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 99 100 101 102 103 104 105 106

  1. RCA red base 5691 / 5692
  2. Updating my amps....and "hello" :-)
  3. my first attempt
  4. Finished my first PP amp, 6SJ7-6SN7-6v6
  5. Triode PP OP stage combining Blumlein Garter and CCS bias - anyone tried this?
  6. 6U8 Revisited
  7. DePalma redux
  8. Could this be a perfectly linear triode?
  9. Grounding elevated ccs series filament supply
  10. What to do with E182CC's
  11. Angela EL34 opinions please
  12. Chinise 6N1 tube replacement
  13. Ridiculous Hallucinations
  14. Transformer Ratings
  15. dB Meter with tube circuit
  16. Suggestions for pp or se monos
  17. Low filament current tubes
  18. Tube Clearout
  19. First tube amp, it needs maintenance
  20. Need EF86 phono preamplifier shematic
  21. cannot locate documentation on SCA 9190 receiver
  22. Ecc88 pin 9 connection??
  23. VTL Compact100 Monoblock Blows Fuse
  24. 300b driver revisited.
  25. SYclotron schematic
  26. Hum problem
  27. Suppo el34
  28. my new tube experience
  29. LL1682PP Lundahl
  30. BP Ultrapath
  31. Tube shops/sellers in Kiev , Ukraine ?
  32. Headphones with tubes...
  33. A Triad xfmr for a voltage doubler PSU
  34. Ra-100
  35. Series Resistors on Outputs of Transformer?
  36. what's up !? new choke=subsonic pumping
  37. How to get the best out of the 6C33C-B?
  38. TO-220 PCB spacing for HV MOSFETs
  39. Using a Dynaco ST-70 audio transformer for a guitar amp
  40. Need input on Buffer stage to use in Preamp..
  41. quad output tube help
  42. "Stacking" power transformer secondaries?
  43. Tubes flare on start up!!
  44. Solid state rectifier for AC30 clone
  45. Grid Stopper Advice - Graphs Included!
  46. Western Electric settings for Hickok 600A?
  47. Wanted! single-ended 807 schematic
  48. sputtering 5u4 on diy Wheatfield amp
  49. Is this output transformer faulty?
  50. Help identify variac
  51. Schematic for TL Audio VP-5051 Voice Processor
  52. what's a good layout for a quad EL84 amp on this box?
  53. Scott 350B Tuner; Bridge Rectifier
  54. intermitent static pops from speakers st70
  55. baxandall type tone control for diff amp
  56. Stage amps using DHTs
  57. Tube+OP My headphono & preamp
  58. NFB Clarification
  59. James output transformers
  60. I just bought a an old valve amp
  61. Bias Curves
  62. Triode in Class B or Beam Pentode in Class AB2
  63. Elna Cerafine Caps
  64. help with calibrating a Tv7d/U military tube tester
  65. Cathode Follower driven Phase Inverters
  66. Help finding a tube tester for Stereo tube amps.
  67. Anything horribly wrong with this (LTP w/ LM317 as CCS)
  68. Zenith OPT question
  69. OT/Speaker impedance mismatch
  70. Goldilocks & the 3 (or more) preamp power supplies
  71. Using SE OT for PP.
  72. Need preamplifier schematic/suggestions
  73. Push-Pull vs Push-Pull-Parallel
  74. Odd/Crazy output transformer design?
  75. what 2A3 desgin recommented for home theater
  76. power supply for 10m45s
  77. How badly matched are your IXYS10M45S ?
  78. Class B Push-Pull
  79. Please comment on my design -and a few resistor values..
  80. How to lower even harmonic, keep odd one
  81. PC Mount 9-Pin Tube Socket Layout
  82. datasheet for type 52, help !!!
  83. Another kt88 Monoblock Builders Thread
  84. Question about stacked pawer supplies
  85. ys audio preamp
  86. Need help on 811A partial feedback
  87. Funny console, need ideas...
  88. SMPS experts come on in please!
  89. DC Filament supply boards
  90. Looking for vintage radio sound
  91. Channel death - Chinese EL34 PP
  92. JFET cascoded with tube gain calculation
  93. Fet 6Gk5 ECC88 mc phono stage
  94. Heathkit ol-1 oscilloscope help. Can't get solid spot during setup procedure.
  95. Operating a stereo amp in bridged mode
  96. Mic input Transformer from Triode Elect
  97. Power transformer for tube amp requirements
  98. Tape playback amp
  99. Eico 666 tube tester restoration - need grid control!
  100. Need Schematic/Manual Lambda 71
  101. Replace ECC83 preamp valve with E88CC(6922)
  102. Advice on 6P3S p-p amp schematic, feedback problem?
  103. 6S41S P-P Amp Initial Query
  104. El Cheapo, builders thread
  105. kbu608 rectifier
  106. Looking for nice sounding amp project
  107. B+ for EL84
  108. Output Transformer kt88 6550 pp, Wires? Jukebox? Help.
  109. OPT with foil secondaries
  110. Small Tube Pre Amp - Power Supply Cable
  111. Identification of unknown output transformer
  112. master volume with a extra tube
  113. 10 pounds of power for $15
  114. Unstable Eico HF-87
  115. DIY Dual Channel Active Tube Tone Control
  116. cant eliminate 50hz hum on just one side of the 6h6p headphoneamp
  117. question about the 866a
  118. Trade Custom Speaker Horns for Custom Amp
  119. TVA-1 valve amp - help
  120. Need to source a PSU chassis - simple steel
  121. What should I do with my Dynaco MKIII's
  122. inrush current
  123. Scott 222B output transformer : Compatibility and specs
  124. C3G/C3M Prices
  125. 5v3, 5u4, 5u4gb, 5u4gbm, 5931?
  126. transformer for quad EL84 SE amp - will Antek 360v work
  127. Best Possible Tube Headphone Amp
  128. Help with cheap mono SE
  129. Millkido 24
  130. 60W mono's design help
  131. Psu question - best place for the caps?
  132. 1.2W guitar amp useing:6N2P and 6N1P russian tubes.
  133. RCA jacks
  134. Hickok 530-B tester charts wanted
  135. comparison of heater termination noise
  136. Some questions about an amplifier design
  137. 2nd harmonic feedback
  138. idea's for a valve preamp
  139. Best line stage tube?
  140. Bias Adjustment point
  141. Looking for a Williamson squematics
  142. Magnavox Console Speaker Impedances
  143. first tube amp
  144. Beam Triodes
  145. Winding output transformers
  146. Anyone Have a Schematic for Wavac MD300B?
  147. PushPull vs ParalelSE
  148. Painting transformer end bells
  149. all-octal schaded pp
  150. New Wood Chassis from Hammond
  151. Strange Noise From Amp
  152. Missing components
  153. Tube headphone amplifier.
  154. Emission - Double Triode
  155. Convergent Audio Technology - where is their Hompage?
  156. Mesh Plate
  157. Cathode follower question
  158. Power supply question
  159. Looking for a 866a powersupply schematic
  160. 211 or 845 project
  161. Modify Dynaco MKIII to use 6AR6s ?
  162. Yet another Dyna ST-70 Input Board
  163. Free Download Vacuum Tube Design Book
  164. driver stage for ppp 6550's
  165. power supply problem
  166. Positive/Negative Feedback
  167. Unholy Alliance Phono Amp
  168. Shrink a tube amp
  169. lampizator srpp help
  170. the secret of best preamplifier
  171. Any issues with adding a grounded power cord to a Heathkit IT-17 tube tester?
  172. HELP to ID push pull/Single Ende
  173. 12BH7,6414,and 12AT7 to drive EL34 better
  174. Testing Tube Amplifiers
  175. trade off higher HT current for lower filament current ?
  176. Any Russian analog of 12BY7 ?
  177. SV572-10 still being made?
  178. PP Output Transformer Testing Puzzle
  179. baby steps
  180. Partial FB: 2 SE + 1 PI = PP?
  181. G-807=807 SE or PP?
  182. 1Hz oscillation with CCS biased output valves
  183. Ultra-linear 6L6 output stage
  184. Transformer or capacitor coupling?
  185. Victor (JVC) Tube Amp MCM-200
  186. MiniWatt N3 problems, oscillation thumping and RF/motor problems.
  187. A2293 pins connection, help !!!
  188. Start-Up Delay for tube amp !
  189. Getting OPT in Japan?
  190. cathode follower tube buffer using 6n6p
  191. Buzz at output until tubes conduct
  192. I need help for amps.
  193. UL Connection results in higher distortion
  194. Header bypass Cap?
  195. DC heater large cap
  196. How to lower preamp output?
  197. Why use a pre amplifier
  198. DHT-buffered NOS-dac
  199. Microphonics 12AY7 v.s. 12AX7
  200. ECC99/2A3 interstage finished, but have one query
  201. Tube lovers in Germany?
  202. preamplifier
  203. Choosing grid leak resistor value -- partly subjective?
  204. What does the acronym "AMW" stand for?
  205. 6C33C distortion spectrum
  206. 6C33C OTL DC schematic needed
  207. help with identifying the cause of preamp problem
  208. Rosenblit 70w Mac amp
  209. Grounding scheme
  210. CC vs Shunt filament supply?
  211. Need opinions on boxing a dual mono line stage
  212. Lets settle the b+ on cold tubes issue!
  213. New 2A3 SET / Simple, but gentle sounding amplifier
  214. Magnavox Console Amp Chassis
  215. transformer identification
  216. 50Wrms audio amplifier
  217. 12B4 have a good sound ???
  218. almarro OPT question
  219. Best EL84pp kit??
  220. Clarion 6L6G Oscillator Amp.
  221. Did you hear an original tube sound?
  222. Designing an OTL / Circlotron
  223. Cayin A55t or AudioSpace AS-8i Mk.III
  224. filament voltage question
  225. 7236 vs 6AS7 ?
  226. Bias Circuit Calculation
  227. 6V6 Hum Issues
  228. Crossover co-axial
  229. Wurlitzer 6420 to audio amplifiers
  230. Advice on Parafeed Output Transformer
  231. mingda mc34ab mods?
  232. small and cheap OTL schematic needed
  233. ecl82 or ecl86 amplifier decision
  234. Well Here Goes... K16LS in Dynaco Chassis?
  235. Not too often you see one of those
  236. Sweet Peach vs Meng Yue EL84
  237. Attempt at giving back: 6L6GC SE amplifier
  238. Best Complete KT88 Amp Kit under $1K?
  239. Webcor Musicale OT puzzle
  240. Audio Research SP3a
  241. Preamp Conordīs with some malfunctioning
  242. Oscillating PSU above certain voltage
  243. B+ voltage load line question
  244. ming da tube amp smell
  245. Rebuilding my amp, would like some input.
  246. do any of these cv4024s seem genuine to you?
  247. Stupid question: EL34 tubes.
  248. PP with Unbalanced concertina = 2nd H?
  249. harmonic distortion
  250. Enhanced Tube's performance

Content Relevant URLs by vBSEO 3.3.2