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. Eight 807's in Push Pull?
  2. Working with Current O/P DAC Chips
  3. Unison research Preludio schematic
  4. Rewinding Power transformer
  5. Information needed on RCA SPECIAL RED TUBES
  6. Score?
  7. Herron phono
  8. tube preamp + SS power amp.
  9. Puzzler
  10. HI-Fi 6p13p
  11. Resistor values
  12. To chassies SE amp,PSU question
  13. Grounding & board Layout questions
  14. Look for a beefy driver tube.
  15. ECC81
  16. 5687 v.s. 6922 preamp/xover
  17. amorphous iron core good or not
  18. Pre-Amp
  19. submini tube preamp is a success
  20. Roll off frequency.
  21. Materials Technology for Electron Tubes by Walter H. Kohl
  22. Grundig TK 46 manual
  23. I'm anti-expensive audio parts but man, a good capacitor can make a difference
  24. How to determine a tube is shorted?
  25. Power supply problem
  26. SS power trans for tube experiments
  27. how to set output current on G Pimm's CCS circuit?
  28. Tube testing questions
  29. Push Pull Output Transformer wiring problem
  30. shunt regulator using VR tubes (with ccs like g pimm) and circuit load
  31. Stepped attenuators vs. Carbon pots
  32. hum/buzz with pot all the way up
  33. Cap and resistor types in guitar tube amp
  34. VacuTrace ... In Chicago?
  35. Lifesaver question on earthing
  36. Affordable, but good attenuators?
  37. Gu50 Set ?
  38. mounting an EL34 upside-down
  39. Direct coupled PP 2a3 amp - maths needed!!
  40. My 1st scratch build complete......
  41. Very Basic EL84 or EL34 DIY Amp
  42. Curcio Daniel Preamp Mods?
  43. Tube designs: 45 driving 45/2a3/300b?
  44. Adding secondary of output transformer into cathodes of output stage ? Eico ST-70
  45. Marantz 8 B : Output Transformer
  46. has anyone used a fan on their project?
  47. Audio Research SP12 heater arrangement
  48. tv damper diodes
  49. volume pot quite close to a tube - is this okay?
  50. UTC s42 special series
  51. 6H30P preamp schematics
  52. Digital potentiometer corrupt tube amps
  53. Alternative filament supply for 01A line stage
  54. Lamination Size
  55. Yaqin MC10L and KT88
  56. Help me read tube data sheets
  57. Quick Question (Driving 6L6GC's)
  58. Cause for concern -- scorch mark in tube
  59. why not 10k pot
  60. Dynaco Stereo 70 Output Transformer
  61. 6CJ3 rectifier or 6D22S rectifier
  62. Back-to-Back trannies
  63. Spring Reverb transformer
  64. Hamfest in Toronto area next weekend
  65. st70 bass response
  66. Triode "Champ" transformer v Edcor
  67. Low vs High aka Series vs Parallel Filaments
  68. Bogen monster MO200A schematic
  69. The Great Tempe Audio Shootout
  70. opinions on this p-p kt88
  71. Any XLR Tube Buffer Plans?
  72. Mystery transformers
  73. I need help with my next project
  74. A thought on Cathode feedback
  75. EL34 SE, direct coupled
  76. Ccs
  77. Hybrid amp: ECH83 + TDA2030A
  78. Leaving tube preamp always powered on.
  79. Variable 6922 heater to cathode voltage limit...?
  80. Is this risky?
  81. What to do with some WE tubes and others
  82. 6B4G SRPP
  83. pentode in triode mode SE vs a DHT SE like 2a3/300b
  84. dynakit decware bottlehead ... which to pick
  85. 6JC6 triode strapped?
  86. Searching for Raw Turrets
  87. Help.. EZ81 power supply diagram
  88. Ear 8l6
  89. Bogen H-30 guitar mod
  90. Voltage measurements from a blown 5AR4 vs. good 5Y3
  91. Sanity check on a 2A3 ultrapath with Pentode driver
  92. Star ground with dissimilar metals: concern?
  93. 5AR4 marked as 5V4GA?
  94. Calculating cathode bypass cap.
  95. Please need help! TUBE BIAS PROBE
  96. Aikido Phono Stage
  97. Using an El84 as a driver
  98. Transfromer value of this 300B circuit
  99. Chassis Layout & PS questions
  100. help needed for 1st DIY tube amp - Sakuma 845 SE
  101. Ideas for 4v filament triodes/pentodes
  102. Comments on Power Amp Viability
  103. Balanced active crossover advice
  104. The Tube Center
  105. Help1 with a 3 channel 2a3 amplifier
  106. volume control hum/noise
  107. PS choke magnetic induction
  108. Circlotron power supply question
  109. Autoformer as choke?
  110. E182CC
  111. Fender Hotrod Deville 212
  112. Grundig Fine Arts OTL Amplifier
  113. Damper diodes, 6ax4 and or 6w4?
  114. Knight 333 / Pioneer SX 34B info needed.
  115. Gargantuan Linestage Output Capacitors
  116. Quad II Restoration
  117. Help identifying a tube.
  118. Tube filaments in series?
  119. Design of Resonant Input Choke PSU
  120. Dissimilar triode
  121. How important is the quality of a triode used as a cathode follower
  122. EL34B tubes
  123. Why not so common to split dual triodes between channels?
  124. In search of power supply schematic for phono preamp
  125. General Electric vs Toshiba 6L6's
  126. Audio Research Dual 75 Capacitor Source?
  127. Choosing A Cathode bypass capacitor
  128. 12AU7 SRPP buffer suggestions
  129. Pentode/triode switch question
  130. Lundahll 1669A Secondary voltage???
  131. Substituting tube rectifiers by silicon
  132. newbie question: is the connection to the output xformer somewhat odd?
  133. All quiet on the SN front - about darned time!
  134. Estimating power output
  135. Looking for KT88 Amplifier Schematic by Mikael Abdellah
  136. Comments on passive pre and cables
  137. curvecaptor
  138. 6b4g pushpull build!newbie
  139. Need help; I have "dog leg" shaped waveform on my amp
  140. Output Transformer Question?
  141. Urgent OT HELP needed ASAP please
  142. Questions on Triode Strapping
  143. Morgan Jones BALANCED?
  144. What are your RFI precautions?
  145. Pentodes without cathodes?
  146. help me
  147. Good quality 6600 CT OT
  148. Local Hamfest score!!!
  149. Unknown Transformer
  150. S5 11g help
  151. 6SN7 pre-amp
  152. These tube can be use for amplifier
  153. Any pitfalls to choke derived CT?
  154. Audio Research D76A bias adjustment
  155. I meet Mr. Morgan Jones
  156. st70 electrolytic caps
  157. Thank you SY
  158. el84 1 channel stopped working help
  159. Help! Weak Bass!
  160. never say never - 300B amps...
  161. 6aq5 Screen resistor?
  162. L. Tatro farm radios from 1930's.
  163. Published/DIY ultra-low THD designs?
  164. EL84 SE auto bias
  165. Kofi Annan in: "Oscillatin' in the Bevois Valley'"
  166. Subwoofer connections
  167. 6/30L2 - What to do with them ?
  168. PIONEER SA-810 Tube Amp Schematics
  169. EF86 Gm
  170. EL84/6BQ5 Ultra-Linear Push-Pull Recomendation
  171. Aria 6P14 makeover.
  172. switch for paralelled tube
  173. Curvecaptor with pentodes??
  174. Ground point for HF decoupling cap?
  175. Cancelling Harmonics
  176. Quiet Tube
  177. LM385 Adjustable voltage ref. diode as LED bias?
  178. Tubed Expression Pedal
  179. Any spice models around for AA5-esque battery tubes?
  180. Where to connect shielding
  181. Bogen K15 convert to guitar amp
  182. Help 805 As that the friend makes to straighten even gallbladder machine
  183. studiogear of the beatles
  184. 6AK5 Triode Curves
  185. twisted pair signal, source selector and ground buss???
  186. Tiny Amplifiers
  187. A newly aquired Hum
  188. many jan tubes
  189. is this the correct way of adding a volume control?
  190. Basic DIY Valve Phono Stage
  191. 5879 Experience?
  192. personal jobs
  193. Wanted Triode strapped curves for pentode of ECL82.
  194. source selector / volume hum in Aikido
  195. DHTs and Cathode Bias
  196. Best SET driver stage with lots of B+?
  197. Tube Library Pspice error
  198. referencing DC heater to B+
  199. Double floating Circlotron
  200. Supply Capacitors ?
  201. Sakuma style Tango project
  202. MC10L is good or not
  203. Eico HF-20 & Claus Byrith PS voltage & power draw
  204. Voltage Regulator Tubes
  205. EL34 triode-connected grounding-grid curves?
  206. Pls help me understand AR SP6 circuit
  207. good begginer project (ax84 v.s. boozhound)
  208. I'm looking for 417a/5842 Preamp Schematic without any Transformer, any suggestion ?
  209. Trouble in a new DIY amp.
  210. Suitable Transformers
  211. PT winding calculations HELP
  212. How to measure frequency response with a PC?
  213. Pspice Tube Generation Software
  214. Tektron tube amplifier Italy made
  215. What to do with 2x Stancor A3830?
  216. REQ: Schematics and tweaking tips
  217. Jadis Da 60 & 80
  218. 6L6 for a beginner, plus ECL86/6GW8
  219. Leak Stereo 20 clone? possibly with 6V6?
  220. Any comment on Vacuum State dpa300b??
  221. Radiotron Designers Handbook
  222. Kofi Annan in: "Buggin' the 'S' Outta Me!"
  223. 12B4 eqivalent : sonics-wise ?
  224. Any Eimac Scematics?
  225. What's a 6SL7 Good For?
  226. Where Can Buy 6c41
  227. would twisted pair from a network cable be suitable as hook-up wires inside an amp?
  228. use a 45 to drive a 45 ?
  229. Regulated heater reference
  230. Heater Elevation, how high?
  231. 6201 alternative
  232. 4V Tentlabs filament supply
  233. Difference between stereo & 2 monoblocks
  234. Parallel operation of triodes.
  235. input tubes using 6922?
  236. Looking for choices - affordable PP OPTs
  237. removing HF damping pF caps for guitar
  238. HH Scott Transformer #s
  239. Tips for rebuilding this amp?
  240. Need advice - what can I build with this power transformer?
  241. Source for high voltage electro caps
  242. differences between K-12M and K-12G kits?
  243. 12B4 Line Stage with Fixed Bias?
  244. split push-pull output stage
  245. any thoughts/explanation on the power supply for this circuit?
  246. Where to begin on a PP?
  247. ProAc Tablette 50 Speakers
  248. Recognizing wiped out ECC's 81,82,83
  249. So tell me.... how did YOU get into tubes??
  250. 7189 or 7819 el84 tube?

Content Relevant URLs by vBSEO 3.3.2