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. Masco MA25N repair
  2. Sunday's Project
  3. 5881- 6l6
  4. Gas-Rectifier power supply
  5. How to get more juice out of this shunt regulator
  6. Resistors on DHT Cathode
  7. Noise floor rise on heathkit W4-AMs when power supply transformers were swapped
  8. Help me finish up this SET project (multiple questions / ramblings)
  9. This Is Cool !!
  10. output bias servo
  11. Looking for dual power triodes.
  12. Need advice selecting a 2A3 design
  13. Feedback basics
  14. tubalizer..
  15. The 6b4g
  16. 6N6P Operating Points
  17. Lundahl+EL84 PP+concertina+input stage
  18. Help wanted for a truly loco project. (A Tube--gainclone hybrid guitar amp!)
  19. Looking for circuit of SE amp. for Eimac 100TH
  20. Counterpoint Sa-3000 Circuit Diagram
  21. compressor Faiirchild 670 DIY
  22. How much headroom for a choke---to stop it from humming?
  23. Bay Area Diy Festival
  24. Using Eagle for Tubes designs
  25. Worst that could happen?
  26. Identifying output tx.
  27. Small pre
  28. Cathode follower driver
  29. comment on this B+ supply
  30. ODD TUBES, what to look for?
  31. 2A3 SE and Edcorp tranny
  32. Differential amplifier with 12AX7
  33. Bogen Challenger CH30 Amplifier
  34. do I need to use a heatsink on a DN2540 in a B+ supply?
  35. Transformer, 10K 1:1 - which one?
  36. Where to find Blackgate Caps?
  37. Passive Pre-Amp causes huge power loss?
  38. Rubbish fluorescent tubes: Eterna Lighting (UK), GE (US)
  39. Melos TM90 ST schematic?
  40. My first tube preamplifier:)
  41. Opinions on the Conrad Johnson MV75 amplifier please.
  42. Favorite Tubes
  43. SS replacement for 83 tube ?
  44. AMC CVT 2030 Output Transformer.
  45. 6-ohm speaker to tube amp
  46. What tubes share the pinout with the 5687?
  47. SMPS for B+ discussion
  48. Building a 200W+ bass amp
  49. need help understanding voltage regulator schematic (using CCS) from Raleigh Audio
  50. SS No R No C Power Supply for Tubes
  51. FREDs? Replace 1N4003 rectifier diodes?
  52. Hot running regulated dc filament supply for aikido preamp
  53. B+ TX. overkill?
  54. 33 Power Pentode Design Pointers Needed
  55. What Wiki?
  56. help understanding updated DRD from J Elliano's site (using 6AN4 instead of 6n1p)
  57. Zen SE84TS
  58. 5687 tube
  59. Tube vs. Semiconducter rectification
  60. Bogen CHB35 Mods and Preamp ideas
  61. I Want To Build A 100+Watt per/channel Tube Poweramp
  62. Phonodude problem
  63. enjoythemusic's t-rex amp: where is the +70VDC tap?
  64. Earthing and how it effects sound.
  65. Rectifier question
  66. Help for SE Main Transformer
  67. 6D22S Getter Question
  68. Repair of a McIntosh MC225 power amp
  69. OPA627 with tube buffer....
  70. Bell Stereophonic 3030 help
  71. Choosing the line stage preamp.
  72. I Need Help, Mcintosh/Marantz 7 content
  73. For 45 > 845: selecting an 9.5/ 10 Interstage
  74. How to reduce gain of this Tube Preamplifier ?
  75. looking for pp amp schematic without nfb
  76. Pseudo dual mono PS?
  77. WE404A drive 6L6 solution
  78. Looking for info on loudness control
  79. Tubes and minority carriers
  80. suggestions for 3 projects please
  81. DIY tube preamp kit
  82. M6 lamination: what is it?
  83. why is it that most tube projects uses copper sheetmetal?
  84. Sources in the Philippines / Manila
  85. Tube noise - Help
  86. Strange reverb circuit
  87. Tiny tube amp
  88. DC heating directly heated output valves
  89. Alps 250k in a Pas-3 Question
  90. 1st cap heats up...
  91. RCA VR Tube engineering data
  92. dropping heater voltage
  93. Please Help with Sound Valves M40 Monoblock Bias Adjustment Procedure!!!
  94. Old Sony SE OPT's /w 600r tap... cathode feedback maybe?
  95. Which is the poor man 45 tube?
  96. Audio Note Low Gain Quest Power Amplifier
  97. Quad II: Which resistors?
  98. Designing a preamp with two tubes
  99. ARC Classic 30 problem
  100. Why does the 6AS7 have such high Miller capacitance ?
  101. Driving an unusal Z=1k5-2k input spring reverb w/o tranny
  102. serching 5A6 beam power pentode data/curves/schematics for AF practice amp
  103. HPHV regulator measurement
  104. DHT Topology Comparison Question
  105. Secondary Tap of Power Transformer?
  106. Soft-clipping Circuit/tubecad
  107. lack of bass in a 6h30 design
  108. Difference between two novals
  109. C3g
  110. All Tube Stereo power amplifier
  111. what gas VR tube?
  112. KT88 schematic
  113. Help me understand the topologies here...
  114. Finished my Amp, Need to build a PS
  115. Push-Pull driver stage?
  116. Floating the heaters
  117. Replacing Power Transformer
  118. When car audio & tubes collide...
  119. 6N6P and 6SN7 Operating point suggestions
  120. NOS pF capacitors voltage rating?
  121. Tubes in Vietnam
  122. Passive pre order?
  123. layout help
  124. junkbox amp help
  125. required specs of an input step up transformer, into a 45, to allow it drive an 845
  126. 6as7 SRPP output stage
  127. Bias range and selenium rectifier
  128. OTL's and aircraft transformers
  129. PSE EL34 - valve rectification question
  130. A 2a3 Amplifier
  131. James Transformer BS
  132. Plate Voltage on 12ax7a
  133. Parallel Triodes and Load Lines
  134. Steve Bench OTL
  135. High power P-P EL34/6550/KT88 amp suggestions
  136. Stepped attenuators - break before make?
  137. audionote 144 OPT comment pls...
  138. KT88 and Hammond Transformer Schematics
  139. How do I know that my measured AC voltage is precise?
  140. 6C33B-C push pull with output transformer
  141. EL84 grid voltage?
  142. seperate power supply?
  143. Mysterious tektronix power supply
  144. tube amp subwoofer hum problem
  145. How to test transformer's current rating?
  146. Death/Black Metal sound on Crate 6212
  147. 4654/4699 pentodes
  148. Output tubes on a Marshall JCM900
  149. vacuum tube logic gate
  150. Screen current
  151. Any tube-sleuths out there know who made these Daystrom tubes?
  152. With this meter reading, enough to know Fuse is the culprit?
  153. need comments on amp design
  154. KEF/Celestion speakers for tube use...
  155. Another cheap fix - MOT as plate choke.
  156. XAM Mark II B
  157. How to test voltages on secondaries?
  158. Audio innovation L1 valve replacement
  159. Is this in-rush current?
  160. TETRODE amplifiers
  161. Audio Shop Eifl Corporation
  162. 6sn7 Buffer
  163. Marantz 8b operating voltages
  164. amplifier with 813 valves
  165. Changing plate resistor in live circuitry.
  166. 2xEL34 vs. 4xEL84 vs. 2x6L6 vs. 4x6V6
  167. KT88 drivers
  168. Simple Hybrid SE EL84 UL amp.. comments please.
  169. max input impedance for // el84's and other ?
  170. Please Help.. PCL81
  171. Some troubles with PSUD. A little help please !
  172. Why D getters?
  173. Help me information of the tubes?
  174. Questions about this line stage
  175. 5Z4P rectifier tube question
  176. Need help from Aikido builder
  177. Aikesi賍机el34尋找國外代理,可以送一台!!
  178. Direct heating triodes are really better?
  179. Audio Reality is back, in digital format
  180. Stoetkit 25W integrated amp
  181. Switchable stages with Tubelab抯 hybrid MOSFET/ 845 SE amp?
  182. Tube Pre Amplifier for SEWA 7 Watt ClassA MOSFET
  183. Michaelson Audio Odysseus Problem.
  184. ASC metal can polypro caps: ground the metal can to AC ground?
  185. anyone living in australia (hopefully adelaide) willing to lend their puncher/bit?
  186. ReinoutdV
  187. Priboj amp schematic
  188. EL84 in ultra-linear mode
  189. internal shielding
  190. RIAA: what does it stand for?
  191. Socket Mounting Rings
  192. heathkit sa2 - new question
  193. RCA R35, 39 & 57 Terminal Usage...
  194. 45 into an 845 parafeed circuit
  195. Tubes power supply 220 t0 300V ?
  196. ripple values in B+ supply
  197. Capacitors and tubes for AA5?
  198. Dynaco PAS Rebuild
  199. Audio Research SP9 Circuit Diagram HELP!
  200. ARC reference II schematic
  201. 71a Line Stage and Miller Capacitance
  202. Low plate voltage pentode (<40v) for diff pair?
  203. loadlines for newbie.
  204. Measuring approx RMS power O/P
  205. Hybrid Aikido-ish gain stage
  206. Loftin-White coupling Questions
  207. 807 screen regulation
  208. What kills an opt tranny?
  209. EAR529 schematic diagram
  210. World Designs KEL84 Valve Amplifier
  211. what 300B design would you recommend but...
  212. Replacement conductance meter for Hickok 533A
  213. My RIAA Phono Stage Project
  214. A2 Questions
  215. World Audio Design
  216. Seek for your comments/advice to newbie on Tube world
  217. CCSed LTP validity?
  218. Suitability of transmitter tubes for musical amplifiers
  219. Anyone using an 813 in pentode?
  220. Electrolytic in the feedback loop
  221. El34 PP Vs. El34 PSE
  222. RIAA Phono Amp Design
  223. Matching resistors to 1% or Better
  224. Wirewound cathode resistor
  225. Tube Hybrid Amp.
  226. Nasty ground loop
  227. ECC88 Class B
  228. Cree diodes
  229. Old Tube Amp Servicer In Nj???
  230. Vg-k max
  231. Anyone used PT15 / VT104 ?
  232. rebuild a Musical Fidelity X-10D ??
  233. Transformer Building
  234. Identifying weird signal transformer
  235. 100watt mono blocks
  236. Resistor combination calculator - RESCALC
  237. Aikido choice of valves (or tubes, if you will)
  238. Pin 9 on 6n6P, 6H30, etc
  239. Croft Super Micro meets Acoustat TNT200
  240. tube mic preamp kit??
  241. The SACD Meets Tubes
  242. Useful Abbreviations
  243. cap value for 6X4 rectifier?
  244. One B+ for the both driver and output tube if they are identical?
  245. Fisher 500B Schematic Question
  246. SE Output Transfromers Question
  247. Amplifier Project
  248. Grid Stopper for parallel sides of dual triode
  249. centre tap or floating heaters?
  250. Converting 6.3V to 6.3VCT Quick questions

Content Relevant URLs by vBSEO 3.3.2