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

  1. 1U5 amplifier design, Newbie
  2. 12AU7 Pre-amp Schematic Question
  3. Capacitor Question...
  4. Beam pentodes and suppressor-grid pentodes of same type
  5. Quick question about CT and FWB
  6. 46 and the Tubelab SE
  7. Frank's 6SN7 line stage / preamp with GlassWare PS-1?
  8. knobs, lights and switches?
  9. SimpleSE OP Hammond bigger than the 125ESE
  10. Speaker impedance linearisation
  11. Differential filter circuit: biasing problem
  12. Curves for 12AH7
  13. Schematic for Audio Note Japan Kassai
  14. Help with schematic understanding
  15. SEPP output transformer
  16. Fixed bias design question
  17. Strange bias circuit. WTF?
  18. 5687 preamp transformer
  19. Anyone know of a dual pentode suitable for a LTP.
  20. Output transformer current and power ratings
  21. Diodes to protect OT's..
  22. Simple SE: ???Dumb Tube Rectifier question???
  23. Speakers for tube amps
  24. Help on power supply
  25. Line output transformer question
  26. Solid vs stranded wire in amplifier circuits
  27. Screen Drive Push Pull ideas
  28. 12AT7/46 Direct Reactance Drive Amp
  29. Bridge rectifier vs Full wave rectifier
  30. Isolation Transformer Question
  31. Glow tubes as series regs ?
  32. Glow tube shunt reg stability
  33. Some interesting reading about Sweep tubes
  34. What is this?
  35. What's A "Timber bulb"?
  36. aikido/807PSE and local feedback
  37. Repairing paper in oil caps.
  38. Optoisolator compressor ideas
  39. Airgap for filament transformer ?
  40. Tube stereo for E 60 including TDA1541 cd player
  41. Bad Boy amplifier Tubelab.com style
  42. is there a typo in the Tubelab SE schematic?
  43. Theta Amp problem
  44. 12A_7 vs 6SN7EH vs EF86?
  45. Mixing two channels in the preamp or at the phase splitter?
  46. amp input cap for crossover
  47. Audio Transformer/Cathode Feedback Info
  48. Determining cathode resistor
  49. Tube Pin Schematic Question
  50. Simple SE blowing fuses
  51. Best looking tube?
  52. Identifying Stancor Power transformers
  53. HT crowbar
  54. "Bevois Valley" in triode, what to do with the feedback?
  55. Purple Glow
  56. When to use a grid leak resistor?
  57. Mcintosh MA 2275
  58. Marshall 18W clone (sort of)
  59. Cathode feedback on the simple SE
  60. Blowing output transformer
  61. Kenwood KW-44 hum
  62. Tube system for classical audio
  63. Novel method to reduce filament hum in SE Amp?
  64. Help with 6SN7 w/ CCS
  65. Fisher X-101-D
  66. best tube (not amp)
  67. Simple SE Cap and layout questions???
  68. Simple SE - one channel intermittent problem
  69. ML4/ML6 British triode
  70. transformer rubbish
  71. Identifying output transformer leads
  72. Grounding Aikido and F4
  73. Determining ratings for unknown Power Transformers
  74. Tube heaven - or tube hell?
  75. Fender "Evil Twin" Hi/Low output = same level
  76. Sub amp/speaker to compliment S5 electronics K 12 G tube amp
  77. Troubleshooting hum in 12b4 preamp.. finally almost done!!
  78. SE cathode bias question
  79. k-12G / K-12M with 4 Ohm speakers
  80. About united electron tube
  81. 6c33c-b & 6c33c-v
  82. would like a substitute for Sowter 3575-C
  83. My first tube project WIP
  84. Tube rectifiede +- supply...
  85. the buzzing from amplifiers
  86. MC prepre with submini tubes
  87. 12AU7 Preamp build
  88. Bias/ Plate dissipation question
  89. Has anyone screen driven an EL84?
  90. tube pre amp for phone stage
  91. 6080 se cathode follower
  92. Amplifier suggestions for EPA OPT please
  93. Which tube? How much power can it produce?
  94. Graaf GM20 mods - help!
  95. xpp amplifier question
  96. 520v in PP UL...?
  97. New ST-70 blowing 3 amp slow blow fuse
  98. Was There a Heathkit W-1M or WM?
  99. 8ohm speakers 4ohm tap
  100. Upgrading the Conrad Johnson Premier Fourteen preamp
  101. Noob's first build !!!!
  102. 6sf5gt ??
  103. Measuring technics practical, the allaround reference method?
  104. 2A3 or KT88 ?
  105. What to build with these tubes?
  106. line output transformer help
  107. 6L6GC Options and Flavors
  108. Chinese Buffer Amp, Useful?
  109. 6C33C SE Amp - Ideas on refinement?
  110. 6BM8 Equivalent
  111. Newbie wants to rebuild a Stromberg Carlson ASR-433
  112. RH84 questions
  113. VTL Manley 807 push pull ultra linear
  114. Seeking Pentode-Triode with a 12AX7 half...
  115. Modern tube amplifier designs?
  116. 6n6p transformer output impedance
  117. 814 triode curves
  118. Bias Question
  119. Building a variac
  120. Is my 300B tube dead?
  121. One channel quiet - any bright ideas?
  122. Saw them coming (stupid prices on ebay)
  123. EL36/6CM5 pp design critique
  124. Driving Raven R2 with tubes
  125. Does Anyone Know What This Is?
  126. Need help with tubes problem...
  127. 6V6GT push pull NFB resistor value
  128. Power cord for single ended triode
  129. Virtual chokes
  130. 12AU7 based preamp hums when output cable is touched!
  131. Possible Test equipment find.
  132. 6ak5-45
  133. Using coax for signal wiring?
  134. Chassis Plate Finish
  135. Schade84
  136. Fisher 800c selenium rectifier pictures
  137. Bass amp from spare parts
  138. Looking for tips on operating points for tubes in anode follower ...
  139. Transformer in the cathodes ??
  140. Fisher 800c static,crackle
  141. 19J6 replacement
  142. Newbie tube buffer kit
  143. Simple se parts, all needed?
  144. Any recommendations for tube for vari-mu compressor?
  145. AMC CVT 3030 Bias Procedure
  146. Cascading volumes on a 5C3 amp
  147. Anyone used a edcor cxpp100-ms-5k OT
  148. Noisy gain boost
  149. Troubleshooting hum issues with batteries?
  150. Rectifying Heater Supply
  151. tube heater over voltage!please help...
  152. rca 829b bias ? Audioromy 828
  153. 10k winding, 100k pot
  154. What is the definition of a 'good tube'?
  155. 3-stage DC-coupled Ampl
  156. 1946 Philco Tube Receiver
  157. A New Source for James Transformers
  158. Edcor Site Down? Gone? anyone know anything?
  159. Please suggest practical DIY uses for these BIG oil caps
  160. How to calculate DRD amps..
  161. PL-519 Tube - Tell me more please...
  162. Need ideas for amp with 2A3, One Electron UBT-3
  163. Favourites discrete brand for tube amp
  164. Pharmicia EPS500/400 Power supply - tube use
  165. Black Art Audio
  166. 12AX7/12BH7 Hammond Tube Preamp Project
  167. Dampen transformer endbells?
  168. Do I have DC on my AC line?
  169. GM-70 cathode feed SE amplifier
  170. Rogers cadet mk 2 newbie project experience required
  171. Mcintosh amps transformer rewinding, help needed please!
  172. Using an output tranny from a stereo for a single-ended amplifier ?
  173. 6336A Single Ended.
  174. UA 175 Urei 175
  175. Morgan Jones 5842 RIAA
  176. Question about current ratings of Hammond 300 series power transformers.
  177. Cathode Windings
  178. Phono stage for 12B4 amp [from previous thread]
  179. Looking for schematic of 26 WOT Preamp
  180. Transformer Lam Questions
  181. Schottky diode bias
  182. ACROSOUND direct-couple EL84 amplifier question
  183. RH807 CCS loaded
  184. Audio Note Kit 1 PSU question
  185. B&K 500 Tube Tester Calibration
  186. New kt88's or 6550
  187. Bias Supply resistors
  188. Incredible source for used transformers and parts!
  189. Reclaimed Hammond H100 PSU's
  190. Arc Vt-60 Cloned :-)
  191. First Time Pre Amp Build
  192. Tubelab SE 300B low level hum, help
  193. 845 - Progress so far
  194. Nube challange12AX7 to drive 6C4
  195. 7th harmonic distortion from PP pentodes depends on bias?
  196. West Output Transformers?
  197. Help me design my DAC/Line Preamp.
  198. Hybrid preamp tube problemHi,
  199. sweept tubes for simple Se recommendation?
  200. Building RH84 SE tube amp.
  201. Question - THD Measrement/Spectrum Analyzis
  202. What to do with TMC tube radio gear?
  203. Easy & Safe & Good sounding gainclone tube buffer
  204. Compactron (31AL10) Head-Scratcher
  205. blackfacing a twin
  206. What cable do you use from input socket to volume pot
  207. problem with 12AE6A buffer
  208. Adding a master volume to a Fender 5C3 Deluxe
  209. Parafeed dc blocking/coupling cap help
  210. Funky Looking 15DQ8s
  211. 12SN7 vs 7N7 bs 6SN7
  212. Correct Pins For EL84 Triode Strap
  213. Dimensions for anode cap sizes?
  214. Mains transformer help needed please
  215. Tone Stack Challenge
  216. Aikido 6SN7 input 5687 output
  217. FRANK"S 6SN7 preamp/linestage
  218. Pentode grid question...
  219. Channel Switching
  220. Hybrid fullwave rectifier
  221. 300B stereo amp project help
  222. Another Bogen CHB 100 Conversion
  223. EdcorEurope
  224. Can AC wires induce hum in output transformers?
  225. Would you use a 4 ohm tap with these speakers?
  226. Changing grid leak bias preamp to cathode bias
  227. 304tl se amp
  228. 5687 Srpp
  229. Dumb Question Brain is numb today!
  230. What a Deal!
  231. Electrons on Parade
  232. Roll Chart for 6DJ8/6922/7308 on Philco 9100 help
  233. MeiXing MC-805AA biasing
  234. whats a good diy tube preamp kit
  235. Electrons on Parade
  236. SimpleSE parts list
  237. Matched tubes or not matched
  238. wood gnomes really do live in france
  239. Pathos Classic one
  240. A Uk supplier of valve amp kits
  241. Detached getter?
  242. 12B4 Line Stage Amp
  243. How do I control volume on Dynaco ST-70?
  244. A few questions from a total novice.
  245. RCA preamp modification
  246. Bogen Challenger CH8 conversion...newb needs help!
  247. 6AU6A - Micropowered tube amp
  248. Yet another DHT filament supply
  249. where to find 5998 ?
  250. Mcintosh MA 2275 Schematic Required

Content Relevant URLs by vBSEO 3.3.2