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

  1. Tube Mic Preamp - which Edcor transformer?
  2. Scaling the SLCF for other voltage - help
  3. Question about Allied & Hammond Power Transformer Ratings
  4. Education
  5. Tubelab SE with a 6BX7 to drive 845s
  6. Bias Ground
  7. Suggestions for RIAA preamp?
  8. External Test Points
  9. b2spice model request
  10. 12aY 7 preamp out
  11. 3B7 Loctal DHT
  12. Aikido All in One line stage amp PCB
  13. SS power supply.
  14. 6AU6 pentodes
  15. Parafeed with NP electrolytic?
  16. Charlie K - RIP
  17. Need some advise with a hum problem
  18. What resistor should I use?
  19. IN18 nixies
  20. Tubelab SE build and power supply questions.
  21. Quality of S5's K-12G in proposed system
  22. Gibson EH 150 restoration
  23. Transformer volume control questions.
  24. Power transformer star ground
  25. Shielding and chassis
  26. Side project - d3a and 6c41c
  27. Cathode-heater leakage
  28. Bell 2122 volume drop off
  29. -500V Maida regulator inquiry
  30. 7591 is glowing RED
  31. Hum problem
  32. Need PS schematic for Musical Machine
  33. Polystyrene capacitor as coupling in output tube stages
  34. Help needed with 10M45S integration .
  35. Ultrasonic Cleaning??????
  36. The daunting world of tubes (where to start)
  37. help 124.3 vac
  38. Bat VK3i buzzing noise
  39. Audioromy FU13 (813) diagram and mods
  40. any complete schematic for 6ak5?
  41. Weird fuzz from Aikido Pre, HELP!
  42. Question about tube amplifier.
  43. 811a rating question
  44. Anode chokes DIY?
  45. EI laminations in Europe
  46. Needed: transformer core materials cobalt nickel
  47. Anybody from Italy - please help
  48. Bogen AP35 amp problem
  49. Question about a VR screen supply
  50. DIY Amp Contest in Japan
  51. Hot 5AR4/GZ34 arcing on powerup surge?
  52. Rh84 Ptx
  53. Buzz. Grounding-related?
  54. 50/60Hz Hum - Your Expert Opinion Please
  55. Static Gm test
  56. High Voltage negative regulators
  57. where do i find old tube car radio schematics?
  58. Burned Up Transformer in HiFi 6p3p Tube Amplifier
  59. capacitors
  60. Wire Types
  61. Weird EH12AY7 Problem
  62. Pot and knob compatability
  63. ECC8100 and ECC2000
  64. DHT experts, i need your help
  65. transformers
  66. Vetruvio class-A
  67. PP to balanced input
  68. KT88 AB2 Experiences
  69. Group buy pulse check for Pete Millett tube crossover PCB
  70. Calculating operating point of a DHT
  71. upgrades, mods to JADIS JA-200, JPS2 and JPS3
  72. McIntosh MC-3500 Schematic Information
  73. Use 2X SE output transformers fo 1x PP
  74. 12B4a spice model.
  75. Help identifying a capacitor
  76. recommended a tube amp for Celestron Studio Ditton 66's
  77. Help needed with bias circuit
  78. 220 Mega Ohm Resistor - Really
  79. How to bias DH dual triodes?
  80. Any of these tubes good for audio applications?
  81. DIY AN M7 need help !!!
  82. Need schematic for Bell 2420 amp
  83. new SimpleSE build
  84. My Citation II Rebuild
  85. KT88 cathode resistors?
  86. Dynaco ST35 boards
  87. Triode strapping a 6V6 (or any tetrode/pentode, really)
  88. ECC 83 + ELL 80 maybe?
  89. need amp suggestions please.
  90. Phase splitter which tube?
  91. WANTED: 12B4A tubes
  92. re-stacking an output transformer
  93. A directly heated triode or Pentode SE amp on a Budget
  94. Annoying high frequency ringing from my 832 tube amp
  95. 30 Amp Knobs
  96. A question about audio interconnects for the ones here with such knowledge.
  97. Hi-end GM70 amplifier with only 2 stages
  98. Paragon
  99. Simple SE with CCS and fixed bias
  100. Idea(s) for simple HV regulated psu
  101. NOS Philips "miniwatt/dario" tubes
  102. Hybrid Class D with 6n6p tubes
  103. Any ideas how to estimate VA or mA of Power Tranny
  104. 6L6 Grid resistors??
  105. HeathKit W-2: Missing Tube
  106. Edcor CXSE25-8-5K Dimensions
  107. Bias Pots
  108. Negative Feedback
  109. scott 299D output transformers?
  110. chocke anode load, please explain me..
  111. Integrated HiEnd Amp
  112. Looking for advice/tips regarding simple SE amplifer
  113. Tube amps from vintage RTR's?
  114. componet upgrade
  115. What is "AA" ?
  116. question about twin triode tubes
  117. Building a preamp - somewhat new to tubes
  118. need some guidance about tube amplifiers
  119. Blackgate FK 10000 uF ??
  120. PT failure dangers
  121. Outer foil k40y-9
  122. sansui 1000a maintenance
  123. filter cap question
  124. add UL tap for 125ese
  125. Bogen D070 Amp - HELP w/ INFO.
  126. Humming asl 2004dt wave pre amp
  127. Cany anyone supply any info. about this amplifier?
  128. Low voltage 845SE with 300B driver
  129. Cabinet Help!!!!
  130. dc heater supply help
  131. gu-29 tube
  132. LTP question
  133. Over 500V rated electrolytics?
  134. Fireplug? (inline fuse)
  135. Help! Flash-over on my amp :-(
  136. 6550 drive question
  137. 4211D Amp?
  138. Please, reccomand me about 7233 GE NOS
  139. Help! Schematic Conrad Johnson Premier 3
  140. Tubelab SE in parallel?
  141. Just an Idea?
  142. Tried this out, but needs more gain. . .
  143. EL34 Power Stage
  144. Daven Question
  145. How many rectifiers can have mesh plates?
  146. Real Quick Question!!
  147. Wattage of vintage resistors ?
  148. What is the signal path -- the red line?
  149. Hi-end definitive vacuum tube phono pre
  150. Resistors for Stepped Attenuator
  151. dual rectifier clone....
  152. Motorola Console Salvage
  153. single endedtransformer coupled 6sn7 mic preamp
  154. Brett's 12B4 schematic?
  155. insulated turret terminals
  156. Building first tube power amplifier, reccomendations?
  157. Can you use a MOSFET as a cathodyne
  158. Resolving cold midrange in 5687 circuit
  159. 829B SE Comments????
  160. Shielding and regulator location in the KTA 26 preamp
  161. Voice of music, antique or reproduction?
  162. Quick Question - Audio Note M1 or AR SP-6?
  163. Red Light District/Baby Huey (EL84 P-P) Output Iron
  164. help with PSE design
  165. Tantalum VS CC & metalfilm
  166. Rise-time question
  167. Have an odd problem with my Aikido.
  168. Weird Hybrid Splitter (equal impedances?)
  169. Tube 6550 to test
  170. Using semiconductor curvetracer for tubes...
  171. Question regarding 3rd wire grounding and safety
  172. Plate Current VS Plate Voltage Graphs
  173. Toggle Switch Contact Type and Rating
  174. Inside information on Shuguang
  175. 6N6P vs. 6N6P-I
  176. Technical Survey Paper -- Need Some Help!
  177. VOLTAGE DOUBLER : drop in current?
  178. Using genetic algorithms to optimize pentode parameters
  179. Favorite size wire for signal wiring?
  180. Any idea what this thing is?
  181. Breadboarding Poindexter's 6GK5/EL34 Music Machine
  182. bad 5ar4?
  183. 6DJ8 biasing question
  184. anyone ever use el86/6cw5?
  185. Is it worth using anything other than DHTs for preamps?
  186. Billington Export Ltd Tubes?
  187. 845SE : comments on this circuit?
  188. Tip-Restoring Vintage Pot
  189. B+ Delay - Is this a problem?
  190. Toroids in SET
  191. I have to sell my Pyramid-V prototype...
  192. Stealing a preamp
  193. OLD GOLD, or something I can dissassemble and use
  194. CF PP design
  195. Preamp Idea
  196. Metal Oxide Screen Stoppers
  197. Splitting up power supply inductance
  198. Back to Back transformers and safety ground
  199. Vintage tube tester
  200. 7 pin ECC81.
  201. 26 Driver Tube for 45 - Operating Points
  202. My New pre-amplifier£°
  203. Echocord Super Question
  204. High quality matching panel meters?
  205. 6BY5GA question
  206. Seeking schematic for Conn organ amp
  207. Will this work as a differential stage?
  208. Tube ID and suggestions
  209. 6L6 to EL34 conversion
  210. my saturation test ??
  211. DO-35 diode inside vacuum tube ?
  212. Transformer Polarity
  213. Modular Gain Stages for Tube Guitar Amp
  214. Where to go for tube gear in Hong Kong?
  215. EL84 Shunt reg for pre-amp, 85A1?
  216. Tube Preamp Idea
  217. UTC Linear Standard High Level matching transformers
  218. Manley Compact 160w noise problem -please help
  219. D3a Experimenters Breadboard Project
  220. Dtmm
  221. Running Single Ended 6V6 in Triode Mode
  222. 6v6pp Finished
  223. Stereo Buffer with a single twin triode
  224. Marshall volume drop off help
  225. Anybody recognize this pentode?
  226. Original schemes of amplifiers for 45 tubes of 1920 and 1930 years?
  227. My new amplifier£_300BSE!
  228. low zout vs output transfo
  229. can't find valve art tube - and glowey tube pic
  230. Which Phono Pre???
  231. EICO HF-20 Guitar Amp Convert
  232. BB 1702 DAC + transformer I/V ?
  233. aikido build thread-
  234. Triode Connected 6BK5
  235. need help in building tube amplifier 10 watter
  236. Parasitic oscillations in general
  237. Help Russian tube experts.
  238. forced aircooling
  239. Dirty Cheap Vintage Pot Fix - Your Opinion Please
  240. ask jan first
  241. running 6S4S/6C4C hot .. calling widowmaker
  242. An Odd Duck -- Gibson BR-6f Guitar Amp
  243. Covi Mark II OTL Help
  244. Volume pot between triodes?
  245. Series Pass Transistor for TL-783
  246. Anyone else have the new Mullard EL34's?
  247. VR tubes in single ended circuits
  248. Transformer for Tube Amps?
  249. "Magga Amp Workshop" builds again (Simple 45 Project)
  250. How to handle Reclaimed Transformers

Content Relevant URLs by vBSEO 3.3.2