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 99 100 101 102 103 104 105

  1. 12AX7 preamp on 375V
  2. The Blue Velvet Line Preamp with 7193 instead of 6SN7
  3. Increase idle current on my KT77's?
  4. Yet another nutty idea - don't say I didn't warn
  5. Need help calibrating a Hickok 6000 Chicago
  6. need someone to run a sim in PSUD2...my PC is down and my MAC wont runt the program!!
  7. Building an B-15-inspired amp
  8. China preamp Xiang Sheng 768A
  9. RE: Fisher 200 tube amp fuse blowing issue
  10. How do you match output tubes?
  11. Best Dyna ST-70 rebuild kit?
  12. Help with tube wiring
  13. st70 problem
  14. Help with info on old valve amp
  15. Exceeding V-heater-cathode
  16. Cayin/Sparks A- 50T schematic.
  17. Looking for Bi siemens datasheet
  18. Transformers, transformers, transformers...
  19. Need ideas for my 6V6 from 1946 Blues / rockabilly
  20. Quasi complimentary output stage?
  21. 4ohm output transformer with 8ohm speaker
  22. First DIY project for a good power Amplifier
  23. Cherry red plates
  24. DIY triode
  25. First post/build
  26. New Transformer Vendor In Belgium
  27. KT88 grid stopper
  28. Connecting valve shields to earth
  29. Shindo MAZERIS BELLEVUS MODEL 454-2xAttenuator-How works this Circuit? 6067+12BH7
  30. Fixed bias failure B+ switch off protection
  31. Who can tell me where to buy Caddock MS220
  32. Uses for Quicksilver Transformers
  33. SE amp problem
  34. EL-34 to 6P3S-E
  35. 6922 sepp with Balanced Gains
  36. What path to choose for Hamonica amplifier?
  37. tubes for these OPT?, pri 1.75Kohm, sec 2.5, 4, 8ohm, taps 20%, weight 4Kg
  38. Turning a 6.3 V secondary into a 5 V secondary on an Antek 2T350
  39. gridchokes/output caps
  40. Can I build an MC30?
  41. Cathodyne: Can someone please help me fill in the blanks ?
  42. help hovland hp200
  43. 6SL7 and 6AS7 PP amplifier, design advice needed
  44. Project: Baldwin Tube Amp...
  45. Power Supply Input Capacitor - JE simple 45 question
  46. Tube output: Voltage or Current source?
  47. Edcor's new E-store website.....finally!
  48. Help complete the 300B schematic
  49. Confusion about a 5Y3GT rectifier
  50. Need advice on 300B circuit
  51. PCB in components
  52. new 6080 dc pp
  53. Single ended to balanced Aikido with mosfets in buffer position
  54. Simple LED power indicator light circuit?
  55. about 83 mercury rectifier
  56. Aikido Zo Calculation
  57. Pavane/ Psvane 845, 805, 211, 12AX7, 12AU7, 12AT7 and EL84
  58. Is this Telefunken fake or OEM?
  59. About Hmmmmm
  60. PRE-AMP PROJECT SRPP + HEADPHONE AMP
  61. 6BN11 vs 6CB6
  62. Is output stage local feedback necessary?
  63. Tube Longevity
  64. Power triode drive current requirements
  65. OPT Selection Question
  66. Recommend me a 6V6 P-P schematic
  67. Requesting advice on a pre-amp build. I'm working on asking realistic questions.
  68. So, im going to replace the Alps with a PEC...someone help?
  69. 13e1 se "shade" some questions
  70. Pio russian capacitor K42-11...is good ?
  71. My first build VTA ST-120
  72. World Wide Audio, model: HBP-97a, Hybrid Power Amplifier - info needed
  73. DIY 50C5 mini amp...
  74. So you think you have cool tubes?????
  75. Layout
  76. Looking to ID this amp
  77. Help me to make tube amply
  78. CAT SL1 SIGNATURE schematik phono
  79. Have anyone built this 6V6 amp?
  80. GU-50 in Single-Ended Triode Configuration - What bias points?
  81. DC coupling on a LTP? Opinions and help needed on Fred's design.
  82. Power Selection - Help Needed
  83. Which speaker with a 1/4W tube amp?
  84. 6973 VS 6CZ5 substitute
  85. Third Reich tubes
  86. Hello...and another ST-70 project.
  87. Home theater magic smoke...smoked and I think I heard a mirror crack...
  88. Scott LK48-B restoration
  89. 3 - 12AU7 Preamp. Is there such an animal?
  90. 300b filament
  91. resistor 880 ohms cathode
  92. Anyone have a Bugle Boy logo
  93. Change of circuit from triode to tetrode
  94. Need upgrade info for my Atma-Sphere Novacron Amps
  95. Whats Vintage Testing Equipment Do YOU Have/Use?
  96. JJ Kt77 Bias?
  97. tube rectified psu
  98. HELP!: my SET amp was turned off without a load and now it sound veiled!
  99. 5842 grid leak
  100. AMI Jukebox speaker impedence question
  101. Advice Needed: "Flabby" Amp Low-End
  102. Aikido transformer coupled output
  103. Audio measurements on tube amp. ? look here
  104. 12BH7A driver stage help
  105. Audio drive to g2 connected to g1 via 15K0
  106. KT88 SE Complete Kit
  107. Any high-end 6BM8 push pull tube amp schematic ?
  108. How a Triode Works
  109. EL3N substitute
  110. Magnavox AMP-185
  111. Best 6V6G that won't get me divorced..
  112. Shorted EL34 ?
  113. ARC VS60 hum in speaker
  114. Need help for a bias circuit
  115. Eico HF20 Output Txr Questions
  116. A Radford STA15 restoration story
  117. Tube Testing in DC Area
  118. Thorens PR24
  119. Newbie here with a couple questions
  120. 300B SwitchMode filament supply
  121. Mixed bias for balancing unmatched tubes in PPP?
  122. My First DIY Experience: An Aikido/Tetra Preamp
  123. how to test chokes for current and voltage
  124. pictures miniblok 1 and miniblok 2 by fred nachbaur
  125. Help with Aikido Preamp+class d amp
  126. will a PTX without center tap work?
  127. Anyone have information on 300B silvertone tube
  128. 6P14P push pull with low output
  129. passive 30Hz-20kHz Bandpass filter for tube preamp?
  130. My First Amp
  131. Frank's 6sn7 preamp
  132. My new 300B Amp
  133. help troubleshooting gradually distorting tube amp (dropping b+ voltage when hot)
  134. Tube Gear Supply/Surplus in Houston Area
  135. What 2a3 ?
  136. long tailed pair - need more gain
  137. how to bypass the volume pot on my SET amp?
  138. 2 stage AIKIDO
  139. Guys please help me with my Jolida 102B!
  140. Philbrick GAP/R K2-W question
  141. First time baby Huey amplifier build
  142. 6LB6's....
  143. LMG Capacitor
  144. Meng 6PI Biasing Question
  145. AIKIDO LV WON'T START
  146. Under rating of Vertical Sweep Tubes
  147. Simple 845 tube monoblock design
  148. Running on filament only
  149. soft stat
  150. BJT Bias?
  151. Preamp Squeal
  152. Hammond L101 compensation cap
  153. Powering a headphone amplifier with DC filament supply
  154. new to this
  155. miniblok 1 voltage problem
  156. How will this affect my amp?
  157. Tetra Phono Builders...got problems!
  158. yagoolar's tube amp projects
  159. Base material of GEC KT88 Feb 1960
  160. Headphone amp with 6n2p valve on 12V
  161. pcc189 for audio use
  162. Reading material
  163. 2A3 rectifier
  164. help calibrating a mercury model 1000 tube tester
  165. 866a valve test
  166. Anybody in the Knoxville area?
  167. Looking for simple Push-Pull tricks (from Baby Huey) #1
  168. Why wire an output transformer as autoformer ? (parafeed)
  169. Measuring unwanted grid current
  170. Tube companies
  171. Hi Performance Pre amp
  172. HH Scott Type 209 Amp
  173. 6l6gb PP w/fixed bias?
  174. Holy cow! Can anyone tell me why this wire is so pricey?
  175. EL34B 6N9P 5Z3P amplifier kit - any thoughts on schematic?
  176. 4 x EL84 in UL PP, 470 B+!! is this right
  177. What amp is this?
  178. PS Setup For Testing
  179. OTL designed by Tim Mellow with 4 6C33C?
  180. Quick question on this schematic
  181. Variac, how to ?
  182. Tube data sheets - inaccuracy
  183. Benny's new ForeWatt SRPP pre amplifier
  184. OddWatt PP UL amplifier from scratch
  185. OPT Impedance
  186. Rectifier Valves
  187. WE311 amp
  188. Sherwood S8000 transformers
  189. yaqin MS-12B Search for Diagrams
  190. EICO HF-30 - Schematic
  191. 12AU7 Phono Stage
  192. How to install a motor run capcitor
  193. Sanity check on B+ regulator
  194. 6B4G PPP idea
  195. First OTL breadboarded
  196. New amp build
  197. Tube Parametric EQ - Idea looking for clarification
  198. DHT heater supply
  199. MC/MM Phono Pream PCB
  200. Help Identifying Old Westinghouse Tube Amp?
  201. GM70 SE Amplifier
  202. OPT considerations
  203. Help - the pre amp I made is not working!
  204. Aikido tube connections.
  205. EL34 PP output tranny questions
  206. DC heater voltage 6 volts or 12 volts?
  207. Dynaco st70....Can I use 6 ohm speakers?
  208. Aikido vs. Foreplay
  209. I found a valve amp in my garage...
  210. Separate PSU to Amp connection
  211. cheep miniure meters
  212. cary SLA 70
  213. Help!!! My Audioromy FU29 amplifier was fried!
  214. Help!!! My Audioromy FU29 amplifier was fried!
  215. Take a look at my transformers
  216. input transformer for Simple SE Tubelab amp
  217. miniblok 2 distorted sound
  218. Appropriate replacement OPT for Fisher 30-A with 2.5Ohm Secondary
  219. For hk citation II owners\experts.
  220. Dynakit Mark III amplifier
  221. Transformer in reverse current doubt
  222. CELLINI-2 a hybrid
  223. Need help starting
  224. ARC (Audio Research) VT50
  225. mixed mode bias
  226. 2C52 datasheet
  227. Yaqin SD-CD2 tube buffer - upgrading stock tubes
  228. 12v Tube amp
  229. Is this ok
  230. 12ax7 Bass Preamp Power Supply Question.
  231. Help a newbie out with his Sherwood S-800iii
  232. A&R 4008 output transformers
  233. Kulish Circuit
  234. A little digression= read on
  235. Sweep tubes and G3
  236. CCS - Help!
  237. Another odd-ball PA amplifier
  238. Question About High-Fidelity Magazine 195x - 196x
  239. The HEATHKIT MA-12 a MULLARD 5-10 In Disguise.
  240. who have schematic of Phenix OTL G3?
  241. CHAMP8 with ECLL800
  242. Drive requirements.....
  243. KT88 hybrid amplifier
  244. 2300 ohm vs 5000 ohm output trans question
  245. Has anyone used this regulator?
  246. Diy HiFi Supply Tram Mk2 DHT OTL Preamplifier
  247. Current mirror circuits
  248. splitter/driver stage
  249. Would someone explain this amp to me please?
  250. What am I experiencing?

Content Relevant URLs by vBSEO 3.3.2