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

  1. vacuum tube score.. what to do with
  2. Valve based disco mixer.
  3. Webcor ceramic phono input circuitry suggestions?
  4. Position of OPT windings
  5. sd2 seven pin??
  6. Help design a Small 250VDC PSU for tube preamp
  7. Bright Driver Tubes 12AU7, 12BH7, 5814...
  8. Question about using tube socket center hole for star ground
  9. Heathkit UA-2 clone project
  10. Latest on the RH amps..
  11. Transformer design program
  12. 807 "Musicians Amplifier" help
  13. J.E. LABS PP2A3 POWER SUPPLY ?
  14. Mono Block Building Project
  15. EL34 CCS ideas
  16. Magnavox 8601-20
  17. wood/metal vs all-metal chassis
  18. Design data on dry battery tubes
  19. Differential tube with a gain stage 1178
  20. 6C4C tube ...Good to buy ?
  21. Including a C- winding on a filament transformer
  22. CINEMAG 15B TRANSFORMERS balanced>unbalanced
  23. Rebuilt Heathkit AA32 with hum on MAG PHONO input
  24. Tube Socket ID
  25. JJ 5Y3S is too tall...need smaller tube
  26. Uniamp 2A3
  27. buzz noise from paraphase circuit
  28. Benefits of Enhanced Triode Connection
  29. Working out a valves load resistance?
  30. 813 Alternatives
  31. Help 6N6T pinout
  32. Very large parafeed cap
  33. Bright purple flash 6N1P
  34. Harman Kardon Citation II - rebuild questions
  35. Stoetkit junior mk2
  36. 1619 Push pull output stage
  37. Tube getter
  38. The sensation of the 21st Century. Galvanic SUPER HIGH END PP power for all types of
  39. Audible Illusions and 6922
  40. quick access tube amp protection
  41. Identifying Genalex KT66 matched pair question
  42. Hunting 100Hz noise in SRPP+ stage
  43. JJ ECC83S Biasing conditions
  44. Audiophiletalk - Dirt Cheap SE
  45. 12AL8 Head-Amp with UTC Output Transformer
  46. SET monoblocks?
  47. EL84 Push Pull design from left over parts
  48. Strange UL Transformers
  49. Stabilization balanced currents in the PP stage.
  50. Current mirror stage in PP
  51. EL34 SE ultralinear schematic
  52. Question: Acceptable DC current in push-pull output transformer due to tube mismatch?
  53. Toroid Power Transformer For GM-70 845 211 1000V
  54. Building the "Crystal Palace" Amp
  55. Upgrading OPTs in production amp? (Yaquin MC-10L)
  56. any good Triode 6H8C preamp schematics out there???
  57. pushpull 6aq5 distortion
  58. Mr. Lian 845 SET more kit rather than commercial product.
  59. Opinion for otl ocl headphone amp
  60. Tube-newby wanting to make a good tube amp
  61. Anyone used a voltage tripler PS?
  62. Audioromy 828A / FU-29 tube layout
  63. Choosing Cathode Bypass Capacitor
  64. Ground loop gremlins
  65. Crackling Amp after Accident
  66. New CCS/ depletion mode MOSFETs available... experience anyone?
  67. Mengyue Mini
  68. Parafeed quest
  69. Determining linearity - differential gain stage
  70. 6HB6 - Any pratical experience?
  71. 27 Tube Preamp design questions
  72. Output Transformers Mount Position
  73. Critique please: Fixed bias 7591 SE
  74. Coupling Cap Improvements?
  75. RL 12T 15
  76. Tube instead of anode resistor
  77. HELP!! Terrible 50Hz hum in Mullard 10W DIY amp
  78. My New 45 SET (choke-loaded 6SN7, direct-coupled)
  79. Hf31 fidelity valve type
  80. Design of transformers for valve amplifiers.Part2
  81. Harman Kardon ta5000X alignment/manual
  82. Help with an analog meter hack
  83. dirkwright phono
  84. Zener Voltage Regulator
  85. Fisher X-101-B Substitute for 7591
  86. UNU-pnono riaa mm preamp
  87. My old amps
  88. Switching regulator on Kickstarter
  89. my yaqin 100b will not bias on v1 v3
  90. Zenith model B835R
  91. Want to build 2a3 amp for old radio
  92. Preamp Advice
  93. simple 5687 pre amp help
  94. Pulling TV From 61 Maggie Imperial Console?
  95. I can buy some 6U9's cheap - are they any good, and what could I build?
  96. K8011/K8010 PCB build thread
  97. Choosing an op point when using a tube 'off label'
  98. Choke inputs
  99. Unbalanced In > Balanced Out line amp - How To Do It?
  100. 6146b output transformer. I'm new and I need help.
  101. Your first DiY Low Cost/Low Voltage tube AMP
  102. Need some advice on OPT for kt88/6l6
  103. 1:1:1 transformers
  104. Output transformer in the cathode?
  105. Popping DC
  106. Power transformer wiring issues
  107. easy question - Magnavox 86-01 owners...
  108. Mic preamp input transformer alternative?
  109. What's the Best Way to Reduce Gain in a Preamp
  110. safety with high voltage input capacitor ?
  111. SE EL84 amp - reducing 100Hz hum
  112. Photos of large DHT preamps? (Or large amps in general)
  113. Minimum pin length (noval)
  114. Biasing of KT120
  115. SE to balanced transformer
  116. Decoupling Cap value - How Much?
  117. Cathode bypass Cap vs. No Bypass Cap
  118. Interesting circuit I thought.
  119. Yet another K12G thread
  120. 6N3 tube preamp question
  121. Driver vs Power tube
  122. Help in Bias tube amp for Adis Devy 7
  123. Tubes and HT
  124. HiFiMan EF-2A schematic sought
  125. Please, help with a WE91 project on behalf of a friend
  126. Proposed Headphone Amp Overhaul?
  127. protection of downstream line amp
  128. Is the 6E6P suitable for audio?
  129. me clone proto EL/PL 504
  130. Improving headphone amplifier
  131. 5902 LSTPICE Model
  132. Canary CA-301 PSU
  133. 3B28 oscilator
  134. A lot of schematics
  135. V8 amp
  136. market by Jac music
  137. 6P3C-1 SE ? .
  138. Cary slp70: Worth to upgrade?
  139. Adding NFB makes headphone amp sound AWFUL!!!
  140. Filaments hard wired to B+ on EZ81 base
  141. What the bird is OS 18/600?
  142. ccs 10m90s what is wrong?
  143. Topology for balanced preamp
  144. 6v6 vs. 6l6 vs. 807 soundwise..
  145. Opinions/Advice on Triode Strap method
  146. Something like a Miniwatt N3 or APPJ PA0901A
  147. Extraordinary harmonics. Type 47 # tube amp.
  148. Made a new tube amp, 6J5 +27 +45
  149. Anyone ever play around with a GU-72?
  150. Possibility of using a UTC LMI-500 transformer...
  151. Aikido transformer
  152. Can someone explain why you need to re-adjust the balance on a tube amp every time
  153. Which factory made these tubes ?
  154. 813 and gm70
  155. 13E1 Push Pull
  156. dump find.
  157. ...6SN7GT operating points tube help.......
  158. 6L6 6SJ7 Amp please pick faults if any
  159. Updated DIY EL34B 6SJ7 SE Amp
  160. 6C18 x 6C33
  161. Vintage tube amp find
  162. any benefit to screen-grid drive a 6V6?
  163. Brown face Scott LK72
  164. Pilot 1060 integrated - make it better!
  165. Should I ground my K12G or my Bugle 2?
  166. 6c33 amp convert to 6c41
  167. STA-LEVEL thumbs problem
  168. Amp motorboating at power up
  169. Spice models for AL4 and RS242 tubes
  170. Mains Switch
  171. Suggestions for big output stage needed
  172. Very Good (or best?) 12B4 schematic?
  173. Amplifier for active bookshelf speakers
  174. Olson AM-240 schematic needed
  175. Valve amp - maintenance
  176. Your opinion about Rotel 930AX to hyrbid mod
  177. Tube circuit sim software for free?
  178. 6v6 family tubes
  179. Troublesome bias resistor, cathodyne stage
  180. 6AQ5 excellent for line stage?
  181. Datasheet 6P42s and 6P45C
  182. Quad / Cyrus impedance matching
  183. Zobel network at primary audio trafo?
  184. ECL86 question
  185. 500c buzzing power transformer
  186. LM4702+6L6GB/807
  187. TubeAudio Mixer Blog
  188. Finally started on my 6L6 amp. Need tube suggestions.
  189. Just another Scott thread
  190. Design for overdriven output stage
  191. Seeking Articals On Audio Transformer Design & Construction.
  192. Bias el34 pp
  193. Photo Gallery.
  194. Precision S35
  195. 6L6WGB
  196. 6BQ7A Driver
  197. Advise for Simpson 340 signal generator problem
  198. Armaco TTHF or Calrad AP 15 What to do What to do?...
  199. Screen Power and Warmup
  200. Wanting copies of Prof. Alexander Bereskin's transformer winding pictures.
  201. Edcor CXSE25-8-3.2K or Transcendar TT-017-OT?
  202. PP 2A3 Fixed Bias
  203. RL12P35 convert to el34
  204. Statistical regulator from VA 4rd edition
  205. Matching Impedances (the Math behind it) Please Advise if you have a grasp. Xfmrs etc
  206. Help 6AQ5 pushpull
  207. HV Logic Control Approach
  208. Valve heater question
  209. Phase inverter adjustment - Fisher 80AZ
  210. Repurposing a Bogen CHB-35A
  211. SMPS
  212. Interstage and bias failure
  213. Grid 2 current for GU19-1
  214. 6x5 tube
  215. IT coupled 6BG6GA
  216. Mystery noise has got me baffled
  217. Dynaco PAS: too much liposuction?
  218. LP Tape Noise
  219. YAKOV ARONOV MA-100
  220. Help for balance-tone control-mode selector bypass
  221. Design of transformers for valve amplifiers
  222. Opinions please: seeking a first class DIY SET amp design
  223. PSU for 6N6P
  224. HOT B+ capacitors!
  225. Analog meter monitoring HT supply
  226. Lamm LL2.1 DC Offset problem
  227. 6L6GT/6SJ7 Valve Amp DIY
  228. BHExchange for BottleHead's
  229. 6BY5GA elevated heater question
  230. Tone controls
  231. EL84 "IP" questions
  232. KIT Single ended KT88
  233. HELP needed - LEAK Varislope 2 Stereo + Stereo 20 with pictures...
  234. All tube cap tube amp?
  235. 12AX7 preamp for DAC
  236. Grid resistors -> GND
  237. OTL headphone amp distorting & clipping: weak power supply?
  238. Broken bias resistors (Yaqin MC-10L)
  239. Tube Enclosure suggestion from Europe.
  240. Benefit/SQ of tube stage at the input of ss power amp
  241. Is 6907 and QQV03-20A tubes are same?
  242. Found some chokes
  243. 6SN7 at low plate currents
  244. 12AU7, 12BH7, Darker Less Bright Option
  245. Heater current effects
  246. Not using all the sections on multi-section cap
  247. DC heater supply dies on me
  248. 1972 Leak Varislope 2 Stereo
  249. OPT secondary ground, stacked supplies
  250. OTL for HeaPhone

Content Relevant URLs by vBSEO 3.3.2