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

  1. Bias voltage slower to come up
  2. Can You Reccommend a 6922 tube?
  3. Miniblok Resistor Parameter Modulation using Pots
  4. gm70 driver tube tests
  5. 300B Globe physical dimensions
  6. DIY Fisher 800b into a mic pre
  7. OPT Modification Question-Help please?
  8. Cant find origin
  9. Fixing Sneaky Oscillation in P-P Amplifiers
  10. fu-29 Audioromy
  11. Almarro A205A as experimentation platform
  12. Thoughts on layout and potential for improvements
  13. What is the difference between "rectifier tubes" and "power tubes"
  14. uTracer...
  15. EL84/UL84 single valve amp
  16. Mic preamp - strange high frequency roll off problem
  17. Tissbury audio
  18. midification to srpp preamplifier input voltage
  19. DHT SE amp with ultrapath
  20. Tube mic preamp problem
  21. Output transformer: reasons for destruction?
  22. Bewitch KT88
  23. SE OPT Wiring
  24. maggie 185 to stereo guitar amp?
  25. Budget 300b tubes recommendations
  26. Hum problem through one channel
  27. Audio Research LS22 DIY
  28. 300V Tube Power Supply From 120VAC Without Rectifier?
  29. NOS Tube: Black Spot on Getter Flashing? Help
  30. FET Source Follower Distortion
  31. TUBE/MOSFET/BJT hibrid amp
  32. PYE Black Box amplifier
  33. Tube tester
  34. what OPT for 211 parallel SE amp?
  35. Opinions for 6550 bias.
  36. 832A as a Single Ended Tetrode Amp?
  37. DCPP - "Engineer's Amplifier" : Need a bit of help
  38. quicky rebuild 6v6 to 807
  39. Old fire bottles.
  40. Regulated Power Supply using 6550
  41. GU50 SE vs 300B SE tube amp??
  42. Help with voltages
  43. New to valves & this forum.
  44. new amp 2a3 pp
  45. Telefunken EL153 SE circuity
  46. RH 84 Variation: Direct Coupled Pentode
  47. Single Transformer, two valve rectifiers
  48. Capacitors for Radio Frequency Amlifier and Converter Oscillator Tubes
  49. Tube Screening Cans
  50. PSU grounding
  51. 6AX4GT TV damper
  52. plate on chinese 6L6 red on one side
  53. FM stereo decoder
  54. Under the Christmas Tree - Valve Amplifiers 4th Ed.
  55. Using those dern 1625 tubes: a simple SEP amplifier
  56. Pairs of resistors in opposite directions
  57. 45 spice model
  58. APEX 460 Tube mic modification
  59. EL84 and 6BQ5 are Same?
  60. Simple hybrid amplifier (35W/8Ohm)
  61. Yaqin mc 10l or qinpu 6000 mkii
  62. Reported attack site?
  63. LCR RIAA Phono with DHTs
  64. New Here -Would Like to Build
  65. 12E1 push pull poweramp
  66. marantz model 9
  67. I would appreciate some helpfull advice from Aikido builders
  68. Dynaco ST70 big Snorting noise.
  69. Good Soft Distortion
  70. magnavox 8301 revamp, need's a second look
  71. Circuit or schematic for current source of 7.5mA
  72. Sakuma's bleeder tubes and series connected transfomers
  73. Tube measurement
  74. adding tone control to SE 6v6 amp
  75. Easy Little 6L6 SE
  76. knight KA-55
  77. Hum in tube amp
  78. Lundahl LL1660 10 mA Alt V
  79. 12au7 valve preamp (again?)
  80. Simple DC heating question
  81. 6146B?
  82. Reduce gain on power amp?
  83. ES9023 DAC(subbu) + Tube Preamp with Remote and R2R volume control(Danzup)
  84. AC heaters question
  85. Anyone tried this Mcintosh c22 knock off.
  86. Help me to find pins for tube socket
  87. HT delay pcb...
  88. Power supply, heater questions...
  89. Heathkit AA-151, to separate pre-amp advise needed?
  90. grounding
  91. 2 Stage GM-70 amp in A2... possible?
  92. GlassWare Janus Shunt Rectifier Tube Swap
  93. Schematics
  94. SE 6B4G driver tube options?
  95. seeking datasheet of 6J2B-V in english
  96. Nailing Hum in my Phono Stage
  97. Shaving voltage off HV supply?
  98. LEAK T12 and POINT ONE - worth having ?
  99. Quicksilvers Mid Mono Schematic?
  100. Russian & East European Tube Factory Logos
  101. Lampizator Channel
  102. RIAA triode or pentode
  103. Cute Little Tube Oscilloscope, Thought I'd share.
  104. Is it really possible to deliver 2W into 40 ohms with an SET ?
  105. se
  106. Connecting Two Amps to Common Input
  107. Wiring Aikido using LSA/HPA switch
  108. Most exotic SET power amplifier
  109. Help with rogers cadet 3 integrated
  110. Opamps for servos in tube amps - Christmas gift from LT, 12-12-12!
  111. tube amp hum........normal or suggested fix?
  112. Building a beast: Stereo EL84 auto bias PP tube amp
  113. Becker Brescia auto radio
  114. Double feedback pentode Power Stage
  115. Anyone Using Guiguang 300b tubes?
  116. Where to get Audio Note Gaku-On service manual?
  117. Sanity Check - Input Transformer Overshoot
  118. TOA HA-355 vintage tube PA amp schematic
  119. EL34 PushPull UL Amp
  120. 6L6G emission too high
  121. Need help designing BIAS circuit for old Bell amp
  122. Heathkit A-5A 6L6 PP Integrated Amp
  123. Where to put the meter
  124. Radii GS-40pp
  125. Concept dilemma (pre/pwr/spud content)
  126. What to do with these Eimac tubes?
  127. Driving 211 with VT25 or EL34?
  128. DIY AMP start project - Help choosing one
  129. Pilot 248B Amp with weak channel
  130. 6H30 VA stage?
  131. What is the best way to connect DC filaments?
  132. suggestions for a parallel feed 45 amp?
  133. Counterpoint SA 5.1 repairs
  134. The Morgan Jones mini tube headphone Amplifier
  135. Borbely headphone amp
  136. Found An Amplifier In My Basement I'd Forgotten About & Learn It's Sought After
  137. Floating OPT oscilloscope measuraments
  138. I Wasn't Away That Long, What's WIth The Price Hikes On All My Old Toys?
  139. Channel voltage mismatch
  140. OS70/1750 datasheets
  141. Beautiful Chassis
  142. 6A4, 46 and 47...excellent sound tubes !!!!
  143. Is it Overkill to use Duelund Caps in Power Stage (Counterpoint SA-5.1)
  144. Quicksilver M135 Schematic?
  145. recognize this old amp?
  146. grey fogging inside 6sn7
  147. Point to point or pcb?
  148. Quad query
  149. Fixing a Velleman K4040 - Buzz HIss Crackle Blown Tubes
  150. Found Original Genalex 12AX7..Need Advice..
  151. OPT power rating and amplifier power
  152. 6BG6-GA
  153. EL84 driving EL84 SET with fixed bias
  154. P2P 6CG7 Input Buffer
  155. 865 in triode mode...anyone ever tried it?
  156. PP KT88 Amp Low frequency Ringing
  157. World audio designs kel34
  158. Glassware Audio Design
  159. 2A3 mounted horizontally
  160. from tube amp to fm reciever
  161. diy tube amp
  162. Cary 805ae xlr option
  163. ST-70 mono makeover
  164. breaking in audio capacitors
  165. Question about 6V6GT amp schematic
  166. Sherwood Schematic
  167. Ever hear of a D7L1 or D7L3 YR7 tube?
  168. Psvane Replica RCA 2A3 tube - WR2A3
  169. 845 Driver Circuit
  170. ADJUSTABLE BIAS MOD KIT
  171. Gold Lion B749 12au7 Thoughts?
  172. Siliconray SRK 09 tube amp kit help
  173. Quantum minstrel
  174. Does anyone know how John Lee Hooker recorded this? (1949)
  175. Please Identify these black capacitors.
  176. New Tubes too silent (6P15P)
  177. best sounding & value amp kits/designs?
  178. Custom Woodwork For Tube Amp
  179. Tube 2E22 in triode mode
  180. Has anyone built an OTL amp with switch mode power supplies.
  181. Altec 15067 transformers
  182. Some interesting findings with transformers
  183. Bogen KO-60 Output Iron
  184. What would you do with Scott 222D IRON?
  185. Aikido vs CCDA
  186. wiring color code
  187. Maverick Audio TubeMagic D1 DAC
  188. Is one gz34 enough
  189. Edcor OPT opinions
  190. mengyue mini/ming da el34b
  191. I need a tube buffer circuit using a 12au7
  192. Stereo Amplifier Wood Enclosure
  193. What is the theoretical advantage of direct heated triodes?
  194. 6AS6 is useful for audio ?
  195. GM-70 design approach
  196. Ultimate emotion core material ( types of silicon steel , Permalloy or Amorphous etc)
  197. Looking to build my first tube amplifier
  198. Tube/SS opamp
  199. Biasing 6CA7/EL34 in Luxman LX33
  200. John Broskie MIA again?
  201. combine filament winding for rectifier
  202. HYBRID TUBE CFP
  203. 9302 Maggie Rebuild
  204. Pyramid-IX monoblock, 200W from 4x GU-50
  205. Suggestions of phono stage to build
  206. Do power transformers affect sound quality?
  207. Help with a Velleman K4040 ...
  208. Capacitor replacement confusion
  209. RCA PA Amplifer, Input Transformers
  210. Channel imbalance Xiang Sheng DAC-01
  211. ARC M100s
  212. pros & cons of current mirror to balance a push-pull ?
  213. Wright Audio WLA10 help needed
  214. The Best tube/valve sound!?
  215. Mcintosh MC1000 and Ming Da MC300-PRE
  216. Operating Modern 845s
  217. The Transcendent Sound Son of Beast OTL Master/Mod Thread.
  218. Neutralizing An Amplifier
  219. Stacked speakers driven by an SEP amp?
  220. Tube buffer suggestion for LM4702 amplifier?
  221. FWB Voltage Doubler with -Bias supply
  222. 500V SE pentode design
  223. single ended transformer driving 32ohm speaker
  224. uC based Tube Curve Tracer Kit - Experts Opinion ?
  225. 250K Attenuator
  226. Possible to drive PP EL34-triodes with a cathodyne phase-splitter?
  227. Daughters POD amp 13EM7 Pics
  228. Calculating Ripple Current with PSUD2
  229. Channel problem on 45 converted amp
  230. Want to make a tube preamp
  231. Marantz TC-5 choke value
  232. diference between schematics and pcb layout
  233. Would this work?
  234. Can old resistors go bad?
  235. Strange output tube behaviour
  236. Practical question: toroidal transformer / heater current / kt120
  237. Morgan Jones Power supply cap values
  238. Can use a ballast for a PSU??
  239. Looking for a OTL tube headphone amp design
  240. Relative Humidity Attenuating HF
  241. Parallel Output transformer question
  242. Need help to ID a tube...
  243. Modifications to Sennheiser VKS 203
  244. Onix SP3 integrated amp latest schematic
  245. Omit sp3 integrated amp latest schematic
  246. Help: Western Electric 102A Tube Datasheet and Test Settings
  247. Power and output transformer separated from amplifier
  248. discrete and simple VCCS
  249. heater wiring question
  250. What is the deal with Welborne Labs?

Content Relevant URLs by vBSEO 3.3.2