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

  1. SET monoblocks?
  2. EL84 Push Pull design from left over parts
  3. Strange UL Transformers
  4. Stabilization balanced currents in the PP stage.
  5. Current mirror stage in PP
  6. EL34 SE ultralinear schematic
  7. Question: Acceptable DC current in push-pull output transformer due to tube mismatch?
  8. Toroid Power Transformer For GM-70 845 211 1000V
  9. Building the "Crystal Palace" Amp
  10. Improved Sound Card Interface - Ideas and Suggestions?
  11. Upgrading OPTs in production amp? (Yaquin MC-10L)
  12. any good Triode 6H8C preamp schematics out there???
  13. pushpull 6aq5 distortion
  14. Mr. Lian 845 SET more kit rather than commercial product.
  15. Opinion for otl ocl headphone amp
  16. Tube-newby wanting to make a good tube amp
  17. Anyone used a voltage tripler PS?
  18. Audioromy 828A / FU-29 tube layout
  19. Choosing Cathode Bypass Capacitor
  20. Ground loop gremlins
  21. Crackling Amp after Accident
  22. New CCS/ depletion mode MOSFETs available... experience anyone?
  23. Mengyue Mini
  24. Parafeed quest
  25. Determining linearity - differential gain stage
  26. 6HB6 - Any pratical experience?
  27. 27 Tube Preamp design questions
  28. Output Transformers Mount Position
  29. Critique please: Fixed bias 7591 SE
  30. Coupling Cap Improvements?
  31. RL 12T 15
  32. Tube instead of anode resistor
  33. HELP!! Terrible 50Hz hum in Mullard 10W DIY amp
  34. My New 45 SET (choke-loaded 6SN7, direct-coupled)
  35. Hf31 fidelity valve type
  36. Design of transformers for valve amplifiers.Part2
  37. Harman Kardon ta5000X alignment/manual
  38. Help with an analog meter hack
  39. dirkwright phono
  40. Zener Voltage Regulator
  41. Fisher X-101-B Substitute for 7591
  42. UNU-pnono riaa mm preamp
  43. My old amps
  44. Switching regulator on Kickstarter
  45. my yaqin 100b will not bias on v1 v3
  46. Zenith model B835R
  47. Want to build 2a3 amp for old radio
  48. Preamp Advice
  49. simple 5687 pre amp help
  50. Pulling TV From 61 Maggie Imperial Console?
  51. I can buy some 6U9's cheap - are they any good, and what could I build?
  52. K8011/K8010 PCB build thread
  53. Choosing an op point when using a tube 'off label'
  54. Choke inputs
  55. Unbalanced In > Balanced Out line amp - How To Do It?
  56. 6146b output transformer. I'm new and I need help.
  57. Your first DiY Low Cost/Low Voltage tube AMP
  58. Need some advice on OPT for kt88/6l6
  59. 1:1:1 transformers
  60. Output transformer in the cathode?
  61. Popping DC
  62. Power transformer wiring issues
  63. easy question - Magnavox 86-01 owners...
  64. Mic preamp input transformer alternative?
  65. What's the Best Way to Reduce Gain in a Preamp
  66. safety with high voltage input capacitor ?
  67. SE EL84 amp - reducing 100Hz hum
  68. Photos of large DHT preamps? (Or large amps in general)
  69. Minimum pin length (noval)
  70. Biasing of KT120
  71. SE to balanced transformer
  72. Decoupling Cap value - How Much?
  73. Cathode bypass Cap vs. No Bypass Cap
  74. Interesting circuit I thought.
  75. Yet another K12G thread
  76. 6N3 tube preamp question
  77. Driver vs Power tube
  78. Help in Bias tube amp for Adis Devy 7
  79. Tubes and HT
  80. HiFiMan EF-2A schematic sought
  81. Please, help with a WE91 project on behalf of a friend
  82. Proposed Headphone Amp Overhaul?
  83. protection of downstream line amp
  84. Is the 6E6P suitable for audio?
  85. me clone proto EL/PL 504
  86. Improving headphone amplifier
  87. 5902 LSTPICE Model
  88. Canary CA-301 PSU
  89. 3B28 oscilator
  90. A lot of schematics
  91. V8 amp
  92. market by Jac music
  93. 6P3C-1 SE ? .
  94. Cary slp70: Worth to upgrade?
  95. Hickok 123B tube tester
  96. Adding NFB makes headphone amp sound AWFUL!!!
  97. Filaments hard wired to B+ on EZ81 base
  98. What the bird is OS 18/600?
  99. ccs 10m90s what is wrong?
  100. Topology for balanced preamp
  101. 6v6 vs. 6l6 vs. 807 soundwise..
  102. Opinions/Advice on Triode Strap method
  103. Something like a Miniwatt N3 or APPJ PA0901A
  104. Extraordinary harmonics. Type 47 # tube amp.
  105. Made a new tube amp, 6J5 +27 +45
  106. Anyone ever play around with a GU-72?
  107. Possibility of using a UTC LMI-500 transformer...
  108. Aikido transformer
  109. Can someone explain why you need to re-adjust the balance on a tube amp every time
  110. Which factory made these tubes ?
  111. 813 and gm70
  112. 13E1 Push Pull
  113. dump find.
  114. ...6SN7GT operating points tube help.......
  115. 6L6 6SJ7 Amp please pick faults if any
  116. Updated DIY EL34B 6SJ7 SE Amp
  117. 6C18 x 6C33
  118. Vintage tube amp find
  119. any benefit to screen-grid drive a 6V6?
  120. Brown face Scott LK72
  121. Pilot 1060 integrated - make it better!
  122. Should I ground my K12G or my Bugle 2?
  123. 6c33 amp convert to 6c41
  124. STA-LEVEL thumbs problem
  125. Amp motorboating at power up
  126. Spice models for AL4 and RS242 tubes
  127. Mains Switch
  128. Suggestions for big output stage needed
  129. Very Good (or best?) 12B4 schematic?
  130. Amplifier for active bookshelf speakers
  131. Olson AM-240 schematic needed
  132. Valve amp - maintenance
  133. Your opinion about Rotel 930AX to hyrbid mod
  134. Weston Tube Tester 774-5
  135. Tube circuit sim software for free?
  136. 6v6 family tubes
  137. Troublesome bias resistor, cathodyne stage
  138. 6AQ5 excellent for line stage?
  139. Datasheet 6P42s and 6P45C
  140. Quad / Cyrus impedance matching
  141. Zobel network at primary audio trafo?
  142. ECL86 question
  143. 500c buzzing power transformer
  144. LM4702+6L6GB/807
  145. TubeAudio Mixer Blog
  146. Finally started on my 6L6 amp. Need tube suggestions.
  147. Just another Scott thread
  148. Design for overdriven output stage
  149. Seeking Articals On Audio Transformer Design & Construction.
  150. Bias el34 pp
  151. Photo Gallery.
  152. Precision S35
  153. 6L6WGB
  154. 6BQ7A Driver
  155. Advise for Simpson 340 signal generator problem
  156. Armaco TTHF or Calrad AP 15 What to do What to do?...
  157. Screen Power and Warmup
  158. Wanting copies of Prof. Alexander Bereskin's transformer winding pictures.
  159. what's the brand of this capacitor sounds great ?
  160. Edcor CXSE25-8-3.2K or Transcendar TT-017-OT?
  161. PP 2A3 Fixed Bias
  162. RL12P35 convert to el34
  163. Statistical regulator from VA 4rd edition
  164. Matching Impedances (the Math behind it) Please Advise if you have a grasp. Xfmrs etc
  165. Help 6AQ5 pushpull
  166. HV Logic Control Approach
  167. Valve heater question
  168. Phase inverter adjustment - Fisher 80AZ
  169. Repurposing a Bogen CHB-35A
  170. SMPS
  171. Interstage and bias failure
  172. Grid 2 current for GU19-1
  173. 6x5 tube
  174. IT coupled 6BG6GA
  175. Mystery noise has got me baffled
  176. Dynaco PAS: too much liposuction?
  177. LP Tape Noise
  178. YAKOV ARONOV MA-100
  179. Help for balance-tone control-mode selector bypass
  180. Design of transformers for valve amplifiers
  181. Opinions please: seeking a first class DIY SET amp design
  182. PSU for 6N6P
  183. HOT B+ capacitors!
  184. Analog meter monitoring HT supply
  185. Lamm LL2.1 DC Offset problem
  186. 6L6GT/6SJ7 Valve Amp DIY
  187. BHExchange for BottleHead's
  188. 6BY5GA elevated heater question
  189. Tone controls
  190. EL84 "IP" questions
  191. KIT Single ended KT88
  192. HELP needed - LEAK Varislope 2 Stereo + Stereo 20 with pictures...
  193. All tube cap tube amp?
  194. 12AX7 preamp for DAC
  195. Grid resistors -> GND
  196. OTL headphone amp distorting & clipping: weak power supply?
  197. Broken bias resistors (Yaqin MC-10L)
  198. Tube Enclosure suggestion from Europe.
  199. Benefit/SQ of tube stage at the input of ss power amp
  200. Is 6907 and QQV03-20A tubes are same?
  201. Found some chokes
  202. 6SN7 at low plate currents
  203. 12AU7, 12BH7, Darker Less Bright Option
  204. Heater current effects
  205. Not using all the sections on multi-section cap
  206. DC heater supply dies on me
  207. 1972 Leak Varislope 2 Stereo
  208. OPT secondary ground, stacked supplies
  209. OTL for HeaPhone
  210. Voltage doubler and filament supply
  211. Please suggest me a 6V6 class AB amp
  212. Need Review of wiring up of this SRPP 6AS7 tube amp
  213. Hum in a triode 1H6G...help !
  214. 40w Class A PP KT66?
  215. My new small amp EL84 SE Triode
  216. tube preamp output impedance
  217. pete millet 807 amp
  218. Lost Negative Bias-Fixed Bias
  219. Aikido ('dead quiet') output impedance
  220. Looking for lineamp buffer schematics
  221. Nagra VPA 845
  222. How to match 6C45?
  223. Yet another question about cathode bias (led+pnp)
  224. Ideal System for 1960?
  225. What replaces an IN541 diode?
  226. Bottlehead Eros or Tube4Hifi PH16
  227. Psvane 2a3 T Mk II reliable vender
  228. Odd Wima cap markings
  229. Chinese Amp kit experience
  230. Considerations about headph. OCL
  231. Trying to solve a Plate Follower Problem
  232. Nichicon Caps
  233. Footprint Noval ECC83 Altium
  234. Interference in hybrid amp
  235. wiring DHT filaments with center tapped secondaries
  236. B+ of Curcio Daniel II
  237. Stepped Attenuators Questions
  238. Noisy Ground? (Probably not a loop)
  239. New Production Telefunken
  240. Tube horizontal mounting position
  241. "Ask Jan First" parts website in Germany
  242. EZ215 Stereo 5881 Amp Project
  243. CCS help dn2540 send 340v to the chassis
  244. That's What She Said RH84 Build Log
  245. Help figuring out this output transformer.
  246. 5881 PPP Cathode Bias B+
  247. Measuring DHT filament V with minimal effect.
  248. 100hz hum with Audio Research vs-55
  249. Volume potentiometer
  250. Driver for 2A3C

Content Relevant URLs by vBSEO 3.3.2