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

  1. Tube X-ref list ??
  2. AVO tube tester spares
  3. Add gain before or after the phase splitter?
  4. ping SY: Red Light LED question
  5. Greinacher voltage multiplier
  6. Dead channel
  7. Euphonia is back!
  8. What's the best 417A & 437A?
  9. Eico ST70 OPT / Schematic Question
  10. Is this feasible?
  11. Repairing 805 tubes
  12. jadis defy 7 help
  13. 6n1p Screen
  14. Mc275ce
  15. Are these tubes are the same?
  16. "King of tube(s) for line-stages"
  17. Acoustic Plan PhonoMaster
  18. Heathkit AA-81 schematic
  19. has anyone kept a copy of gpimm's latest self-biasing CCS?
  20. How to wire inductor - s and n
  21. Rogers Cadet III schematics Corrections
  22. Hickok TV-7/U restoration advice needed.
  23. Rogers Cadet III to SY's Red Light District or Gingertubes's Baby Huey
  24. 24v Aikido for newb.
  25. Powering Up Old Tube Amps/Receivers
  26. preliminary schematic drawing rev.1a
  27. Not a typical MKIII Dynaco.
  28. mosfet buffer for power stage
  29. 304TL based Class A
  30. EI KT-90 news
  31. Purchasing NOS Tubes
  32. tube power supply design resources
  33. High Voltage Regulator Design
  34. max. output for two 5881 tubes?
  35. Excessive current draw in Fender Deville
  36. driving your power stage
  37. Need schematic Cary Audio SLP-70 preamp
  38. Bridge-balanced amplifiers
  39. Tell-tale signs of good feedback usage?
  40. Any mid priced SE transformers around?
  41. Bias resistor
  42. Some sneek peeks
  43. Old radio with 4 pin sockets, info?
  44. need help on pot tapers
  45. A typical KT88 tubes
  46. amplifier for unknown output transformers?
  47. vista audio
  48. CV4014 and 5650 - any audio application of these tubes?
  49. SVP-PRO schematic
  50. Looking for a good source for attenuators
  51. Center-tap to ground?
  52. 6n1p-ev operating points
  53. where to find old pot's with switch built in
  54. Maggie refurb project
  55. Parafeed output
  56. Hirtel junior stereo italian tube amp
  57. power supply help
  58. 7189/7189A Problem
  59. Glow modulation tubes
  60. Transformer Hum leaks to Speakers
  61. EAR Yoshino V20 Amplifier
  62. Repair a tube tester?
  63. starting PP - 6p3s
  64. 6BL7 rA in PP
  65. Why such high plate voltage in 2A3 DRD?
  66. to parafeed or not to parafeed that is the question
  67. Lowering voltage output of transformer
  68. Using EL34 in a line stage
  69. peerless transfomer information
  70. Output transformer design for SS amp
  71. CD source fortube amp
  72. What's the SIMPLEST 50W or higher Amp Schematic but best sound you've heard ?
  73. BIG tube amplifier, two qbl5/3500 tubes
  74. EL34 or 6L6 mono help me please!!
  75. Why don't we use output tubes as cathode followers?
  76. 6C33 driver recommendations
  77. 100watt power, fixed gain far cleaner than Marshall amp any sugestion
  78. Minimum Zener Current with Pass Device
  79. Favorite easy 6V6 push-pull circuit?
  80. Tubecad soft-clipping circuit
  81. broskie voltage regulator
  82. E88CC dissipation in Aikido
  83. Magnavox 6BQ5/EL84 and Mr. Gabe
  84. Aikido hum has me stumped !!!!
  85. 5842 and 5842 WA for 300B
  86. Basic tube combination question.
  87. Resistive ps voltage follower
  88. First time DIY tube
  89. Need help with hum and faint left channel on my S5 Electronics kit
  90. grid impedence of paralleled tubes in push pull
  91. Fender Bassman PT Rewind
  92. rectification
  93. 6AU6 Varieties
  94. EMI tubes (British made)
  95. valve wear symptoms?
  96. Standby switch, snap, crackle, pop?
  97. Aikido PSU questions (Bas Boards)
  98. one tube amps
  99. Intermittant Clicking
  100. How to solve noise/storing/on car Tube Amp ? any Schematic ?
  101. Series MOSFET regulator better with just voltage ref on gate or with error amp?
  102. Tube spice models
  103. Audible Illusions Modulus faulty?
  104. Ei Tubes..
  105. more output transformer questions
  106. 6C33 design comments?
  107. Current production EL34
  108. Impedance matching
  109. question about multiple input transformer in same tube mic pre.
  110. One tube preamp
  111. Help 6G-E12A pinout??
  112. DIY Jadis JA 30 power amp PCB
  113. output tube options
  114. wanted: accurate 257 tube tester manual
  115. Developing a "universal" tube power supply PCB
  116. Looking for a Cover....
  117. EL34 Sound
  118. Pinout ECC83 to ECC808
  119. How to convert S5 K-12g kit to dual mono?
  120. EL84 + EF86
  121. Tube amps, power and speaker impedance
  122. How to figure output Z of SRPP?
  123. Rose RV23 preamp
  124. Wanted RIAA stage with 6SN7
  125. Help with PSU Design
  126. Tetrode output stage
  127. New amplifier project -my layout
  128. jadis ja 30
  129. Aikido Attenuator kit question
  130. Fender Delux Reverb AB763
  131. Weird crackling sound without B+ applied
  132. More Aikido questions...........
  133. 6C41C in OTL?
  134. Looking for Voss-Ellis article
  135. 807 E-Linear
  136. ECC86 model
  137. Tube ID & Code Help Needed
  138. PS Decoupling question
  139. Need help in trouble-shooting my AES Sixpacs amp
  140. Space between power tubes
  141. Schematic please? SRPP with current source cathode follower
  142. Series connecting output Transformers.
  143. 6C45-Pi battery RIAA/Pre sugestions?
  144. Good News For EI Tube Fans
  145. My 300B project...
  146. building Single Ended amps
  147. Higher power amps using 807's or 1625's
  148. Project using Eico ST 70 Iron?
  149. M-1 amplifier kit - full documentation in public domain now
  150. Sus tubes ?
  151. Adjusting BIAS
  152. "Shrine" SE Amp using 6AH6 and 1625
  153. MFA Lumi - possible to "un-darken" the sound signature?
  154. Output transformers resistance
  155. Aikido heaters
  156. Return to Aikido Hum issues
  157. Looking for Schematic 6550 tube amp triode mode more than 35Watt ?
  158. Compare the sound of 6550 amp to a 6L6 amp
  159. Biasing a valve amp
  160. Scoundrel days
  161. Counterpoint SA100 one channel doesn´t work
  162. Hepl me circuit 6h30
  163. 6LR8 Amp Preliminary Questions
  164. Another 6L6 schematic
  165. 6S19P Amplifier
  166. An idea for a PL84 amp with toroidal interstage.
  167. 417A-300B Plate Choke or Interstage Coupled?
  168. Identifying an unknown tube
  169. Looking for EL34 PP Schematic Amp ? at least 35Watt
  170. ADVICE on Valvestate crunch, but all tube instead.
  171. Help diagnosing noise
  172. st70 blowout
  173. Gu81-m
  174. 6c4 pre-amp circuit
  175. 6SN7 6.3 V heater supply
  176. 2C26 &E1148's
  177. First ECL82 amp probs.
  178. JE Labs ST2A3DX
  179. Punchy 813 Poweramp
  180. Hum in AE K502 or K12m
  181. SE 6SN7 amp....
  182. Audio Innovations 800C schematic or even better service manual?
  183. Music angel amps
  184. Low gain 9-pin tubes for Aikido?
  185. JADIS ORCHESTRA IN PCB (original is hardwire)
  186. Blown Valve in ARC VT50 - help
  187. LAMM ML3 *Signature*
  188. Diode for DC heater
  189. Calculating shunt reg source impedance
  190. Marant 7c preamp diyzone project
  191. PSU Caps for an EL34 SET
  192. high gain 12ax7 preamp from scratch?
  193. IXYS 10M45 chip CCS
  194. Octal Aikido? What tubes?
  195. Tube power supply questions
  196. 6J5 input swing
  197. Checking spice model plate curve accuracy
  198. How many Ohm for triode strapping?
  199. Power supply for Heathkit WA-P2 pre-amplifier
  200. Bogen MX-60a tune-up
  201. dynaco st35 clone problem
  202. Edcor OPT's
  203. ECC40 cascode
  204. Air Vane RIAA Tuning Question
  205. Tube Noob! need help with tubes lots of tubes
  206. bias adjust installation, bogen mo-100a mo 100a quicksilver
  207. 6EM7 Amp
  208. 40mu tube preamp suggestions?
  209. Safe installation of interstage
  210. I've built some amps, need suggestions for a DIY preamp or line stage
  211. CRD diode CCS any good <1mA?
  212. Help fixing a Border Patrol Power Amp
  213. TAD-60 schematics / mods
  214. Selling tube amps
  215. Drd 300b Pse
  216. Hammond Transformer Winding Resistance -- 369GX
  217. The meaning of VA in a TX
  218. Ucl85
  219. Best way to measure cathode follower current
  220. Neuman U47
  221. OT: Season's greetings to all
  222. Anyone have experience with a 6AN4...?
  223. L-pad instead of H-pad??
  224. valve regulated psu
  225. looking for metal enclosure for custom preamps
  226. basie+aikido preamp
  227. Input Switch?
  228. Help me please
  229. Congratulations, you just built a $2K antenna !
  230. Sonic Frontiers Line 2, please help?
  231. Sovtec 12AX7
  232. removing AC Hum on Aikido????
  233. Stereo Build - Mikaels KT88
  234. 6V6GT scematic, any good, comments?
  235. 807 vs 811A output: Sonic preference?
  236. Cheap PP OPTs
  237. Mc C-22 Ce
  238. Transformer Coupled Linestage
  239. 6CY7 Variants
  240. EZ81 rectifier noise
  241. Any good Output Transformers from China?
  242. Solid Core or Multistrand?
  243. Aikido - alive and kicking butt (not mine!)
  244. Dead Copland CTA-501
  245. Is the E86L the industrial sister of the EL86?
  246. Hammond 1630SEA, worth trying?
  247. Using Gas Regulators
  248. Cheap and Chinese KT88 SE amp
  249. Cary v12 -> V12r Conversion Questions
  250. 15 watts loud enough?

Content Relevant URLs by vBSEO 3.3.2