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 99 100 101 102 103 104 105

  1. Journey to the centre of a tube..
  2. some questions about an ECL82 SE amp
  3. Heathkit Sine/Square wave Generator Manual needed!
  4. SRPP Signal Output Capacitors
  5. simple se input impedance
  6. Kt120 screen current
  7. New or used output xformers to play around with?
  8. Magnavox amp
  9. Help hooking up panel ammeter for bias adjust
  10. opt A-440
  11. OTL Headphone amplifier with Tube ED8000
  12. NJ7P Gone?
  13. MYSTERY METAL TUBES B-1532
  14. noisy tubes
  15. Old amp hum repair
  16. Traveling with DIY Kit in USA-Airport Security Question
  17. Hammond 1650P vs 1650N For EL34 PP
  18. Calibrate a Hickok 6000?
  19. Blown Output Tubes
  20. Kriesler Radiogram refurbishment questions
  21. 6P15P socket connection
  22. Revision 2. Balanced
  23. 6V6 schematic
  24. 6h23N test setting?
  25. 12AH7GT
  26. TUBE Tape Head record / playback amp....
  27. Strange couple comportament 6L6GC RCA black plates.
  28. Reduce Output Volume
  29. Differential Amp CCS Tail SVCS Plate - Noise Issues
  30. Triode curves for EL/PL519
  31. Is that a SRPP circuit with 6SN7?
  32. KT33 Push Pull
  33. Rogers Cadet III Integrated Amp Capacitor Values help
  34. 2a3 alternative after NOS burning
  35. 6SN7 SRPP - oscillating dc offset
  36. Hickok TV-2 'percent quality'
  37. Another Tube I/V converter/preamp for balanced DACs with SE output:build thread
  38. Aikido LV 48V ECC99 or 6N6p
  39. Project: Ultra Small 6C33 / Hybrid Stereo Headphone Amplifier
  40. Back to the tubes
  41. Any use for these PAECO transformer?
  42. Video lectures on tube amplifier design
  43. Millett PP or Allen Wright's PP-2c or?
  44. Magnavox 8608-10
  45. Time relay
  46. Help with Music Angel XD800MKIII mods!?
  47. Little Dot MKIII ??????
  48. Cathode follower wideband amplifier
  49. Wrong base ???
  50. My first DIY schematic... need eagle eyes.!
  51. Stubborn Noise/Oscillation - Another Call for Help
  52. help with power tranny
  53. Tube Amp Repair - SE Michigan
  54. ST 70 Power on!
  55. given choice of low screen voltage or low bias which sounds better or is it equal
  56. How many various OEM brands come from Shuguang?
  57. Bye for now! :)
  58. general power tube output impedance chart?
  59. Should I ground my ST 70?
  60. What is the biggest 300B tube? (Dimension)
  61. 6N16 Valve break-in time
  62. Mystery Amp.
  63. valves tungsten filament
  64. Musical Machine (triode PP EL34) question(s)
  65. M100 Output Tube Problem!
  66. Need to replace the power switch on an EAR 859
  67. Eico pentode vs triode VA
  68. gold grid 5881 - was I had?
  69. DN2540 CCS questions
  70. Operating point for pp KT88
  71. Low THD of Opt Cathode feedback
  72. No bias in S-5 12K, 8L, 16L, etc?
  73. Wanted...broken Golden Tube Audio SE-40
  74. Precise 116 Data Needed
  75. Can you bi-wire using two different taps
  76. Transient Responce of Williamson Amp build
  77. Tantalum caps in the filament supply?
  78. Assistance needed in reconstructing a Golden Tube Audio SE-40
  79. interesting power tube comparison chart
  80. 833A and 3-500Z Circuits
  81. Pilot SA-260 amp and Fischer 400C advice
  82. Long tailed pair phase inverter issues
  83. advice on changing bridge rectifier
  84. 21st Century Maida Regulator
  85. 6CA7 UL Push Pull Amp Design
  86. Tube recommendations anyone?
  87. WE 2C51 Date codes
  88. T500-1 - any ideas?
  89. hybrid power amp and more questions
  90. Yaqin MC-100B - not as powerful as advertised, but still a good value.
  91. 6CB5 AMP BUILD.
  92. ABB France SE OPT??
  93. heater wiring
  94. Audioromy FU29 improvement and upgrades?
  95. Need VFD display filament driver
  96. Power Transformer Limitations
  97. Yaqin 100b channel imbalance
  98. Grid stoppers in class AB2 push-pull arrangenets?
  99. Glass bead inside of KT88
  100. Find tube tester!
  101. mono block amps with 2 x 833C overkill ? even possible to DIY?
  102. happiness is a box of 6550 NOS tubes
  103. Taming the 83
  104. 6550 tube bias characters
  105. Tube Amp Squeel
  106. Bias help Music Angel L$, EL84
  107. Stubborn Oscillation
  108. Moderm "high watt" resistors seem too small
  109. Thyratron based emergency switch?
  110. vT4C.com out of business....
  111. Maggie 8802 6V6
  112. Need Counterpoint SA-3 Board Photo
  113. Diodes in a Graetz Hybrid
  114. Tube Noob with a few questions
  115. KT88 Push Pull Idea... Questions
  116. Superior Instruments tv11 restore question?
  117. Superior Instruments tv11 restore question?
  118. Frequency Response of Output Tubes
  119. symptom of a dying (gain) tube
  120. Grounding in monoblock amps
  121. Seeking 6ME5 data and connection diagram
  122. 12BK5 UL tracing gone boosted triode?
  123. Difference between OPT
  124. Tweaking PP AMP Suggestions Please
  125. DC coupled Sand 'n Glass with Current Feedback
  126. Yaqin 100B fire and spares
  127. Pls help with a preamp
  128. Questions about Aikdo all in one octal
  129. Did I get used to my amp's sound?
  130. Michaelson and Austin TVA1 revB
  131. Joy of birth - a new preamp brought to the world
  132. 5U4G
  133. 6N6P best musicality? Help with modes.
  134. Identifying this capacitor in my Cayin TA-30 amp
  135. GU50 Push-Pull version1
  136. Common mode feedback
  137. Stuck with repair ;(
  138. active hum cancellation. PCB idea?
  139. Why this huge cap is so light?
  140. OPT performance
  141. Capacitor WVDC. is higher really better?
  142. Tung Sol ECC803S reissue - thumbs down
  143. In a search for a 6CG7 line stage schematic
  144. Output stage for a Mono FM tube tuner
  145. Want to use El Cheapo P.I. for Scott LK72 rebuild
  146. Ansar caps
  147. TO220 isolation kits breakdown
  148. Schematic for Sony TC-200 tape unit
  149. HV power supply with serial chokes
  150. no logo on tube
  151. Tango XE-20-600S SE OPT for preamp ?
  152. RF Voltage Amplifier
  153. Anyone deal with psvane member here?
  154. Op Amp
  155. Imbalanced LTP using 6922/E88CC
  156. OPT choice for PP1C
  157. Drawing software for P2P layout?
  158. A hybrid amplifier with PCC88 and IRFP240/9240
  159. ARC D-75A Regulator tube
  160. cap upgrade worth it?
  161. valve/tube output transformer construction
  162. 300B (or other DHT) biasing options
  163. Cathode Bypass Capacitor concern
  164. Phase splitter into push pull front end - possible?
  165. Question on push-pull OT LEads
  166. Importance of Screen Voltage of Pentode???
  167. measuring dc offset in OTL headphone amp
  168. Seeking comments on Russian KBG-MN for PS
  169. Joe List Archive
  170. grundig tk45
  171. Grid bias - sound quality of battery or PSU?
  172. Help: Western Electric 418A tubes wire in triode ?
  173. Scott 355 Tuner-Preamp
  174. 6550 internal resistance hit parade
  175. Max anode voltage and srpp/aikido amps
  176. Effect of IERC coolers on SQ
  177. Tube standoff ?
  178. YAQIN MS-650B vs Yarland PRO 845 mkIV ?
  179. New Harman Kardon Citation II
  180. Conrad johnson Preamp Volume
  181. What's the benefit of dual NFB?
  182. Over-Spec'd PT as replacement.
  183. pp KT88, IT phase splitter
  184. ID this for me?
  185. 12AX7 in starving mode Dynaco PAS3X
  186. YAQIN MS-22B. Any thoughts, please?
  187. Heathkit A7E phono section
  188. Dyna-Quik 500
  189. Driving balanced outputs
  190. Primary current feedback - any good? Help!
  191. 3C30 tube...datasheet...help !!!
  192. LEDs on input valve cathodes
  193. Help with Conrad Johnson
  194. Output Transformer Power Rating Question
  195. Little piece of glass in tube.
  196. ASL Preamp Help
  197. Start to Salivate - My Tube Amp Candidates - Your thoughts welcome
  198. Citation V OPT Diagnosis/Question...
  199. Cossor BT185 Beam tetrode
  200. Using a non-bridge (2 diode) full wave rectifier in bias supply.
  201. Amp making phase shifter noise
  202. Help, Amp distortion after on/off/on???
  203. TDO 5w resistors?
  204. Audio Research Dual 75 - Low Bias
  205. 6N3 SRPP + 6N5P Cathode Follower HPA Testing
  206. 6N16 headphone amplifier
  207. 5k plate to plate, el34 triode strapped, 400v b+
  208. russian penthodes 6J2P-EB and 6J9P.
  209. mA meter drags the circuit down
  210. Valve stage coupling capacitor leakage?
  211. Carvin Transformer
  212. Modifying the Lowther Club HK Jazz 6L6 ($449 SET amp)
  213. RCA 6V6PP amp schematic (Schade fb)
  214. 25W Class A Hybrid Amp
  215. help testing gz32 gz34
  216. A BeamKido?
  217. Zeners and voltage regulation
  218. A2 positive bias push pull possible?
  219. EL34 burn out on Yaqin MC10T
  220. input transformer and impedance question
  221. Options for 300mA tube rectifiers
  222. Electrical flow
  223. 5AR4 @ 250mA
  224. newbie with a choke question
  225. ROCKOAL JUKEBOX 1458
  226. Who can help to recognize this tube preamp?
  227. DIY High power Audio Amplifier from Heathkit SB200
  228. ECL82 amplifier help
  229. 6146B SPICE model wanted
  230. how to install a bias meter in a cathode bias amp
  231. Stuck... Output tube for Single ended?
  232. Aikido Octal Headphone amp
  233. Impedance bridging
  234. Philips AG-9016 frequency range?
  235. fuse voltage rating?
  236. Grounding issue between turntable and tube amp
  237. Great sounding KT88 amp?
  238. Designing a Gomes i/v stage for tda1541a
  239. choke input power supply
  240. Need Help with New Amp Build, Ugly signals
  241. Amplifier Saftey
  242. Cary SLM100 question (older brand)
  243. 6n18p 6n1p 6n2p project needed
  244. Heater wiring idea?
  245. 300B Amp Testing
  246. New amp build
  247. Bamboo chassis 6P3P SE
  248. 6N23P-EB SRPP DAC output stage.
  249. Packard Plamor Schematic needed
  250. Hickok 600A

Content Relevant URLs by vBSEO 3.3.2