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

  1. Modding Aikido to non-Aikido such as SRPP?
  2. DN2540 plate load.
  3. Help! Did my power cable blow his tubes?
  4. 211 amp SRPP driver
  5. Tubelab SE problem
  6. tube to replace opamps in cd player
  7. Jolida 302b started to crack/pop once a minute
  8. why it doesn't work - 300B SE power amp
  9. Trio KW-70 schematic also known as WX-400 under kenwood name
  10. New DC to AC to high voltage AC idea?
  11. LED bias for 6N1P driver
  12. DIY tube amp general inquiry
  13. 6as7 Aikido headphone amplifier
  14. Cold tubes in warm amp = smoke?
  15. Keroes: Direct-Coupled amplifier
  16. Tube ID help please.
  17. exactly HOW does a tube amp work? or a vacuum tube?
  18. David Berning's zh-230 - whats going on here?
  19. EICO HF86 scratch build question please
  20. what to do with a 12W 600ohm to 4/8 ohm output transformer?
  21. Telewatt VS71M
  22. Yamamoto 09S 300B SE Amp Problem
  23. Marantz-9
  24. 6V6 amp question
  25. Wood chassis
  26. My first project SE(T) into high end audio.
  27. Supermalloy for the Power transformer?
  28. Can I build a screen reg. with IXYS 10M45?
  29. Modified DynacoMkIV
  30. Refurbising Conrad Johnson Premier One
  31. Would using a 16ohm speaker damage my SE output transformers?
  32. Grommes/PE S-35 questions
  33. Concertina phase inverter with LED bias - is this completely wrong?
  34. Parafeed turn-on delay
  35. I'm looking for 6an8 (as V1) schematics
  36. New Project - EL84 PP and preamp - suggestions welcome
  37. The sound of modern transformers compared with vintage gear
  38. Determining the core cross sectional area, Afe, for SE OPT
  39. HT power supply high?
  40. under-run push pull
  41. 12B4 Linestage Woes
  42. Transcendent Sound Mini-Beast
  43. A Question About Positive Feedback
  44. Help with opera consonance M100plus
  45. Just received 2x PT Choke OT. best implementation ?
  46. Just received 2x PT Choke OT. best implementation ?
  47. Mystery Valve ID
  48. Oddball OT with extra secondary winding
  49. Help with Multi Section Can Cap replacement
  50. 600V bench variable supply to test transmitting valves
  51. Heater-cathode voltage spec interpretation
  52. Tell me why this wont work.
  53. headphone amp for Senns HD600
  54. Transformer orientation and suggestions.
  55. 12AU7 stereo SE mini-amp build!
  56. allen type 20a schematic
  57. 2010 lemon year for EH 6922 tubes
  58. Chinese GU50 PP
  59. Gain, Vpp and attenuation at each stage
  60. 6n14p headphone amp
  61. Heater Lifter
  62. KT88 & 6550 Pentode power output?
  63. Biasing Improved Williamson
  64. Vox V941 active FX Loop - I'm looking for schematics
  65. Lowering the Volume Control on Tube Amps
  66. Got the Hum out!! Thanks All
  67. How hot KT88 get? Anybody take a reading?
  68. Broskie Unbalancer
  69. Phase splitting transformer design
  70. Red plate KT88
  71. 6N16B preamp
  72. Eimac 450th nos
  73. how much clearance above tubes for KT88 enclosure
  74. Cathode preheating???
  75. RIAA Question - Power
  76. Linearity of Red RCA 5692
  77. What gauge enclosure for KT88 AMP?
  78. Output Transformer Issue???
  79. Maggie 8802 placement issue
  80. Can you recommend a tube tester?
  81. 6550 tube protection socket
  82. PT laminations are usable as OT laminations ?
  83. Are These Authentic Russian Military 1578 Vacuum Tubes?
  84. Amp ID Please
  85. Help for Main Transformer Spec for CCDA
  86. Switching SE and balanced inputs/outputs
  87. kt88 PP rectifier.
  88. How much Blue glow is ok?
  89. Recommendations on How To mono a pre amplifier?
  90. 6H6pi curves available?
  91. 1p24b
  92. help, Built from scratch Kalamazoo 2 noise
  93. 5CZ5/5BQ7A single ended amp
  94. Hopefully a simple question.
  95. 211 tube recommendations
  96. Need HELP with TUBE IMP
  97. Another unknown tube
  98. Triode Bias 101
  99. Bogen MO-200A transplant /conversion
  100. 5U4 o bridge rectifier
  101. Choosing the right transformer
  102. V-Cap Help
  103. Older tubes sound better
  104. 6J7 preamp
  105. Menygue mini/music angel amp
  106. Driving a Behringer INuke Nu1000
  107. cathode follower ecc88 on 60volt
  108. Docs for Heathkit AA-23?
  109. 45 tube amp schematic
  110. Old TO-R s15u, Should i fix it?
  111. Tube ID
  112. VTL driver tube question
  113. Fun with junk EL84 SE
  114. Enclosure ideas
  115. Burn in procedure for NOS necessary?
  116. Strange Lorenz ECC81 12AT7
  117. Amplifier first start up; Plays tone of signal generator with no speakers!
  118. Reports of the death of Audiophool have been greatly exaggerated
  119. help me identify some vintage tubes // need suggestions for possible applications!
  120. Lowering cost of audio output transformer
  121. Source for transformers in Europe
  122. morgan Jones HT caps & Anode Loads
  123. Tuning Negative feedback
  124. Hickok reference 6L6 for calibration..
  125. SET-NO FEEDBACK amplifier performance
  126. Stereo class A 6+6W - 2x 6L6G 1 x 6N2P
  127. Console Amplifier Pull:Voltages over Spec
  128. Help! My EL34B based amp arced at full volume.
  129. MUZAK 50's tube amp
  130. Tube break-in?
  131. Custom power tranny specs recommendations for 300B pse monoblocs
  132. mosfet source follower output stage.
  133. Winter upgrade project - new heating unit
  134. 6KM8 amp
  135. Power and output transformers to ground.
  136. Help with this schematic? B+? B++?
  137. What to do with this old amp? suggestions please.
  138. DIY CAT SL1 preamp
  139. Phase inverter, your comments welcomed!
  140. Basic Bias Question for PP Amp
  141. Oddwatt 5751/6550
  142. Please help me to identify Telefunken PCC ...
  143. Modification of 300B SE Amplifier
  144. 300B Tube and Amp Questions
  145. ST70 "Imposter"
  146. cathode follower question
  147. marconi tubes....can someone idntify these
  148. DeathTrap400 : : A Pretty Damn Good 300B Amp
  149. SOS: First Build, Lots of Hum
  150. 1959 Silvertone Syntronic Can Capacitor question
  151. KR Audio Marconi R valve amp?
  152. Distortion
  153. Tung-Sol 6098/6AR6 Substitution
  154. Dropout in RTP3 phono stage
  155. Audio Research EC-3 modification
  156. 300b all-DHT SET
  157. My first tube project !
  158. Trouble with homebuilt amp
  159. Music angel el34b problem
  160. Elecrolytic capacitor reforming
  161. The end of tubes?
  162. Two stages EL34 power amplifier
  163. 7199 replacement in AMPEX 6973
  164. IT coupled tube-SS hybrid amp suggestion- needs development
  165. Original Cary CAD-300se upgrades?
  166. Convert Integrated Tube Preamp to an amplifier
  167. McCurdy AM405 Schematics
  168. Looking for Neumann N149 power supply schematic
  169. B&K model 747 tube tester for EL34
  170. Behringer DEQ2496 for testing amplifiers and preamps frequency response ???
  171. I need datasheet of 8753 tube, help me!
  172. New 6L6GC Project. DC -> LTP
  173. EL84 in UL
  174. 1953 revere amp conversion
  175. Manley transformer specifications
  176. Recommended 300B SE Amplifier Designs
  177. Found a new interstage coupling method (?)
  178. Amplifier Distortion (Northern Electric)
  179. when do filament supplies need to be floated
  180. gm70 filiment transformers
  181. Replacing 6922 Preamp Tube in ARC LS7
  182. Please educate me: Tube testing, the life test, and Grid Leakage
  183. 6AR6 6098 Triode PP Load Line
  184. music reference rm5-4 schematics
  185. S5 K-12G output trans
  186. Transformer center tap question
  187. EF86 + 4*EL84PSE
  188. solid state relays for plate load switching?
  189. Dont have a power transformer?
  190. Kora Equinoxe Triode or Blue Circle BC-21.1 preamp?
  191. Pre-Amp For my Tubelab Simple P-P
  192. Power Transformer Help
  193. Analog Metric 2A3 PP Kit
  194. Good, starter OTL kit
  195. Dual SE amplifier? - (not PSE) - Take two!
  196. Mysterious SE OTL headphone amp from China?!
  197. Inv. Futterman with gain stages between PI and O/P?
  198. PSU configurations for tube amp
  199. HP Model 712b Regulated Power supply
  200. Dynaco low Power Amp
  201. 300b power suply
  202. Very Strange Preamp Issue
  203. WTB: I am looking for a Freed 1400V or Chicago 1200V/1400V Potted Power Transformer
  204. tube transformer suppliers in Mercosur
  205. Please Help: 6CJ3 Damper Diode Tube as Rectifier Question
  206. time delay sophia electric
  207. Twisting the leads of filter choke
  208. This SPUD's 4 U
  209. I am Looking for tubes
  210. Thuan
  211. Nanjing 6V6GT ( 6P6P)
  212. Should I keep this old stuff?
  213. 300b
  214. ganged output transformers
  215. Holco H4P Resistors, Should I use them?
  216. 6BX8 curves, help !
  217. SANSUI AU-70 or 1000A???
  218. General Electric YTW-1 Tube Checker
  219. Ground or amp hum-which?
  220. need help to fix the "hiss" on my tube preamp
  221. Best SE interstage 1:1 for min. 15mA?
  222. Dual Single Ended Amplifier? - (not PSE)
  223. RIP Forum Member "Ivey"
  224. Balanced Buffer Needed with a Balanced Volume Control?
  225. valves to replace opamps in cd player
  226. Replacing capacitors on Audio Research D40 power amp.
  227. No sound and low B+?
  228. Replacing capacitors on Audio Research D40 power amp.
  229. 2 Channel Tube Amp and Sub Connection
  230. EZ125 Amp Project
  231. Yaqin MS-22b Phono Amp
  232. First post and a couple P.P. questions
  233. adding a preamp to tube power amp
  234. 6SN7 6N8S preamp suggestions
  235. 300b polarity
  236. Electrolytic capacitor vs extra triode stage
  237. WE JAN 274B Dating
  238. EICO 666 Tester Help
  239. Hickock 550X signal voltage
  240. First Headphone tube amp kit to build??
  241. Anyone owns a Dynavox VR-307 Amplifier ?
  242. NOS potted Chicago Transformer 1BC-150
  243. capacitor voltage for tube amp power supply
  244. 808 SE Design Help!
  245. Why can't I build my own ARC LS-5 or CJ PV-12?
  246. Post-mortem on a 80 year old 2A3 amp
  247. 6e5p gm70 with 6d22s?
  248. 6L6-6V6-EL34-KT88-6CA7-EL84
  249. Scheme for SE amp
  250. $16,000

Content Relevant URLs by vBSEO 3.3.2