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

  1. Finished my first PP amp, 6SJ7-6SN7-6v6
  2. Triode PP OP stage combining Blumlein Garter and CCS bias - anyone tried this?
  3. 6U8 Revisited
  4. DePalma redux
  5. Could this be a perfectly linear triode?
  6. Grounding elevated ccs series filament supply
  7. What to do with E182CC's
  8. Angela EL34 opinions please
  9. Chinise 6N1 tube replacement
  10. Ridiculous Hallucinations
  11. Transformer Ratings
  12. dB Meter with tube circuit
  13. Suggestions for pp or se monos
  14. Low filament current tubes
  15. Tube Clearout
  16. First tube amp, it needs maintenance
  17. Need EF86 phono preamplifier shematic
  18. cannot locate documentation on SCA 9190 receiver
  19. Ecc88 pin 9 connection??
  20. VTL Compact100 Monoblock Blows Fuse
  21. 300b driver revisited.
  22. SYclotron schematic
  23. Hum problem
  24. Suppo el34
  25. my new tube experience
  26. LL1682PP Lundahl
  27. BP Ultrapath
  28. Tube shops/sellers in Kiev , Ukraine ?
  29. Headphones with tubes...
  30. A Triad xfmr for a voltage doubler PSU
  31. Ra-100
  32. Series Resistors on Outputs of Transformer?
  33. what's up !? new choke=subsonic pumping
  34. How to get the best out of the 6C33C-B?
  35. TO-220 PCB spacing for HV MOSFETs
  36. Deluxe Reverb Clone too "throaty"
  37. Using a Dynaco ST-70 audio transformer for a guitar amp
  38. Need input on Buffer stage to use in Preamp..
  39. quad output tube help
  40. "Stacking" power transformer secondaries?
  41. Tubes flare on start up!!
  42. Solid state rectifier for AC30 clone
  43. Grid Stopper Advice - Graphs Included!
  44. Western Electric settings for Hickok 600A?
  45. Wanted! single-ended 807 schematic
  46. sputtering 5u4 on diy Wheatfield amp
  47. Is this output transformer faulty?
  48. Help identify variac
  49. Schematic for TL Audio VP-5051 Voice Processor
  50. what's a good layout for a quad EL84 amp on this box?
  51. Scott 350B Tuner; Bridge Rectifier
  52. intermitent static pops from speakers st70
  53. baxandall type tone control for diff amp
  54. Stage amps using DHTs
  55. Tube+OP My headphono & preamp
  56. NFB Clarification
  57. James output transformers
  58. I just bought a an old valve amp
  59. Bias Curves
  60. Triode in Class B or Beam Pentode in Class AB2
  61. Elna Cerafine Caps
  62. help with calibrating a Tv7d/U military tube tester
  63. Cathode Follower driven Phase Inverters
  64. Help finding a tube tester for Stereo tube amps.
  65. Anything horribly wrong with this (LTP w/ LM317 as CCS)
  66. Zenith OPT question
  67. OT/Speaker impedance mismatch
  68. Goldilocks & the 3 (or more) preamp power supplies
  69. Using SE OT for PP.
  70. Need preamplifier schematic/suggestions
  71. Push-Pull vs Push-Pull-Parallel
  72. Odd/Crazy output transformer design?
  73. what 2A3 desgin recommented for home theater
  74. power supply for 10m45s
  75. How badly matched are your IXYS10M45S ?
  76. Class B Push-Pull
  77. Please comment on my design -and a few resistor values..
  78. How to lower even harmonic, keep odd one
  79. PC Mount 9-Pin Tube Socket Layout
  80. datasheet for type 52, help !!!
  81. Another kt88 Monoblock Builders Thread
  82. Question about stacked pawer supplies
  83. ys audio preamp
  84. Need help on 811A partial feedback
  85. Funny console, need ideas...
  86. SMPS experts come on in please!
  87. DC Filament supply boards
  88. Looking for vintage radio sound
  89. Channel death - Chinese EL34 PP
  90. JFET cascoded with tube gain calculation
  91. Fet 6Gk5 ECC88 mc phono stage
  92. Heathkit ol-1 oscilloscope help. Can't get solid spot during setup procedure.
  93. Operating a stereo amp in bridged mode
  94. Mic input Transformer from Triode Elect
  95. Power transformer for tube amp requirements
  96. Tape playback amp
  97. Tube for high input Z
  98. Eico 666 tube tester restoration - need grid control!
  99. Need Schematic/Manual Lambda 71
  100. Replace ECC83 preamp valve with E88CC(6922)
  101. Advice on 6P3S p-p amp schematic, feedback problem?
  102. 6S41S P-P Amp Initial Query
  103. El Cheapo, builders thread
  104. kbu608 rectifier
  105. Looking for nice sounding amp project
  106. B+ for EL84
  107. Output Transformer kt88 6550 pp, Wires? Jukebox? Help.
  108. OPT with foil secondaries
  109. Small Tube Pre Amp - Power Supply Cable
  110. Identification of unknown output transformer
  111. master volume with a extra tube
  112. 10 pounds of power for $15
  113. Unstable Eico HF-87
  114. DIY Dual Channel Active Tube Tone Control
  115. cant eliminate 50hz hum on just one side of the 6h6p headphoneamp
  116. question about the 866a
  117. Trade Custom Speaker Horns for Custom Amp
  118. TVA-1 valve amp - help
  119. Need to source a PSU chassis - simple steel
  120. What should I do with my Dynaco MKIII's
  121. inrush current
  122. Scott 222B output transformer : Compatibility and specs
  123. C3G/C3M Prices
  124. 5v3, 5u4, 5u4gb, 5u4gbm, 5931?
  125. transformer for quad EL84 SE amp - will Antek 360v work
  126. Best Possible Tube Headphone Amp
  127. Help with cheap mono SE
  128. Millkido 24
  129. 60W mono's design help
  130. Psu question - best place for the caps?
  131. 1.2W guitar amp useing:6N2P and 6N1P russian tubes.
  132. RCA jacks
  133. Hickok 530-B tester charts wanted
  134. comparison of heater termination noise
  135. Some questions about an amplifier design
  136. 2nd harmonic feedback
  137. idea's for a valve preamp
  138. Best line stage tube?
  139. Bias Adjustment point
  140. Looking for a Williamson squematics
  141. Magnavox Console Speaker Impedances
  142. first tube amp
  143. Beam Triodes
  144. Winding output transformers
  145. Anyone Have a Schematic for Wavac MD300B?
  146. PushPull vs ParalelSE
  147. Painting transformer end bells
  148. all-octal schaded pp
  149. New Wood Chassis from Hammond
  150. Strange Noise From Amp
  151. Missing components
  152. Tube headphone amplifier.
  153. Emission - Double Triode
  154. Convergent Audio Technology - where is their Hompage?
  155. Mesh Plate
  156. Cathode follower question
  157. Power supply question
  158. Looking for a 866a powersupply schematic
  159. 211 or 845 project
  160. Modify Dynaco MKIII to use 6AR6s ?
  161. Yet another Dyna ST-70 Input Board
  162. Free Download Vacuum Tube Design Book
  163. driver stage for ppp 6550's
  164. power supply problem
  165. Positive/Negative Feedback
  166. Unholy Alliance Phono Amp
  167. Shrink a tube amp
  168. lampizator srpp help
  169. the secret of best preamplifier
  170. Any issues with adding a grounded power cord to a Heathkit IT-17 tube tester?
  171. HELP to ID push pull/Single Ende
  172. 12BH7,6414,and 12AT7 to drive EL34 better
  173. Testing Tube Amplifiers
  174. trade off higher HT current for lower filament current ?
  175. Any Russian analog of 12BY7 ?
  176. SV572-10 still being made?
  177. PP Output Transformer Testing Puzzle
  178. baby steps
  179. Partial FB: 2 SE + 1 PI = PP?
  180. G-807=807 SE or PP?
  181. 1Hz oscillation with CCS biased output valves
  182. Ultra-linear 6L6 output stage
  183. Transformer or capacitor coupling?
  184. Victor (JVC) Tube Amp MCM-200
  185. MiniWatt N3 problems, oscillation thumping and RF/motor problems.
  186. A2293 pins connection, help !!!
  187. Start-Up Delay for tube amp !
  188. Getting OPT in Japan?
  189. cathode follower tube buffer using 6n6p
  190. Buzz at output until tubes conduct
  191. I need help for amps.
  192. UL Connection results in higher distortion
  193. Header bypass Cap?
  194. DC heater large cap
  195. How to lower preamp output?
  196. Why use a pre amplifier
  197. DHT-buffered NOS-dac
  198. Microphonics 12AY7 v.s. 12AX7
  199. ECC99/2A3 interstage finished, but have one query
  200. Tube lovers in Germany?
  201. preamplifier
  202. Choosing grid leak resistor value -- partly subjective?
  203. What does the acronym "AMW" stand for?
  204. 6C33C distortion spectrum
  205. 6C33C OTL DC schematic needed
  206. help with identifying the cause of preamp problem
  207. Rosenblit 70w Mac amp
  208. Grounding scheme
  209. CC vs Shunt filament supply?
  210. Need opinions on boxing a dual mono line stage
  211. Lets settle the b+ on cold tubes issue!
  212. New 2A3 SET / Simple, but gentle sounding amplifier
  213. Magnavox Console Amp Chassis
  214. transformer identification
  215. 50Wrms audio amplifier
  216. 12B4 have a good sound ???
  217. almarro OPT question
  218. Best EL84pp kit??
  219. Clarion 6L6G Oscillator Amp.
  220. Did you hear an original tube sound?
  221. Designing an OTL / Circlotron
  222. Cayin A55t or AudioSpace AS-8i Mk.III
  223. filament voltage question
  224. 7236 vs 6AS7 ?
  225. Bias Circuit Calculation
  226. 6V6 Hum Issues
  227. Crossover co-axial
  228. Wurlitzer 6420 to audio amplifiers
  229. Advice on Parafeed Output Transformer
  230. mingda mc34ab mods?
  231. small and cheap OTL schematic needed
  232. ecl82 or ecl86 amplifier decision
  233. Well Here Goes... K16LS in Dynaco Chassis?
  234. Not too often you see one of those
  235. Sweet Peach vs Meng Yue EL84
  236. Attempt at giving back: 6L6GC SE amplifier
  237. Best Complete KT88 Amp Kit under $1K?
  238. Webcor Musicale OT puzzle
  239. Audio Research SP3a
  240. Preamp Conordīs with some malfunctioning
  241. Oscillating PSU above certain voltage
  242. B+ voltage load line question
  243. ming da tube amp smell
  244. Rebuilding my amp, would like some input.
  245. do any of these cv4024s seem genuine to you?
  246. Stupid question: EL34 tubes.
  247. PP with Unbalanced concertina = 2nd H?
  248. harmonic distortion
  249. Enhanced Tube's performance
  250. New GU50 SE: SRRP or Cascode for driver?

Content Relevant URLs by vBSEO 3.3.2