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

  1. Shaving voltage off HV supply?
  2. LEAK T12 and POINT ONE - worth having ?
  3. Quicksilvers Mid Mono Schematic?
  4. Russian & East European Tube Factory Logos
  5. Lampizator Channel
  6. RIAA triode or pentode
  7. Cute Little Tube Oscilloscope, Thought I'd share.
  8. Is it really possible to deliver 2W into 40 ohms with an SET ?
  9. se
  10. Connecting Two Amps to Common Input
  11. Wiring Aikido using LSA/HPA switch
  12. Most exotic SET power amplifier
  13. Help with rogers cadet 3 integrated
  14. Opamps for servos in tube amps - Christmas gift from LT, 12-12-12!
  15. tube amp hum........normal or suggested fix?
  16. Building a beast: Stereo EL84 auto bias PP tube amp
  17. Becker Brescia auto radio
  18. Double feedback pentode Power Stage
  19. Anyone Using Guiguang 300b tubes?
  20. Where to get Audio Note Gaku-On service manual?
  21. Sanity Check - Input Transformer Overshoot
  22. TOA HA-355 vintage tube PA amp schematic
  23. EL34 PushPull UL Amp
  24. 6L6G emission too high
  25. Need help designing BIAS circuit for old Bell amp
  26. Heathkit A-5A 6L6 PP Integrated Amp
  27. Where to put the meter
  28. Radii GS-40pp
  29. Concept dilemma (pre/pwr/spud content)
  30. What to do with these Eimac tubes?
  31. Driving 211 with VT25 or EL34?
  32. DIY AMP start project - Help choosing one
  33. Pilot 248B Amp with weak channel
  34. 6H30 VA stage?
  35. What is the best way to connect DC filaments?
  36. suggestions for a parallel feed 45 amp?
  37. Counterpoint SA 5.1 repairs
  38. The Morgan Jones mini tube headphone Amplifier
  39. Borbely headphone amp
  40. Found An Amplifier In My Basement I'd Forgotten About & Learn It's Sought After
  41. Floating OPT oscilloscope measuraments
  42. I Wasn't Away That Long, What's WIth The Price Hikes On All My Old Toys?
  43. Channel voltage mismatch
  44. OS70/1750 datasheets
  45. Beautiful Chassis
  46. 6A4, 46 and 47...excellent sound tubes !!!!
  47. Is it Overkill to use Duelund Caps in Power Stage (Counterpoint SA-5.1)
  48. Quicksilver M135 Schematic?
  49. recognize this old amp?
  50. grey fogging inside 6sn7
  51. Point to point or pcb?
  52. Quad query
  53. Fixing a Velleman K4040 - Buzz HIss Crackle Blown Tubes
  54. Found Original Genalex 12AX7..Need Advice..
  55. OPT power rating and amplifier power
  56. 6BG6-GA
  57. EL84 driving EL84 SET with fixed bias
  58. P2P 6CG7 Input Buffer
  59. 865 in triode mode...anyone ever tried it?
  60. PP KT88 Amp Low frequency Ringing
  61. World audio designs kel34
  62. Glassware Audio Design
  63. 2A3 mounted horizontally
  64. from tube amp to fm reciever
  65. diy tube amp
  66. Cary 805ae xlr option
  67. ST-70 mono makeover
  68. breaking in audio capacitors
  69. Question about 6V6GT amp schematic
  70. Sherwood Schematic
  71. Ever hear of a D7L1 or D7L3 YR7 tube?
  72. Psvane Replica RCA 2A3 tube - WR2A3
  73. 845 Driver Circuit
  74. ADJUSTABLE BIAS MOD KIT
  75. Gold Lion B749 12au7 Thoughts?
  76. Siliconray SRK 09 tube amp kit help
  77. Quantum minstrel
  78. Does anyone know how John Lee Hooker recorded this? (1949)
  79. Please Identify these black capacitors.
  80. New Tubes too silent (6P15P)
  81. best sounding & value amp kits/designs?
  82. Custom Woodwork For Tube Amp
  83. Tube 2E22 in triode mode
  84. Has anyone built an OTL amp with switch mode power supplies.
  85. Altec 15067 transformers
  86. Some interesting findings with transformers
  87. Bogen KO-60 Output Iron
  88. What would you do with Scott 222D IRON?
  89. Aikido vs CCDA
  90. wiring color code
  91. Maverick Audio TubeMagic D1 DAC
  92. Is one gz34 enough
  93. Edcor OPT opinions
  94. mengyue mini/ming da el34b
  95. I need a tube buffer circuit using a 12au7
  96. Stereo Amplifier Wood Enclosure
  97. What is the theoretical advantage of direct heated triodes?
  98. 6AS6 is useful for audio ?
  99. GM-70 design approach
  100. Ultimate emotion core material ( types of silicon steel , Permalloy or Amorphous etc)
  101. Looking to build my first tube amplifier
  102. Tube/SS opamp
  103. Biasing 6CA7/EL34 in Luxman LX33
  104. John Broskie MIA again?
  105. combine filament winding for rectifier
  106. HYBRID TUBE CFP
  107. 9302 Maggie Rebuild
  108. Pyramid-IX monoblock, 200W from 4x GU-50
  109. Suggestions of phono stage to build
  110. Do power transformers affect sound quality?
  111. Help with a Velleman K4040 ...
  112. Capacitor replacement confusion
  113. RCA PA Amplifer, Input Transformers
  114. Channel imbalance Xiang Sheng DAC-01
  115. ARC M100s
  116. pros & cons of current mirror to balance a push-pull ?
  117. Wright Audio WLA10 help needed
  118. The Best tube/valve sound!?
  119. Mcintosh MC1000 and Ming Da MC300-PRE
  120. Operating Modern 845s
  121. The Transcendent Sound Son of Beast OTL Master/Mod Thread.
  122. Neutralizing An Amplifier
  123. Stacked speakers driven by an SEP amp?
  124. Tube buffer suggestion for LM4702 amplifier?
  125. FWB Voltage Doubler with -Bias supply
  126. 500V SE pentode design
  127. single ended transformer driving 32ohm speaker
  128. uC based Tube Curve Tracer Kit - Experts Opinion ?
  129. 250K Attenuator
  130. Possible to drive PP EL34-triodes with a cathodyne phase-splitter?
  131. Daughters POD amp 13EM7 Pics
  132. Calculating Ripple Current with PSUD2
  133. Channel problem on 45 converted amp
  134. Want to make a tube preamp
  135. Marantz TC-5 choke value
  136. diference between schematics and pcb layout
  137. Would this work?
  138. Can old resistors go bad?
  139. Strange output tube behaviour
  140. Practical question: toroidal transformer / heater current / kt120
  141. Morgan Jones Power supply cap values
  142. Can use a ballast for a PSU??
  143. Looking for a OTL tube headphone amp design
  144. Relative Humidity Attenuating HF
  145. Parallel Output transformer question
  146. Need help to ID a tube...
  147. Modifications to Sennheiser VKS 203
  148. Onix SP3 integrated amp latest schematic
  149. Omit sp3 integrated amp latest schematic
  150. Help: Western Electric 102A Tube Datasheet and Test Settings
  151. Power and output transformer separated from amplifier
  152. discrete and simple VCCS
  153. heater wiring question
  154. What is the deal with Welborne Labs?
  155. Center Channel
  156. input stage problem help please!
  157. Tube Tips/Tricks for beginners
  158. Any skilled custom tube amplifier builders out there?
  159. Are these tubes really matched?
  160. Single Ended Amp
  161. Mighty Midget Problems
  162. Run the tube stuff in your car
  163. Jackson 648 test for 6973
  164. Space-charge tetrodes in Inverted Mode
  165. choosing input valve
  166. Rectifier characteristics
  167. Glass-ware?
  168. 5751 Mil spec tubes vrs 12AX7
  169. 47 pentode...fabulous sound !!!!
  170. Aikido preamp transformer question
  171. 40's tube receiver question
  172. W5m transformer
  173. Dual voltage PS filtering.
  174. OD3 150V tube regulator
  175. Fisher 500c
  176. Help with quad cap upgrade
  177. low voltage hybrid power amplifier
  178. Morgan Jones Kapacitors
  179. Which IR LED?
  180. Tube Frequency Response
  181. Big B+ voltage drop using diode rectifier.
  182. Triode ST70 kit schematic?
  183. 6AU6 replacement
  184. IT in cathode for driver class A2 tube
  185. Bogen MX30 Output Transformers
  186. Worlds Most Expensive Tube Amp !!!
  187. Blown screen resistor
  188. Blown screen resistor
  189. To ground plane or not?
  190. 5Z4PA Alternative?
  191. Question about chassis ground
  192. 6337- wtf is it?
  193. need ideers for a 6 channel amp
  194. sv572 transformer headache
  195. 6C33C / 6EM7
  196. 6146 TUBES ?
  197. Impedance matching
  198. QRP03 - Tube Buffered Gainclone
  199. Amp Cage Fababricators?
  200. PP KT88, Need help!
  201. Question regarding rectifier tube replacement
  202. Harmon Kardon A500
  203. Double triode 6SN7
  204. Tank's DIY tube preamp
  205. C core OPT for PP EL84
  206. amp diagram for KT88 and 300B on the same circuit
  207. Yaqin MS 34 D
  208. Tube buffer for amplifier with LM1875
  209. What is the best ?
  210. Fender DRRI tone
  211. DUKANE tube PA help
  212. Old tube? HELP RSE NP-7V-12 168810
  213. My first tube power amp
  214. Another mystery tube:
  215. Quad 22 Wiring
  216. Radford phase splitter again
  217. hookup wire source
  218. MCU adjustable fixed bias
  219. vr tube / glow tube as filter?
  220. Using phono stage only of preamp
  221. Correct settings for EBL21 and other tube on Hickok 539C
  222. Decca Portable Record Player model DPS8 Filter cap replacment
  223. 6V6 vs EL84 for output
  224. Realistic HK 210/Acrosound Stereo 120 Amp Schmatic/Manual Needed
  225. 2A3 with 12AT7
  226. Voltage rating of plate gyrator MOSFET
  227. Quad22 like preamplifier kit
  228. Push-pull implemented with KT88
  229. My QUAD 2 Restoration
  230. DIY High Power Car Tube Amp
  231. Perished insulation on transformer secondary - seems shorted. What can I do here?
  232. Need advice and help with new build
  233. Suggestions for a cheap Stereo Phono tube preamp based upon this power transformer?
  234. Determining imput impedence of a preamp line stage
  235. Newb question on 12AU7 gain stage
  236. Valve Preamplifier Help
  237. OPT choices - 6L6 PPP
  238. MESA STRATEGY 400
  239. Shuguang, Beijing or Shanghai EL84 ?
  240. CJ PV-5 tubes
  241. Reference tube amp kit, <20 watts for under $1,000?
  242. ccs power supply 310a
  243. At what point does it become a "hybrid" ?
  244. Line filters
  245. Step-up MC transformer for Audio Research SP 6C
  246. Psud help.
  247. MC Step-Up OTL Stage (grounded-grid) for MM RIAA Head Amps
  248. Repurposing heathkit s-2 electronic switch
  249. output cap bypass?
  250. 6e5p & 6c41 tube amplifier

Content Relevant URLs by vBSEO 3.3.2