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

  1. recommend operating point for EL84?
  2. First time builder, need advice.
  3. Tube Depot...
  4. schematics
  5. BOGEN MX60A Schematic
  6. Help with 1626 PSE Amp needed
  7. OTL question.
  8. diy tube amp
  9. Load line for CF
  10. DIY Vacuum tube amp
  11. Hammond or James OPT for SE 300B ?
  12. PSE 6550 schematic needed
  13. Schematic for Siemens "Table" Amplifier
  14. power supply for 6922 mu follower
  15. Dead simple tube circuit
  16. Any info on a Musical Fidelity X-Pre?
  17. Autoformer CF amp
  18. 2a3 or otl on an fullrange coral
  19. My New Project Completed
  20. SE el84
  21. Many thanks!
  22. Switching power supply & filament
  23. tube phono amp req'd
  24. Had a strange problem today...
  25. wsw siemens ultralinear 815 410 G !!?!
  26. Bottlehead Gear
  27. Amp, Stange temporary buzz, what is that?
  28. 2a3 schematic
  29. NEWBIE needs help-static in one channel of preamp
  30. Vintage speaker screw outs to 1/4" plug
  31. Flashing EL34
  32. Sovtek 2A3 tolerances / defected tube?
  33. Massive Parallel Operating
  34. filter circuit for 866a
  35. reasonable powered simple amp
  36. 6c19pi ?
  37. S5 Electronics 139 $ tube amp
  38. 12AU7 or 12AT7 instead of 12AX7 ?
  39. Tube Pre-Amp < $200
  40. Modification of 2A3 SE Circuit
  41. beta followers
  42. Q: Stereo Amp / Dual PS Chokes
  43. using Mosfets as diode in PS
  44. Sonic Frontiers Power 2SE
  45. Curcio daniel
  46. Ecc89 / Ecc189
  47. Magnavox
  48. Tube Preamp 'Clone' PCB copys on ebay (Marantz, McIntosh, etc)
  49. tube rectifier life expectancy
  50. Metal VS Glass
  51. does anybody know this transfo?
  52. need help finding tube make
  53. VTL deluxe 300 amps - adjustment question
  54. Building Marshall Plexi
  55. help converting conrad johnson MV-55 into triode!
  56. Does more tubes = more filter capacitors?
  57. 6V6 GT, Do they worth playing with them ??
  58. 12ax7 > 6sn7 > 300b
  59. calculating NFB dB
  60. PCL806 is equivalen to PCL86?
  61. anti digitalizing process
  62. Telefunken?
  63. Bogen MX30A
  64. base for amp
  65. Unbalanced - Balanced Tube Preamplifier wanted
  66. rusty iron- need help :)
  67. A new/old CCS?
  68. Rogers Cadet III - balance control
  69. Anyone tried Van Alstine's OmegaStar Bridge?
  70. Plasma/ion tweeters
  71. PP 6B4G stereo amp filament question
  72. tube tone control?
  73. trio amp up in smoke-ya really up
  74. Ideas for SE amp with this tube
  75. regulated PS - with Zener diode
  76. Filament voltage of PP2A3
  77. Dennis Boyle, Alliance Audio
  78. How do I replace this 40+ year old selenium rectifier?
  79. please advise on operating point of a 5687
  80. Output Transformer Question
  81. Stepped attenuator
  82. PP2A3 amp options
  83. Need advice: Want to learn Vacuum tubes
  84. AVO CT-160 --- Help
  85. Needed schematic....
  86. Az1 mounted on wood!
  87. Dynaco A450 specs
  88. Ecc186= SQ Ecc82
  89. tube amp kit on 230 v???
  90. some tubes
  91. ppp el84 fixed bias schematics
  92. Tube buffered NIGC trafo thoughs?
  93. driver stage
  94. PS cap placement/type
  95. Vintage OPT
  96. simple, single-ended project
  97. 6sn7 - 6bx7 - sv811-3 amp
  98. I look for a correct driver stage
  99. PCB tubes amp?
  100. XLR to 1/4" TRS?
  101. Umbilical Connector Suggestions
  102. Good Inexpensive Starter Amp Kit
  103. tube rectified preamp schematic
  104. oxygen free interconnects
  105. how to calculate feedback resistor
  106. Topaz Isolation Tranny
  107. 4E27A monster se amp??
  108. 6V6 Parafeed?
  109. Old Tranny Potting Material
  110. Brimar ECC81
  111. PCB mounting B7G sockets
  112. Directly heated cathodes, but why?
  113. SET kit for newbie
  114. High Power 805 Triode based amplifier
  115. DigitalSignalProcessing -&gt; future?
  116. 5v Damper Diode?
  117. Tubes in Class D amplifiers
  118. Universal power supply UIP-1 from former USSR schematics
  119. Building a fender twin reverb in the UK
  120. First project for Proac loudspeakers
  121. transformers
  122. cathode battery bias questions
  123. tube amp project
  124. AN DacKit 1.2 Upgrade Ideas
  125. What are the requirements for driving a 300B?
  126. 900v. 100ma. Power supply for 813 tube amplifier
  127. Chassis Internal Height / Pot Clearance
  128. Bogen help
  129. Tube tester questions
  130. 211 VT-4C Good Simple SE Schematic
  131. mosfet in regulated PS.
  132. Hammond Transformer in Toronto
  133. 6n30pi plate resistance ?
  134. balanced input stage
  135. A better triode strap?
  136. Chinese new 845
  137. what tube manufacture of 6550??
  138. Low frequency noise in a 12B4 preamp
  139. Difference between CK6528 and 6528A ?
  140. 6L6 help needed
  141. Hawksford style error correcting output
  142. SE UL OT - primary wired in reverse
  143. tube bias pot question
  144. Transformer supplier in Australia
  145. Newb here
  146. Anyone familiar with James output transformers?
  147. What Limits Freqency response in a simple tube amp like the zen?
  148. Grid driven (ETM) KT88 SE amp design - final works on paper
  149. Sansui 1000 outputs?
  150. The overlooked is often cheaper
  151. Fender 6L6 Amp... HELP!!!
  152. Tube amp design characteristics?
  153. ecc40 or 76 as driver for 2A3
  154. toroids on top of each other ?
  155. Out Of Order
  156. Pinging JAX (Sweden)
  157. Common Cathode 6922 output impedance?
  158. Blue Velvet Preamp
  159. Has anyone got any plans for a car amp?
  160. Tube Radio Kit
  161. New Tube Porn!!
  162. Need someone to host my "TUBE PORN" images.
  163. Trying to understand preamp schematic...
  164. 6C33C schematic
  165. We have liftoff!!!! Houston, all systems are go!
  166. Dynaco ST70
  167. Is Tesla still going?
  168. yet another 12b4a
  169. Tubes load resistance and output trans impedance
  170. Antique schematic help please.
  171. 12b4a wiring question
  172. $1 AMP find
  173. Heater winding load question.
  174. Direct Coupling Modulated Bias (SET)
  175. Amp with 6c33
  176. Ideas for amp rebuild...
  177. simple tube amp
  178. What's the ideal tube amplifier for me for max. $660 , maybe a kit ?
  179. CCS design help!!
  180. Proposed Transfomer/Valve Layout
  181. Mic input for guitar?
  182. My darling is giving me hell!
  183. EL84 or 6v6 or something else?
  184. Borbely hybrid phono
  185. SS power supply question
  186. RCA Tube Radio...circa 1930-40
  187. New project on 807
  188. SE design using 10k OPTs
  189. Biasing a cathode follower?
  190. Lower Distortion Alternatives to 12AT7 & 12AU7 ?
  191. Oil in Paper in oil capacitor.
  192. Valves for Crackly Fender Hot Rod
  193. Information needed
  194. Hybrid
  195. heavy metal, low power guitar amp?
  196. found two boxes of GE 6CL6 tubes
  197. Please help me compare 2 cattle of fish...
  198. Vacuum Tube Valley 6SN7 preamp
  199. SET Power Supply Regulation
  200. TubeCAD
  201. 60 Hz noise in modified Audible Illusions M2B
  202. Anodized Aluminum and Glue/Epoxy
  203. shared parts between channels
  204. May I use 5K transformer for Dynaco III amp?
  205. First amp build questions
  206. Help needed changing from srpp5814a to srpp12bh7a
  207. ok, i'll try and make it simple.
  208. Sure, copy an amp. . . It'd work but I'm looking for something different.
  209. Half a bee Philosophically. . . Er sorry Its actually about ECC83 amps
  210. Bogan schematic for HO 50 power Amp
  211. Gibson GA-15RV tube amp
  212. Can VT-185 be applied in audio circuit?
  213. Best PP transformer for 2A3 amp?
  214. help in finding tubetester meter value
  215. B+ Voltage
  216. CCS Conceptual Qs, Using Gary Pimm CCS as Example
  217. Is there a no/gain preamplifier schematic using high-distortion EC90?
  218. marshall jcm hifi?
  219. Klystron??
  220. single ended 2a3 project
  221. Visit Shuguang tube factory(many pics)
  222. AKAI M8 Tube R-R input problem
  223. How do Sovtek 6L6WGCs stand up?
  224. Hammond SE Transformer question
  225. Tube Safety
  226. old console
  227. AB1 or 2?
  228. help with restoring amp
  229. Tube preamplifier with PCC88
  230. Tube amplifier 300b proyect
  231. linestage needed
  232. 5687 Tube - best choice
  233. Fisher 500c - Trouble shooting tuner section
  234. Morgan Jones book to swap
  235. gu-48 PP
  236. Taylor 45b Gm Problem
  237. 5687, ECC99, 7119, or E182CC??
  238. Bell Sound Systems Old Gem
  239. Mu-follower current capability?
  240. Bogen M330A Tube PA Amp for Guitar
  241. Filaments voltage question
  242. Is it Good to regulate supplies?
  243. Damper Diodes
  244. Fisher X-100 transformers
  245. Some questions about C4S CCS adjustment.
  246. Lowther LL18S stereo power amplifier - circuit diagram?
  247. Problem with mouting choke underneath chassis?
  248. How accurate is RMAA distortion measurement?
  249. 801
  250. CROFT Eminent Audio

Content Relevant URLs by vBSEO 3.3.2