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

  1. Hum on a choke loaded stage
  2. SE Transformer question
  3. Design question - How to make amp porn visible?
  4. Leak Stereo 20 - Johan's Square Wave Theory
  5. K-12G First Time Build
  6. Vishay vt52-55 resistors in a tube amp
  7. EL84 Push-Pull ccs bias
  8. Eight 807's in Push Pull?
  9. Working with Current O/P DAC Chips
  10. Unison research Preludio schematic
  11. Rewinding Power transformer
  12. Information needed on RCA SPECIAL RED TUBES
  13. Score?
  14. Herron phono
  15. tube preamp + SS power amp.
  16. Puzzler
  17. HI-Fi 6p13p
  18. Resistor values
  19. To chassies SE amp,PSU question
  20. Grounding & board Layout questions
  21. Look for a beefy driver tube.
  22. ECC81
  23. 5687 v.s. 6922 preamp/xover
  24. amorphous iron core good or not
  25. Pre-Amp
  26. submini tube preamp is a success
  27. Roll off frequency.
  28. Materials Technology for Electron Tubes by Walter H. Kohl
  29. Grundig TK 46 manual
  30. I'm anti-expensive audio parts but man, a good capacitor can make a difference
  31. How to determine a tube is shorted?
  32. Power supply problem
  33. SS power trans for tube experiments
  34. how to set output current on G Pimm's CCS circuit?
  35. Tube testing questions
  36. Push Pull Output Transformer wiring problem
  37. shunt regulator using VR tubes (with ccs like g pimm) and circuit load
  38. Stepped attenuators vs. Carbon pots
  39. hum/buzz with pot all the way up
  40. Cap and resistor types in guitar tube amp
  41. VacuTrace ... In Chicago?
  42. Lifesaver question on earthing
  43. Affordable, but good attenuators?
  44. Gu50 Set ?
  45. mounting an EL34 upside-down
  46. Direct coupled PP 2a3 amp - maths needed!!
  47. My 1st scratch build complete......
  48. Very Basic EL84 or EL34 DIY Amp
  49. Curcio Daniel Preamp Mods?
  50. Tube designs: 45 driving 45/2a3/300b?
  51. Adding secondary of output transformer into cathodes of output stage ? Eico ST-70
  52. Marantz 8 B : Output Transformer
  53. has anyone used a fan on their project?
  54. Audio Research SP12 heater arrangement
  55. tv damper diodes
  56. volume pot quite close to a tube - is this okay?
  57. UTC s42 special series
  58. 6H30P preamp schematics
  59. Digital potentiometer corrupt tube amps
  60. Alternative filament supply for 01A line stage
  61. Lamination Size
  62. Yaqin MC10L and KT88
  63. Help me read tube data sheets
  64. Quick Question (Driving 6L6GC's)
  65. Cause for concern -- scorch mark in tube
  66. why not 10k pot
  67. Dynaco Stereo 70 Output Transformer
  68. 6CJ3 rectifier or 6D22S rectifier
  69. Back-to-Back trannies
  70. Spring Reverb transformer
  71. Hamfest in Toronto area next weekend
  72. st70 bass response
  73. Triode "Champ" transformer v Edcor
  74. Low vs High aka Series vs Parallel Filaments
  75. Bogen monster MO200A schematic
  76. The Great Tempe Audio Shootout
  77. opinions on this p-p kt88
  78. Any XLR Tube Buffer Plans?
  79. Mystery transformers
  80. I need help with my next project
  81. A thought on Cathode feedback
  82. EL34 SE, direct coupled
  83. Ccs
  84. Hybrid amp: ECH83 + TDA2030A
  85. Leaving tube preamp always powered on.
  86. Variable 6922 heater to cathode voltage limit...?
  87. Is this risky?
  88. What to do with some WE tubes and others
  89. 6B4G SRPP
  90. pentode in triode mode SE vs a DHT SE like 2a3/300b
  91. dynakit decware bottlehead ... which to pick
  92. 6JC6 triode strapped?
  93. Searching for Raw Turrets
  94. Help.. EZ81 power supply diagram
  95. Ear 8l6
  96. Bogen H-30 guitar mod
  97. Voltage measurements from a blown 5AR4 vs. good 5Y3
  98. Sanity check on a 2A3 ultrapath with Pentode driver
  99. Star ground with dissimilar metals: concern?
  100. 5AR4 marked as 5V4GA?
  101. Calculating cathode bypass cap.
  102. Please need help! TUBE BIAS PROBE
  103. Aikido Phono Stage
  104. Using an El84 as a driver
  105. Transfromer value of this 300B circuit
  106. Chassis Layout & PS questions
  107. help needed for 1st DIY tube amp - Sakuma 845 SE
  108. Ideas for 4v filament triodes/pentodes
  109. Comments on Power Amp Viability
  110. Balanced active crossover advice
  111. The Tube Center
  112. Help1 with a 3 channel 2a3 amplifier
  113. volume control hum/noise
  114. PS choke magnetic induction
  115. Circlotron power supply question
  116. Autoformer as choke?
  117. E182CC
  118. Fender Hotrod Deville 212
  119. Grundig Fine Arts OTL Amplifier
  120. Damper diodes, 6ax4 and or 6w4?
  121. Knight 333 / Pioneer SX 34B info needed.
  122. Gargantuan Linestage Output Capacitors
  123. Quad II Restoration
  124. Help identifying a tube.
  125. Tube filaments in series?
  126. Design of Resonant Input Choke PSU
  127. Dissimilar triode
  128. How important is the quality of a triode used as a cathode follower
  129. EL34B tubes
  130. Why not so common to split dual triodes between channels?
  131. In search of power supply schematic for phono preamp
  132. General Electric vs Toshiba 6L6's
  133. Audio Research Dual 75 Capacitor Source?
  134. Choosing A Cathode bypass capacitor
  135. 12AU7 SRPP buffer suggestions
  136. Pentode/triode switch question
  137. Lundahll 1669A Secondary voltage???
  138. Substituting tube rectifiers by silicon
  139. newbie question: is the connection to the output xformer somewhat odd?
  140. All quiet on the SN front - about darned time!
  141. Estimating power output
  142. Looking for KT88 Amplifier Schematic by Mikael Abdellah
  143. Comments on passive pre and cables
  144. curvecaptor
  145. 6b4g pushpull build!newbie
  146. Need help; I have "dog leg" shaped waveform on my amp
  147. Output Transformer Question?
  148. Urgent OT HELP needed ASAP please
  149. Questions on Triode Strapping
  150. Morgan Jones BALANCED?
  151. What are your RFI precautions?
  152. Pentodes without cathodes?
  153. help me
  154. Good quality 6600 CT OT
  155. Local Hamfest score!!!
  156. Unknown Transformer
  157. S5 11g help
  158. 6SN7 pre-amp
  159. These tube can be use for amplifier
  160. Any pitfalls to choke derived CT?
  161. Audio Research D76A bias adjustment
  162. I meet Mr. Morgan Jones
  163. st70 electrolytic caps
  164. Thank you SY
  165. el84 1 channel stopped working help
  166. Help! Weak Bass!
  167. never say never - 300B amps...
  168. 6aq5 Screen resistor?
  169. L. Tatro farm radios from 1930's.
  170. Published/DIY ultra-low THD designs?
  171. EL84 SE auto bias
  172. Kofi Annan in: "Oscillatin' in the Bevois Valley'"
  173. Subwoofer connections
  174. 6/30L2 - What to do with them ?
  175. PIONEER SA-810 Tube Amp Schematics
  176. EF86 Gm
  177. EL84/6BQ5 Ultra-Linear Push-Pull Recomendation
  178. Aria 6P14 makeover.
  179. switch for paralelled tube
  180. Curvecaptor with pentodes??
  181. Ground point for HF decoupling cap?
  182. Cancelling Harmonics
  183. Quiet Tube
  184. LM385 Adjustable voltage ref. diode as LED bias?
  185. Tubed Expression Pedal
  186. Any spice models around for AA5-esque battery tubes?
  187. Where to connect shielding
  188. Bogen K15 convert to guitar amp
  189. Help 805 As that the friend makes to straighten even gallbladder machine
  190. studiogear of the beatles
  191. 6AK5 Triode Curves
  192. twisted pair signal, source selector and ground buss???
  193. Tiny Amplifiers
  194. A newly aquired Hum
  195. many jan tubes
  196. is this the correct way of adding a volume control?
  197. Basic DIY Valve Phono Stage
  198. 5879 Experience?
  199. personal jobs
  200. Wanted Triode strapped curves for pentode of ECL82.
  201. source selector / volume hum in Aikido
  202. DHTs and Cathode Bias
  203. Best SET driver stage with lots of B+?
  204. Tube Library Pspice error
  205. referencing DC heater to B+
  206. Double floating Circlotron
  207. Supply Capacitors ?
  208. Sakuma style Tango project
  209. MC10L is good or not
  210. Eico HF-20 & Claus Byrith PS voltage & power draw
  211. Voltage Regulator Tubes
  212. EL34 triode-connected grounding-grid curves?
  213. Pls help me understand AR SP6 circuit
  214. good begginer project (ax84 v.s. boozhound)
  215. I'm looking for 417a/5842 Preamp Schematic without any Transformer, any suggestion ?
  216. Trouble in a new DIY amp.
  217. Suitable Transformers
  218. PT winding calculations HELP
  219. How to measure frequency response with a PC?
  220. Pspice Tube Generation Software
  221. Tektron tube amplifier Italy made
  222. What to do with 2x Stancor A3830?
  223. REQ: Schematics and tweaking tips
  224. Jadis Da 60 & 80
  225. 6L6 for a beginner, plus ECL86/6GW8
  226. Leak Stereo 20 clone? possibly with 6V6?
  227. Any comment on Vacuum State dpa300b??
  228. Radiotron Designers Handbook
  229. Kofi Annan in: "Buggin' the 'S' Outta Me!"
  230. 12B4 eqivalent : sonics-wise ?
  231. Any Eimac Scematics?
  232. What's a 6SL7 Good For?
  233. Where Can Buy 6c41
  234. would twisted pair from a network cable be suitable as hook-up wires inside an amp?
  235. use a 45 to drive a 45 ?
  236. Regulated heater reference
  237. Heater Elevation, how high?
  238. 6201 alternative
  239. 4V Tentlabs filament supply
  240. Difference between stereo & 2 monoblocks
  241. Parallel operation of triodes.
  242. input tubes using 6922?
  243. Looking for choices - affordable PP OPTs
  244. removing HF damping pF caps for guitar
  245. HH Scott Transformer #s
  246. Tips for rebuilding this amp?
  247. Need advice - what can I build with this power transformer?
  248. Source for high voltage electro caps
  249. differences between K-12M and K-12G kits?
  250. 12B4 Line Stage with Fixed Bias?

Content Relevant URLs by vBSEO 3.3.2