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

  1. Ultrasonic Cleaning??????
  2. The daunting world of tubes (where to start)
  3. help 124.3 vac
  4. Bat VK3i buzzing noise
  5. Audioromy FU13 (813) diagram and mods
  6. any complete schematic for 6ak5?
  7. Weird fuzz from Aikido Pre, HELP!
  8. Question about tube amplifier.
  9. 811a rating question
  10. Anode chokes DIY?
  11. EI laminations in Europe
  12. Needed: transformer core materials cobalt nickel
  13. Anybody from Italy - please help
  14. Bogen AP35 amp problem
  15. Question about a VR screen supply
  16. DIY Amp Contest in Japan
  17. Hot 5AR4/GZ34 arcing on powerup surge?
  18. Rh84 Ptx
  19. Buzz. Grounding-related?
  20. 50/60Hz Hum - Your Expert Opinion Please
  21. Static Gm test
  22. High Voltage negative regulators
  23. where do i find old tube car radio schematics?
  24. Burned Up Transformer in HiFi 6p3p Tube Amplifier
  25. capacitors
  26. Wire Types
  27. Weird EH12AY7 Problem
  28. Pot and knob compatability
  29. ECC8100 and ECC2000
  30. DHT experts, i need your help
  31. transformers
  32. Vetruvio class-A
  33. PP to balanced input
  34. KT88 AB2 Experiences
  35. Group buy pulse check for Pete Millett tube crossover PCB
  36. Calculating operating point of a DHT
  37. upgrades, mods to JADIS JA-200, JPS2 and JPS3
  38. McIntosh MC-3500 Schematic Information
  39. Use 2X SE output transformers fo 1x PP
  40. 12B4a spice model.
  41. recommended a tube amp for Celestron Studio Ditton 66's
  42. Help needed with bias circuit
  43. 220 Mega Ohm Resistor - Really
  44. How to bias DH dual triodes?
  45. Any of these tubes good for audio applications?
  46. DIY AN M7 need help !!!
  47. Need schematic for Bell 2420 amp
  48. new SimpleSE build
  49. My Citation II Rebuild
  50. KT88 cathode resistors?
  51. Dynaco ST35 boards
  52. Triode strapping a 6V6 (or any tetrode/pentode, really)
  53. ECC 83 + ELL 80 maybe?
  54. need amp suggestions please.
  55. Phase splitter which tube?
  56. WANTED: 12B4A tubes
  57. re-stacking an output transformer
  58. A directly heated triode or Pentode SE amp on a Budget
  59. Annoying high frequency ringing from my 832 tube amp
  60. 30 Amp Knobs
  61. A question about audio interconnects for the ones here with such knowledge.
  62. Hi-end GM70 amplifier with only 2 stages
  63. Paragon
  64. Simple SE with CCS and fixed bias
  65. Idea(s) for simple HV regulated psu
  66. NOS Philips "miniwatt/dario" tubes
  67. Hybrid Class D with 6n6p tubes
  68. Any ideas how to estimate VA or mA of Power Tranny
  69. 6L6 Grid resistors??
  70. HeathKit W-2: Missing Tube
  71. Edcor CXSE25-8-5K Dimensions
  72. Bias Pots
  73. Negative Feedback
  74. scott 299D output transformers?
  75. chocke anode load, please explain me..
  76. Integrated HiEnd Amp
  77. Looking for advice/tips regarding simple SE amplifer
  78. Tube amps from vintage RTR's?
  79. componet upgrade
  80. What is "AA" ?
  81. question about twin triode tubes
  82. Building a preamp - somewhat new to tubes
  83. need some guidance about tube amplifiers
  84. Blackgate FK 10000 uF ??
  85. PT failure dangers
  86. Outer foil k40y-9
  87. sansui 1000a maintenance
  88. filter cap question
  89. add UL tap for 125ese
  90. Bogen D070 Amp - HELP w/ INFO.
  91. Humming asl 2004dt wave pre amp
  92. Cany anyone supply any info. about this amplifier?
  93. Low voltage 845SE with 300B driver
  94. Cabinet Help!!!!
  95. dc heater supply help
  96. gu-29 tube
  97. LTP question
  98. Over 500V rated electrolytics?
  99. Fireplug? (inline fuse)
  100. Help! Flash-over on my amp :-(
  101. 6550 drive question
  102. 4211D Amp?
  103. Please, reccomand me about 7233 GE NOS
  104. Help! Schematic Conrad Johnson Premier 3
  105. Tubelab SE in parallel?
  106. Just an Idea?
  107. Tried this out, but needs more gain. . .
  108. EL34 Power Stage
  109. Daven Question
  110. How many rectifiers can have mesh plates?
  111. Real Quick Question!!
  112. Wattage of vintage resistors ?
  113. What is the signal path -- the red line?
  114. Hi-end definitive vacuum tube phono pre
  115. Resistors for Stepped Attenuator
  116. dual rectifier clone....
  117. Motorola Console Salvage
  118. single endedtransformer coupled 6sn7 mic preamp
  119. Brett's 12B4 schematic?
  120. insulated turret terminals
  121. Building first tube power amplifier, reccomendations?
  122. Can you use a MOSFET as a cathodyne
  123. Resolving cold midrange in 5687 circuit
  124. 829B SE Comments????
  125. Shielding and regulator location in the KTA 26 preamp
  126. Voice of music, antique or reproduction?
  127. Quick Question - Audio Note M1 or AR SP-6?
  128. Red Light District/Baby Huey (EL84 P-P) Output Iron
  129. help with PSE design
  130. Tantalum VS CC & metalfilm
  131. Rise-time question
  132. Have an odd problem with my Aikido.
  133. Weird Hybrid Splitter (equal impedances?)
  134. Tube 6550 to test
  135. Using semiconductor curvetracer for tubes...
  136. Question regarding 3rd wire grounding and safety
  137. Plate Current VS Plate Voltage Graphs
  138. Toggle Switch Contact Type and Rating
  139. Inside information on Shuguang
  140. 6N6P vs. 6N6P-I
  141. Technical Survey Paper -- Need Some Help!
  142. VOLTAGE DOUBLER : drop in current?
  143. Using genetic algorithms to optimize pentode parameters
  144. Favorite size wire for signal wiring?
  145. Any idea what this thing is?
  146. Breadboarding Poindexter's 6GK5/EL34 Music Machine
  147. anyone ever use el86/6cw5?
  148. bad 5ar4?
  149. 6DJ8 biasing question
  150. Is it worth using anything other than DHTs for preamps?
  151. Billington Export Ltd Tubes?
  152. 845SE : comments on this circuit?
  153. Tip-Restoring Vintage Pot
  154. B+ Delay - Is this a problem?
  155. Toroids in SET
  156. I have to sell my Pyramid-V prototype...
  157. Stealing a preamp
  158. OLD GOLD, or something I can dissassemble and use
  159. CF PP design
  160. Preamp Idea
  161. Metal Oxide Screen Stoppers
  162. Splitting up power supply inductance
  163. Back to Back transformers and safety ground
  164. Vintage tube tester
  165. 7 pin ECC81.
  166. 26 Driver Tube for 45 - Operating Points
  167. My New pre-amplifier£¡
  168. Echocord Super Question
  169. High quality matching panel meters?
  170. 6BY5GA question
  171. Seeking schematic for Conn organ amp
  172. Will this work as a differential stage?
  173. Tube ID and suggestions
  174. 6L6 to EL34 conversion
  175. my saturation test ??
  176. DO-35 diode inside vacuum tube ?
  177. Transformer Polarity
  178. Where to go for tube gear in Hong Kong?
  179. EL84 Shunt reg for pre-amp, 85A1?
  180. Tube Preamp Idea
  181. UTC Linear Standard High Level matching transformers
  182. Manley Compact 160w noise problem -please help
  183. D3a Experimenters Breadboard Project
  184. Dtmm
  185. Running Single Ended 6V6 in Triode Mode
  186. 6v6pp Finished
  187. Stereo Buffer with a single twin triode
  188. Anybody recognize this pentode?
  189. Original schemes of amplifiers for 45 tubes of 1920 and 1930 years?
  190. My new amplifier£_300BSE!
  191. low zout vs output transfo
  192. can't find valve art tube - and glowey tube pic
  193. Which Phono Pre???
  194. BB 1702 DAC + transformer I/V ?
  195. aikido build thread-
  196. Triode Connected 6BK5
  197. need help in building tube amplifier 10 watter
  198. Parasitic oscillations in general
  199. Help Russian tube experts.
  200. forced aircooling
  201. Dirty Cheap Vintage Pot Fix - Your Opinion Please
  202. ask jan first
  203. running 6S4S/6C4C hot .. calling widowmaker
  204. Covi Mark II OTL Help
  205. Volume pot between triodes?
  206. Series Pass Transistor for TL-783
  207. Anyone else have the new Mullard EL34's?
  208. VR tubes in single ended circuits
  209. Transformer for Tube Amps?
  210. "Magga Amp Workshop" builds again (Simple 45 Project)
  211. How to handle Reclaimed Transformers
  212. Dual supply...
  213. How much would this cost/how complicated would this be...
  214. low cost DHT hum pots vendors?
  215. Tube Buffer – question?
  216. Bogen CHB 10A questions
  217. 12B4 Preamp
  218. adding output tubes etc to pre amp
  219. primaluna dialogue 5 and fanboys?
  220. yaqin mc-100b
  221. KT88 in place of 6550?
  222. Tube manaul data sheets
  223. Need a bias supply how??
  224. Wouldn't you just love to have these!. United Electronics 211's
  225. Using single tube of Dual
  226. 21st century tube? Non-Vacuum
  227. making two minibloks for stereo
  228. Lynn Olson Raven Question
  229. Inrush current limiting heater filaments
  230. Tube amp with "meter"?
  231. lytics and choke AFTER regulator
  232. Boosing the power of your existing amp.
  233. Component ID from a 50EH5 Amp
  234. Music Angel KT88 Bridged /Bias problem
  235. Output of preamp drops when overdriven
  236. Choke load calculation...
  237. 807 SE amp schematic
  238. DC Heater Voltage
  239. Choke loading vs. SRPP
  240. Unloaded Power Transformer Current Draw/Janus-Aikido snipet
  241. Need help with tubed output for PCM1793 DAC
  242. Single ended transformer grounding question
  243. Reforming Caps with Variac
  244. First Shot at a 41 SE amp
  245. [Question] Ground Error?
  246. TOMIKO OPT-SE, any good?
  247. 6550 Williamson - Low Bass Response...
  248. Preamp design question
  249. Reading Oscilloscope Traces -For Dummies
  250. Power Supply Question

Content Relevant URLs by vBSEO 3.3.2