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

  1. EICO HF86 scratch build question please
  2. what to do with a 12W 600ohm to 4/8 ohm output transformer?
  3. Telewatt VS71M
  4. Yamamoto 09S 300B SE Amp Problem
  5. Marantz-9
  6. 6V6 amp question
  7. Wood chassis
  8. My first project SE(T) into high end audio.
  9. Supermalloy for the Power transformer?
  10. Can I build a screen reg. with IXYS 10M45?
  11. Modified DynacoMkIV
  12. Refurbising Conrad Johnson Premier One
  13. Would using a 16ohm speaker damage my SE output transformers?
  14. Grommes/PE S-35 questions
  15. Concertina phase inverter with LED bias - is this completely wrong?
  16. Parafeed turn-on delay
  17. I'm looking for 6an8 (as V1) schematics
  18. New Project - EL84 PP and preamp - suggestions welcome
  19. The sound of modern transformers compared with vintage gear
  20. Determining the core cross sectional area, Afe, for SE OPT
  21. HT power supply high?
  22. under-run push pull
  23. 12B4 Linestage Woes
  24. Transcendent Sound Mini-Beast
  25. A Question About Positive Feedback
  26. Help with opera consonance M100plus
  27. Just received 2x PT Choke OT. best implementation ?
  28. Just received 2x PT Choke OT. best implementation ?
  29. Mystery Valve ID
  30. Oddball OT with extra secondary winding
  31. Help with Multi Section Can Cap replacement
  32. 600V bench variable supply to test transmitting valves
  33. Heater-cathode voltage spec interpretation
  34. Tell me why this wont work.
  35. headphone amp for Senns HD600
  36. Transformer orientation and suggestions.
  37. 12AU7 stereo SE mini-amp build!
  38. allen type 20a schematic
  39. 2010 lemon year for EH 6922 tubes
  40. Chinese GU50 PP
  41. Gain, Vpp and attenuation at each stage
  42. 6n14p headphone amp
  43. Heater Lifter
  44. KT88 & 6550 Pentode power output?
  45. Biasing Improved Williamson
  46. Vox V941 active FX Loop - I'm looking for schematics
  47. Lowering the Volume Control on Tube Amps
  48. Got the Hum out!! Thanks All
  49. How hot KT88 get? Anybody take a reading?
  50. Broskie Unbalancer
  51. Phase splitting transformer design
  52. Red plate KT88
  53. 6N16B preamp
  54. Eimac 450th nos
  55. how much clearance above tubes for KT88 enclosure
  56. Cathode preheating???
  57. RIAA Question - Power
  58. Linearity of Red RCA 5692
  59. What gauge enclosure for KT88 AMP?
  60. Output Transformer Issue???
  61. Maggie 8802 placement issue
  62. Can you recommend a tube tester?
  63. 6550 tube protection socket
  64. PT laminations are usable as OT laminations ?
  65. Are These Authentic Russian Military 1578 Vacuum Tubes?
  66. Amp ID Please
  67. Help for Main Transformer Spec for CCDA
  68. Switching SE and balanced inputs/outputs
  69. kt88 PP rectifier.
  70. How much Blue glow is ok?
  71. Recommendations on How To mono a pre amplifier?
  72. 6H6pi curves available?
  73. 1p24b
  74. help, Built from scratch Kalamazoo 2 noise
  75. 5CZ5/5BQ7A single ended amp
  76. Hopefully a simple question.
  77. 211 tube recommendations
  78. Need HELP with TUBE IMP
  79. Another unknown tube
  80. Triode Bias 101
  81. Bogen MO-200A transplant /conversion
  82. 5U4 o bridge rectifier
  83. Choosing the right transformer
  84. V-Cap Help
  85. Older tubes sound better
  86. 6J7 preamp
  87. Menygue mini/music angel amp
  88. Driving a Behringer INuke Nu1000
  89. cathode follower ecc88 on 60volt
  90. Docs for Heathkit AA-23?
  91. 45 tube amp schematic
  92. Old TO-R s15u, Should i fix it?
  93. Tube ID
  94. VTL driver tube question
  95. Fun with junk EL84 SE
  96. Enclosure ideas
  97. Burn in procedure for NOS necessary?
  98. Strange Lorenz ECC81 12AT7
  99. Amplifier first start up; Plays tone of signal generator with no speakers!
  100. Reports of the death of Audiophool have been greatly exaggerated
  101. help me identify some vintage tubes // need suggestions for possible applications!
  102. Lowering cost of audio output transformer
  103. Source for transformers in Europe
  104. morgan Jones HT caps & Anode Loads
  105. Tuning Negative feedback
  106. Hickok reference 6L6 for calibration..
  107. SET-NO FEEDBACK amplifier performance
  108. Stereo class A 6+6W - 2x 6L6G 1 x 6N2P
  109. Console Amplifier Pull:Voltages over Spec
  110. Help! My EL34B based amp arced at full volume.
  111. MUZAK 50's tube amp
  112. Tube break-in?
  113. Custom power tranny specs recommendations for 300B pse monoblocs
  114. mosfet source follower output stage.
  115. Winter upgrade project - new heating unit
  116. 6KM8 amp
  117. Power and output transformers to ground.
  118. Help with this schematic? B+? B++?
  119. What to do with this old amp? suggestions please.
  120. DIY CAT SL1 preamp
  121. Phase inverter, your comments welcomed!
  122. Basic Bias Question for PP Amp
  123. Oddwatt 5751/6550
  124. Please help me to identify Telefunken PCC ...
  125. Modification of 300B SE Amplifier
  126. 300B Tube and Amp Questions
  127. ST70 "Imposter"
  128. cathode follower question
  129. marconi tubes....can someone idntify these
  130. DeathTrap400 : : A Pretty Damn Good 300B Amp
  131. SOS: First Build, Lots of Hum
  132. 1959 Silvertone Syntronic Can Capacitor question
  133. KR Audio Marconi R valve amp?
  134. Distortion
  135. Tung-Sol 6098/6AR6 Substitution
  136. Dropout in RTP3 phono stage
  137. Audio Research EC-3 modification
  138. 300b all-DHT SET
  139. My first tube project !
  140. Trouble with homebuilt amp
  141. Music angel el34b problem
  142. Elecrolytic capacitor reforming
  143. The end of tubes?
  144. Two stages EL34 power amplifier
  145. 7199 replacement in AMPEX 6973
  146. IT coupled tube-SS hybrid amp suggestion- needs development
  147. Original Cary CAD-300se upgrades?
  148. Convert Integrated Tube Preamp to an amplifier
  149. McCurdy AM405 Schematics
  150. Looking for Neumann N149 power supply schematic
  151. B&K model 747 tube tester for EL34
  152. Behringer DEQ2496 for testing amplifiers and preamps frequency response ???
  153. I need datasheet of 8753 tube, help me!
  154. New 6L6GC Project. DC -> LTP
  155. EL84 in UL
  156. 1953 revere amp conversion
  157. Manley transformer specifications
  158. Recommended 300B SE Amplifier Designs
  159. Found a new interstage coupling method (?)
  160. Amplifier Distortion (Northern Electric)
  161. when do filament supplies need to be floated
  162. gm70 filiment transformers
  163. Replacing 6922 Preamp Tube in ARC LS7
  164. Please educate me: Tube testing, the life test, and Grid Leakage
  165. 6AR6 6098 Triode PP Load Line
  166. music reference rm5-4 schematics
  167. S5 K-12G output trans
  168. Transformer center tap question
  169. EF86 + 4*EL84PSE
  170. solid state relays for plate load switching?
  171. Dont have a power transformer?
  172. Kora Equinoxe Triode or Blue Circle BC-21.1 preamp?
  173. Pre-Amp For my Tubelab Simple P-P
  174. Power Transformer Help
  175. Analog Metric 2A3 PP Kit
  176. Good, starter OTL kit
  177. Dual SE amplifier? - (not PSE) - Take two!
  178. Mysterious SE OTL headphone amp from China?!
  179. Inv. Futterman with gain stages between PI and O/P?
  180. PSU configurations for tube amp
  181. HP Model 712b Regulated Power supply
  182. Dynaco low Power Amp
  183. 300b power suply
  184. Very Strange Preamp Issue
  185. WTB: I am looking for a Freed 1400V or Chicago 1200V/1400V Potted Power Transformer
  186. tube transformer suppliers in Mercosur
  187. Please Help: 6CJ3 Damper Diode Tube as Rectifier Question
  188. time delay sophia electric
  189. Twisting the leads of filter choke
  190. This SPUD's 4 U
  191. I am Looking for tubes
  192. Thuan
  193. Nanjing 6V6GT ( 6P6P)
  194. Should I keep this old stuff?
  195. 300b
  196. ganged output transformers
  197. Holco H4P Resistors, Should I use them?
  198. 6BX8 curves, help !
  199. SANSUI AU-70 or 1000A???
  200. General Electric YTW-1 Tube Checker
  201. Ground or amp hum-which?
  202. need help to fix the "hiss" on my tube preamp
  203. Best SE interstage 1:1 for min. 15mA?
  204. Dual Single Ended Amplifier? - (not PSE)
  205. RIP Forum Member "Ivey"
  206. Balanced Buffer Needed with a Balanced Volume Control?
  207. valves to replace opamps in cd player
  208. Replacing capacitors on Audio Research D40 power amp.
  209. No sound and low B+?
  210. Replacing capacitors on Audio Research D40 power amp.
  211. 2 Channel Tube Amp and Sub Connection
  212. EZ125 Amp Project
  213. Yaqin MS-22b Phono Amp
  214. First post and a couple P.P. questions
  215. adding a preamp to tube power amp
  216. 6SN7 6N8S preamp suggestions
  217. 300b polarity
  218. Electrolytic capacitor vs extra triode stage
  219. WE JAN 274B Dating
  220. EICO 666 Tester Help
  221. Hickock 550X signal voltage
  222. First Headphone tube amp kit to build??
  223. Anyone owns a Dynavox VR-307 Amplifier ?
  224. NOS potted Chicago Transformer 1BC-150
  225. capacitor voltage for tube amp power supply
  226. 808 SE Design Help!
  227. Why can't I build my own ARC LS-5 or CJ PV-12?
  228. Post-mortem on a 80 year old 2A3 amp
  229. 6e5p gm70 with 6d22s?
  230. 6L6-6V6-EL34-KT88-6CA7-EL84
  231. Scheme for SE amp
  232. $16,000
  233. Hybrid power amp
  234. Diagnosis please
  235. On now! Jamerson's Ampeg
  236. BK 707 Tube Tester Mods
  237. monarch 614
  238. Separate Filament and B+ Switches
  239. Dynaco Low Power with 12AY7's
  240. PTP kits available?
  241. Which OP transformer and materials?
  242. Power of Tube Amp and Transistors Amp
  243. testing tubes
  244. current servo not voltage.
  245. Help Me, How to make Pre-amp using 12AU7 tube and Op-Amp Ic mix?
  246. 300b filament
  247. DHT SE auto bias circuit
  248. Anyone try swapping 6SN7 w/ 6F8G
  249. Eliminating Cathode Bypass Caps In SET Amplifier
  250. Nano vacuum tube

Content Relevant URLs by vBSEO 3.3.2