about beefing up my monoblocks
  67. multichannel tube amp
  68. Who can explain this FFT graph to me
  69. Equivalent Noise Resistance
  70. Any Tube heads near Central coast NSW
  71. Question
  72. Screen Supply For PP Amp
  73. Datasheets: RC coupled amp VS. typical characteristics
  74. How to calculate Tube Preamp output impedance?
  75. What vintage tube books do you own?
  76. re design of a SE tube amplifier
  77. NRI 70 tube chart
  78. Multimeter
  79. fizzy and unstable
  80. Russian spud amp
  81. Silly Question about 807
  82. Help with dared MP-15, please!
  83. tube tester B&k 606 Transformer brun need help
  84. Do tube curves tell most of the story?
  85. Sovtek 6B4-G
  86. Ultimate Amplifier
  87. How quiet is dead quiet?
  88. Max B+ for triode-connected KT88
  89. Acrosound Archive
  90. Hail to Vintage Power Transformer & Choke?
  91. 2a3 parafeed
  92. Kimmel mu stage
  93. 4043c
  94. Impedance quandary
  95. 6L6G Amp recommendations
  96. Beefing up the power supply
  97. System distortion and Single Ended Tube Amps
  98. TB3/1000 is alive ! ("European 833A")
  99. Another tube newb
  100. Decoding another recycled power trans
  101. parafeed plate choke calculation
  102. New to tube building / design - Input requested!
  103. tube preamp with hum??emf
  104. Which tubes for this OPT?
  105. Vacuum tube tester, do you own one?
  106. Ping salas re: LED baising
  107. Model train throttles?
  108. Microphonics that go away by themselves
  109. Variable cathode/plate resistors?
  110. 2 newbe questions
  111. 12B4A + LL1671 Linestage
  112. crate vintage "club 50" schematics needed
  113. Distortion Analysis using an Oscilloscope
  114. Western Electric 'Harmonic Equalizer'
  115. Tube Newb Mc Intosh questions.
  116. AH NJoe TJOEB, valve compatibility issue
  117. Tubes: test as New? translation please
  118. new s5 tube amp kit
  119. Stereo BusBar OK?
  120. Fi Primer 807
  121. Calculating power output in the design stage?
  122. Overdriving the grid of a triode
  123. Newb Questions RE: HS caps & B+ Bias
  124. mercury vapor... i love it!!!
  125. Interstage Couple 300B 811-3 SE amp
  126. PCB Trace Clearance for High Voltage
  127. youtube - tubes!
  128. Noob to the Leak ST20
  129. Unconditional stability, phase shift and feedback
  130. An almost DIY 6DJ8 Linestage
  131. Is Acrosound T-330 really good?
  132. My 1st amp just came to life......pics
  133. Russian tube power amp repair
  134. Unity coupled circuit amplifier.
  135. info about lectron JH50
  136. G.E. 6CA7/EL34 - any good?
  137. black face champ tubes
  138. SS Preamp and Tube Poweramp
  139. Values for OTL totem pole (cathode followers)
  140. 12au7 preamp will not work
  141. A Slew of Beginer Tube Questions
  142. calculating b+ voltage drop, decoupling?
  143. Another SET 2A3 in the world
  144. Help needed with Lectron JH 50 Amp
  145. Audio Note M2 regulator schematic
  146. 300b
  147. Three Simple Questions!!
  148. Edcor Transformers
  149. LTP with CCS - IM Distortion
  150. Tubeman I tubes and pots
  151. Strange 45 behaviour - help
  152. I have $250 to spend..what amp should I build?
  153. CCs plate load for mu follower 6sn7
  154. Best use of S-265 opt?
  155. what would be a reasonable price to pay for this tube ?
  156. Distortion Neutralizer for Odd Harmonics
  157. 6H13C preamp
  158. Testing tube for noise
  159. Optimal Umbilical Runs and Connections
  160. Little Dot MKIII, faulty driver tube, GE5654 alternative in the UK?
  161. Film capacitors for decoupling
  162. Non-simultaneous Pentode anode/G2 turn-on
  163. ArnoldC's IT coupled 300B amplifier
  164. Ultralinear pse
  165. Using 0D3's for DC regulation in Aikido
  166. ECC40 preamp
  167. Newbie PS questions
  168. Preliminary 12AX7 guitar preamp
  169. Another cap replacement: uF changes..
  170. parallel EL84 transconductance amp
  171. Quad II Modified by Glenn Croft
  172. Wanted:Power transformers for Welborne DRD 300B amp
  173. Just finished testing my first 832A amp
  174. Russian Transformer cores
  175. Suitable diagram so I can use 4x Telsa RD 200B and 8x Tungsram RG 250/3000
  176. 15E and plate curves
  177. Replacing 6N1P' s with 6922s or 7308s
  178. the "cheapo"
  179. OPT Quality Factors?
  180. 50CA10 pushpull amp
  181. New Hammonds?
  182. Welborne Terraplane Amp-PS10 HV Regulated PS Problems
  183. Voltage Gain Confusion!!
  184. is this ok to build???
  185. PSUD2 help needed
  186. It's raining 10M45's!
  187. Grid Leak Bias on small signal pentodes.
  188. Equalizing + & - output voltage?
  189. Help with ECF80 spice model
  190. Would a Williamson sound better with a CCS tail in the driver?
  191. low ac voltage question
  192. Aikido/SMPS/SKA SS
  193. values of ground(?) coupling caps in Aikido
  194. Please explain grid stoppers..
  195. Psud2 Help
  196. Appropriate Iron for 211 Triode SE
  197. does anyone know the resistance of a hammond 300bx transformer
  198. Help with Aikido B+ Bias layout
  199. 12v 6BF7 preamp design tested
  200. power supply PLEASE HELP
  201. power supply PLEASE HELP
  202. power supply PLEASE HELP
  203. tube amp
  204. 6AU8A, and assorted questions
  205. PPP OPT clarification
  206. ECC83/12AX7 Tube test query
  207. 0D3 shunt regulator for single ended duty
  208. where to buy parts (transformers and chokes)
  209. beefy choke -- please help
  210. 5W EL84 drive EL84 SE
  211. Calculate minimum load current of choke?
  212. Best Sounding Output Tube
  213. Best internal wiring for power
  214. Preamp with DHT
  215. bogen m60 and webster pa
  216. 6p13p schematic
  217. Buzzing Choke - Any Ideas?
  218. Floating A2 Bias
  219. Any SE project for 91db speaker?
  220. Hammond Mains Transformer - Center Tap Split
  221. TINA-TI Tube Simulation
  222. Fixed Bias v Ultrapath
  223. Traynor YBA200 6550 help!
  224. cathode follower asymmetric slew
  225. 6SN7 with transformer coupling
  226. 6AQ7 - why so cheap???
  227. Grommes 260
  228. heathkit aa-81 mono blocks
  229. feedbackless interstage p-p kt88 amp
  230. Using Horizontal Output Tubes - Power Supply
  231. 6e5c
  232. Mr Liang 845 Sound :(
  233. Test pentode grids without a tester
  234. Info required : GAMMA VALVE AMPS..
  235. 6SN7 plate voltage, current and lifespan
  236. Clarification of floating heater supply
  237. Changed a cap and lost some bass...?
  238. 6P9/6AG7 Triode Amplifier
  239. Chokes Designed for Choke Input PSU's
  240. Power trafo...
  241. Any value to modding a UL OPT to CFBK?
  242. One guitar, multiple amps at once?
  243. Rogers Cadet III Advice & Opinions Needed
  244. DCG5/5000GS Valve
  245. Morgan Jones on Google Books
  246. CCS for 12B4 linestage
  247. 6j9p
  248. philips hf 303 amp
  249. DIY tube testing Curve Tracer
  250. Amplifier impedance and pot selection