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

  1. Switching on an old amplifier?
  2. elevated filament voltages
  3. Opinnions on Gold Lion KT77
  4. DIY Tube amplifier, Transformer question.
  5. Pro reverb AA165 circuit low output from vibrato channel
  6. EF42 for audio applications
  7. strange Tungsram tube
  8. Schematics TVA Mentmore M100 M200
  9. A Thordarson amp project
  10. Help: Tubes for my amp
  11. McIntosh mc40 power transformer
  12. Counterpoint SA-1 preamp schematics?
  13. What would a larger OPT get me?
  14. National VP-311C Tubescope help...
  15. 12AU7 - 12.6V DC heater wiring - noob
  16. I bought a box of tubes at an estate sale today
  17. Thermistors to prevent heater current inrush?
  18. can SE bass be as good as PP ?
  19. 2A3 cathode resistor/cap question
  20. class a output ct basic question
  21. Recent popularity of Leak TL-12
  22. bleeder resistor placement w/ power supply choke
  23. cd burner hum w tube stereo
  24. Clipping - Saturation or Mismatching Impedance?
  25. Transformer for K12g tube amp
  26. PowerTrannyHeatRemovalViaHeatSinkRadiatorPassive
  27. "Novel" push pull driver circuit
  28. Feedback lead/lag compensation
  29. ASC Metal Polypropylene Caps
  30. help with Signature Technology mono amp
  31. 7591
  32. EL34 integrated amp power loss
  33. Use treble or bass amp for midrange?
  34. Question about a SET 2A3/45
  35. western electric 124 amplifier
  36. el34 power loss in right channel
  37. Ei Silver Plate 12AX7 cathode color ?
  38. Does parafeed really improve sound?
  39. Can I use this choke
  40. Calculating 6922/E88CC/ECC88 cathode follower for 90V anode
  41. ST70 coupling caps eyelet location on PC-3?
  42. Some help with PCL86 Headphone amp Project
  43. Top (sound) quality valve phono stage
  44. Calculating cathode follower using 12AU7 for 90V supply
  45. Cathode resistor
  46. Help with an old Capitol
  47. Cathode bypass cap
  48. balanced post-OT line output?
  49. Blown SE mono, troubleshoot
  50. What is this circuit for?
  51. Siemens EL 86 NOS?
  52. Valve Operational Amplifiers
  53. What will be the best drive to 211 tube?
  54. Dual 845 SE A2 questions
  55. Harman Kardon Citation I, II, & III (Special thanks to Jim McShane and Eli Duttman!)
  56. Heater rewiring from 6N2 to 12AX7 with 6.3VAC
  57. heater bias value
  58. the hum or is it a siliconray kit
  59. DC Automatic Bias Control - Auto fixed bias
  60. What makes an OT a good OT for audiophile and need suggestion.
  61. The totally capless DHT SET amp - 300B or others
  62. Angled Socket brackets?
  63. Octal or loctal tubes as cathode follower?
  64. Used int amp please help to figured out?
  65. Rod Coleman heat sink question
  66. Tubelab SE + Fostex fe206en vs room size! suggestions needed please!
  67. ef86 pentode/triode switch: voltage rating?
  68. Input to pre-amp
  69. EML 300B
  70. Need suggestion in building a stereo power amp
  71. VALVO EL84 and ECC83 TELEFUNKEN ID?
  72. Bogen E-75 tube amp
  73. Quad II amplifier needed for parts
  74. Low voltage 6N1P RIAA?
  75. Does anybody collect vacuum tube ADV
  76. HDMI connection causes hum on Quad 303
  77. ECC81/12AT7 "sweet spot"
  78. Phono Preamp Hum
  79. Benefits of high voltage source for preamp
  80. Auto Bias
  81. Thomas Mayer Sound Processor pics
  82. Have you used the 15A6 pentode as an audio output tube ?
  83. Can I use a 5 volts tap for 6SN7 heaters?
  84. Any opinions about this tube amp kit ?
  85. 300B odd behaviour
  86. Aikido starter help requested
  87. 10Y FILAMENT VOLTAGE MARGIN
  88. Wiring a multitap transformer. Help needed
  89. A directly heated pentode folded cascode
  90. Zener Power Supply Clamp
  91. SPICE Simulator Giving Negative Gain
  92. SE 811 amp schematic...
  93. Philco Labled 12AU7A black-plate 45' halo getter- Raytheon??
  94. My FrankenAmp
  95. Panel Meter Install
  96. New Amp With Hum...
  97. EF184-6j51p Load by CCS or Resitor
  98. Slew rate.. Something doesn't make sense to me.
  99. HK Citation V question
  100. Modifying a tube regulator
  101. 6BG6 Push Pull Parallel Amp Build
  102. adapting a FU32 Tube amp for QQE 03/20 tubes?
  103. audio innovations 500 one channel down?
  104. Questions about found Mullard xf1's
  105. SE 6BL7
  106. Sound Valves M60 schematics needed
  107. el34 class a mod advice please
  108. 12AU7 Genuine or remarked
  109. MIT, Triode amp cathode resistor load line
  110. Marry tube preamplifier with 2-Band Wien bridge equalizer
  111. Oddball tube question
  112. Guitar amp screen resistor selection
  113. 6H2n-EB Strange Codes??
  114. Triode Dick's KT88 PP Amp.
  115. Curves to EL 502 and EL 300
  116. Input level 1/2 ECC83 + EL84
  117. SMPS for valve design
  118. Cincinatti Mac Amps
  119. ss rectifier filter recommendate
  120. Determining plate current with non-standard screen grid voltages
  121. allnic hpa-5000
  122. Hodgepodge build
  123. Power Transformer weirdness/wiring problem
  124. Question trafo for Broskie Janus PSU
  125. Copland CVA-306 tube and output capacitor replacement
  126. Choice of Output Transformer
  127. Jumping in with both feet
  128. Large 9pin socket needed
  129. Line-up of old and currently produced RIAA Stages with tubes wanted (like EAR-834)
  130. Question about 6P31S
  131. 6N16B Aikido Cathode Resistors
  132. 1KV umbilical cords.... and other HV issues
  133. 300b Bewitch Amp Blows Fuses
  134. Dynaco ST-70
  135. Front-end topologies for PP
  136. tranformers
  137. How many LesBox units exist out there?
  138. Old Sylvania black-plate bent getter 12au7s
  139. Phono / pre amp section schematic suggestions
  140. 4P1L in parallel Single Ended
  141. Pair of Ampex 620 amps
  142. My SE 6S4S
  143. chinese ebay 12au7 + 6dj8 white cathode follower preamp boards?
  144. "chirp" when power up amplifier
  145. Modified Dynaco PAS Phono
  146. Filter Chokes wired for CMR
  147. Capacitors / K12G Tube Amp
  148. Sansui SM-30
  149. RCA Phono Preamplifier with 12ax7
  150. separate filament transformer for 5u4g?
  151. EL34 Triode strapped amplifier
  152. Testing emission without risk
  153. Anyone Build the Borbely 15W 6C33C SE?
  154. Cheap and upgradable preamp
  155. Source for least expensive tubes.
  156. 5 Pin Tube Socket Suggestions Please
  157. UXCV-11 plates?
  158. Top 5 Most Popular Tube Base
  159. 6C33C and Computer PSU
  160. Output transformer impedance for a 4P1L PSE
  161. Specs of old output transformer
  162. altec 1570b
  163. Mixed tube and ss stages grounding. Best practice?
  164. Any news from Tribute?
  165. What are this....a tube or lamp or etc?
  166. duff tube? Little Bear P1
  167. Opinion on amp build
  168. K12G For Mom & Dad
  169. RIAA Network Position
  170. 6k5GT - Good Tube Curves?
  171. 5902 pentode datasheet confusion
  172. Hum in one channel on Headphone Amp
  173. KT24 datasheet, help !!!
  174. Chicago Standard Transformer Company OPT's
  175. Help on repairing messed up AMC CVT3030
  176. Anyone traced triode curves for the 6CZ5?
  177. anthem pre-1
  178. split supply for tubes
  179. Rufus p. Turner AC-DC amp
  180. 1937 Philco Radio Amp - Build Thread
  181. Transformers for valve headphone amps
  182. Help with negative feedback
  183. Silicon Diode Measurement Confusion
  184. grommet against vibrations
  185. Help with a Moscode 300
  186. Help Identifying Valve Amplifier
  187. capacitors
  188. Questions about console parts salvaging
  189. Regarding EDCOR Transformer Data
  190. PYE mozart
  191. Tube swapping with my Condensor Mic
  192. found amp - identity unknown
  193. how to low the gain
  194. VTL TL-2 tube preamp
  195. Need Advice for Bi-amping
  196. Baldwin organ amp
  197. Octal Aikido with gain/buffer switch?
  198. Harman Kardon Stereo Tube Amp Oscillator Help!
  199. Electro-Harmonex 6973 Question
  200. Power and plate current in a SE amp
  201. 6883B for use as a audio output tube
  202. "Distortionless" Tube Oscillator -Cutting Edge Technology
  203. Feedback RH84 6v6
  204. copper wire from socket bolts to exhaust tip?
  205. What KT88 brands can handle high B+ triode connected?
  206. Williamson-style circuit with Schade feedback using pentode driver stage?
  207. potentiometer for blackface deluxe reverb
  208. GM70 tube copper vs graphite plate???
  209. +/-floating tube PSU for guitar ?! Schematic error ?
  210. About Dark Heater Tubes.
  211. Sylvania 5692 Black base tubes
  212. Tube Tester in Montreal
  213. tubelab.com's super tube SE
  214. Unsual use of triode?
  215. What the hell is Class A3 ?
  216. High voltage triodes (true triodes)
  217. Ceramic Filter Selection
  218. Eagle library for CMC teflon 9-pin tube socket?
  219. Power supply mosfet vs choke filter
  220. Capacitors used in Conrad Johnson PV7
  221. HH Scott 299A center out to subwoofer
  222. PP Amplifier Advice Sought: EL34/KT88 UL/Triode
  223. Search for StepUp 12V->142V @ 6mA
  224. Magnavox 8802 upgrade suggestions?
  225. filament supply using two bridges
  226. 6N2P-EV gain factor ??
  227. Talking tube replacements
  228. Audi Institute VR70E amp
  229. Share Fixed Bias using Diodes
  230. Finished my Tube DI/Preamp
  231. Arcturus Blue Tubes
  232. share your experience on sound of hybrid amps
  233. ideas for a simple ECL82/86 p-p amp?
  234. Tube replacements or substitution
  235. 12ax7 / 12au7
  236. Triode/Pentode Loadline Calculator
  237. Troubleshooting a Fender Champion 600
  238. High Voltage Derived Bias Supply
  239. Universal hybrid triode-mosfet input/drive stage
  240. IT coupled 1624 or 807 amp
  241. Raytheon / Western Electric JW-5755 / 420A
  242. Calculate unknown operating point from known cathode resistor
  243. 5763 triode curves
  244. HICKOK 539a QUESTION
  245. Constant current heaters
  246. max G2 voltage 1624 tube (Tabor)
  247. Need reference for Dynaco MKIV amp build
  248. Biasing Valve on Bipolar Power Supply
  249. Tubelab sse choke input 6v6
  250. $1800 tube amp

Content Relevant URLs by vBSEO 3.3.2