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 99 100 101 102 103 104 105

  1. Simple tube phono stage
  2. Tube phono amp repair/redesign help wanted
  3. tube newbie needs guidance
  4. Interesting linestage optimizing ideas
  5. Powered up my Lafayette 224A for the first time!
  6. Hickok Upgrades
  7. Passive BP filter sim results
  8. 100mA heater tubes for phono
  9. Audiotester + M-audio - info + question
  10. Indestructible HV hybrid regulator!
  11. yet another modified 5-20 amplifier
  12. help with OT for 15 watt tube amp
  13. Power supply for 12SL7 phono preamp
  14. few questions
  15. mystery 5881
  16. does lower B+ cause scratchy distortion?
  17. SY please keep us updated about your site
  18. Cleveland Ohio members?
  19. Scope tricks for detecting rectifier/choke switching
  20. To choke or not to choke
  21. Tube rectified LC PS for 6SN7 Aikido - choke DCR question
  22. Convergent Audio Technology (CAT) SL-1 preamplifier
  23. Very low current CCS?
  24. Morgan Jones' E88CC Phono
  25. pse help, unity triode as a phase inverter
  26. variable capacitor volume control
  27. What to do with P-P transformer ?
  28. 837 tube for SE Amplifier
  29. calculating transformer current draw question
  30. glass audio 1995 "Single Ended Glory"
  31. Manual for Heathkit AA-121 Power Amp
  32. Low gain triode recommendation plz
  33. Tubelab PP question
  34. Output transformer impedance question
  35. Choke... The side makes difference?
  36. Tubelab...Why "sandy" SE amps?
  37. Fostex Meets Pentode I need some NFB
  38. Oddball Sweep tubes in PP
  39. big doubt: dynakit st35 VS diytube st35clone
  40. Noob - where to start?
  41. Compactron Output Tubes
  42. XPP amp
  43. Tubelab SE ... which 5AR4 ?
  44. Getting only 400 hours on Class A2 PP tube
  45. Pete Millett's 829B amp -> monoblocks
  46. 6JU8A Spec confusion
  47. post on amp design by a newbie
  48. (INDIA) ECC802S/EL84 build, hardware requirements
  49. 6gw8 /ECL86 El Cheapo modifications
  50. Danielak's 300B design
  51. 6080 @ 800A Question ...
  52. Groundplane layout theory
  53. delay on for 83 mercury vapor
  54. Anyone tried "Weber Copper" SS rectifyers?
  55. Scored a bunch of tubes at HamCon
  56. AB2 Anyone else done similiar
  57. 6v6 pp amplifier
  58. Loud 60 cycle Hum from tube amp.
  59. Building a Preamp
  60. another Big One....:)
  61. JJ factory pictures ...
  62. Good enough CFs
  63. What's a good way to clean tubes w/o taking off the labeling?
  64. 6BX7 or 12B4A for small SE amp?
  65. Schematic collection posted by a kind soul...
  66. Dumb question, but...
  67. Zen Quad 22
  68. I'm baffled -- 6AK6 push-pull amp
  69. pin count question
  70. 1G3 Max Dissapation?
  71. Edcor Transformers
  72. 12EL6 preamp
  73. Request for EICO HF-20 experiences and ideas
  74. So would this work?
  75. Small-signal (or small power) pentode that can handle 400V (or more)?
  76. Are 6GM8's rare?
  77. How to lower mains voltage using resistors
  78. Music angel XD-SE EL34
  79. Potential project for some inherited transformers
  80. Car Tube Amp?
  81. Marantz 7 Preamp
  82. Euridice pramp but with 45
  83. Tubelab SE Parafeed Monoblocks (5 channel)
  84. Can 6AK6's take high voltages?
  85. Tube equal to one section of a 12AX7?
  86. HK 'Deuce front end on G2 drive output stage?
  87. Direct-coupled cathode/source follower driver in PP?
  88. CCS power supply loading..
  89. Photo Gallery -- Simple SE build
  90. Buying vintage good tubes
  91. current tube manufacturers and or brands
  92. PSU with TL783-question
  93. Hashimoto H-20-7U for 6v6 in triode SE..?
  94. Speakers impedance
  95. mesh plate el34 (supereTNT)
  96. Tagboard amps
  97. Built the DDDAC MKII USB audio card, modified it to feed SRPP tube amp line stage
  98. 6CL6 vs. 12BY7A
  99. Suggestions for a good tube line amp
  100. 12el6
  101. High Squareness Ratio of a Transformer
  102. What causes a tube to crack?
  103. Ming Da MC-7R transformers for Quad 22 clone.
  104. SimpleSE and Switches
  105. Bias and distortion 6EM7
  106. Need ideas - 6L6GA & 6X5GT
  107. tube microphone preamp design ideas
  108. Firestone Air Chief
  109. Zenith Console find, amp suggestions?
  110. 5842 russian equiv 6S45P or 6C45PI ?
  111. bizarre or good topology idea?
  112. 12 EL6 car preamp
  113. Waxy substance leaking from vintage OPT
  114. Output transformer protection fuses
  115. 5670 SRPP DC coupled to 6S4A
  116. L as last filter element?
  117. Strong cigarette smell in a tube amp
  118. Gas coupling?
  119. Differences between nos Tesla E88CC?
  120. Harmonic parrot food?
  121. Modified 6V6 amp, 350 volt @ 250 K HZ output
  122. best current production el34
  123. Help for correct grounding a Dared VP-845
  124. two 6AL5s as a bridge rectifier
  125. JFET Switching on my tube amp
  126. Leak / Dynaco DIY
  127. S-5 tube amp kits
  128. I wanna build a CHEAP mono tube amp, need advice....
  129. 12ax7
  130. Testing for tube shorts
  131. KT66 alternatives in Quad II amps?
  132. FOR TUBE: 350V High Voltage Regulator
  133. what guideline to match pre and amp?
  134. New to list and 300B amp kits
  135. Krank 100w head w/ only 14v output
  136. Primary impedance output transformer
  137. isolation transformer
  138. Cloning transformers
  139. EAR509
  140. Tubelab web site down, no more SimpleSE
  141. Schematics of potential interest
  142. super capacitor for dc heater
  143. Need a kit ??
  144. Edcor XSM10K/15K like intestage in tube SE ?
  145. Does anyone know of an LTSpice model for 12B4?
  146. where to order V-Cap ?
  147. Input Volume Pot
  148. Red Army Power-amp
  149. Cloning a HF-60
  150. Michaelson & Austin TVA-1 info
  151. analyze a circuit...quiescence current and R-Load
  152. how to calculate SE Coupling Cap Voltage ?
  153. Tubelab Simple SE Rectifier Problem?
  154. Mullard ECC88
  155. Engineering vs tube rolling
  156. Diode Peak working voltage ?
  157. Help wanted; combining topologies to "new" 807 PPP design ?
  158. Tubelab Simple SE with two Transformers - Centertaps?
  159. Hybrid Amp
  160. transformer information need help
  161. Replacing a cathode resistor with a CCS
  162. DC offset and relays
  163. Sourcing JJ 300B tubes
  164. Decware Vs Rogue Audio
  165. Global Feedback on Mikael's KT88SE
  166. Generating big voltage swings without 'iron'
  167. 6AS7G Grid Voltage ??
  168. Next project 6EM7
  169. Anyone built a tube-based (6BE6 or 6HS8) volume control?
  170. What to replace these caps with?
  171. 5691 plate value ratings
  172. Bussiness trip to Singapore
  173. Paco mike tube amp
  174. Emergency help with Wes' amp
  175. 2A3 without cathode bypass cap???
  176. Best way to burn-in my new SE xfrmers on the bench?
  177. tubelabse pt wiring
  178. Need help with my ST70
  179. 6sn7 direct coupled and transformer coupled
  180. Hickok 605A Test 6DJ8
  181. Grounded Grid Preamp
  182. Beginner WLTM fixer of 300B hum...
  183. Bell 2420 tube amplifier. Bias question. 6v6 push pull
  184. How to figure gain on split-load with positive feedback?
  185. Mikaels KT88SE & VTV Octal Linestage
  186. idiot needs help making sense of funny squigles - Filmosound
  187. Custom Transformer?
  188. How are this schematic ?
  189. Need help with a Tube preamp Kit (6Z4, 6N3)
  190. data sheets for 7239 and 8068
  191. John Swenson's New BDT preamp
  192. no coupling caps
  193. 6SN7GT brand
  194. tube voltage regulator error amp
  195. driving 845's
  196. Just ordered a Korg EMX-1
  197. Maida for Screen Supply
  198. cracked el34 -> replacement squeals
  199. SimpleSE goes Push Pull
  200. Possibly defective Mullard 12AT7?
  201. Basic measurement question re: shorts
  202. EL84 DC 10Y Project
  203. TubeCad Journal FET CCS
  204. russian tube
  205. Source for #81 light bulb for Hickok Fuse
  206. pchw 's tube hybrid amp accurian info
  207. 3c24 se amp
  208. schematic of firstsoundaudio pre amp
  209. 300b-98c mesh bias
  210. 6SN7 coin base tubes
  211. tube rectifiers and electrolytic reforming w/ variac
  212. I'm running my leak stereo 20 single ended. WHAT???
  213. Varnish on old transformer
  214. SE parallel output questions
  215. Darius Loftin White explained
  216. best capacitor
  217. New Sensor's "Mullard" EL34 reissue?
  218. Best Way to Control Plate Voltage?
  219. Any Mods for a Noisy Leak Point one Stereo?
  220. tubes for 87db spendor
  221. 4v for rectifier tube
  222. Need help rebuilding old PA amplifier!
  223. inverted?
  224. Old Tube Radio - Restoration Project
  225. quick - need parts retailers Wash DC area
  226. H&K Tubeman Circuit Questions (added schematics!)
  227. Marshalls: Why did 600V B+ become 470V?
  228. Raising filament winding above cathode with a EZ81 in the circuit OK?
  229. Problem with Beard Audio
  230. 100K pot in a preamp?
  231. Motor Run Capacitor
  232. Power transformer for 6883B tube uses?
  233. EAGLE PCB help with socket on it
  234. Rca Mi-38188
  235. C- Battery Supply
  236. Seperating Preamp from Amp in Integrated Amps
  237. Please help me in getting rid of the buzz.
  238. Tube Phono stage dilema
  239. Grounding with single tap secondary...
  240. VTL - Manley stereo 75
  241. What about KT100 in SE ?
  242. Tube amplifier kit needed to drive low efficiency speaker
  243. feeling very pleased with myself
  244. Quicksilver Retube
  245. My Totem Arro 4 ohm load on KT-88 based amp
  246. using flash camera (and maybe laptop screen or fluorescent) inverters to power tubes
  247. for fans of the EL38 - the E3375
  248. 811a Opt
  249. Pure class-A or class AB?
  250. 12B4 PP Full Differential Amp Notion

Content Relevant URLs by vBSEO 3.3.2