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. Opamps for servos in tube amps - Christmas gift from LT, 12-12-12!
  2. tube amp hum........normal or suggested fix?
  3. Building a beast: Stereo EL84 auto bias PP tube amp
  4. Becker Brescia auto radio
  5. Double feedback pentode Power Stage
  6. Anyone Using Guiguang 300b tubes?
  7. Where to get Audio Note Gaku-On service manual?
  8. Sanity Check - Input Transformer Overshoot
  9. TOA HA-355 vintage tube PA amp schematic
  10. EL34 PushPull UL Amp
  11. 6L6G emission too high
  12. Need help designing BIAS circuit for old Bell amp
  13. Heathkit A-5A 6L6 PP Integrated Amp
  14. Where to put the meter
  15. Radii GS-40pp
  16. Concept dilemma (pre/pwr/spud content)
  17. What to do with these Eimac tubes?
  18. Driving 211 with VT25 or EL34?
  19. DIY AMP start project - Help choosing one
  20. Pilot 248B Amp with weak channel
  21. 6H30 VA stage?
  22. What is the best way to connect DC filaments?
  23. suggestions for a parallel feed 45 amp?
  24. Counterpoint SA 5.1 repairs
  25. The Morgan Jones mini tube headphone Amplifier
  26. Borbely headphone amp
  27. Found An Amplifier In My Basement I'd Forgotten About & Learn It's Sought After
  28. Floating OPT oscilloscope measuraments
  29. I Wasn't Away That Long, What's WIth The Price Hikes On All My Old Toys?
  30. Channel voltage mismatch
  31. OS70/1750 datasheets
  32. Beautiful Chassis
  33. 6A4, 46 and 47...excellent sound tubes !!!!
  34. Is it Overkill to use Duelund Caps in Power Stage (Counterpoint SA-5.1)
  35. Quicksilver M135 Schematic?
  36. recognize this old amp?
  37. grey fogging inside 6sn7
  38. Point to point or pcb?
  39. Quad query
  40. Fixing a Velleman K4040 - Buzz HIss Crackle Blown Tubes
  41. Found Original Genalex 12AX7..Need Advice..
  42. OPT power rating and amplifier power
  43. 6BG6-GA
  44. EL84 driving EL84 SET with fixed bias
  45. P2P 6CG7 Input Buffer
  46. 865 in triode mode...anyone ever tried it?
  47. PP KT88 Amp Low frequency Ringing
  48. World audio designs kel34
  49. Glassware Audio Design
  50. 2A3 mounted horizontally
  51. from tube amp to fm reciever
  52. diy tube amp
  53. Cary 805ae xlr option
  54. ST-70 mono makeover
  55. breaking in audio capacitors
  56. Question about 6V6GT amp schematic
  57. Sherwood Schematic
  58. Ever hear of a D7L1 or D7L3 YR7 tube?
  59. Psvane Replica RCA 2A3 tube - WR2A3
  60. 845 Driver Circuit
  61. ADJUSTABLE BIAS MOD KIT
  62. Gold Lion B749 12au7 Thoughts?
  63. Siliconray SRK 09 tube amp kit help
  64. Quantum minstrel
  65. Does anyone know how John Lee Hooker recorded this? (1949)
  66. Please Identify these black capacitors.
  67. New Tubes too silent (6P15P)
  68. best sounding & value amp kits/designs?
  69. Custom Woodwork For Tube Amp
  70. Tube 2E22 in triode mode
  71. Has anyone built an OTL amp with switch mode power supplies.
  72. Altec 15067 transformers
  73. Some interesting findings with transformers
  74. Bogen KO-60 Output Iron
  75. What would you do with Scott 222D IRON?
  76. Aikido vs CCDA
  77. wiring color code
  78. Maverick Audio TubeMagic D1 DAC
  79. Is one gz34 enough
  80. Edcor OPT opinions
  81. mengyue mini/ming da el34b
  82. I need a tube buffer circuit using a 12au7
  83. Stereo Amplifier Wood Enclosure
  84. What is the theoretical advantage of direct heated triodes?
  85. 6AS6 is useful for audio ?
  86. GM-70 design approach
  87. Ultimate emotion core material ( types of silicon steel , Permalloy or Amorphous etc)
  88. Looking to build my first tube amplifier
  89. Tube/SS opamp
  90. Biasing 6CA7/EL34 in Luxman LX33
  91. John Broskie MIA again?
  92. combine filament winding for rectifier
  93. HYBRID TUBE CFP
  94. 9302 Maggie Rebuild
  95. Pyramid-IX monoblock, 200W from 4x GU-50
  96. Suggestions of phono stage to build
  97. Do power transformers affect sound quality?
  98. Help with a Velleman K4040 ...
  99. Capacitor replacement confusion
  100. RCA PA Amplifer, Input Transformers
  101. Channel imbalance Xiang Sheng DAC-01
  102. ARC M100s
  103. pros & cons of current mirror to balance a push-pull ?
  104. Wright Audio WLA10 help needed
  105. The Best tube/valve sound!?
  106. Mcintosh MC1000 and Ming Da MC300-PRE
  107. Operating Modern 845s
  108. The Transcendent Sound Son of Beast OTL Master/Mod Thread.
  109. Neutralizing An Amplifier
  110. Stacked speakers driven by an SEP amp?
  111. Tube buffer suggestion for LM4702 amplifier?
  112. FWB Voltage Doubler with -Bias supply
  113. 500V SE pentode design
  114. single ended transformer driving 32ohm speaker
  115. uC based Tube Curve Tracer Kit - Experts Opinion ?
  116. 250K Attenuator
  117. Possible to drive PP EL34-triodes with a cathodyne phase-splitter?
  118. Daughters POD amp 13EM7 Pics
  119. Calculating Ripple Current with PSUD2
  120. Channel problem on 45 converted amp
  121. Want to make a tube preamp
  122. Marantz TC-5 choke value
  123. diference between schematics and pcb layout
  124. Would this work?
  125. Can old resistors go bad?
  126. Strange output tube behaviour
  127. Practical question: toroidal transformer / heater current / kt120
  128. Morgan Jones Power supply cap values
  129. Can use a ballast for a PSU??
  130. Looking for a OTL tube headphone amp design
  131. Relative Humidity Attenuating HF
  132. Parallel Output transformer question
  133. Need help to ID a tube...
  134. Modifications to Sennheiser VKS 203
  135. Onix SP3 integrated amp latest schematic
  136. Omit sp3 integrated amp latest schematic
  137. Help: Western Electric 102A Tube Datasheet and Test Settings
  138. Power and output transformer separated from amplifier
  139. discrete and simple VCCS
  140. heater wiring question
  141. What is the deal with Welborne Labs?
  142. Center Channel
  143. input stage problem help please!
  144. Tube Tips/Tricks for beginners
  145. Any skilled custom tube amplifier builders out there?
  146. Are these tubes really matched?
  147. Single Ended Amp
  148. Mighty Midget Problems
  149. Run the tube stuff in your car
  150. Jackson 648 test for 6973
  151. Space-charge tetrodes in Inverted Mode
  152. choosing input valve
  153. Rectifier characteristics
  154. Glass-ware?
  155. 5751 Mil spec tubes vrs 12AX7
  156. 47 pentode...fabulous sound !!!!
  157. Aikido preamp transformer question
  158. 40's tube receiver question
  159. W5m transformer
  160. Dual voltage PS filtering.
  161. OD3 150V tube regulator
  162. Fisher 500c
  163. Help with quad cap upgrade
  164. low voltage hybrid power amplifier
  165. Morgan Jones Kapacitors
  166. Which IR LED?
  167. Tube Frequency Response
  168. Big B+ voltage drop using diode rectifier.
  169. Triode ST70 kit schematic?
  170. 6AU6 replacement
  171. IT in cathode for driver class A2 tube
  172. Bogen MX30 Output Transformers
  173. Worlds Most Expensive Tube Amp !!!
  174. Blown screen resistor
  175. Blown screen resistor
  176. To ground plane or not?
  177. 5Z4PA Alternative?
  178. Question about chassis ground
  179. 6337- wtf is it?
  180. need ideers for a 6 channel amp
  181. sv572 transformer headache
  182. 6C33C / 6EM7
  183. 6146 TUBES ?
  184. Impedance matching
  185. QRP03 - Tube Buffered Gainclone
  186. Amp Cage Fababricators?
  187. PP KT88, Need help!
  188. Question regarding rectifier tube replacement
  189. Harmon Kardon A500
  190. Double triode 6SN7
  191. Tank's DIY tube preamp
  192. C core OPT for PP EL84
  193. amp diagram for KT88 and 300B on the same circuit
  194. Yaqin MS 34 D
  195. Tube buffer for amplifier with LM1875
  196. What is the best ?
  197. Fender DRRI tone
  198. DUKANE tube PA help
  199. Old tube? HELP RSE NP-7V-12 168810
  200. My first tube power amp
  201. Another mystery tube:
  202. Quad 22 Wiring
  203. Radford phase splitter again
  204. hookup wire source
  205. MCU adjustable fixed bias
  206. vr tube / glow tube as filter?
  207. Using phono stage only of preamp
  208. Correct settings for EBL21 and other tube on Hickok 539C
  209. Decca Portable Record Player model DPS8 Filter cap replacment
  210. 6V6 vs EL84 for output
  211. Realistic HK 210/Acrosound Stereo 120 Amp Schmatic/Manual Needed
  212. 2A3 with 12AT7
  213. Voltage rating of plate gyrator MOSFET
  214. Quad22 like preamplifier kit
  215. Push-pull implemented with KT88
  216. My QUAD 2 Restoration
  217. DIY High Power Car Tube Amp
  218. Perished insulation on transformer secondary - seems shorted. What can I do here?
  219. Need advice and help with new build
  220. Suggestions for a cheap Stereo Phono tube preamp based upon this power transformer?
  221. Determining imput impedence of a preamp line stage
  222. Newb question on 12AU7 gain stage
  223. Valve Preamplifier Help
  224. OPT choices - 6L6 PPP
  225. MESA STRATEGY 400
  226. Shuguang, Beijing or Shanghai EL84 ?
  227. CJ PV-5 tubes
  228. Reference tube amp kit, <20 watts for under $1,000?
  229. ccs power supply 310a
  230. At what point does it become a "hybrid" ?
  231. Line filters
  232. Step-up MC transformer for Audio Research SP 6C
  233. Psud help.
  234. MC Step-Up OTL Stage (grounded-grid) for MM RIAA Head Amps
  235. Repurposing heathkit s-2 electronic switch
  236. output cap bypass?
  237. 6e5p & 6c41 tube amplifier
  238. Looking for my first tube amp...
  239. Acceptable variance in plate voltage?
  240. SRPP bias calculation
  241. 6A3 test, what am I doing wrong?
  242. Goldline Phono Tube Pre Amp PCB - Analog Metric
  243. New Copper Nanoparticle Solder - Breakthrough?
  244. SRPP as a final stage? What do you think?
  245. Troughline Transmissionline theory explanation needed
  246. Help with odd bias method on Crown tube amp
  247. preamp output impedance matching
  248. KT66 Woes
  249. Help with Calibration: Hickok Western Electric KS-15750-L1 Tubes Tester
  250. Cascode driver

Content Relevant URLs by vBSEO 3.3.2