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

  1. Diy Line Amp 5670
  2. Quality difference between output transformers
  3. A group-build project for a tube power amp in India
  4. pilot light ideas please
  5. Small signal pentode - zener screen regulation - why not ??
  6. Another KT-88
  7. Rod Coleman filament supply circuit boards
  8. Losing the treble and transient response in this PX25 SE amp
  9. Calculating Zout for Pentode amp with NFB?
  10. Bypassing a volume pot
  11. Lab supply for cathode bias experiment question..
  12. Rheostat for adjustable "fixed" bias?
  13. Output transformer Question
  14. Real Cost of Decware Amplifiers
  15. Digitally driven tube pre-amp
  16. Real cost of Dynaco ST 70 Kits
  17. Fake electrolytics?
  18. Oddball Console Amplifier
  19. Transistor phase splitter (Yaqin MC-84L)
  20. Shuguang to stop 845 and 211
  21. first project.
  22. Help on capacitor info...
  23. Se Kt-66
  24. Is there a power supply guru?
  25. Direct Coupling question
  26. What's the best way to hook up an Isolation transformer
  27. Marzio &Jelasi's Direct Coupled SE Amp
  28. 6SN7 or 6SN7GT??
  29. HY40 Power Triode
  30. parallel capacitors in PS question
  31. Looking for feedback on Bottlehead amps
  32. First Watt F3 / Tube Audio Design TAD-125 Hibachi JFET amps
  33. S-5 Push Pull Power Supply Upgrade!
  34. Capacitor voltage rating conversion
  35. Output Transformer Air Gap
  36. PCF80 -Designing a Pentode Constant Current Sink - help needed.
  37. Purity and simplicity of amp design
  38. watt meters
  39. DIY Dynaco ST70
  40. Help need some info on this Raytheon
  41. Isolating parallel feed amplifiers
  42. Please help for B+ problem!
  43. Second Tubelab Simple SE board done
  44. "Sallen-Key" Public domain?
  45. Transformer questions / Good headphones?
  46. Which Spud Amp?
  47. Very simple SE Triode Help
  48. Tube friendly speakers
  49. Counterpoint SA5000 schematic
  50. Yaqin MC-10L
  51. Screen Driven Dissimilar Pentode SE Anti-Triode Spud
  52. Power tube bias increasing with signal.
  53. Preamp suggestion required pls
  54. How to change deemphasis from 75uS to 50uS for Fisher FM100
  55. Which 300B ?
  56. Custom OT for 6C33C tube - any advice
  57. s-5 tube amp hum troubles
  58. Cathode feedback on Mikael's SE KT88?
  59. RCA tube rectifier
  60. 300B Schematic
  61. Tubelab wiring
  62. My first amp!
  63. Building a Aikido preamplifier
  64. Tube rolling causes failure...
  65. Briefly subjected heaters to about 12v by accident.
  66. She lives!
  67. Wilcox Gay 5U
  68. 6EM7 project: maybe use more sand?
  69. 12B4A SET - any critiques on this project?
  70. Heathkit Manual
  71. What is this??
  72. Amp and Speakers decision
  73. Hey guitar joe...
  74. Question about Low Impedence Filters on a Bogen PA Head Need Info.
  75. counterpoint 3.1
  76. good book for learning the basics of tubes and tube amps
  77. Heater circuit - to twist or not to twist
  78. Rock and Flame: Wavebourn Barracuda
  79. Low voltage rectifiers?
  80. Horz Sweep amp Pent or screen drive
  81. Lessons learned building a 5VDC Power Supply for a 300B heater
  82. Getting frustrated--- amps and speakers for the noob
  83. Smallish chassis feasible? Multiple pics
  84. Using a Maida Regulator with a CCS
  85. Which Aikido pre-amp PCB for a newbie?
  86. Newbie wants to build Tubelab SE Monos.
  87. FM transmitter / PA
  88. What value attenuator would you use in front of a 396A in a preamp?
  89. Hybrid OTL Circlotron idea
  90. Heathkit aa-121
  91. Help please checking my B+ design
  92. Selenium rectifiers
  93. isolation transformer - high voltage.
  94. Cathode Bypass in a PP Output Stage
  95. Mcintosh Tube Amplifier Protection Circuit
  96. Where to start? Or: cool these plates down
  97. epiphone pacemaker 50 t
  98. Hum trouble on old PA amp
  99. Crazy newbie tube driver question
  100. UHF tubes for audio?
  101. Suggestion for this tube preamp
  102. PCB Board software?
  103. 300B push pull amp
  104. Simple P-P 84 proto
  105. Keeping cost down?
  106. Tube Amp Kit for newbie
  107. 40% Tap direct to plate
  108. Funny bias problem in PP EL34. Please help
  109. Transformer from Heathkit A-7 amp
  110. Any tube stores in Burnaby, Vancouver, Canada?
  111. B+ time delay circuit - your comments
  112. PCB mount line input transformer question
  113. SRPP circuit question
  114. Russian tubes - what pin material?
  115. Auto-bias - easy to convert to or not?
  116. old style anode/grid caps
  117. 6H30 Dual Triode
  118. Why would the frequency response vary so much on a pair of Monoblock amps?
  119. Disassembling output transformer
  120. Tube sockets
  121. H. P. Friedrichs
  122. The Rebuilding of Theta KT-88 Tube amp.
  123. Please check my PS pcb board layout for problems????
  124. glass capacitors
  125. Help w/fixing counterpoint Sa7 preamp
  126. IXYS 10M45 CCS IC question
  127. Wing-C 300B tubes and opinions
  128. PX25 DRD Power amp.
  129. rectifier tube recommendation please
  130. 6C33C to more standard triode conversion - any ideas?
  131. PP EL84 Build Questions (Bevois Valley)
  132. Tube line stage output impedance
  133. volume between gain stages
  134. Dyna ST70 PWR Tranny 6.3V Crnt Spec?
  135. Next Project - Darling Amplifier or 45
  136. tube magazines
  137. PSU choke help please
  138. PCB Trace properties for PP tube amplifier ( 12AQ5, 6v6 etc)
  139. TubelabSE phase
  140. EML 300B XLS and Mesh comparison
  141. UL - triode switch
  142. Spud anyone?
  143. Nooo! Almost have this amp built!
  144. Need help - Old cap can ID
  145. 16SL7+6SN7 Aikido
  146. 1600Hz Transformer?
  147. Anyone have a Bogen MX 60 Schematic they can post
  148. mc100b burned up
  149. DC heating, parallel diodes
  150. Identify Amperex Tube?
  151. Which speaker tap when going from UL to triode
  152. Tube wont bias...
  153. DIY stepped attenuator
  154. TV-7/DU KT88 Settings?
  155. Filmosound - Tone Knob - Tertiaries
  156. Hybrid Amp, Tube+MOS FET SE
  157. 3.1 integrated possible?
  158. Plate choke material, why to use amorphous core?
  159. Anything obviously wrong with my mic pre amp ?
  160. K-502 or Yamaha RX-V361 for Klipsch F-1?
  161. Help diagnosing phase-splitter
  162. question about Bruce's GGP preamp
  163. Rickenbacher amp HELP!!!
  164. interpreting max. values listed in datasheet
  165. zenith mlt 15 console record player problem
  166. ORIENTED or Not ORIENTED cores for OPT
  167. Audio Research SP-3-A-1 modified.........
  168. Tube heaters in series.
  169. Output transformer listening impressions?
  170. Tube buffer 6H6P after a DAC
  171. S-5 K16LS in enclosure - Pics
  172. Time to mourn the death of Broskie's Tube CAD blog?
  173. 6N6P preamp
  174. our Preamplifier using 2J27S tubes
  175. dc filament design question
  176. 6AV6A for meter driver
  177. AC wiring heaters, A or B ?
  178. Aikido preamp muting
  179. Help! New Yaoin MC-100B with intermittent crackling noise from speakers
  180. hummming YAHA
  181. leave a variac on all the time!
  182. More triodes
  183. Full Wave Rectifier
  184. Blowing B+ fuse
  185. PSRR of CF w/ CCS Sink
  186. MENG Series "EL34B" Integrated Amplifier
  187. Concertina Parafeed, or How to mess with OldEurope's mind...
  188. Phono stage success!
  189. A few pretty pictures and an ugly picture
  190. Rectifier with slow start up?
  191. Calibrating an emission tester
  192. What is this?
  193. 4XKT88 drive
  194. EL84 driven 2a3
  195. need suggestions for "standarizing" tube gain stages
  196. How long until someone tries
  197. Hickok Photo History - hidden web gem!
  198. Common Audio Tubes in standard use
  199. tango input transformer NN-6
  200. Filmosound dual pot
  201. Hi power Moskido with A/B output Bias
  202. how easy to make tube amp?
  203. metal film resistors or carbon?
  204. Quad II tubes replacement
  205. Sirius & FM
  206. Can someone look at a Counterpoint SA7 for me?
  207. The Wintersweet High-Vividity Project
  208. loftin white 801 amp
  209. Pics of unique design of amp chassis?
  210. Heathkit AA-32 modifications / upgrades
  211. Tango XE-20S Specification
  212. Question about Edcor output transformer
  213. SE EL84 output stage?
  214. New ST-70 Driver board from Blackburn Audio
  215. Transformer primary rating question
  216. Heathkit A7(c?) Rebuild
  217. Rewiring a socket to take 6GK6 instead of 6BQ5
  218. 317 CCS Question
  219. Active filter design software
  220. Larry Moore 10Y Squared
  221. Do you hear “pop” when you turn off your amp?
  222. Filmosound - Guitar - Ground
  223. Simple tube phono stage
  224. Tube phono amp repair/redesign help wanted
  225. Repairing a tape echo with tubes (Dynacord Echocord Super 62a)
  226. tube newbie needs guidance
  227. Interesting linestage optimizing ideas
  228. Powered up my Lafayette 224A for the first time!
  229. Hickok Upgrades
  230. Passive BP filter sim results
  231. 100mA heater tubes for phono
  232. Audiotester + M-audio - info + question
  233. Indestructible HV hybrid regulator!
  234. yet another modified 5-20 amplifier
  235. help with OT for 15 watt tube amp
  236. Power supply for 12SL7 phono preamp
  237. few questions
  238. mystery 5881
  239. does lower B+ cause scratchy distortion?
  240. SY please keep us updated about your site
  241. Cleveland Ohio members?
  242. Scope tricks for detecting rectifier/choke switching
  243. To choke or not to choke
  244. Tube rectified LC PS for 6SN7 Aikido - choke DCR question
  245. Convergent Audio Technology (CAT) SL-1 preamplifier
  246. Very low current CCS?
  247. Morgan Jones' E88CC Phono
  248. pse help, unity µ triode as a phase inverter
  249. variable capacitor volume control
  250. What to do with P-P transformer ?

Content Relevant URLs by vBSEO 3.3.2