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

  1. aikido thump
  2. bypassing preamp board in integrated amp
  3. Mallory FP 2x30/500 for Scott LX-72 - NOOB
  4. is it really required to use carbon comp for grid stoppers?
  5. How much trickle current can fixed bias cathode batteries stand?
  6. Who is the administrator?
  7. LM329 as voltage reference in a CCS.
  8. Euridice Preamp with 5842 and LL1660
  9. Trans. alignments
  10. Audio Note M3 Kit modification
  11. Has anyone simulated an "Aikido" amplifier?
  12. Upgrading ST70 PS w/ SS question
  13. 6N1 Chinese tube and others
  14. 12AT7 Linestage design
  15. ECF80 instead of 7199
  16. Modifying a tube tester into a curve tracer (oscilloscope X/Y outputs) ?
  17. 6922 vs 6SN7
  18. Transformer DCR's
  19. ferrite beads v. grid resistor
  20. What went wrong with my amp? Bass driver strange movement.
  21. Toccata Phono Preamp
  22. Drawbacks of Parafeed?
  23. aikido problem
  24. RS253 giant SE monoblock (Chinese)
  25. Plate chokes & Power chokes
  26. 10uF filter cap too small? PSU schematic inside
  27. HOT ROD DELUXE: CRACKLE...POP...what to do?
  28. converting Baldwin organ amp to guitar
  29. best amp for rock n roll
  30. quick question about tube relays
  31. Yeo's Simple EL84 with a twist
  32. ST-70 OPT, A-470 question
  33. meixing 805 tube amp problems
  34. Advice for NOOBie - Dad's Scott LK-72
  35. Peavey Valve King 112
  36. KT66 SE amp, grid current or not?
  37. 269EX in a champ?
  38. How do I achieve more output power?
  39. Driver stage load resistor
  40. More Edcor XSM10K/10K Specs
  41. DC filament
  42. driver stages
  43. Bay Area DIY is Cancelled Because....
  44. Is constant filament current better way to build amps?
  45. Next amp build - Trainwreck - Princeton - Deluxe ???
  46. Quicksilver M135 Output Transformers Color Code?
  47. Dynaco ST70 clone, tubes substitution question
  48. caddocks mk132: has anyone used them for tube projects?
  49. DIY Pro Audio Recording Gear - La2a, Pultec, more.
  50. size of filtering caps SS vs OTL tube
  51. Current rating and tube current draw
  52. NUCLON -- My first hybrid guitar amp
  53. PP splitters again
  54. preamp with output trannies.
  55. Is it the 6SN7 or me?
  56. My Kind of Guitar Tuner
  57. Regulating tube amp power supply - can Iget away with a simpler CLC filtering scheme?
  58. Manufacture date of 6SN7s
  59. simple 12AU7 cathode follower
  60. How's your bench, what's your favorite setup/tool ?
  61. Siemens H42 AM/FM receiver circuit diagram?
  62. 429A load lines
  63. Mu-stage on output
  64. My new project, 2 x KT88 60W amp
  65. Tube Amp Hum
  66. Modding MEIXING MC 3008
  67. crate vc 2110 schematic ???
  68. Will this work for an EL84 push pull?
  69. "Integrated" or "stand alone"
  70. Heater to cathode voltage limits in cascodes???
  71. some Japanese can help me? (OPT trafo winding)
  72. Quicksilver 8417 a class C amp?
  73. Newcomer, where to start?
  74. Benefits of Potted Output Transformers
  75. Transformer question
  76. 6AW6A, Unloaded
  77. Aikido PSU help
  78. Rectifier that doesn't need own filament supply?
  79. Plate to Cathode Cap -- what's this??
  80. Need Help Understanding/Optimising a Schematic
  81. Simple basic question quick
  82. problem on thorens PR15 (strange filaments circuity)
  83. My 1W 5687 SE Direct Coupled Power Amp
  84. VT-25 linestage + step-down trafo
  85. What to do with 803's
  86. Newbie: KT88 amp info needed
  87. 805 tube amp, uProcessor controlled
  88. Class A Tube BJT Hybrid
  89. John Broskie's enhanced T8
  90. Audio Research SP6 E
  91. André Charlin anybody got his Tube Amp
  92. Info needed - Shuguang SG120-C Integrated Amp
  93. Help with 6SN7 preamp
  94. 12b4 vs. aikido linestage
  95. KT88/6550 as Triode
  96. 6AU6WA triode connected as a line amp?
  97. A few basic noobie questions.
  98. Which connector for PSU/chassis B+ supply?
  99. Quad II-Forty schematic ?:
  100. Audio Research Manuals
  101. I was thinking
  102. silicon or tube rectifier?
  103. Is this OK for the Etude Preamp?
  104. gary pimm's latest self-biasing CCS circuit
  105. 46 tube pre
  106. BEZ T9B Intermittent problem
  107. Heathkit W-5M rebuild
  108. Masco MA25N repair
  109. Sunday's Project
  110. 5881- 6l6
  111. Gas-Rectifier power supply
  112. How to get more juice out of this shunt regulator
  113. Resistors on DHT Cathode
  114. Noise floor rise on heathkit W4-AMs when power supply transformers were swapped
  115. Help me finish up this SET project (multiple questions / ramblings)
  116. This Is Cool !!
  117. output bias servo
  118. Looking for dual power triodes.
  119. Need advice selecting a 2A3 design
  120. Feedback basics
  121. tubalizer..
  122. The 6b4g
  123. 6N6P Operating Points
  124. Lundahl+EL84 PP+concertina+input stage
  125. Help wanted for a truly loco project. (A Tube--gainclone hybrid guitar amp!)
  126. Looking for circuit of SE amp. for Eimac 100TH
  127. Counterpoint Sa-3000 Circuit Diagram
  128. compressor Faiirchild 670 DIY
  129. How much headroom for a choke---to stop it from humming?
  130. Bay Area Diy Festival
  131. Using Eagle for Tubes designs
  132. Worst that could happen?
  133. Identifying output tx.
  134. Small pre
  135. Cathode follower driver
  136. comment on this B+ supply
  137. ODD TUBES, what to look for?
  138. 2A3 SE and Edcorp tranny
  139. Differential amplifier with 12AX7
  140. Bogen Challenger CH30 Amplifier
  141. do I need to use a heatsink on a DN2540 in a B+ supply?
  142. Transformer, 10K 1:1 - which one?
  143. Where to find Blackgate Caps?
  144. Passive Pre-Amp causes huge power loss?
  145. Rubbish fluorescent tubes: Eterna Lighting (UK), GE (US)
  146. Melos TM90 ST schematic?
  147. My first tube preamplifier:)
  148. Opinions on the Conrad Johnson MV75 amplifier please.
  149. Favorite Tubes
  150. SS replacement for 83 tube ?
  151. AMC CVT 2030 Output Transformer.
  152. 6-ohm speaker to tube amp
  153. What tubes share the pinout with the 5687?
  154. SMPS for B+ discussion
  155. Building a 200W+ bass amp
  156. need help understanding voltage regulator schematic (using CCS) from Raleigh Audio
  157. SS No R No C Power Supply for Tubes
  158. FREDs? Replace 1N4003 rectifier diodes?
  159. Hot running regulated dc filament supply for aikido preamp
  160. B+ TX. overkill?
  161. 33 Power Pentode Design Pointers Needed
  162. What Wiki?
  163. help understanding updated DRD from J Elliano's site (using 6AN4 instead of 6n1p)
  164. Zen SE84TS
  165. 5687 tube
  166. Tube vs. Semiconducter rectification
  167. Bogen CHB35 Mods and Preamp ideas
  168. I Want To Build A 100+Watt per/channel Tube Poweramp
  169. Phonodude problem
  170. enjoythemusic's t-rex amp: where is the +70VDC tap?
  171. Earthing and how it effects sound.
  172. Rectifier question
  173. Help for SE Main Transformer
  174. 6D22S Getter Question
  175. Repair of a McIntosh MC225 power amp
  176. OPA627 with tube buffer....
  177. Bell Stereophonic 3030 help
  178. Choosing the line stage preamp.
  179. I Need Help, Mcintosh/Marantz 7 content
  180. For 45 > 845: selecting an 9.5/ 10 Interstage
  181. How to reduce gain of this Tube Preamplifier ?
  182. looking for pp amp schematic without nfb
  183. Pseudo dual mono PS?
  184. WE404A drive 6L6 solution
  185. Looking for info on loudness control
  186. Tubes and minority carriers
  187. suggestions for 3 projects please
  188. DIY tube preamp kit
  189. M6 lamination: what is it?
  190. why is it that most tube projects uses copper sheetmetal?
  191. Sources in the Philippines / Manila
  192. Tube noise - Help
  193. Strange reverb circuit
  194. Tiny tube amp
  195. DC heating directly heated output valves
  196. Alps 250k in a Pas-3 Question
  197. 1st cap heats up...
  198. RCA VR Tube engineering data
  199. dropping heater voltage
  200. Please Help with Sound Valves M40 Monoblock Bias Adjustment Procedure!!!
  201. Old Sony SE OPT's /w 600r tap... cathode feedback maybe?
  202. Which is the poor man 45 tube?
  203. Audio Note Low Gain Quest Power Amplifier
  204. Quad II: Which resistors?
  205. Designing a preamp with two tubes
  206. ARC Classic 30 problem
  207. Why does the 6AS7 have such high Miller capacitance ?
  208. Driving an unusal Z=1k5-2k input spring reverb w/o tranny
  209. serching 5A6 beam power pentode data/curves/schematics for AF practice amp
  210. HPHV regulator measurement
  211. DHT Topology Comparison Question
  212. Secondary Tap of Power Transformer?
  213. Soft-clipping Circuit/tubecad
  214. lack of bass in a 6h30 design
  215. Difference between two novals
  216. C3g
  217. All Tube Stereo power amplifier
  218. what gas VR tube?
  219. KT88 schematic
  220. Help me understand the topologies here...
  221. Finished my Amp, Need to build a PS
  222. Push-Pull driver stage?
  223. Floating the heaters
  224. Replacing Power Transformer
  225. When car audio & tubes collide...
  226. 6N6P and 6SN7 Operating point suggestions
  227. NOS pF capacitors voltage rating?
  228. Tubes in Vietnam
  229. Passive pre order?
  230. layout help
  231. junkbox amp help
  232. required specs of an input step up transformer, into a 45, to allow it drive an 845
  233. 6as7 SRPP output stage
  234. Bias range and selenium rectifier
  235. OTL's and aircraft transformers
  236. PSE EL34 - valve rectification question
  237. A 2a3 Amplifier
  238. James Transformer BS
  239. Plate Voltage on 12ax7a
  240. Parallel Triodes and Load Lines
  241. Steve Bench OTL
  242. High power P-P EL34/6550/KT88 amp suggestions
  243. Stepped attenuators - break before make?
  244. audionote 144 OPT comment pls...
  245. KT88 and Hammond Transformer Schematics
  246. How do I know that my measured AC voltage is precise?
  247. 6C33B-C push pull with output transformer
  248. EL84 grid voltage?
  249. seperate power supply?
  250. Mysterious tektronix power supply

Content Relevant URLs by vBSEO 3.3.2