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

  1. ST-70 OPT, A-470 question
  2. meixing 805 tube amp problems
  3. Advice for NOOBie - Dad's Scott LK-72
  4. KT66 SE amp, grid current or not?
  5. How do I achieve more output power?
  6. Driver stage load resistor
  7. More Edcor XSM10K/10K Specs
  8. DC filament
  9. driver stages
  10. Bay Area DIY is Cancelled Because....
  11. Is constant filament current better way to build amps?
  12. Next amp build - Trainwreck - Princeton - Deluxe ???
  13. Quicksilver M135 Output Transformers Color Code?
  14. Dynaco ST70 clone, tubes substitution question
  15. caddocks mk132: has anyone used them for tube projects?
  16. Current rating and tube current draw
  17. PP splitters again
  18. preamp with output trannies.
  19. Is it the 6SN7 or me?
  20. Manufacture date of 6SN7s
  21. simple 12AU7 cathode follower
  22. How's your bench, what's your favorite setup/tool ?
  23. Siemens H42 AM/FM receiver circuit diagram?
  24. 429A load lines
  25. Mu-stage on output
  26. My new project, 2 x KT88 60W amp
  27. Tube Amp Hum
  28. Modding MEIXING MC 3008
  29. Will this work for an EL84 push pull?
  30. "Integrated" or "stand alone"
  31. Heater to cathode voltage limits in cascodes???
  32. some Japanese can help me? (OPT trafo winding)
  33. Quicksilver 8417 a class C amp?
  34. Newcomer, where to start?
  35. Benefits of Potted Output Transformers
  36. Transformer question
  37. 6AW6A, Unloaded
  38. Aikido PSU help
  39. Plate to Cathode Cap -- what's this??
  40. Need Help Understanding/Optimising a Schematic
  41. Simple basic question quick
  42. problem on thorens PR15 (strange filaments circuity)
  43. My 1W 5687 SE Direct Coupled Power Amp
  44. VT-25 linestage + step-down trafo
  45. What to do with 803's
  46. Newbie: KT88 amp info needed
  47. 805 tube amp, uProcessor controlled
  48. Class A Tube BJT Hybrid
  49. John Broskie's enhanced T8
  50. Audio Research SP6 E
  51. Andr Charlin anybody got his Tube Amp
  52. Info needed - Shuguang SG120-C Integrated Amp
  53. Help with 6SN7 preamp
  54. 12b4 vs. aikido linestage
  55. KT88/6550 as Triode
  56. 6AU6WA triode connected as a line amp?
  57. A few basic noobie questions.
  58. Which connector for PSU/chassis B+ supply?
  59. Quad II-Forty schematic ?:
  60. Audio Research Manuals
  61. I was thinking
  62. Is this OK for the Etude Preamp?
  63. gary pimm's latest self-biasing CCS circuit
  64. 46 tube pre
  65. BEZ T9B Intermittent problem
  66. Heathkit W-5M rebuild
  67. Masco MA25N repair
  68. Sunday's Project
  69. 5881- 6l6
  70. Gas-Rectifier power supply
  71. How to get more juice out of this shunt regulator
  72. Resistors on DHT Cathode
  73. Noise floor rise on heathkit W4-AMs when power supply transformers were swapped
  74. Help me finish up this SET project (multiple questions / ramblings)
  75. This Is Cool !!
  76. output bias servo
  77. Looking for dual power triodes.
  78. Need advice selecting a 2A3 design
  79. Feedback basics
  80. tubalizer..
  81. The 6b4g
  82. 6N6P Operating Points
  83. Lundahl+EL84 PP+concertina+input stage
  84. Looking for circuit of SE amp. for Eimac 100TH
  85. Counterpoint Sa-3000 Circuit Diagram
  86. compressor Faiirchild 670 DIY
  87. How much headroom for a choke---to stop it from humming?
  88. Bay Area Diy Festival
  89. Using Eagle for Tubes designs
  90. Worst that could happen?
  91. Identifying output tx.
  92. Small pre
  93. Cathode follower driver
  94. comment on this B+ supply
  95. ODD TUBES, what to look for?
  96. 2A3 SE and Edcorp tranny
  97. Differential amplifier with 12AX7
  98. Bogen Challenger CH30 Amplifier
  99. do I need to use a heatsink on a DN2540 in a B+ supply?
  100. Transformer, 10K 1:1 - which one?
  101. Passive Pre-Amp causes huge power loss?
  102. Rubbish fluorescent tubes: Eterna Lighting (UK), GE (US)
  103. Melos TM90 ST schematic?
  104. My first tube preamplifier:)
  105. Opinions on the Conrad Johnson MV75 amplifier please.
  106. Favorite Tubes
  107. SS replacement for 83 tube ?
  108. AMC CVT 2030 Output Transformer.
  109. 6-ohm speaker to tube amp
  110. What tubes share the pinout with the 5687?
  111. SMPS for B+ discussion
  112. SS No R No C Power Supply for Tubes
  113. Hot running regulated dc filament supply for aikido preamp
  114. B+ TX. overkill?
  115. 33 Power Pentode Design Pointers Needed
  116. What Wiki?
  117. help understanding updated DRD from J Elliano's site (using 6AN4 instead of 6n1p)
  118. Zen SE84TS
  119. 5687 tube
  120. Tube vs. Semiconducter rectification
  121. Bogen CHB35 Mods and Preamp ideas
  122. I Want To Build A 100+Watt per/channel Tube Poweramp
  123. Phonodude problem
  124. enjoythemusic's t-rex amp: where is the +70VDC tap?
  125. Earthing and how it effects sound.
  126. 6D22S Getter Question
  127. Repair of a McIntosh MC225 power amp
  128. OPA627 with tube buffer....
  129. Bell Stereophonic 3030 help
  130. Choosing the line stage preamp.
  131. I Need Help, Mcintosh/Marantz 7 content
  132. For 45 > 845: selecting an 9.5/ 10 Interstage
  133. How to reduce gain of this Tube Preamplifier ?
  134. looking for pp amp schematic without nfb
  135. Pseudo dual mono PS?
  136. WE404A drive 6L6 solution
  137. Looking for info on loudness control
  138. Tubes and minority carriers
  139. suggestions for 3 projects please
  140. DIY tube preamp kit
  141. M6 lamination: what is it?
  142. why is it that most tube projects uses copper sheetmetal?
  143. Sources in the Philippines / Manila
  144. Tube noise - Help
  145. Tiny tube amp
  146. DC heating directly heated output valves
  147. Alps 250k in a Pas-3 Question
  148. 1st cap heats up...
  149. RCA VR Tube engineering data
  150. dropping heater voltage
  151. Please Help with Sound Valves M40 Monoblock Bias Adjustment Procedure!!!
  152. Old Sony SE OPT's /w 600r tap... cathode feedback maybe?
  153. Which is the poor man 45 tube?
  154. Audio Note Low Gain Quest Power Amplifier
  155. Quad II: Which resistors?
  156. Designing a preamp with two tubes
  157. ARC Classic 30 problem
  158. Why does the 6AS7 have such high Miller capacitance ?
  159. serching 5A6 beam power pentode data/curves/schematics for AF practice amp
  160. DHT Topology Comparison Question
  161. Secondary Tap of Power Transformer?
  162. Soft-clipping Circuit/tubecad
  163. lack of bass in a 6h30 design
  164. Difference between two novals
  165. C3g
  166. All Tube Stereo power amplifier
  167. what gas VR tube?
  168. KT88 schematic
  169. Help me understand the topologies here...
  170. Finished my Amp, Need to build a PS
  171. Push-Pull driver stage?
  172. Floating the heaters
  173. Replacing Power Transformer
  174. When car audio & tubes collide...
  175. 6N6P and 6SN7 Operating point suggestions
  176. NOS pF capacitors voltage rating?
  177. Tubes in Vietnam
  178. Passive pre order?
  179. layout help
  180. junkbox amp help
  181. required specs of an input step up transformer, into a 45, to allow it drive an 845
  182. 6as7 SRPP output stage
  183. OTL's and aircraft transformers
  184. PSE EL34 - valve rectification question
  185. A 2a3 Amplifier
  186. James Transformer BS
  187. Plate Voltage on 12ax7a
  188. Parallel Triodes and Load Lines
  189. Steve Bench OTL
  190. High power P-P EL34/6550/KT88 amp suggestions
  191. Stepped attenuators - break before make?
  192. audionote 144 OPT comment pls...
  193. KT88 and Hammond Transformer Schematics
  194. How do I know that my measured AC voltage is precise?
  195. 6C33B-C push pull with output transformer
  196. EL84 grid voltage?
  197. Mysterious tektronix power supply
  198. tube amp subwoofer hum problem
  199. 4654/4699 pentodes
  200. vacuum tube logic gate
  201. Screen current
  202. Any tube-sleuths out there know who made these Daystrom tubes?
  203. With this meter reading, enough to know Fuse is the culprit?
  204. need comments on amp design
  205. KEF/Celestion speakers for tube use...
  206. Another cheap fix - MOT as plate choke.
  207. XAM Mark II B
  208. Audio innovation L1 valve replacement
  209. TETRODE amplifiers
  210. Audio Shop Eifl Corporation
  211. 6sn7 Buffer
  212. Marantz 8b operating voltages
  213. amplifier with 813 valves
  214. Changing plate resistor in live circuitry.
  215. 2xEL34 vs. 4xEL84 vs. 2x6L6 vs. 4x6V6
  216. KT88 drivers
  217. Simple Hybrid SE EL84 UL amp.. comments please.
  218. max input impedance for // el84's and other ?
  219. Please Help.. PCL81
  220. Some troubles with PSUD. A little help please !
  221. Why D getters?
  222. Help me information of the tubes?
  223. Questions about this line stage
  224. Need help from Aikido builder
  225. Aikesi_el34҇һ̨
  226. Direct heating triodes are really better?
  227. Audio Reality is back, in digital format
  228. Stoetkit 25W integrated amp
  229. Switchable stages with Tubelabs hybrid MOSFET/ 845 SE amp?
  230. Tube Pre Amplifier for SEWA 7 Watt ClassA MOSFET
  231. Michaelson Audio Odysseus Problem.
  232. anyone living in australia (hopefully adelaide) willing to lend their puncher/bit?
  233. ReinoutdV
  234. Priboj amp schematic
  235. EL84 in ultra-linear mode
  236. internal shielding
  237. RIAA: what does it stand for?
  238. heathkit sa2 - new question
  239. RCA R35, 39 & 57 Terminal Usage...
  240. 45 into an 845 parafeed circuit
  241. Tubes power supply 220 t0 300V ?
  242. ripple values in B+ supply
  243. Capacitors and tubes for AA5?
  244. Dynaco PAS Rebuild
  245. Audio Research SP9 Circuit Diagram HELP!
  246. ARC reference II schematic
  247. 71a Line Stage and Miller Capacitance
  248. Low plate voltage pentode (<40v) for diff pair?
  249. loadlines for newbie.
  250. Measuring approx RMS power O/P

Content Relevant URLs by vBSEO 3.3.2