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  1. 6KG6-EL509-EL519 Schematics wanted
  2. Difference between SE output transformer and push-pull output transformers
  3. Sourcing OPTs in Australia
  4. Is there a LOCTAL equiv to a 6V6?
  5. 10m45s LTspice model
  6. What circuit and tube to be used
  7. experimental 6L6G / 6BG6G amp design brainstorm
  8. 29GK6 heater current?
  9. Bench PS: stacking DC supplies
  10. Mr Liung schematics
  11. Want to build tube amp
  12. Runaway bias on Hot Rod Deville
  13. Back to back transformers.
  14. Using Battery for 300v B+ ?
  15. Anyone recognice this RIAA?
  16. Power cord replacement
  17. Negative LTP CCS supply
  18. c-j pre amp blowing tubes?
  19. first amp build
  20. Tube Mic Preamp - which Edcor transformer?
  21. Scaling the SLCF for other voltage - help
  22. Question about Allied & Hammond Power Transformer Ratings
  23. Education
  24. Tubelab SE with a 6BX7 to drive 845s
  25. Bias Ground
  26. Suggestions for RIAA preamp?
  27. External Test Points
  28. b2spice model request
  29. 12aY 7 preamp out
  30. 3B7 Loctal DHT
  31. Aikido All in One line stage amp PCB
  32. SS power supply.
  33. 6AU6 pentodes
  34. Parafeed with NP electrolytic?
  35. Charlie K - RIP
  36. Need some advise with a hum problem
  37. What resistor should I use?
  38. IN18 nixies
  39. Tubelab SE build and power supply questions.
  40. Quality of S5's K-12G in proposed system
  41. Gibson EH 150 restoration
  42. Transformer volume control questions.
  43. Power transformer star ground
  44. Shielding and chassis
  45. Side project - d3a and 6c41c
  46. Cathode-heater leakage
  47. Bell 2122 volume drop off
  48. -500V Maida regulator inquiry
  49. 7591 is glowing RED
  50. Hum problem
  51. Need PS schematic for Musical Machine
  52. Polystyrene capacitor as coupling in output tube stages
  53. Help needed with 10M45S integration .
  54. Ultrasonic Cleaning??????
  55. The daunting world of tubes (where to start)
  56. help 124.3 vac
  57. Bat VK3i buzzing noise
  58. Audioromy FU13 (813) diagram and mods
  59. any complete schematic for 6ak5?
  60. Weird fuzz from Aikido Pre, HELP!
  61. Question about tube amplifier.
  62. 811a rating question
  63. Anode chokes DIY?
  64. EI laminations in Europe
  65. Needed: transformer core materials cobalt nickel
  66. Anybody from Italy - please help
  67. Bogen AP35 amp problem
  68. Question about a VR screen supply
  69. DIY Amp Contest in Japan
  70. Hot 5AR4/GZ34 arcing on powerup surge?
  71. Rh84 Ptx
  72. Buzz. Grounding-related?
  73. 50/60Hz Hum - Your Expert Opinion Please
  74. Static Gm test
  75. High Voltage negative regulators
  76. where do i find old tube car radio schematics?
  77. Burned Up Transformer in HiFi 6p3p Tube Amplifier
  78. capacitors
  79. Wire Types
  80. Weird EH12AY7 Problem
  81. Pot and knob compatability
  82. ECC8100 and ECC2000
  83. DHT experts, i need your help
  84. transformers
  85. Vetruvio class-A
  86. PP to balanced input
  87. KT88 AB2 Experiences
  88. Group buy pulse check for Pete Millett tube crossover PCB
  89. Calculating operating point of a DHT
  90. upgrades, mods to JADIS JA-200, JPS2 and JPS3
  91. McIntosh MC-3500 Schematic Information
  92. Use 2X SE output transformers fo 1x PP
  93. 12B4a spice model.
  94. Help identifying a capacitor
  95. recommended a tube amp for Celestron Studio Ditton 66's
  96. Help needed with bias circuit
  97. 220 Mega Ohm Resistor - Really
  98. How to bias DH dual triodes?
  99. Any of these tubes good for audio applications?
  100. DIY AN M7 need help !!!
  101. Need schematic for Bell 2420 amp
  102. new SimpleSE build
  103. My Citation II Rebuild
  104. KT88 cathode resistors?
  105. Dynaco ST35 boards
  106. Triode strapping a 6V6 (or any tetrode/pentode, really)
  107. ECC 83 + ELL 80 maybe?
  108. need amp suggestions please.
  109. Phase splitter which tube?
  110. WANTED: 12B4A tubes
  111. re-stacking an output transformer
  112. A directly heated triode or Pentode SE amp on a Budget
  113. Annoying high frequency ringing from my 832 tube amp
  114. 30 Amp Knobs
  115. A question about audio interconnects for the ones here with such knowledge.
  116. Hi-end GM70 amplifier with only 2 stages
  117. Paragon
  118. Simple SE with CCS and fixed bias
  119. Idea(s) for simple HV regulated psu
  120. NOS Philips "miniwatt/dario" tubes
  121. Hybrid Class D with 6n6p tubes
  122. Any ideas how to estimate VA or mA of Power Tranny
  123. 6L6 Grid resistors??
  124. HeathKit W-2: Missing Tube
  125. Edcor CXSE25-8-5K Dimensions
  126. Bias Pots
  127. Negative Feedback
  128. scott 299D output transformers?
  129. chocke anode load, please explain me..
  130. Integrated HiEnd Amp
  131. Looking for advice/tips regarding simple SE amplifer
  132. Tube amps from vintage RTR's?
  133. componet upgrade
  134. What is "AA" ?
  135. question about twin triode tubes
  136. Building a preamp - somewhat new to tubes
  137. need some guidance about tube amplifiers
  138. Blackgate FK 10000 uF ??
  139. PT failure dangers
  140. Outer foil k40y-9
  141. sansui 1000a maintenance
  142. filter cap question
  143. add UL tap for 125ese
  144. Bogen D070 Amp - HELP w/ INFO.
  145. Humming asl 2004dt wave pre amp
  146. Cany anyone supply any info. about this amplifier?
  147. Low voltage 845SE with 300B driver
  148. Cabinet Help!!!!
  149. dc heater supply help
  150. gu-29 tube
  151. LTP question
  152. Over 500V rated electrolytics?
  153. Fireplug? (inline fuse)
  154. Help! Flash-over on my amp :-(
  155. 6550 drive question
  156. 4211D Amp?
  157. Please, reccomand me about 7233 GE NOS
  158. Help! Schematic Conrad Johnson Premier 3
  159. Tubelab SE in parallel?
  160. Just an Idea?
  161. Tried this out, but needs more gain. . .
  162. EL34 Power Stage
  163. Daven Question
  164. How many rectifiers can have mesh plates?
  165. Real Quick Question!!
  166. Wattage of vintage resistors ?
  167. What is the signal path -- the red line?
  168. Hi-end definitive vacuum tube phono pre
  169. Resistors for Stepped Attenuator
  170. dual rectifier clone....
  171. Motorola Console Salvage
  172. single endedtransformer coupled 6sn7 mic preamp
  173. Brett's 12B4 schematic?
  174. insulated turret terminals
  175. Building first tube power amplifier, reccomendations?
  176. Can you use a MOSFET as a cathodyne
  177. Resolving cold midrange in 5687 circuit
  178. 829B SE Comments????
  179. Shielding and regulator location in the KTA 26 preamp
  180. Voice of music, antique or reproduction?
  181. Quick Question - Audio Note M1 or AR SP-6?
  182. Red Light District/Baby Huey (EL84 P-P) Output Iron
  183. help with PSE design
  184. Tantalum VS CC & metalfilm
  185. Rise-time question
  186. Have an odd problem with my Aikido.
  187. Weird Hybrid Splitter (equal impedances?)
  188. Tube 6550 to test
  189. Using semiconductor curvetracer for tubes...
  190. Question regarding 3rd wire grounding and safety
  191. Plate Current VS Plate Voltage Graphs
  192. Toggle Switch Contact Type and Rating
  193. Inside information on Shuguang
  194. 6N6P vs. 6N6P-I
  195. Technical Survey Paper -- Need Some Help!
  196. VOLTAGE DOUBLER : drop in current?
  197. Using genetic algorithms to optimize pentode parameters
  198. Favorite size wire for signal wiring?
  199. Any idea what this thing is?
  200. Breadboarding Poindexter's 6GK5/EL34 Music Machine
  201. bad 5ar4?
  202. 6DJ8 biasing question
  203. anyone ever use el86/6cw5?
  204. Is it worth using anything other than DHTs for preamps?
  205. Billington Export Ltd Tubes?
  206. 845SE : comments on this circuit?
  207. Tip-Restoring Vintage Pot
  208. B+ Delay - Is this a problem?
  209. Toroids in SET
  210. I have to sell my Pyramid-V prototype...
  211. Stealing a preamp
  212. OLD GOLD, or something I can dissassemble and use
  213. CF PP design
  214. Preamp Idea
  215. Metal Oxide Screen Stoppers
  216. Splitting up power supply inductance
  217. Back to Back transformers and safety ground
  218. Vintage tube tester
  219. 7 pin ECC81.
  220. 26 Driver Tube for 45 - Operating Points
  221. My New pre-amplifier£°
  222. Echocord Super Question
  223. High quality matching panel meters?
  224. 6BY5GA question
  225. Seeking schematic for Conn organ amp
  226. Will this work as a differential stage?
  227. Tube ID and suggestions
  228. 6L6 to EL34 conversion
  229. my saturation test ??
  230. DO-35 diode inside vacuum tube ?
  231. Transformer Polarity
  232. Modular Gain Stages for Tube Guitar Amp
  233. Where to go for tube gear in Hong Kong?
  234. EL84 Shunt reg for pre-amp, 85A1?
  235. Tube Preamp Idea
  236. UTC Linear Standard High Level matching transformers
  237. Manley Compact 160w noise problem -please help
  238. D3a Experimenters Breadboard Project
  239. Dtmm
  240. Running Single Ended 6V6 in Triode Mode
  241. 6v6pp Finished
  242. Stereo Buffer with a single twin triode
  243. Marshall volume drop off help
  244. Anybody recognize this pentode?
  245. Original schemes of amplifiers for 45 tubes of 1920 and 1930 years?
  246. My new amplifier£_300BSE!
  247. low zout vs output transfo
  248. can't find valve art tube - and glowey tube pic
  249. Which Phono Pre???
  250. EICO HF-20 Guitar Amp Convert

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