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. Thoughts on bias for PPP
  2. 2012's Acquired Parts- ..Custom Build Anyone?
  3. Can I use a variable voltage cieling fan switch as a variac?
  4. Audio research LS2 hiss and hum... need help
  5. saba electro sound
  6. Ra on C3g and 6C45pi?
  7. Partial Feedback System
  8. An Electronic Loss Compressor
  9. K-12g one channel louder than the other
  10. Sun SV2a3 or 45?
  11. Red imP(asse)
  12. An application of C-Vac: the SolidGlass amplifier
  13. Fixing crooked laminate stacks?
  14. EF184 driver
  15. Woo Audio WA7 temperature
  16. Resistor w/cap or LED or battery bias?
  17. Transformers Back to back vs. Voltage Doubler
  18. 211: 75W or 100W?
  19. Does really need a balanced preamp ?
  20. Power Transformer Hum
  21. Options for how to use this old tube PA amp? > 200W
  22. Flash getter question
  23. Heath W4 Output Xfmr - anyone measure one??
  24. Tube buffer with 6n3-EV
  25. First time with hi-fi, need some advise with amp desing
  26. Newbie wants to build SET 6C33C
  27. Another PP GU50
  28. SE Waveform
  29. Problem with CCS for filaments
  30. UL / Distributed Load - Screen vs. CFB Winding Ratios
  31. 50W PP - KT88 Build
  32. OP Tx and PPP to PP change over
  33. I need a little more advice on a Glassware Janus shunt regularor
  34. Pentode noise
  35. Dynaco ST-35 Circuits
  36. BIG Transformer Covers - Where to Find?
  37. Amplification breaks up after some time
  38. 6A5G schematic; changes from the 6Y6G tube
  39. ECC83 differential preamp optimisation
  40. 6Y6G SE SCHEMATIC NEEDING HELP!
  41. Need help identifying this tube...
  42. AMI DD project. Someone did some mods before me and I don't know whats what.
  43. (v?)Tailor PA-500 Tube Amp
  44. Transformer arrangement?
  45. Don't be stupid, you can't possibly do that with output transformers?
  46. Maximum Plate/Screen Voltage 6550 in UL
  47. Paper insulation for output transformers?
  48. Best PP OPT 30-100W range
  49. Tripath TA2020 + 6N3 Tube buffer
  50. El34 as triode
  51. tube preamp vol ctrl -- before or after?
  52. matisse preamp -review
  53. Ribbon Microphone Preamp
  54. Looking for tubes 6CL8 pentode Triode with lower output ratings
  55. Reducing Signal Level Without Affecting Tone
  56. VTVM/VOM???
  57. Micro amp - all-tube, direct heated, portable and IT FITS
  58. Wiring a 6AS7G to be Push Pull within its own envelope
  59. Wima MKP
  60. Will this circuit work ?
  61. new amp build
  62. Looking for ECC81
  63. Unison Research S6 (old version) auto or fixed bias?
  64. Troubleshooting a restored Edison 12 valve amplifier
  65. Counterpoint SA-220
  66. LTSpice models needed
  67. Magnavox 6V6 amp upgrade
  68. breadboard for tubes
  69. Looking for ideas... 50W OPTs
  70. SE Power Supply PCB
  71. Speakers for the 16LS Stereo Tube Amplifier
  72. will E80CF fit into yaqin 100b
  73. RH84 Rev2 Build w/Premium parts
  74. Single ended KT88 / 6SN7 not enough power
  75. Problem with push-pull KT88
  76. opinions please!
  77. Tube testing 101?
  78. Top aluminum plate from ProtoPanel.com
  79. 6GK5/300B
  80. Screen driven sweep tubes - the return of the evil kink?
  81. Parafeed 45 amps
  82. Has anyone tried the 6p1p EV?
  83. ECC88 mu-follower
  84. Reducing gain of a WE91 type amp
  85. 6sn7 mu-follower
  86. AES Preamp mods
  87. Oh! Darling
  88. Has anyone ever used the 6C41C in PP?
  89. RH 6V6
  90. Unholtz-Dickie amp, 4-1000's
  91. Somewhat Newbie..
  92. grounding RCA inputs
  93. ESS9018 I/V
  94. Catode follower with 6N7S (6n7GT)
  95. Recommended RIAA Values for this Circuit
  96. PC board design for PSE amp
  97. Audio Research SP-11 HV Regulator
  98. heathkit SA2
  99. russian 1578 tube production years
  100. partial list of tubes I have
  101. Bench Power Supply Questions ?
  102. Identify this tube?
  103. your input - bulb / led / neon selection for short tester
  104. Potted choke orientation/amp layout
  105. Tamura F-2012
  106. Joining output windings
  107. 5687 LTSpice model needed
  108. Can you identify this transformer? 70V line matching?
  109. I had to post this..the 211 in all its glory!
  110. Help with preamp/driver/output setup
  111. Accident - Shorted Cathode to grid!!
  112. Correct B+ for EL84 UL PP
  113. RH807 output transformer....what did you use?
  114. Headphone tube amp with balanced output?
  115. Tube buffer with 6n1p-EV
  116. First little SE
  117. ID Nice Unknown Tube
  118. Bell and Howell Model-601
  119. what should my mulit reader be on to bias yaqin 100b
  120. Fixing an old Tandberg Huldra 6 Radio
  121. 30W sweep tube amp
  122. Atmosphère S-40 with KT88, does someone know about this amp?
  123. What happens when Output transformer max voltage (slightly) exceeded?
  124. what type is the best?
  125. Kiwame carbon resistors
  126. Rocker Switch Wiring
  127. RH6550
  128. Diodes for Marantz 8B
  129. Diodes for Marantz 8B
  130. Telefunken 2430 Opus Resistor Burnout
  131. yaqin 100b with 2 different kt88 valves 2 are Genelex Gold Lion and 2 are Svetlena wi
  132. Conrad Johnson MV40 copy and Fisher OP's
  133. Are EF86 Tubes inherently microphonic?
  134. Counterpoint SA-1000 Hum in left channel Pinging Anatech!
  135. Need a rectifier tube...
  136. Looking for Harman Kardon Allegro A-10 Schematic or PhotoFact.
  137. How much spl can a triode take?
  138. Octal CCDA kit - help needed!
  139. Mod input of 6AU6/6AQ5 amp for iPod
  140. Put a tube on your PC just for fun..
  141. ST35 Cathode Feedback
  142. Series Shunt tube regulator
  143. Help ID this tube ^&$**@# lettering!
  144. Adding a db VU meter to an existing tube mic pre
  145. Quad 22 interstage cap?
  146. 4P1L triode PP (40W!!?)
  147. KT88 shootout vintage vs new vs 90
  148. Help needed to identify this british made Amp
  149. PSU II Question
  150. Quality tube buffer with ECC83
  151. K12g Amp Question
  152. output transfo problem
  153. Pair of Fisher CA-40 Oddballs
  154. Model 601 tube amp.
  155. Model 601 Tube amp
  156. First power amp build. Is this normal??
  157. Compactronized 6146
  158. Preamp and inverter on B7G base tubes circuit.
  159. Advice and Suggestions on Amp designs
  160. Help who tube buffer x10-d
  161. EL803S-6CW5 / EL86 amp design check (schematic attached)
  162. amp buzz in one channel on inrush / power on
  163. SE 8-10W monoblock build help
  164. GlassWare Tube CAD
  165. SMD Parts and the DIYer
  166. 6CW5 / EL86 operating point
  167. RH84 power output
  168. 6n6p-ir
  169. Transformer bubbling
  170. Crackling noise.... pls help on Pre-amp
  171. RH84 amp. Plate is 300V. What voltage...
  172. Amplificator Class A 2 X EL504
  173. Help in testing 12ax7 and 7869 tubes
  174. Micro-Cap Tubes Parameters question
  175. Cathode Bypass Capacitor
  176. NOOB ALERT! sooo omany questions.....
  177. IS THIS A REAL E810F ???
  178. Chassis design question / cooling of small signal valves
  179. 5 leads pp output transformer
  180. Vote and Comment: SRPP vs. Aikido vs. Grounded Grid
  181. NEED ADVICE ON THIS SCHEMATIC AND WILL IT WOFK
  182. Help Identifying a Console Pull Amplifier
  183. sunaudio 2A3 circuit...is it good for newbie?
  184. KT120: When does it starts to sing ?
  185. Simple Time Delay (no more excuses for not having one)
  186. Cary SLP-05
  187. 6SN7 Grounded Grid
  188. input selector switch replacement help
  189. help needed with transformer wiring
  190. Tube Schematic Drawig Packages
  191. 12AU7 - 5V4G easy amplifier
  192. Glassware CCA 9-pin PDF
  193. Replacement for the tube 6922 (ECC88)?
  194. Which probes for my first scope?
  195. PP CATHODE BIAS WITH "CCS"
  196. current output tube amplifier
  197. Tube amp for a small room (newbie-like)
  198. What is this old thing from1929?
  199. Arduino cathode current HT etc
  200. Bizzare Output Transformer Connectivity...
  201. OPT to KT88?
  202. Help needed on identifing tube
  203. Amplifier circuit from tube radio
  204. Amplifier circuit from tube radio
  205. Using Valves Library in EAGLE CAD
  206. Biggest noval power pentode?
  207. Akita 12V preamp thoughts
  208. Help, what is this (Marconi 6204) ?
  209. Anyone try DHT 33 or 1Q5 Pentodes wired as Triode?
  210. Would this be a good buy?
  211. Looking for a complete DIY Tube amp
  212. Schematic by TS LIM Pre-amp
  213. Fisher Model 100 'AZ' Mono Amp Rebuild w/ Oscillations
  214. Measuring inductance
  215. Leak stereo 20
  216. Gain and gm of a QQE03/20 anyone ??
  217. Power supply options for tube amplifiers.
  218. CCS question mA
  219. Help wanted with testing and finetuning.
  220. YAQIN VK2100 pre amp
  221. Identify record player and valve
  222. AC Line Filter
  223. blue flash inside 5Y3GT
  224. Heater-Cathode Leakage
  225. Old Tube Kit
  226. Point to Point SET KT88/6550 Build
  227. D3a - MOSFET HYBRID CIRCLOTRON
  228. Aikido CCDA
  229. output impedance
  230. Bizzaro fix for hum problem needs explanation! Pretty Please
  231. Bizzaro fix for hum problem needs explanation! Pretty Please
  232. Questions regarding first build - K-502
  233. Good tube tech in Brooklyn NYC?
  234. Looking for LTspice tube models
  235. Audio Research SP15 : faulty phono stage
  236. Spark 810 looking for the diagram
  237. HP 8903B Question ?
  238. 1955 Hammond Organ Tube Amp
  239. Suggestions Please
  240. Croft Series 4 PL519 regulator
  241. Rectifier ID
  242. Adding headphone output to Darling amp
  243. CLC vs CLCLC Filter Power Supply
  244. Where to get Vacuum Tube Valley magazine?
  245. Magnavox 8802 HELP!!!
  246. Vaa for KT120
  247. Tubes in a Home Theater?
  248. Yaqin mc 10l tube risers?
  249. Wiring an LED strip into an amp?
  250. Need a bit more power :)

Content Relevant URLs by vBSEO 3.3.2