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 99 100 101 102 103 104

  1. (INDIA) ECC802S/EL84 build, hardware requirements
  2. 6gw8 /ECL86 El Cheapo modifications
  3. Danielak's 300B design
  4. 6080 @ 800A Question ...
  5. Groundplane layout theory
  6. delay on for 83 mercury vapor
  7. Anyone tried "Weber Copper" SS rectifyers?
  8. Scored a bunch of tubes at HamCon
  9. AB2 Anyone else done similiar
  10. 6v6 pp amplifier
  11. Loud 60 cycle Hum from tube amp.
  12. Building a Preamp
  13. another Big One....:)
  14. JJ factory pictures ...
  15. Good enough CFs
  16. What's a good way to clean tubes w/o taking off the labeling?
  17. 6BX7 or 12B4A for small SE amp?
  18. Schematic collection posted by a kind soul...
  19. Dumb question, but...
  20. Zen Quad 22
  21. I'm baffled -- 6AK6 push-pull amp
  22. pin count question
  23. 1G3 Max Dissapation?
  24. Edcor Transformers
  25. 12EL6 preamp
  26. Request for EICO HF-20 experiences and ideas
  27. So would this work?
  28. Small-signal (or small power) pentode that can handle 400V (or more)?
  29. Are 6GM8's rare?
  30. How to lower mains voltage using resistors
  31. Music angel XD-SE EL34
  32. Potential project for some inherited transformers
  33. Car Tube Amp?
  34. Marantz 7 Preamp
  35. Euridice pramp but with 45
  36. Can 6AK6's take high voltages?
  37. Tube equal to one section of a 12AX7?
  38. HK 'Deuce front end on G2 drive output stage?
  39. Direct-coupled cathode/source follower driver in PP?
  40. CCS power supply loading..
  41. Buying vintage good tubes
  42. current tube manufacturers and or brands
  43. PSU with TL783-question
  44. Hashimoto H-20-7U for 6v6 in triode SE..?
  45. Speakers impedance
  46. mesh plate el34 (supereTNT)
  47. Tagboard amps
  48. Built the DDDAC MKII USB audio card, modified it to feed SRPP tube amp line stage
  49. 6CL6 vs. 12BY7A
  50. Suggestions for a good tube line amp
  51. 12el6
  52. High Squareness Ratio of a Transformer
  53. What causes a tube to crack?
  54. Ming Da MC-7R transformers for Quad 22 clone.
  55. SimpleSE and Switches
  56. Bias and distortion 6EM7
  57. Need ideas - 6L6GA & 6X5GT
  58. Firestone Air Chief
  59. Zenith Console find, amp suggestions?
  60. 5842 russian equiv 6S45P or 6C45PI ?
  61. bizarre or good topology idea?
  62. 12 EL6 car preamp
  63. Waxy substance leaking from vintage OPT
  64. Output transformer protection fuses
  65. 5670 SRPP DC coupled to 6S4A
  66. L as last filter element?
  67. Strong cigarette smell in a tube amp
  68. Gas coupling?
  69. Differences between nos Tesla E88CC?
  70. Harmonic parrot food?
  71. Modified 6V6 amp, 350 volt @ 250 K HZ output
  72. best current production el34
  73. Help for correct grounding a Dared VP-845
  74. two 6AL5s as a bridge rectifier
  75. JFET Switching on my tube amp
  76. Leak / Dynaco DIY
  77. S-5 tube amp kits
  78. I wanna build a CHEAP mono tube amp, need advice....
  79. 12ax7
  80. Testing for tube shorts
  81. KT66 alternatives in Quad II amps?
  82. FOR TUBE: 350V High Voltage Regulator
  83. what guideline to match pre and amp?
  84. New to list and 300B amp kits
  85. Primary impedance output transformer
  86. isolation transformer
  87. Cloning transformers
  88. EAR509
  89. Schematics of potential interest
  90. super capacitor for dc heater
  91. Need a kit ??
  92. Edcor XSM10K/15K like intestage in tube SE ?
  93. Does anyone know of an LTSpice model for 12B4?
  94. where to order V-Cap ?
  95. Input Volume Pot
  96. Red Army Power-amp
  97. Cloning a HF-60
  98. Michaelson & Austin TVA-1 info
  99. analyze a circuit...quiescence current and R-Load
  100. how to calculate SE Coupling Cap Voltage ?
  101. Mullard ECC88
  102. Engineering vs tube rolling
  103. Diode Peak working voltage ?
  104. Help wanted; combining topologies to "new" 807 PPP design ?
  105. Hybrid Amp
  106. transformer information need help
  107. Replacing a cathode resistor with a CCS
  108. DC offset and relays
  109. Sourcing JJ 300B tubes
  110. Decware Vs Rogue Audio
  111. Global Feedback on Mikael's KT88SE
  112. Generating big voltage swings without 'iron'
  113. 6AS7G Grid Voltage ??
  114. Next project 6EM7
  115. Anyone built a tube-based (6BE6 or 6HS8) volume control?
  116. What to replace these caps with?
  117. 5691 plate value ratings
  118. Bussiness trip to Singapore
  119. Paco mike tube amp
  120. Emergency help with Wes' amp
  121. 2A3 without cathode bypass cap???
  122. Best way to burn-in my new SE xfrmers on the bench?
  123. Need help with my ST70
  124. 6sn7 direct coupled and transformer coupled
  125. Grounded Grid Preamp
  126. Beginner WLTM fixer of 300B hum...
  127. Bell 2420 tube amplifier. Bias question. 6v6 push pull
  128. How to figure gain on split-load with positive feedback?
  129. Mikaels KT88SE & VTV Octal Linestage
  130. idiot needs help making sense of funny squigles - Filmosound
  131. Custom Transformer?
  132. How are this schematic ?
  133. Need help with a Tube preamp Kit (6Z4, 6N3)
  134. data sheets for 7239 and 8068
  135. John Swenson's New BDT preamp
  136. no coupling caps
  137. 6SN7GT brand
  138. tube voltage regulator error amp
  139. driving 845's
  140. Just ordered a Korg EMX-1
  141. Maida for Screen Supply
  142. cracked el34 -> replacement squeals
  143. SimpleSE goes Push Pull
  144. Possibly defective Mullard 12AT7?
  145. Basic measurement question re: shorts
  146. EL84 DC 10Y Project
  147. TubeCad Journal FET CCS
  148. russian tube
  149. pchw 's tube hybrid amp accurian info
  150. 3c24 se amp
  151. schematic of firstsoundaudio pre amp
  152. 300b-98c mesh bias
  153. 6SN7 coin base tubes
  154. tube rectifiers and electrolytic reforming w/ variac
  155. I'm running my leak stereo 20 single ended. WHAT???
  156. Varnish on old transformer
  157. SE parallel output questions
  158. Darius Loftin White explained
  159. New Sensor's "Mullard" EL34 reissue?
  160. Best Way to Control Plate Voltage?
  161. Any Mods for a Noisy Leak Point one Stereo?
  162. tubes for 87db spendor
  163. 4v for rectifier tube
  164. Need help rebuilding old PA amplifier!
  165. inverted?
  166. Old Tube Radio - Restoration Project
  167. quick - need parts retailers Wash DC area
  168. H&K Tubeman Circuit Questions (added schematics!)
  169. Raising filament winding above cathode with a EZ81 in the circuit OK?
  170. Problem with Beard Audio
  171. 100K pot in a preamp?
  172. Power transformer for 6883B tube uses?
  173. Rca Mi-38188
  174. C- Battery Supply
  175. Seperating Preamp from Amp in Integrated Amps
  176. Please help me in getting rid of the buzz.
  177. Tube Phono stage dilema
  178. Grounding with single tap secondary...
  179. VTL - Manley stereo 75
  180. What about KT100 in SE ?
  181. Tube amplifier kit needed to drive low efficiency speaker
  182. feeling very pleased with myself
  183. Quicksilver Retube
  184. My Totem Arro 4 ohm load on KT-88 based amp
  185. using flash camera (and maybe laptop screen or fluorescent) inverters to power tubes
  186. for fans of the EL38 - the E3375
  187. 811a Opt
  188. Pure class-A or class AB?
  189. 12B4 PP Full Differential Amp Notion
  190. My opinion on Audio Note M10 schematic - Japan version
  191. Help, I need your advice - What Next?
  192. Sloppy, Unreadable, Childlike schematics
  193. Anybody going to tomorrow's NVCF fair in Leamington?
  194. Pete's SE E-Linear
  195. 0A2 or 0D3 ?
  196. Counterpoint SA7 modification.. shottky diodes.. thoughts?
  197. LTP feedback
  198. Need help with my super six...
  199. EL509 as a CF
  200. SE Diode
  201. 6FD7, 6BM8 or other
  202. My OLD Project....... cheap tube audio project!!!
  203. tube noise
  204. Fisher 400 questions
  205. RL12P35 amplifier
  206. 6AS7 ppp
  207. 6j5 dc coupled to 12b4a as 2a3 driver
  208. The sound of different EL34s.
  209. Output transformer and FB
  210. Triode curves for 6AU5
  211. 26/el-84 amp possible..?
  212. Vaic 52B monos
  213. Hour Meter for a Tube Amp..
  214. volume pot replacement
  215. Ampex 600
  216. Tubing Testing...how are these numbers?
  217. No-R No-C Power Supply
  218. Are my Speakers efficient enough for my Amp?
  219. doesn't sound quite right
  220. 6DJ8 alternates?
  221. Is this the dumbest question?
  222. Fuse between B+ and output transformer?
  223. Telefunken Double Label Error...Ever seen this?
  224. 300B Summer Build Question
  225. 1,25kW tube amplifier/modulator
  226. 12sn7 heater-cathode voltage
  227. Toroidal output transformers with screen drive- why not?
  228. Help With 6v6 Spice Model
  229. Different 5AR4's have different voltages and warm up time.
  230. Edcor OPT in S5 Electronics K-16LS kit?
  231. SRPP Powersupply, replace R with choke ?
  232. First tube amp
  233. Best low-signal direct heated triodes?
  234. 25-position switched attenuator using a pair of 5-position switches?
  235. Help with dead Jadis Defy7 Amp
  236. Heads up! New unbuilt Dynaco ST-70 kit on ebay
  237. Remote control for integrated tube amp
  238. EL34 pp "fixed" bias is wandering
  239. US sources Russian Surplus
  240. Convert RCA tuner/pre to high perf AM only
  241. Metal Can 6CA7s
  242. Bypassing B+ in PP amp
  243. Tube shunt regulator for phono amp
  244. speaker that can be driven by tube amp
  245. Need help with volume control.
  246. Flame triodes!
  247. make OPT
  248. Tube GU50 made in Russia
  249. Expectations of new tube specs
  250. DC on preamp input

Content Relevant URLs by vBSEO 3.3.2