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. PP Amplifier Advice Sought: EL34/KT88 UL/Triode
  2. Search for StepUp 12V->142V @ 6mA
  3. Magnavox 8802 upgrade suggestions?
  4. filament supply using two bridges
  5. 6N2P-EV gain factor ??
  6. Talking tube replacements
  7. Audi Institute VR70E amp
  8. Share Fixed Bias using Diodes
  9. Finished my Tube DI/Preamp
  10. Arcturus Blue Tubes
  11. share your experience on sound of hybrid amps
  12. ideas for a simple ECL82/86 p-p amp?
  13. Tube replacements or substitution
  14. 12ax7 / 12au7
  15. Triode/Pentode Loadline Calculator
  16. Troubleshooting a Fender Champion 600
  17. High Voltage Derived Bias Supply
  18. Universal hybrid triode-mosfet input/drive stage
  19. IT coupled 1624 or 807 amp
  20. Raytheon / Western Electric JW-5755 / 420A
  21. Calculate unknown operating point from known cathode resistor
  22. 5763 triode curves
  23. HICKOK 539a QUESTION
  24. Constant current heaters
  25. max G2 voltage 1624 tube (Tabor)
  26. Need reference for Dynaco MKIV amp build
  27. Biasing Valve on Bipolar Power Supply
  28. Tubelab sse choke input 6v6
  29. $1800 tube amp
  30. Testing a 6N3 5670 etc on a B&K 600 tester
  31. Could anyone shed any light on this amp for me?
  32. Translation Russian EL84SE design please?
  33. Determining plate and screen voltage
  34. I Don't want to set the forum on fire . . .
  35. Valab Ultra Low Noise Regulatible
  36. Westinghouse 6973 Tube
  37. Which is worth burning or keeping
  38. OPT position
  39. Remove volume pot
  40. Headphone amp ideas?
  41. Good Looking 6SN7
  42. UTC Transformer
  43. Cap substitution help
  44. Edcor replacement for w5m peerless opt
  45. Audyn True copper caps.
  46. No Feedback Balanced Line Design
  47. KT120 PP - "low power" baptized Vitruvian amplifier
  48. Senior Design Project
  49. Hovland Sapphire guidance needed
  50. Question about specialized OPT
  51. My first build tubelab SE
  52. k16ls tube amp on/off switch?
  53. SY Tube Phono Improvements?
  54. Tube newbie, anyone familar with s-5 k-502? Help needed please
  55. TVA-1 Michaelson & Austin with problems
  56. New to HIFI tube need advice
  57. Crosstalk between Triodes in Dual Triode Tubes
  58. 6L6GC instead of EL34
  59. Schade feedback and CFB
  60. Sansui AU-70 - Help Needed
  61. Pentode C.F, where to connect the suppressor grid ?
  62. Separate PSU for PP EL34 / 6SN7GT integrated amp
  63. Simple SE driver with mosfet (6sn7/307A) IRF820
  64. Is it safe to run pentode w/ no screen voltage for a min?
  65. Low B+ and CCS question
  66. Has anyone ever used slate in audio?
  67. Semi-Fixed Bias?
  68. Transformers MIC and Phono
  69. Russian capacitor markings
  70. 6L6GC...More Voltage...or More Current?
  71. help me
  72. Anybody built/heard Melquiades amp
  73. Elevated grid bias
  74. Oscillation found in Luxman LX33
  75. RCA phono amp project
  76. Test of 45 Triode with EICO 625?
  77. Standard Silicon Diode Rectifier's VS Ultra Fast
  78. Output Transformer for L3 pre Audio Note
  79. "Boosted" Triode operation?
  80. 6HB6 UL push pull amp
  81. Interstage transformer ratio, spacecharge tubes in PP
  82. 6N6P line stage
  83. Revamping Tube Amp Monoblock - capacitor grounding concern
  84. 845 set bias.
  85. How to improve on a working Hybrid Amp: 832A Tube with MOSFETs
  86. tube outputs
  87. Coupling Cap Consistency
  88. Volume adjustment on 8ch at once
  89. Sub minature tube gain stage question.
  90. DHT PSE 2A3
  91. Plate voltage mic pre
  92. Estimating load for Duncan Amps PSU tool HOWTO?
  93. Shuguang Treasure Series 300B-Z not satisfactory!
  94. Choosing OP of small signal tubes with CCS in the cathode
  95. Aikido help needed
  96. Exploding 300B
  97. power output of EL34
  98. 76tube into C3M (triode) via LL1660 to PP outputstage
  99. best operating points for e182cc tube
  100. Any thoughts about this volume/bal arrangement
  101. Filament tension spring material
  102. DC coupled SE SChade amp
  103. First build 6V6 based
  104. Failed Converting UL to Pentode!?
  105. 1955 kids record player hum puzzle
  106. subwoofer output from my tube preamp
  107. EL84 SE Amp - specific transformer
  108. "GOOD" backup KT-88
  109. New or Old Output Transformer?
  110. Motorola console recap question
  111. Plate voltage on preamp tube too high
  112. Good valve design calculator website
  113. Ultra-on push-pull tetrode 6550
  114. My introduction to tube amps. The good, the bad, and the ugly.
  115. How do I calculate local feedback %?
  116. Newbie greeting & Resource
  117. Tips/Help With a Dying OTL Headphone Amp
  118. 6B4G and ECC83
  119. Maron buys a tube amp
  120. Newbie
  121. 845 AC filaments, my experience
  122. 8552 finals ?
  123. Low voltage 3W S.E. little amp, need comments and suggestions
  124. Single ended push pull ultra linear or?...
  125. Hello and questions about Magnavox SE amp
  126. Amp identification
  127. Millett DCPP No Output.
  128. using a Hammond 835 interstage ?
  129. Recommendation on versitile tube tester
  130. Mullard 6SN7GT
  131. RIAA tube pre amp
  132. Cheapo Ebay voltmeter
  133. Jolida SJ202a Schematic
  134. Tetra All in One Phono Preamp voltage
  135. Console pull advice
  136. Local feedback on IT secundary (PP amp)
  137. Computerized Curve Tracer Project
  138. Is 6w enough and can i use phone power amp?
  139. Yaqin MS-12B preamp - how to get more gain?
  140. Inductor Multiplier Patent
  141. KT90
  142. 6L6GC Hybrid Partial Feedback
  143. 7868 to 7591a conversion help
  144. SOS! 21st Century Regulator Dead!
  145. Transformer Placement - To shield or not to Shield
  146. cap multiplier suggestions wanted
  147. Bridging stereo tube amp to one more powerful mono output
  148. Weird pentode connections
  149. My last S.E. amplifier (pentode driver + Beam Power Tube Ultralinear mode)
  150. Please help info UTC transformer
  151. ARC SP-6B Tube Heaters Glow Very Bright at Startup
  152. SUPER budget DIY tube amp - need help
  153. LEAK TL/12
  154. What decides gain of a valve stage ?
  155. 6AH4 Preamp..A great option for line stage
  156. Kondo M77
  157. 2C22 SRPP
  158. Resistor question
  159. Problem with X10-d as preamp
  160. Pilot One AA-410 1950s
  161. Measuring VAC on coupling cap
  162. Tube phono stage load
  163. ANUBIS - Another Tube-Transistor Hybrid Amplifier
  164. Panasonic HV Electrolitics
  165. Unison Research Smart 845 & dripping sticky goo!
  166. Seeking Danish help to locate two 1950's magazine articles
  167. Valve cruelty ...
  168. Re- calculating RIAA network
  169. Just another cool toy to look at
  170. sherwood s-5000 vs. s-5500 iv OPt's
  171. Sound of 300B SET by Satoru Kobayashi
  172. Using UL taps instead of the anode taps to alter inpedence
  173. Help fast please! Type 3 Ei KT90's - Pre or Post War? How do you know?
  174. 807 PSE schematic design need
  175. 3 direct coupled 2A3 amps
  176. Tube preamplifier with chip power amp
  177. Anyone used IXCP10M90S ltspice model ?
  178. and the quiz identify power trans continue
  179. Valve HT power supply common-mode noise
  180. 12AX7 and 6AS5 tube amplifier
  181. Working with Eagle and single channel tube amp board.
  182. New hands-on tutorial for Tube Newbies
  183. Help me to choose tube "1 no ring" "2 has ring"
  184. Chinese board 6L6 KT88 is it worth???
  185. Valve Rectifier Testing
  186. Harman Kardon TA-120 Output Transformer
  187. Single ended transformer as pushpull?
  188. Resurrecting a nOrh SE9 Integrated Amp
  189. Fisher Amps?
  190. Repurposing an old Gulbransen Organ tube amp
  191. Help, the sound is silken or blow up?
  192. Now here's an idea - The DIYF QUAD
  193. Parallel output SE amp options
  194. What tube is equivalent 5879?
  195. Filament Xfmr: can I trade volts for amps?
  196. GU50 PP possible with this iron ?
  197. Hifi tube amps - overall sound
  198. Preamp grounding questions
  199. Tube rectifiers
  200. DIY PL84 + E180F
  201. McIntosh on How It's Made
  202. Choke input LCLC supply - question on minimum current
  203. EBC3 & CBL1 Tube AMP
  204. CLASS A HYBRID POWER AMP
  205. MXL V69 Mogami Edition signal cuts in/out
  206. Ultra-linear plate characteristic curve for EL34
  207. Need help to modify circuit to suit replacement power XFMR
  208. Line preamp schematic for 5GH8A wanted.
  209. help please - modify phono corrector
  210. Help me: Brimar 5Z4G, 5Y3GT is this an equivalent to a 5Y3WGTA?
  211. A Russian glow tube regulator with specs of 75V 60mA ?
  212. Help with filament for ecc88
  213. How much power transformer is necessary?
  214. testing the 300b tube
  215. Headphone amplifier outputs, so many permutations!
  216. tube footprint in Eagle
  217. Need VTVM repairs
  218. First Timer - DIY Tube Amp
  219. Help identify OT please
  220. gEDA and tubes
  221. Triode Electronics Issues?
  222. RCA BC5B consolette manual?
  223. Help with converting EL37 amp to KT66
  224. treadmill choke
  225. Preamp OPT
  226. Probleme with Volume Pot
  227. Simple SE 6L6 2 watt Homebrew
  228. is 6J32P equivalent of EF806 ?
  229. new tubes vs old ones
  230. 6p36s tube torture.
  231. Questions re: Bypass of B+ to differential amp
  232. Tube choice for yaqin cd3 buffer
  233. yesterday and today
  234. 260VDC need how much VAC transformer, is it 184VAC?
  235. preamp static
  236. Tube Line or Phono Stage bare kit
  237. Grounding of Hammond transformers
  238. Spud Amplifier with 6E5P Tube
  239. RAT Tube Tester build
  240. need a little help with identification
  241. aikido 12vac help needed
  242. Mullard 3-3 PCB
  243. OTL Using OPT
  244. VA/CF 6SN7 preamp input points?
  245. Copper losses in output transformers
  246. Yaqin MC550 Anyone?
  247. Bigger value output coupling
  248. DIY KT88 SEUL
  249. Leben CS300x feedback loop cap
  250. 6T8 / EABC80 as phase splitter / other uses

Content Relevant URLs by vBSEO 3.3.2