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
  1. With the Simple SE I lost 20lbs w/o diet or excercise and I feel great!
  2. Tube Amp / Pre-amp kit?
  3. anything that can go as a Rp.....
  4. Genelex gold lion el84 reissue - ARCING
  5. diy Ampeg preamp
  6. Bias Current Mythbuster?
  7. Exactness of feedback capacitors?
  8. 5608a
  9. You know that you are having a bad day when.......
  10. 1U5 amplifier design, Newbie
  11. 12AU7 Pre-amp Schematic Question
  12. Capacitor Question...
  13. Beam pentodes and suppressor-grid pentodes of same type
  14. Quick question about CT and FWB
  15. 46 and the Tubelab SE
  16. Frank's 6SN7 line stage / preamp with GlassWare PS-1?
  17. knobs, lights and switches?
  18. SimpleSE OP Hammond bigger than the 125ESE
  19. Speaker impedance linearisation
  20. Differential filter circuit: biasing problem
  21. Curves for 12AH7
  22. Schematic for Audio Note Japan Kassai
  23. Help with schematic understanding
  24. SEPP output transformer
  25. Fixed bias design question
  26. Strange bias circuit. WTF?
  27. 5687 preamp transformer
  28. Anyone know of a dual pentode suitable for a LTP.
  29. Output transformer current and power ratings
  30. Diodes to protect OT's..
  31. Simple SE: ???Dumb Tube Rectifier question???
  32. Speakers for tube amps
  33. Help on power supply
  34. Line output transformer question
  35. Solid vs stranded wire in amplifier circuits
  36. Screen Drive Push Pull ideas
  37. 12AT7/46 Direct Reactance Drive Amp
  38. Bridge rectifier vs Full wave rectifier
  39. Isolation Transformer Question
  40. Glow tubes as series regs ?
  41. Glow tube shunt reg stability
  42. Some interesting reading about Sweep tubes
  43. What is this?
  44. What's A "Timber bulb"?
  45. aikido/807PSE and local feedback
  46. Repairing paper in oil caps.
  47. Optoisolator compressor ideas
  48. Airgap for filament transformer ?
  49. Tube stereo for E 60 including TDA1541 cd player
  50. Bad Boy amplifier Tubelab.com style
  51. is there a typo in the Tubelab SE schematic?
  52. Theta Amp problem
  53. 12A_7 vs 6SN7EH vs EF86?
  54. Mixing two channels in the preamp or at the phase splitter?
  55. amp input cap for crossover
  56. Audio Transformer/Cathode Feedback Info
  57. Determining cathode resistor
  58. Tube Pin Schematic Question
  59. Simple SE blowing fuses
  60. Best looking tube?
  61. Identifying Stancor Power transformers
  62. HT crowbar
  63. "Bevois Valley" in triode, what to do with the feedback?
  64. Purple Glow
  65. When to use a grid leak resistor?
  66. Mcintosh MA 2275
  67. Marshall 18W clone (sort of)
  68. Cathode feedback on the simple SE
  69. Blowing output transformer
  70. Kenwood KW-44 hum
  71. Tube system for classical audio
  72. Novel method to reduce filament hum in SE Amp?
  73. Help with 6SN7 w/ CCS
  74. Fisher X-101-D
  75. best tube (not amp)
  76. Simple SE Cap and layout questions???
  77. Simple SE - one channel intermittent problem
  78. ML4/ML6 British triode
  79. transformer rubbish
  80. Identifying output transformer leads
  81. Grounding Aikido and F4
  82. Determining ratings for unknown Power Transformers
  83. Tube heaven - or tube hell?
  84. Fender "Evil Twin" Hi/Low output = same level
  85. Sub amp/speaker to compliment S5 electronics K 12 G tube amp
  86. Troubleshooting hum in 12b4 preamp.. finally almost done!!
  87. SE cathode bias question
  88. k-12G / K-12M with 4 Ohm speakers
  89. About united electron tube
  90. 6c33c-b & 6c33c-v
  91. would like a substitute for Sowter 3575-C
  92. My first tube project WIP
  93. Tube rectifiede +- supply...
  94. the buzzing from amplifiers
  95. MC prepre with submini tubes
  96. 12AU7 Preamp build
  97. Bias/ Plate dissipation question
  98. Has anyone screen driven an EL84?
  99. tube pre amp for phone stage
  100. 6080 se cathode follower
  101. Amplifier suggestions for EPA OPT please
  102. Which tube? How much power can it produce?
  103. Graaf GM20 mods - help!
  104. xpp amplifier question
  105. 520v in PP UL...?
  106. New ST-70 blowing 3 amp slow blow fuse
  107. Was There a Heathkit W-1M or WM?
  108. 8ohm speakers 4ohm tap
  109. Upgrading the Conrad Johnson Premier Fourteen preamp
  110. Noob's first build !!!!
  111. 6sf5gt ??
  112. Measuring technics practical, the allaround reference method?
  113. 2A3 or KT88 ?
  114. What to build with these tubes?
  115. line output transformer help
  116. 6L6GC Options and Flavors
  117. Chinese Buffer Amp, Useful?
  118. 6C33C SE Amp - Ideas on refinement?
  119. 6BM8 Equivalent
  120. Newbie wants to rebuild a Stromberg Carlson ASR-433
  121. RH84 questions
  122. VTL Manley 807 push pull ultra linear
  123. Seeking Pentode-Triode with a 12AX7 half...
  124. Modern tube amplifier designs?
  125. 6n6p transformer output impedance
  126. 814 triode curves
  127. Bias Question
  128. Building a variac
  129. Is my 300B tube dead?
  130. One channel quiet - any bright ideas?
  131. Saw them coming (stupid prices on ebay)
  132. EL36/6CM5 pp design critique
  133. Driving Raven R2 with tubes
  134. Does Anyone Know What This Is?
  135. Need help with tubes problem...
  136. 6V6GT push pull NFB resistor value
  137. Power cord for single ended triode
  138. Virtual chokes
  139. 12AU7 based preamp hums when output cable is touched!
  140. Possible Test equipment find.
  141. 6ak5-45
  142. Using coax for signal wiring?
  143. Chassis Plate Finish
  144. Schade84
  145. Fisher 800c selenium rectifier pictures
  146. Bass amp from spare parts
  147. Looking for tips on operating points for tubes in anode follower ...
  148. Transformer in the cathodes ??
  149. Fisher 800c static,crackle
  150. 19J6 replacement
  151. Newbie tube buffer kit
  152. Simple se parts, all needed?
  153. Any recommendations for tube for vari-mu compressor?
  154. AMC CVT 3030 Bias Procedure
  155. Cascading volumes on a 5C3 amp
  156. Anyone used a edcor cxpp100-ms-5k OT
  157. Noisy gain boost
  158. Troubleshooting hum issues with batteries?
  159. Rectifying Heater Supply
  160. tube heater over voltage!please help...
  161. rca 829b bias ? Audioromy 828
  162. 10k winding, 100k pot
  163. What is the definition of a 'good tube'?
  164. 3-stage DC-coupled Ampl
  165. 1946 Philco Tube Receiver
  166. A New Source for James Transformers
  167. Edcor Site Down? Gone? anyone know anything?
  168. Please suggest practical DIY uses for these BIG oil caps
  169. How to calculate DRD amps..
  170. PL-519 Tube - Tell me more please...
  171. Need ideas for amp with 2A3, One Electron UBT-3
  172. Favourites discrete brand for tube amp
  173. Pharmicia EPS500/400 Power supply - tube use
  174. Black Art Audio
  175. 12AX7/12BH7 Hammond Tube Preamp Project
  176. Dampen transformer endbells?
  177. Do I have DC on my AC line?
  178. GM-70 cathode feed SE amplifier
  179. Rogers cadet mk 2 newbie project experience required
  180. Mcintosh amps transformer rewinding, help needed please!
  181. Using an output tranny from a stereo for a single-ended amplifier ?
  182. 6336A Single Ended.
  183. UA 175 Urei 175
  184. Morgan Jones 5842 RIAA
  185. Question about current ratings of Hammond 300 series power transformers.
  186. Cathode Windings
  187. Phono stage for 12B4 amp [from previous thread]
  188. Looking for schematic of 26 WOT Preamp
  189. Transformer Lam Questions
  190. Schottky diode bias
  191. ACROSOUND direct-couple EL84 amplifier question
  192. RH807 CCS loaded
  193. Audio Note Kit 1 PSU question
  194. B&K 500 Tube Tester Calibration
  195. New kt88's or 6550
  196. Bias Supply resistors
  197. Incredible source for used transformers and parts!
  198. Reclaimed Hammond H100 PSU's
  199. Arc Vt-60 Cloned :-)
  200. First Time Pre Amp Build
  201. Tubelab SE 300B low level hum, help
  202. 845 - Progress so far
  203. Nube challange12AX7 to drive 6C4
  204. 7th harmonic distortion from PP pentodes depends on bias?
  205. West Output Transformers?
  206. Help me design my DAC/Line Preamp.
  207. Hybrid preamp tube problemHi,
  208. sweept tubes for simple Se recommendation?
  209. Building RH84 SE tube amp.
  210. Question - THD Measrement/Spectrum Analyzis
  211. What to do with TMC tube radio gear?
  212. Easy & Safe & Good sounding gainclone tube buffer
  213. Compactron (31AL10) Head-Scratcher
  214. blackfacing a twin
  215. What cable do you use from input socket to volume pot
  216. problem with 12AE6A buffer
  217. Adding a master volume to a Fender 5C3 Deluxe
  218. Parafeed dc blocking/coupling cap help
  219. Funky Looking 15DQ8s
  220. 12SN7 vs 7N7 bs 6SN7
  221. Correct Pins For EL84 Triode Strap
  222. Dimensions for anode cap sizes?
  223. Mains transformer help needed please
  224. Tone Stack Challenge
  225. Aikido 6SN7 input 5687 output
  226. FRANK"S 6SN7 preamp/linestage
  227. Pentode grid question...
  228. Channel Switching
  229. Hybrid fullwave rectifier
  230. 300B stereo amp project help
  231. Another Bogen CHB 100 Conversion
  232. EdcorEurope
  233. Can AC wires induce hum in output transformers?
  234. Would you use a 4 ohm tap with these speakers?
  235. Changing grid leak bias preamp to cathode bias
  236. 304tl se amp
  237. 5687 Srpp
  238. Dumb Question Brain is numb today!
  239. What a Deal!
  240. Electrons on Parade
  241. Roll Chart for 6DJ8/6922/7308 on Philco 9100 help
  242. MeiXing MC-805AA biasing
  243. whats a good diy tube preamp kit
  244. Electrons on Parade
  245. SimpleSE parts list
  246. Matched tubes or not matched
  247. wood gnomes really do live in france
  248. Pathos Classic one
  249. A Uk supplier of valve amp kits
  250. Detached getter?