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

  1. Audio Transformer articles I would like copies of !
  2. K-12 with headphones?
  3. cap wire lead covers
  4. Single ended amp, EL34, KT88 ideas??
  5. Kt-66 and Simple SE
  6. Wavebourn Pyramid - VII driver stage
  7. Mysterious OPT winding tap
  8. DHT…. Get rid of the Hum Pot!
  9. Operating Amp Without Load
  10. Tube choices for Simple SE?
  11. Looking for information on old thread
  12. Tube Leveling Amplifier
  13. Anyone with knowledge of the 12b4?
  14. 7695...useful audio tube??
  15. simple se blowing rectifier and fuse
  16. PSUD - How do interpret the results?
  17. Solder station
  18. TubeLab SE blowing fuse on B+ ramp up
  19. preamp for pl504 amp
  20. Resistor after volume pot
  21. 6021 Amp project..looking for some input
  22. 807 SE project started....
  23. Fun with glow tubes, a success story
  24. OPT question
  25. Cheap and easy vacuum impregnation
  26. How to measure mains waveform safely?
  27. Wanted - High Power, High Voltage, Audio Frequency Transformer Manual.
  28. Aikido Resistor Help
  29. Changing 6SQ7 to 6SL7 in SE amp
  30. Multi-tap OT
  31. harmon kardon a700 amp output trafo impedance
  32. An SE 813 OPT?? SP. Wound??who zat?
  33. Tube rectifier to diode
  34. The Trioderizer
  35. increasing coupling capacitor value in we 91
  36. diy SE Tube Amp
  37. Max power possible from 6L6 with 6.6k load?
  38. OPT grounding question
  39. Tubelab sse transformer wires
  40. SE sound vs Ultra Linear sound
  41. Modify & build out (2) Western Electric 300B / 2A3 Hammond monoblock amps & UTC LS-5
  42. 6N6P or E182cc spice
  43. Ecl82
  44. Zeiss Ikon Dominar L Amplifier
  45. Beginners attempt at SE 6EM7
  46. Changing 300B Tubelab SE to accomidate 50 triodes
  47. Subbing a 5751 with a 5755
  48. Sophia Electric 300B tube
  49. Screen drive and other P-P experiments
  50. Amplifier using a 833A
  51. Circuit help
  52. How much mis-match can an OT take?
  53. SE load mismatch, 8 or 6 or 4 ohms?
  54. Magnavox 196-BA => RH 84 conversion
  55. 40W class A push pull amp with JJ 2A3-40w possible?
  56. "Designing tube preamplifier" article
  57. Valve Tester Guru Help
  58. 6GB5 and Variants as Screen Driven Amps
  59. Gyrator Question
  60. Suggestion Please - Curcuit Simulation & PCB Design Software
  61. Starting to understand.....
  62. Aureavox Arcana 81
  63. Impedance question
  64. spare transformer wires?
  65. Capacitors and maximum voltage ratings
  66. Do Sweep tubes Glow Blue?
  67. Any way to upgrade this circuit? (V. 40's phono amp.)
  68. About tube "matched pairs"
  69. Testing Gm without tube tester
  70. Best place to get Shuguang 300B tubes
  71. Old metal tubes
  72. LTSpice Simulation template?!
  73. 300B pushpull- A new schematic
  74. Drake transformer
  75. TL Audio VP-5051 Valve voice processor
  76. Vtl 750
  77. DC-coupling of tube stages
  78. ThermalTrak transistor application.
  79. weird old amp:need help
  80. Triode Electronics Mark III
  81. Scavenging a broken oscilloscope to turn it into a preamp ?
  82. Scott LK150 transformer
  83. With the Simple SE I lost 20lbs w/o diet or excercise and I feel great!
  84. Tube Amp / Pre-amp kit?
  85. anything that can go as a Rp.....
  86. Genelex gold lion el84 reissue - ARCING
  87. Bias Current Mythbuster?
  88. Exactness of feedback capacitors?
  89. 5608a
  90. You know that you are having a bad day when.......
  91. 1U5 amplifier design, Newbie
  92. 12AU7 Pre-amp Schematic Question
  93. Beam pentodes and suppressor-grid pentodes of same type
  94. Quick question about CT and FWB
  95. 46 and the Tubelab SE
  96. Frank's 6SN7 line stage / preamp with GlassWare PS-1?
  97. knobs, lights and switches?
  98. SimpleSE OP Hammond bigger than the 125ESE
  99. Speaker impedance linearisation
  100. Differential filter circuit: biasing problem
  101. Curves for 12AH7
  102. Schematic for Audio Note Japan Kassai
  103. Help with schematic understanding
  104. SEPP output transformer
  105. Fixed bias design question
  106. Strange bias circuit. WTF?
  107. 5687 preamp transformer
  108. Anyone know of a dual pentode suitable for a LTP.
  109. Output transformer current and power ratings
  110. Diodes to protect OT's..
  111. Simple SE: ???Dumb Tube Rectifier question???
  112. Speakers for tube amps
  113. Help on power supply
  114. Line output transformer question
  115. Solid vs stranded wire in amplifier circuits
  116. Screen Drive Push Pull ideas
  117. 12AT7/46 Direct Reactance Drive Amp
  118. Bridge rectifier vs Full wave rectifier
  119. Isolation Transformer Question
  120. Glow tubes as series regs ?
  121. Glow tube shunt reg stability
  122. Some interesting reading about Sweep tubes
  123. What is this?
  124. What's A "Timber bulb"?
  125. aikido/807PSE and local feedback
  126. Optoisolator compressor ideas
  127. Airgap for filament transformer ?
  128. Tube stereo for E 60 including TDA1541 cd player
  129. Bad Boy amplifier Tubelab.com style
  130. is there a typo in the Tubelab SE schematic?
  131. Theta Amp problem
  132. 12A_7 vs 6SN7EH vs EF86?
  133. Mixing two channels in the preamp or at the phase splitter?
  134. amp input cap for crossover
  135. Audio Transformer/Cathode Feedback Info
  136. Determining cathode resistor
  137. Tube Pin Schematic Question
  138. Simple SE blowing fuses
  139. Best looking tube?
  140. Identifying Stancor Power transformers
  141. HT crowbar
  142. "Bevois Valley" in triode, what to do with the feedback?
  143. Purple Glow
  144. When to use a grid leak resistor?
  145. Mcintosh MA 2275
  146. Cathode feedback on the simple SE
  147. Blowing output transformer
  148. Kenwood KW-44 hum
  149. Tube system for classical audio
  150. Novel method to reduce filament hum in SE Amp?
  151. Help with 6SN7 w/ CCS
  152. Fisher X-101-D
  153. best tube (not amp)
  154. Simple SE Cap and layout questions???
  155. Simple SE - one channel intermittent problem
  156. ML4/ML6 British triode
  157. transformer rubbish
  158. Identifying output transformer leads
  159. Grounding Aikido and F4
  160. Determining ratings for unknown Power Transformers
  161. Tube heaven - or tube hell?
  162. Sub amp/speaker to compliment S5 electronics K 12 G tube amp
  163. Troubleshooting hum in 12b4 preamp.. finally almost done!!
  164. SE cathode bias question
  165. k-12G / K-12M with 4 Ohm speakers
  166. About united electron tube
  167. 6c33c-b & 6c33c-v
  168. would like a substitute for Sowter 3575-C
  169. My first tube project WIP
  170. Tube rectifiede +- supply...
  171. the buzzing from amplifiers
  172. MC prepre with submini tubes
  173. 12AU7 Preamp build
  174. Bias/ Plate dissipation question
  175. Has anyone screen driven an EL84?
  176. tube pre amp for phone stage
  177. 6080 se cathode follower
  178. Amplifier suggestions for EPA OPT please
  179. Which tube? How much power can it produce?
  180. Graaf GM20 mods - help!
  181. xpp amplifier question
  182. 520v in PP UL...?
  183. New ST-70 blowing 3 amp slow blow fuse
  184. Was There a Heathkit W-1M or WM?
  185. 8ohm speakers 4ohm tap
  186. Upgrading the Conrad Johnson Premier Fourteen preamp
  187. Noob's first build !!!!
  188. 6sf5gt ??
  189. Measuring technics practical, the allaround reference method?
  190. 2A3 or KT88 ?
  191. What to build with these tubes?
  192. line output transformer help
  193. 6L6GC Options and Flavors
  194. Chinese Buffer Amp, Useful?
  195. 6C33C SE Amp - Ideas on refinement?
  196. 6BM8 Equivalent
  197. Newbie wants to rebuild a Stromberg Carlson ASR-433
  198. RH84 questions
  199. VTL Manley 807 push pull ultra linear
  200. Seeking Pentode-Triode with a 12AX7 half...
  201. Modern tube amplifier designs?
  202. 6n6p transformer output impedance
  203. 814 triode curves
  204. Bias Question
  205. Building a variac
  206. Is my 300B tube dead?
  207. One channel quiet - any bright ideas?
  208. Saw them coming (stupid prices on ebay)
  209. EL36/6CM5 pp design critique
  210. Driving Raven R2 with tubes
  211. Does Anyone Know What This Is?
  212. Need help with tubes problem...
  213. 6V6GT push pull NFB resistor value
  214. Power cord for single ended triode
  215. Virtual chokes
  216. 12AU7 based preamp hums when output cable is touched!
  217. Possible Test equipment find.
  218. 6ak5-45
  219. Using coax for signal wiring?
  220. Chassis Plate Finish
  221. Schade84
  222. Fisher 800c selenium rectifier pictures
  223. Looking for tips on operating points for tubes in anode follower ...
  224. Transformer in the cathodes ??
  225. Fisher 800c static,crackle
  226. 19J6 replacement
  227. Newbie tube buffer kit
  228. Simple se parts, all needed?
  229. Any recommendations for tube for vari-mu compressor?
  230. AMC CVT 3030 Bias Procedure
  231. Anyone used a edcor cxpp100-ms-5k OT
  232. Noisy gain boost
  233. Troubleshooting hum issues with batteries?
  234. Rectifying Heater Supply
  235. tube heater over voltage!please help...
  236. rca 829b bias ? Audioromy 828
  237. 10k winding, 100k pot
  238. What is the definition of a 'good tube'?
  239. 3-stage DC-coupled Ampl
  240. 1946 Philco Tube Receiver
  241. A New Source for James Transformers
  242. Edcor Site Down? Gone? anyone know anything?
  243. How to calculate DRD amps..
  244. PL-519 Tube - Tell me more please...
  245. Need ideas for amp with 2A3, One Electron UBT-3
  246. Favourites discrete brand for tube amp
  247. Pharmicia EPS500/400 Power supply - tube use
  248. Black Art Audio
  249. 12AX7/12BH7 Hammond Tube Preamp Project
  250. Dampen transformer endbells?

Content Relevant URLs by vBSEO 3.3.2