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

  1. ODD TUBES, what to look for?
  2. 2A3 SE and Edcorp tranny
  3. Differential amplifier with 12AX7
  4. Bogen Challenger CH30 Amplifier
  5. do I need to use a heatsink on a DN2540 in a B+ supply?
  6. Transformer, 10K 1:1 - which one?
  7. Where to find Blackgate Caps?
  8. Passive Pre-Amp causes huge power loss?
  9. Rubbish fluorescent tubes: Eterna Lighting (UK), GE (US)
  10. Melos TM90 ST schematic?
  11. My first tube preamplifier:)
  12. Opinions on the Conrad Johnson MV75 amplifier please.
  13. Favorite Tubes
  14. SS replacement for 83 tube ?
  15. AMC CVT 2030 Output Transformer.
  16. 6-ohm speaker to tube amp
  17. What tubes share the pinout with the 5687?
  18. SMPS for B+ discussion
  19. Building a 200W+ bass amp
  20. need help understanding voltage regulator schematic (using CCS) from Raleigh Audio
  21. SS No R No C Power Supply for Tubes
  22. FREDs? Replace 1N4003 rectifier diodes?
  23. Hot running regulated dc filament supply for aikido preamp
  24. B+ TX. overkill?
  25. 33 Power Pentode Design Pointers Needed
  26. What Wiki?
  27. help understanding updated DRD from J Elliano's site (using 6AN4 instead of 6n1p)
  28. Zen SE84TS
  29. 5687 tube
  30. Tube vs. Semiconducter rectification
  31. Bogen CHB35 Mods and Preamp ideas
  32. I Want To Build A 100+Watt per/channel Tube Poweramp
  33. Phonodude problem
  34. enjoythemusic's t-rex amp: where is the +70VDC tap?
  35. Earthing and how it effects sound.
  36. Rectifier question
  37. Help for SE Main Transformer
  38. 6D22S Getter Question
  39. Repair of a McIntosh MC225 power amp
  40. OPA627 with tube buffer....
  41. Bell Stereophonic 3030 help
  42. Choosing the line stage preamp.
  43. I Need Help, Mcintosh/Marantz 7 content
  44. For 45 > 845: selecting an 9.5/ 10 Interstage
  45. How to reduce gain of this Tube Preamplifier ?
  46. looking for pp amp schematic without nfb
  47. Pseudo dual mono PS?
  48. WE404A drive 6L6 solution
  49. Looking for info on loudness control
  50. Tubes and minority carriers
  51. suggestions for 3 projects please
  52. DIY tube preamp kit
  53. M6 lamination: what is it?
  54. why is it that most tube projects uses copper sheetmetal?
  55. Sources in the Philippines / Manila
  56. Tube noise - Help
  57. Strange reverb circuit
  58. Tiny tube amp
  59. DC heating directly heated output valves
  60. Alps 250k in a Pas-3 Question
  61. 1st cap heats up...
  62. RCA VR Tube engineering data
  63. dropping heater voltage
  64. Please Help with Sound Valves M40 Monoblock Bias Adjustment Procedure!!!
  65. Old Sony SE OPT's /w 600r tap... cathode feedback maybe?
  66. Which is the poor man 45 tube?
  67. Audio Note Low Gain Quest Power Amplifier
  68. Quad II: Which resistors?
  69. Designing a preamp with two tubes
  70. ARC Classic 30 problem
  71. Why does the 6AS7 have such high Miller capacitance ?
  72. Driving an unusal Z=1k5-2k input spring reverb w/o tranny
  73. serching 5A6 beam power pentode data/curves/schematics for AF practice amp
  74. HPHV regulator measurement
  75. DHT Topology Comparison Question
  76. Secondary Tap of Power Transformer?
  77. Soft-clipping Circuit/tubecad
  78. lack of bass in a 6h30 design
  79. Difference between two novals
  80. C3g
  81. All Tube Stereo power amplifier
  82. what gas VR tube?
  83. KT88 schematic
  84. Help me understand the topologies here...
  85. Finished my Amp, Need to build a PS
  86. Push-Pull driver stage?
  87. Floating the heaters
  88. Replacing Power Transformer
  89. When car audio & tubes collide...
  90. 6N6P and 6SN7 Operating point suggestions
  91. NOS pF capacitors voltage rating?
  92. Tubes in Vietnam
  93. Passive pre order?
  94. layout help
  95. junkbox amp help
  96. required specs of an input step up transformer, into a 45, to allow it drive an 845
  97. 6as7 SRPP output stage
  98. Bias range and selenium rectifier
  99. OTL's and aircraft transformers
  100. PSE EL34 - valve rectification question
  101. A 2a3 Amplifier
  102. James Transformer BS
  103. Plate Voltage on 12ax7a
  104. Parallel Triodes and Load Lines
  105. Steve Bench OTL
  106. High power P-P EL34/6550/KT88 amp suggestions
  107. Stepped attenuators - break before make?
  108. audionote 144 OPT comment pls...
  109. KT88 and Hammond Transformer Schematics
  110. How do I know that my measured AC voltage is precise?
  111. 6C33B-C push pull with output transformer
  112. EL84 grid voltage?
  113. seperate power supply?
  114. Mysterious tektronix power supply
  115. tube amp subwoofer hum problem
  116. How to test transformer's current rating?
  117. Death/Black Metal sound on Crate 6212
  118. 4654/4699 pentodes
  119. Output tubes on a Marshall JCM900
  120. vacuum tube logic gate
  121. Screen current
  122. Any tube-sleuths out there know who made these Daystrom tubes?
  123. With this meter reading, enough to know Fuse is the culprit?
  124. need comments on amp design
  125. KEF/Celestion speakers for tube use...
  126. Another cheap fix - MOT as plate choke.
  127. XAM Mark II B
  128. How to test voltages on secondaries?
  129. Audio innovation L1 valve replacement
  130. Is this in-rush current?
  131. TETRODE amplifiers
  132. Audio Shop Eifl Corporation
  133. 6sn7 Buffer
  134. Marantz 8b operating voltages
  135. amplifier with 813 valves
  136. Changing plate resistor in live circuitry.
  137. 2xEL34 vs. 4xEL84 vs. 2x6L6 vs. 4x6V6
  138. KT88 drivers
  139. Simple Hybrid SE EL84 UL amp.. comments please.
  140. max input impedance for // el84's and other ?
  141. Please Help.. PCL81
  142. Some troubles with PSUD. A little help please !
  143. Why D getters?
  144. Help me information of the tubes?
  145. Questions about this line stage
  146. 5Z4P rectifier tube question
  147. Need help from Aikido builder
  148. Aikesi賍机el34尋找國外代理,可以送一台!!
  149. Direct heating triodes are really better?
  150. Audio Reality is back, in digital format
  151. Stoetkit 25W integrated amp
  152. Switchable stages with Tubelab抯 hybrid MOSFET/ 845 SE amp?
  153. Tube Pre Amplifier for SEWA 7 Watt ClassA MOSFET
  154. Michaelson Audio Odysseus Problem.
  155. ASC metal can polypro caps: ground the metal can to AC ground?
  156. anyone living in australia (hopefully adelaide) willing to lend their puncher/bit?
  157. ReinoutdV
  158. Priboj amp schematic
  159. EL84 in ultra-linear mode
  160. internal shielding
  161. RIAA: what does it stand for?
  162. Socket Mounting Rings
  163. heathkit sa2 - new question
  164. RCA R35, 39 & 57 Terminal Usage...
  165. 45 into an 845 parafeed circuit
  166. Tubes power supply 220 t0 300V ?
  167. ripple values in B+ supply
  168. Capacitors and tubes for AA5?
  169. Dynaco PAS Rebuild
  170. Audio Research SP9 Circuit Diagram HELP!
  171. ARC reference II schematic
  172. 71a Line Stage and Miller Capacitance
  173. Low plate voltage pentode (<40v) for diff pair?
  174. loadlines for newbie.
  175. Measuring approx RMS power O/P
  176. Hybrid Aikido-ish gain stage
  177. Loftin-White coupling Questions
  178. 807 screen regulation
  179. What kills an opt tranny?
  180. EAR529 schematic diagram
  181. World Designs KEL84 Valve Amplifier
  182. what 300B design would you recommend but...
  183. Replacement conductance meter for Hickok 533A
  184. My RIAA Phono Stage Project
  185. A2 Questions
  186. World Audio Design
  187. Seek for your comments/advice to newbie on Tube world
  188. CCSed LTP validity?
  189. Suitability of transmitter tubes for musical amplifiers
  190. Anyone using an 813 in pentode?
  191. Electrolytic in the feedback loop
  192. El34 PP Vs. El34 PSE
  193. RIAA Phono Amp Design
  194. Matching resistors to 1% or Better
  195. Wirewound cathode resistor
  196. Tube Hybrid Amp.
  197. Nasty ground loop
  198. ECC88 Class B
  199. Cree diodes
  200. Old Tube Amp Servicer In Nj???
  201. Vg-k max
  202. Anyone used PT15 / VT104 ?
  203. rebuild a Musical Fidelity X-10D ??
  204. Transformer Building
  205. Identifying weird signal transformer
  206. 100watt mono blocks
  207. Resistor combination calculator - RESCALC
  208. Aikido choice of valves (or tubes, if you will)
  209. Pin 9 on 6n6P, 6H30, etc
  210. Croft Super Micro meets Acoustat TNT200
  211. tube mic preamp kit??
  212. The SACD Meets Tubes
  213. Useful Abbreviations
  214. cap value for 6X4 rectifier?
  215. One B+ for the both driver and output tube if they are identical?
  216. Fisher 500B Schematic Question
  217. SE Output Transfromers Question
  218. Amplifier Project
  219. Grid Stopper for parallel sides of dual triode
  220. centre tap or floating heaters?
  221. Converting 6.3V to 6.3VCT Quick questions
  222. Russian Nuvistors...Anyone tried them?
  223. 一台300bc胆机,大家给点意见,谢谢
  224. Australian Amp Manufacturers
  225. Old radio quick question re PS
  226. Kt90 Pse
  227. Velleman K4040 is Always Blowing Output Tubes
  228. looking for transformer with the following specs?
  229. 5686 amplifier schematic
  230. Heaters for cathodes with a large swing
  231. 6DJ8 as phase splitter.
  232. New driver for SE 2A3
  233. I磛e made a Mu stage with 6888 and 6C45...
  234. Quick urgent Help plz !
  235. Cheap SET Kit for UK
  236. How can I change bias 6H30pi tube
  237. DHT heater voltage
  238. Ok SY...You Win
  239. Input level required- PP KT88
  240. SE 6C33C-B ; preview of a new Baby
  241. 2A3 grid DC voltage
  242. Dyna ST70 experience bypassing input tubes
  243. [Theory] Amplifier efficiency
  244. Pentode Cascode CCS
  245. Noval Relay
  246. Where to buy 6A5G ?
  247. AC or grounded DC for heater?
  248. EM84 based VUmeter "lines" don't go to zero
  249. 'scoping tube amps
  250. Preferred operating points of small signal triodes

Content Relevant URLs by vBSEO 3.3.2