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. Polystyrene capacitor as coupling in output tube stages
  2. Help needed with 10M45S integration .
  3. Ultrasonic Cleaning??????
  4. The daunting world of tubes (where to start)
  5. help 124.3 vac
  6. Bat VK3i buzzing noise
  7. Audioromy FU13 (813) diagram and mods
  8. any complete schematic for 6ak5?
  9. Weird fuzz from Aikido Pre, HELP!
  10. Question about tube amplifier.
  11. 811a rating question
  12. Anode chokes DIY?
  13. EI laminations in Europe
  14. Needed: transformer core materials cobalt nickel
  15. Anybody from Italy - please help
  16. Bogen AP35 amp problem
  17. Question about a VR screen supply
  18. DIY Amp Contest in Japan
  19. Hot 5AR4/GZ34 arcing on powerup surge?
  20. Rh84 Ptx
  21. Buzz. Grounding-related?
  22. 50/60Hz Hum - Your Expert Opinion Please
  23. Static Gm test
  24. High Voltage negative regulators
  25. where do i find old tube car radio schematics?
  26. Burned Up Transformer in HiFi 6p3p Tube Amplifier
  27. capacitors
  28. Wire Types
  29. Weird EH12AY7 Problem
  30. Pot and knob compatability
  31. ECC8100 and ECC2000
  32. DHT experts, i need your help
  33. transformers
  34. Vetruvio class-A
  35. PP to balanced input
  36. KT88 AB2 Experiences
  37. Group buy pulse check for Pete Millett tube crossover PCB
  38. Calculating operating point of a DHT
  39. upgrades, mods to JADIS JA-200, JPS2 and JPS3
  40. McIntosh MC-3500 Schematic Information
  41. Use 2X SE output transformers fo 1x PP
  42. 12B4a spice model.
  43. Help identifying a capacitor
  44. recommended a tube amp for Celestron Studio Ditton 66's
  45. Help needed with bias circuit
  46. 220 Mega Ohm Resistor - Really
  47. How to bias DH dual triodes?
  48. Any of these tubes good for audio applications?
  49. DIY AN M7 need help !!!
  50. Need schematic for Bell 2420 amp
  51. new SimpleSE build
  52. My Citation II Rebuild
  53. KT88 cathode resistors?
  54. Dynaco ST35 boards
  55. Triode strapping a 6V6 (or any tetrode/pentode, really)
  56. ECC 83 + ELL 80 maybe?
  57. need amp suggestions please.
  58. Phase splitter which tube?
  59. WANTED: 12B4A tubes
  60. re-stacking an output transformer
  61. A directly heated triode or Pentode SE amp on a Budget
  62. Annoying high frequency ringing from my 832 tube amp
  63. 30 Amp Knobs
  64. A question about audio interconnects for the ones here with such knowledge.
  65. Hi-end GM70 amplifier with only 2 stages
  66. Paragon
  67. Simple SE with CCS and fixed bias
  68. Idea(s) for simple HV regulated psu
  69. NOS Philips "miniwatt/dario" tubes
  70. Hybrid Class D with 6n6p tubes
  71. Any ideas how to estimate VA or mA of Power Tranny
  72. 6L6 Grid resistors??
  73. HeathKit W-2: Missing Tube
  74. Edcor CXSE25-8-5K Dimensions
  75. Bias Pots
  76. Negative Feedback
  77. scott 299D output transformers?
  78. chocke anode load, please explain me..
  79. Integrated HiEnd Amp
  80. Looking for advice/tips regarding simple SE amplifer
  81. Tube amps from vintage RTR's?
  82. componet upgrade
  83. What is "AA" ?
  84. question about twin triode tubes
  85. Building a preamp - somewhat new to tubes
  86. need some guidance about tube amplifiers
  87. Blackgate FK 10000 uF ??
  88. PT failure dangers
  89. Outer foil k40y-9
  90. sansui 1000a maintenance
  91. filter cap question
  92. add UL tap for 125ese
  93. Bogen D070 Amp - HELP w/ INFO.
  94. Humming asl 2004dt wave pre amp
  95. Cany anyone supply any info. about this amplifier?
  96. Low voltage 845SE with 300B driver
  97. Cabinet Help!!!!
  98. dc heater supply help
  99. gu-29 tube
  100. LTP question
  101. Over 500V rated electrolytics?
  102. Fireplug? (inline fuse)
  103. Help! Flash-over on my amp :-(
  104. 6550 drive question
  105. 4211D Amp?
  106. Please, reccomand me about 7233 GE NOS
  107. Help! Schematic Conrad Johnson Premier 3
  108. Tubelab SE in parallel?
  109. Just an Idea?
  110. Tried this out, but needs more gain. . .
  111. EL34 Power Stage
  112. Daven Question
  113. How many rectifiers can have mesh plates?
  114. Real Quick Question!!
  115. Wattage of vintage resistors ?
  116. What is the signal path -- the red line?
  117. Hi-end definitive vacuum tube phono pre
  118. Resistors for Stepped Attenuator
  119. dual rectifier clone....
  120. Motorola Console Salvage
  121. single endedtransformer coupled 6sn7 mic preamp
  122. Brett's 12B4 schematic?
  123. insulated turret terminals
  124. Building first tube power amplifier, reccomendations?
  125. Can you use a MOSFET as a cathodyne
  126. Resolving cold midrange in 5687 circuit
  127. 829B SE Comments????
  128. Shielding and regulator location in the KTA 26 preamp
  129. Voice of music, antique or reproduction?
  130. Quick Question - Audio Note M1 or AR SP-6?
  131. Red Light District/Baby Huey (EL84 P-P) Output Iron
  132. help with PSE design
  133. Tantalum VS CC & metalfilm
  134. Rise-time question
  135. Have an odd problem with my Aikido.
  136. Weird Hybrid Splitter (equal impedances?)
  137. Tube 6550 to test
  138. Using semiconductor curvetracer for tubes...
  139. Question regarding 3rd wire grounding and safety
  140. Plate Current VS Plate Voltage Graphs
  141. Toggle Switch Contact Type and Rating
  142. Inside information on Shuguang
  143. 6N6P vs. 6N6P-I
  144. Technical Survey Paper -- Need Some Help!
  145. VOLTAGE DOUBLER : drop in current?
  146. Using genetic algorithms to optimize pentode parameters
  147. Favorite size wire for signal wiring?
  148. Any idea what this thing is?
  149. Breadboarding Poindexter's 6GK5/EL34 Music Machine
  150. bad 5ar4?
  151. 6DJ8 biasing question
  152. anyone ever use el86/6cw5?
  153. Is it worth using anything other than DHTs for preamps?
  154. Billington Export Ltd Tubes?
  155. 845SE : comments on this circuit?
  156. Tip-Restoring Vintage Pot
  157. B+ Delay - Is this a problem?
  158. Toroids in SET
  159. I have to sell my Pyramid-V prototype...
  160. Stealing a preamp
  161. OLD GOLD, or something I can dissassemble and use
  162. CF PP design
  163. Preamp Idea
  164. Metal Oxide Screen Stoppers
  165. Splitting up power supply inductance
  166. Back to Back transformers and safety ground
  167. Vintage tube tester
  168. 7 pin ECC81.
  169. 26 Driver Tube for 45 - Operating Points
  170. My New pre-amplifier£¡
  171. Echocord Super Question
  172. High quality matching panel meters?
  173. 6BY5GA question
  174. Seeking schematic for Conn organ amp
  175. Will this work as a differential stage?
  176. Tube ID and suggestions
  177. 6L6 to EL34 conversion
  178. my saturation test ??
  179. DO-35 diode inside vacuum tube ?
  180. Transformer Polarity
  181. Modular Gain Stages for Tube Guitar Amp
  182. Where to go for tube gear in Hong Kong?
  183. EL84 Shunt reg for pre-amp, 85A1?
  184. Tube Preamp Idea
  185. UTC Linear Standard High Level matching transformers
  186. Manley Compact 160w noise problem -please help
  187. D3a Experimenters Breadboard Project
  188. Dtmm
  189. Running Single Ended 6V6 in Triode Mode
  190. 6v6pp Finished
  191. Stereo Buffer with a single twin triode
  192. Marshall volume drop off help
  193. Anybody recognize this pentode?
  194. Original schemes of amplifiers for 45 tubes of 1920 and 1930 years?
  195. My new amplifier£_300BSE!
  196. low zout vs output transfo
  197. can't find valve art tube - and glowey tube pic
  198. Which Phono Pre???
  199. EICO HF-20 Guitar Amp Convert
  200. BB 1702 DAC + transformer I/V ?
  201. aikido build thread-
  202. Triode Connected 6BK5
  203. need help in building tube amplifier 10 watter
  204. Parasitic oscillations in general
  205. Help Russian tube experts.
  206. forced aircooling
  207. Dirty Cheap Vintage Pot Fix - Your Opinion Please
  208. ask jan first
  209. running 6S4S/6C4C hot .. calling widowmaker
  210. An Odd Duck -- Gibson BR-6f Guitar Amp
  211. Covi Mark II OTL Help
  212. Volume pot between triodes?
  213. Series Pass Transistor for TL-783
  214. Anyone else have the new Mullard EL34's?
  215. VR tubes in single ended circuits
  216. Transformer for Tube Amps?
  217. "Magga Amp Workshop" builds again (Simple 45 Project)
  218. How to handle Reclaimed Transformers
  219. Dual supply...
  220. How much would this cost/how complicated would this be...
  221. low cost DHT hum pots vendors?
  222. Tube Buffer – question?
  223. Bogen CHB 10A questions
  224. 12B4 Preamp
  225. adding output tubes etc to pre amp
  226. primaluna dialogue 5 and fanboys?
  227. yaqin mc-100b
  228. KT88 in place of 6550?
  229. Tube manaul data sheets
  230. Need a bias supply how??
  231. Wouldn't you just love to have these!. United Electronics 211's
  232. Using single tube of Dual
  233. 21st century tube? Non-Vacuum
  234. making two minibloks for stereo
  235. Lynn Olson Raven Question
  236. Inrush current limiting heater filaments
  237. Tube amp with "meter"?
  238. lytics and choke AFTER regulator
  239. Boosing the power of your existing amp.
  240. Component ID from a 50EH5 Amp
  241. Music Angel KT88 Bridged /Bias problem
  242. Output of preamp drops when overdriven
  243. Choke load calculation...
  244. 807 SE amp schematic
  245. DC Heater Voltage
  246. Choke loading vs. SRPP
  247. Unloaded Power Transformer Current Draw/Janus-Aikido snipet
  248. Need help with tubed output for PCM1793 DAC
  249. Single ended transformer grounding question
  250. Reforming Caps with Variac

Content Relevant URLs by vBSEO 3.3.2