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

  1. Heater soft start for series-connected preamp valves
  2. low/no gain follower
  3. Data for 6BD2A or 6BD2
  4. isolation test
  5. Western Electric 437A preamp
  6. solid-state rectrification
  7. Class AB
  8. push-pull
  9. Need help ID tango-lookalike transformers
  10. TV Valves blast from the past..
  11. Tubes suggestions for parafeed headphones amp ?
  12. CCS Loadline
  13. Universal pover supply for ECC85 EL84
  14. Conversion Project
  15. Dynaco PAS I/O PCB Grounding
  16. CCS for anode load
  17. OTL Power Supply: Halfwave vs Virtual Ground
  18. Can NOS tubes have emission staining on the glass?
  19. Pentode pre/compressor (warning nube attempt at circuit drafting) --suppressor grid
  20. Capacitor Drain for Tube Bench Power Supply ?
  21. Diodes, diodes, diodes...
  22. Grid leak resistors and dc-coupling
  23. Output transformer at speaker?
  24. Newbie just wondering if this PP amp looks ok
  25. 6P36S push pull HiFi amp
  26. Another Output Transformer Wiring Question
  27. Cathode bias for EL84 PPP
  28. Output Transformer Wiring Question
  29. NJ7P Tube Database
  30. solving my old radiogram sound issues - help
  31. 6H9c Idle Current.
  32. 12E1 SE amp suggestions.
  33. Direct Coupled Output Stage, DC Bias Balance
  34. Pre-amp tube suggestions for 2A3 output tube
  35. AirTight ATM-1 Schematic
  36. Counterpoint SA 5000 Service manual and PSU
  37. Rectifier tube ? - Berman 76 preamp
  38. Cathode feedback (SE amp)
  39. Will anybody interest in stamp size ccs module?
  40. Fairchild voltage questions
  41. Help with a Sylvania 7695 Project
  42. Flicker Noise dominates triode noise in audio (AES)
  43. A tube for SE with 1k-1k5 load
  44. scott stereomaster 233 restoration
  45. Homebrew Dynaco MkIII Problems - PLEASE HELP!
  46. What to do with C3g tubes
  47. Can anyone ID an output transformer's part number?
  48. Nestorovic NA-1 & Alpha-1 Schematics
  49. Data for 6BD2
  50. Ken Shindo R.I.P
  51. HiFi 6n9p EL34 B + 5z3p Class A Tube valve amplifier
  52. Seas Trym with SE KT88 amplifier?
  53. 845-Amp-IT-Coupled
  54. Data for 6RA3
  55. Miniwatt N3 not turning on!
  56. I need ideas on a can capacitor
  57. Help with tube for power supply...
  58. AVC vs TVC for 10y line preamp
  59. help needed with Lumley 120 monoblocks + Sonus Fabre speakers
  60. help on 845 amp
  61. High voltage power tube question
  62. Tribute OPT for PSE 300B
  63. Floating Paraphase.
  64. 6Q7G as driver in RH807
  65. Custom tubes4hifi m-125 monoblocks
  66. Antique Audio Preamlifier made in USA
  67. directly heated tube rectifiers
  68. Biasing a 12EA6 low voltage pentode
  69. Power supply doubt
  70. Vinyl Savor's Octal 6GL7 preamp?
  71. 837 tube
  72. Tone control bypass (Kontakt KT-7)
  73. drdwers
  74. Amplifier Sensitivity?
  75. identify nickel laminations
  76. Recapping Vintage EL84 amp
  77. opinion on dynaco mark VI
  78. How can i have 450 Volts ?
  79. Balanced Preamp
  80. ecc99-300b
  81. Question about the tube specs/testing?
  82. Transformer Winding Configuration, Hafler 2,815,402
  83. PSU with SS Choke for Loftin-White 2a3.
  84. HP 8903 Pete Millet's Software on Window 8 ?
  85. Cathode Destruction
  86. Earth SuperBass B-2000 bass head info needed
  87. More radio shack dissapointment
  88. What to do with transformer secondary when used as a choke?
  89. Slight transformer buzzing in Engineers Amp
  90. Couple Gyrator Questions
  91. Shishido/Loftin-White 2A3/45 Extasy..
  92. When is a tube not a Valve?
  93. Relay Recommendataion
  94. 6080 monotriod amplifier
  95. Tetra Sans PS Phono Stage Power Supply
  96. transformer test
  97. Could someone tell me more about the Mesa Boogie Strategy 400?
  98. New OTL headphone project with EC88 and 6080
  99. Philips Tube Code
  100. Edcor GXPP vs. CXPP
  101. Shorting or Non-Shorting Rotary Switch: Hi-Low Z tube headphone amp
  102. Marshall Guitar Conversion 12AX7 Replacement
  103. affordable potted power transformer?
  104. Am I pushing the envelope too far? Layout concerns.
  105. Pete Millet's Uniamp
  106. 6211 for???
  107. Picking an output transformer: power vs. sound quality
  108. Tube emulation with transistors
  109. Altec 1570b Tube Swap
  110. Popping stepped attenuator
  111. 6922 driver/cathodyne - direct coupled
  112. Solid state rectifier with these tubes
  113. Need advice -- Improving an old tube amp
  114. KT88 SE developed a buzz
  115. Guidance on amp design
  116. OTL3 Autograph Series
  117. DAC Tube i/v help!
  118. Need help figuring out a tube amp!
  119. Parallel 12AT7 output stage design?
  120. 6SN7 SRPP
  121. Problem Bi-Amping
  122. Amplifier recommendation
  123. DIY tube amplifier got no sound but all tubes are fired up.
  124. Circuit for Melos 333
  125. DHT Tube regulated power supply
  126. Akai M8 Restoration, newbie questions
  127. Bench Power Supply - what to get?
  128. Telefunken RS241 Design Help
  129. Telefunken Hymnus 5328 MX console
  130. Some Dummy DHT Questions
  131. Inductance loading tube stage questions
  132. Simple tube kit for tube sound ?
  133. Voltage Divider with Capacitor Across Resistor to Ground
  134. FM Demodulator for Tube receivers
  135. The best amp to DIY?
  136. SE Tubelab / EL34b tubes / Transformers
  137. Heath Kit Pre Amp
  138. Preamp hiss noise
  139. Tube preamp?
  140. 417a load line
  141. 6N1 + 6P3P build, need some help.
  142. Caps connected in series in Audio Note kit 4
  143. Ground loop cure?
  144. Dynaco ST-70 Clone
  145. Op Amp Phase Splitter
  146. Idea for ECC85 or EM84?
  147. Why no sound?
  148. single ended tube amp sounds itself
  149. Proper Pentode Usage 717A (713A)
  150. Help with Mullard 5 20 project
  151. Help on Negative Feedback in KT66 PP
  152. Trying to understand 6BM8 regulator (audio note clone)
  153. 6AS7 headphone amp with Sophia Electric Mesh plate 274B rec. tube
  154. CR Kalypso Amp with output stage problem- Please help!
  155. "PEAK INPUT SIGNAL GRID-TO-GRID" question.
  156. EZ81 Load
  157. Rectifier question
  158. 6sn7-300b
  159. Balanced tube phono stage
  160. Your favorite 12B4A for a preamp ?
  161. Voltage rating for output coupling caps in 6J1 tube buffer?
  162. Single stage 845 amp
  163. Eagle tube library
  164. Using Choke in Choke Input Power Supply ?
  165. 6550 wrong high bias...
  166. Floating Bridged CCS Loaded P-P Tube Amp
  167. What to do with a problem Counterpoint SA-12
  168. 6Z9P Mu Stage max anode-cathode voltage
  169. Audio Innovations Series 500 parts
  170. Hagerman Trumpet phonostage
  171. PS design...success or failure?
  172. Kuba Serenade Stereo Console - Part III - Replacing all caps
  173. schematic of Knight KP-70 preamp or anyone having this amp?
  174. 6N6P Cathode Follower design value
  175. Radiotron 32W PP amp from RDH3
  176. Heater filament questions
  177. 46 in ultralinear mode
  178. help needed need transformer prim 230/110 sec 300v appr. 20ma +6,3v or 12,6v
  179. Output transformer confusion
  180. need amp schematic help
  181. reviving an old Randall RGT100
  182. lm317 and heater supply.
  183. BJT Voltage Bootstrap - SLCF
  184. Ideas for a cheap 200mA tube rectified PSU
  185. Need help with tube rectifier
  186. Tube or Circuit Noise?
  187. JE Labs (Angela instr.) : your favorite 2A3 schematic ?
  188. Crack the Code Amp build 1000 Watt Tube Amplifier
  189. 12E1 in fixed bias - too much current!
  190. CD-DVD player vs Notebook-usb soundcard sensitivity issue
  191. photo of Knight KP-70 preamplifier for missing component
  192. heater wear sign?
  193. Musical Fidelty X-10D Clone
  194. 815 amp
  195. Jorgen Schou 31,5 OT connection
  196. Is there such a thing....
  197. Tube Rectifiers and Common Grounds
  198. vt4c.com copper tube socket mounts
  199. 1 Ohm Tap Output tranformers?
  200. Voltage Specs For Heaters-Is 2.4V Good Enough?
  201. Aikido with 5842
  202. Luxman MQ70
  203. Valve pre-amp schematic help needed
  204. valves' world - tossie Japan
  205. 211 amp , recognize the circuit?
  206. Tube Preamp: Remedy For Digital Glare?
  207. Tubelab SSE without tube rectifier
  208. Counterpoint 7A
  209. Low Z Out Dual Triode
  210. Push Pull circuit - controlling sensitivity
  211. Moto 3 channel to Maggy 175
  212. PMillett Landfall heatsink
  213. lower the gain
  214. KT88?
  215. Sphinx Project Fourteen help wanted
  216. will this work and looking for suggestions
  217. Squeal on shutdown
  218. Newbie to SRPP and Tubes , 1 question.
  219. Question about interconnect transformers
  220. another toy - el84 PP class A
  221. Problem with biasing - no voltage drop on a cathode resistor
  222. EL84 PP current fluctuating
  223. Aikido Preamp Questions (again)
  224. Amp caused crack
  225. OPT performances
  226. Hammond 125ESE in 2A3 SE : better substitutions ?
  227. Headphone Impedance and headphone amplifier
  228. Could this tube be good for audio ?
  229. Output Transformer for SE / headphone amp
  230. pioneer sm-b200a
  231. 12AT7 Tubes ?
  232. Gold Lion kt77 bias help?
  233. Need some bias control help
  234. Lafayette LA-224a/b modernization?
  235. Need help completing vintage 6L6 amp
  236. Direct Russian equivilent for 5687, is there one ?
  237. Attenuation for 0.5dBs
  238. Dynaco ST-120 Impedance Concern Martin Logan
  239. Some 1626 Darling Amp Questions
  240. Choosing a SE 2A3 shematic : hum as a criteria...
  241. Rectifier question, voltage across diode.
  242. Angela simple 2A3
  243. Cathode follower - resistor calculations/software
  244. Desperately Seeking OPT Covers
  245. Modified Tube Cricket Amp Questions
  246. Best sounding DIY amp kits for 45, 2A3 or 300B
  247. Pentode's screen voltage/current
  248. KT88 Cathode Current Runaway/Oscillations?
  249. O'netics, Electra Print: anyone have both?
  250. How to maximize power transfer in tube circuit designs, damping is not the question!

Content Relevant URLs by vBSEO 3.3.2