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

  1. Tube Power Amp Kit Recommendations
  2. EL34,KT66,6L6GC,KT77:who works better with high impedance OT load in SE Triode Mode?
  3. ECC40 Voltage Question
  4. Question re DC coupling vs RC coupling (AC)
  5. Can you tell the difference?
  6. Measuring ripple in filament supply (coleman reg)
  7. What about use largest possible capacitor as interstage decoupling ( 1 or 2uf)
  8. replace 6N3 tube preamp with mullard E555L
  9. Preamp to Poweramp tube proximity/spacing?
  10. List of Tube Noise Measurements - please nominate lowest noise tubes
  11. Just for interest
  12. Time to build the big one.
  13. Opinion? Would the input/driver from a HK-5 be good to replace original Mk3 ft. end??
  14. Has anyone built this kit?
  15. 22 AWG PTFE Wire jacket
  16. mu-follower with output transformer?
  17. ECC81 double triode tubes flashed brightly when switched on.
  18. pre amp with tone controll
  19. Making own hifi tube amp from scratch!!
  20. Pentode CCS as a load for long tailed pair?
  21. E88CC & 6N23P plate voltage range?
  22. First pre phono design [newbie]
  23. Struggling with LTspice - How to use .inc to get a tube to appear
  24. Eico St 40
  25. ECC88 Input/driverstage for F4 amp
  26. Tube headphone amp
  27. Rike Audio S-cap
  28. Acquired free brand new Jolida 302a
  29. Triode vs Transistor
  30. Help with restoration of Audio Research equipment
  31. Grommes 103gt tuner
  32. Frank’s 6SN7 pre & regulated supply
  33. Sleeping giant
  34. hum by mounting powertransformer and tubes on same chassis
  35. Rectifier tube overheating
  36. "World's Best Technical Master Craftsmen"
  37. OPT for 2A3
  38. getting rid of pre amp in a tube amp
  39. A question on OPT and no loads.
  40. Auto-Bias vs Manual bias vs EFB
  41. Russian receiving tubes and foreign equivalents
  42. B+ delay timer module
  43. Testing DIY triodes
  44. Adding a dummy load to prevent amp from being damaged by having no load?
  45. 30 watt class A chopper controlled bias with 6 EL84
  46. THD
  47. Input resistor (What are purposes?)
  48. Posted new 300B push-pull amp design
  49. Help me source a pair of OPT for Knight KG-240 tube amp
  50. Help Pick Transformers for EICO HF-87
  51. PreAmp
  52. Original price of the Conrad Johnson PV-5
  53. balance pots in Williamson driver stage
  54. Another Question on Tektronix Transformers
  55. Philco K1629 Upgrade Options
  56. My return to tubes, via headphones - what circuit would you recommend?
  57. High Quality EL84 UL SE Amplifier
  58. regulated supply to CCS plate load
  59. Twin Audio Sinfonia Preamp
  60. ecll800 schematic confusion
  61. 6L6 recommendations
  62. tube 100th
  63. Luxman OY15-5k OPT?
  64. Has anyone had experience with Russian 5C8S and 5C9S?
  65. New Here looking for info on rare SVIKO russian made 6KG6 monoblocks
  66. DC-DC converters
  67. EL 84 pp amp - simple regulated circuit sought
  68. Any tube amp to drive B&W 802D?
  69. New to valve amplifiers
  70. SE 6GW8 output transformer with 5 wires.
  71. Mr.Curwen's single ended adventures
  72. Tube magic eye with em84-sensitivity?!
  73. Tube test
  74. Brimar 6V6 USSR
  75. Construction Guides
  76. World Design KT88 Kit
  77. Opinions appreciated: Lafayette LA 224b vs. McIntosh 225
  78. Clone X10D problems distortion / saturation ... help!
  79. 12DW7 or 12AU7+12AX7 if stereo?
  80. First preamp and gain control
  81. Tube life..
  82. Berman 76 preamplifier, I need some advice please
  83. How to light GM70 tube as decorative?
  84. Old Tube amp missing tubes. HELP
  85. Going to Berlin, looking for electronics diy shops
  86. 6SJ7 Vs 6Ж8 - Can the russian tube be considered an equivalent tube ?
  87. 6L6G Tung-Sol reissue: sweet sound and delicious night sight, but...
  88. Help with Eico ST70
  89. Class-D and Tube buffer/preamp off same 12V SLA?
  90. Hard time to find High Voltage medium power linear BJT
  91. Gu50 or 1624 PP amp first trials
  92. cathode follower driver A2
  93. High Pass Filter for OTL headphone Amp
  94. Bewitch 6550 Balance Issue
  95. ground hum issues in an old peak st-100
  96. Need an APPJ PA0901A Mini Amp Output Transformer.
  97. VTL Tiny Triode Schematics?
  98. A question of dynamics: Amplifier design?
  99. Rechargeable battery for cathode bias: open discussion
  100. High quality tube socket for 4P1L tube ?
  101. VTL Schematic needed
  102. Diode rating for filament voltage doubler
  103. SE vs PP for SET amps
  104. Use "mu output" from depletion mode MOSFET load?
  105. GM70 SE mov rectifiers
  106. First Preamp build
  107. Fisher KX-200 driving a pair of ESL from the plates
  108. Disadvantages of unbalanced tube
  109. The anatomy of a vacuum toob
  110. Valve Amplification Company CLA1 mkii help
  111. leak stereo 20 channel imbalance
  112. Mains powered 20W submin bridge amp
  113. SS rectification ST70
  114. K-12g ultra fast diode mod UF4007
  115. WE46c..
  116. 10 Pin B10A socket
  117. RIAA network adjustment
  118. audio research sp16
  119. Visiting Japan
  120. "up-rating" power filter chokes
  121. Differential pair gain/ where to apply feedback
  122. EL84 ECC83 SE Amp schematic
  123. high B+ voltage drop
  124. Volume control chip
  125. Faylon P200 rebuild
  126. Signal Ground
  127. New to 6DJ8 tube
  128. EL91 Max ratings ? help
  129. I need a distraction!
  130. 300B amp project
  131. "bevois valley" in triode
  132. Strange problem wit a 3 tube preamplifier
  133. JJ Tesla vs. Electro Harmonix for Hi-Fi EL84 SE?
  134. This Tube CB make
  135. tubecad el84 powersupply ps4 question
  136. ART Tube MP studio V3 problems
  137. Calculating Cathode Bias w/o tube curves?
  138. Cathode follower PA Driver in a cathode biased amp
  139. I have my first Valve Amp, help me not blow it up!
  140. Unison Research SR-1 schematic/service manual
  141. Mega Tube DIY project
  142. very very simple single ended 300b valve amp schematic?
  143. 300b with single stage driver, c3m or?
  144. Cap upgrade for SVP RIAA stage
  145. Quick Q about JC's upside down front end.
  146. Bogen beasts again
  147. I thought this was a joke...but..
  148. Black pollution
  149. Difference between 6N1P and 6N23P?
  150. low voltage AC umbilical advice
  151. RCA MI-4288J Amplifier - Any info?
  152. 3.5k OPT for 45 type tube?
  153. DIY/OOTB upgrade? PP/SE?
  154. Sansui AU70
  155. Moody 496 Schematic Wanted
  156. Center-tapped Plate Choke vs. OPT for PP plate loads
  157. Help sourcing some resistors with very special values for a project
  158. Power Transformer Rating?
  159. KT120 x 4 / 240W Push Pull TUBE AMP MONOBLOCKS
  160. How Much Wiring??
  161. Schematic request for Meixing Mingda MC-211
  162. 300B SE with an interstage
  163. 211/845 tubes in a 805 based amp ?
  164. Grid leak bias, how does it work?
  165. Melos Sha Gold Reference
  166. Tube Amp for MTM
  167. Dynaco ST-70 Series III
  168. #27 + 6N8S Mu-Follower: Vhk Max Question
  169. Tube Mic preamp with compressor - any ideas?
  170. Counterpoint Sa-5000 and Klimo Kent - needed service manuals
  171. Drawing loadline using interstage / choosing interstage
  172. My New Iron for Single Ended 2a3
  173. GU-50 push pull amplifier
  174. 12SL7GT vs 12SN7GT
  175. DIY power amp and speakers
  176. KT88 SE
  177. Building a 6bq5 set amp
  178. OPT DC question
  179. Suitable speakers for a Leak Stereo 20
  180. Need advice on tube record player power jack.
  181. 12a_7 or 6SN7 phono preamp suggestions
  182. ECC99 as input stage for 300B?
  183. Drawbacks to over-speccing filament trannies?
  184. Thoughts on Western Electric amp redesign
  185. Adding choke to a power supply
  186. Broskie unbalancer and Aikido Help
  187. Mounting output tran and filter choke together
  188. Capacitors for tube amp rebuild
  189. Diving in, few questions
  190. SET Current Drop- Lack of Power, Saturation or Headroom?
  191. Power tubes: which is the maximum wire lenght for the cathode resistor to ground?
  192. Center Tapped Mains Transformer as Parafeed Plate Choke
  193. A tube newbie's review of the VTA ST-120
  194. Help Identifying Ebay Finds
  195. Led biasing or fixed biasing?
  196. diy vt-52 pushpull AMP
  197. Aikido Cathode Follower HUM Problem
  198. Superhet set HMV 438 Schematic help pls
  199. Output transformer for 100Hz and up
  200. Output transformers in series to simulate center-tap for push pull
  201. LED Biasing
  202. assembling a LITE LS-69 Hybrid Balance pre-amp
  203. Question about hifi power stage design
  204. Help with Magnavox EL84 Console restore
  205. Triode Loadline Simulator for dummies tutorial?
  206. Stromberg Carlson AP-54 schematic LTSPICE
  207. Resistor in series with S.E. O.T. ?
  208. Audio Valve Eklipse volume pot value?
  209. jensen vs mundorf
  210. 47 driving 300B questions
  211. 6T9 Amp
  212. Eico HF-32 PEC Loudness Circuit
  213. MV-100B tubes running extremely hot
  214. PCL 86 parafeed?
  215. Hammond 370FX
  216. Question about tube in Little Bear P8 - 6N5P
  217. Mini Pentode tube testing in Triode mode?
  218. Sencore Pr57 Iso Trans, Power Conditioner for amp?
  219. Is hot bias really sonic preferable versus cold bias ?
  220. Aikido Problem - B+ dropping too much
  221. Klemt Echolette M40 Schematic
  222. My S.E.T remade again - the DOS
  223. I need help to recognize these two vacuum tubes
  224. found a box...
  225. Advice on triode connecting a 'JZ6 tube
  226. Beard P100 pcb disassembly
  227. LM317 Heater 12ax7 ...not working
  228. 2A3 se amp power consumption
  229. "JJ" Tubes Vs other brands
  230. playing tube amps through a generator
  231. Need help with a preamp board I bought on eBay
  232. Question on Tube Rectifier..help please.
  233. 2A3 Hum Problems in SE (Please Help!)
  234. 240v to 110v for Sun Valley JB-300B
  235. Tubelab SPP Schematic
  236. SE output transformer
  237. single-ended.com annoyance
  238. A cheapo decent splitter
  239. Lightbulb Base Failure
  240. Madison Fielding Rcvr -- Filament Trick
  241. Converting from UL to Triode: Is this correct?
  242. white follower for driving mosfets.
  243. Distance between two audio input valves
  244. Series Caps on Power Supply
  245. Most expensive parts in DIY tube amp
  246. Filter Choke Selection
  247. 6072A as DAC outputstage
  248. adapting line level to suitcase record player
  249. Aikido Noval Stereo Questions
  250. 100K 2CH Volume pot recommendation

Content Relevant URLs by vBSEO 3.3.2