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

  1. Velleman K4040 Stereo Vacuum Tube Amplifier Volume Control
  2. 12AT7 Regulated Power Supply
  3. 2A3 to 45 Cathode Wattage?
  4. Cheap Chinese Ebay Amps
  5. Audion Sterling Integrated Amp Version - Stereo MK-I - Extended Live Time wanted
  6. Transformer Center Taps
  7. Output transformer for 18watt
  8. PTX temps
  9. Can A valve amplifier be both Class A and Class B?
  10. got a problem with my scope, need some advice
  11. DC coupled cathode follower driving me nuts
  12. Vacuum state gone?
  13. 1634 dual triode
  14. Aikido line amp
  15. Winding an ISO TX with pair of inductors
  16. Quad II Switch Mode PSU
  17. What do do with all of these?
  18. global negative feedback in el84 push pull
  19. Old HP transformer - what is it?
  20. FET Phase inverter to drive valve PA
  21. Core Audio 6BC4 buffer problem
  22. JCM Build - Voltage problem!
  23. Power Amplifiers & Gain
  24. Power tube maximum current draw from a power supply
  25. Tube Matching in a Power Amp?
  26. SE stereo / PP mono block schematic choices
  27. How to measure output transformer?
  28. Peavey VTM 60 vs Orange Tiny Terror
  29. Shoddy Packaging
  30. Schematic needed for Manley SnapperŪ from Manley Labs
  31. Resistor, capacitor across output transformer AKAI M-7
  32. eBay&etc cheap tube buffers/preamp .. anything good?
  33. 6N3 Preamp Question
  34. OK guys...be gentle
  35. 6SN7 and DN2540's
  36. 10k and 6k primary windings on OPT. Use for UL?
  37. Settings for PL509, EZ80 tubes on 539c tester
  38. replacing 6LGC with 6550 or KT88
  39. ECC83 input circuitry
  40. Dynaco MK III modifications
  41. SMPS for heaters
  42. Headphone tube-amp with oddball OPT
  43. Neon Lamp Question
  44. Curious old tubes from tandy
  45. 828 Triode Curves?
  46. 813 review
  47. tube circlotron for headphone amplifier
  48. valve headphone pre-amp
  49. Shengyi 6AQ5
  50. Burn in small signal tubes?
  51. 24V powered 6N11 amplifier, 0.25% distortion, pretty good!
  52. SS diode replacements
  53. Bass guitar amp using 832a/GU32 tubes
  54. can you check if everything is ok with el84 schematic please
  55. Advice on this amp schematic please
  56. 8156's
  57. Can't get anything from my new pre-amp
  58. Bottlehead Paramount Question
  59. need help with ac/dc am/fm radio
  60. Peculiar oscillation
  61. ECC83 settings for Taylor 45C
  62. New Jolida 302b amp owner questions
  63. Help with gyrator
  64. Some basic questions...
  65. I have a hard one for you guys
  66. CCS pulsing oscillation problem
  67. tube testers: different gM standards for same tube?
  68. Frank's Pre Still In Vogue?
  69. Home made tube amps
  70. Source for SED "winged C" tubes?
  71. Preamp Help
  72. Push Pull Class A
  73. Multi-Ways Output Transformers
  74. Redplating anomaly?
  75. Marshall JCM900 2500 preamp
  76. Just for fun power poll!
  77. BIASING A JADIS ORCHESTRA
  78. Yaqin MC-50L
  79. CJ PV5 Upgrades?
  80. New Member - Magnavox Amps
  81. Double parafeed
  82. 6550 grid characteristic help please
  83. Newbie- Tube Testing RF Amp tube
  84. Urgent:Wrongly order 220V Power supply for 230V enviroment
  85. Mono sub-out from one trafo?
  86. Mu Follower to drive a Push-Pull Amplifier?
  87. The 6934A Triode Tube
  88. Constant current sink for 6SN7
  89. 6V6 high voltage
  90. VTL deluxe 100 monoblk (KT88) need help?
  91. Va,Ia exeed limiting values in datasheeds ?
  92. Old DIYtube ST-35 electrolytics - swap?
  93. What Hammond for UK?
  94. What would you build with this transformer set?
  95. EL86 / 6CW5 + 6BQ7A amp design
  96. Western Electric theater amplifiers; how to hook them up?
  97. 12AU7,12B4A PSE schematic needs finishing!
  98. Dual grid and plate pins
  99. Best sounding ECC83 ?
  100. tube output for Playstation 1
  101. 6GX8 as Audio Level Indicator?
  102. Wurlitzer 6150 Organ Tube Amp convert Guitar Amp
  103. help on 12AU7 Preamp circuit
  104. Anyone bought tubes from http://www.nostubestore.com/ ?
  105. Tube pre-amp with exposed tubes?
  106. Using low voltage lamp in power supply
  107. GU 50 monoblock
  108. KT-88 Push Pull with CFB
  109. 12AX7 + ?? Ideas 2A3 // 6L6
  110. Formula for driver current requirement ?
  111. Need a little help with a regulator circuit if you are willing.
  112. Troubleshooting help for 12AQ5 amp
  113. Can anyone help with an ef86 tape preamp mod please?
  114. Herald Amp
  115. To switch B+ or not?
  116. All-tube vs tube/mosfet hybrid ?
  117. 6c33c-b question
  118. 12AT7 substitutes?
  119. 1st project salvaged sears receiver iron need good amp schematic
  120. FM-3 ? About parts replacement in IF stages
  121. simple EL84 parallel?
  122. Finished: Claus Byrtih EL34 amplifier on Isophon BS35 speaker set
  123. Yet another resistor thread
  124. Bogen CHB100 Valve Question
  125. 1st build; Adding load to PT secondary
  126. need help RCA RS 199C
  127. Unusually high Gm
  128. RH84 motorboating, stereo vs mono
  129. Use a tube rectifier for grid bias voltage, AA5 Radio tubes and usage.
  130. Cathode bypass with Long tail pair
  131. new chinese tube manufacturer
  132. Black Gate WKZ - can they be used in these circuits?
  133. Yet another question about HV Maida Regs
  134. Question about vacuum tubes
  135. Scott 299D Calibration
  136. Score! Bag-O-tubes!
  137. Building a tube integrated amp
  138. Audio Note Kits L1 Build...
  139. Need help with old mic amp
  140. Temporary hum
  141. Unidentified Tube - One for the detectives!
  142. Rogues?
  143. What about big tube RV278 Telefunken?
  144. variac variable transformer
  145. Tube amp OPT for Headphone Amp? (impedance matching question)
  146. current needed for 4x50l6 & 3x6sn6
  147. 6N11 tube work at 24V power supply?
  148. Heater voltage 5volt!
  149. help me choose a high end opt for tubelabs SE!
  150. 6L6/807 AB2 triode-- screen drive?
  151. help troubleshooting
  152. Anode Follower Article
  153. ECC802S 12AU7 ECC82 heater question
  154. Books for amplifiers
  155. E180F Preamp
  156. Don Allen Amp's ????
  157. To connect or not to connect..........
  158. Phonostage with tube moving coil
  159. 300b tube Temperature?
  160. Center tap transformer for elevated heater supplies
  161. single ended kt88 fuse blowing after an hour
  162. Help getting more gain from a Peavey Butcher
  163. Radiotron question
  164. suggested use for old telefunken tubes
  165. Using different ouputs for two different drivers
  166. Pete Millett Uniamp with 300b
  167. Cary slp-70
  168. How to combine 2 signals from 2 gain stages
  169. Increase B+ supply
  170. Aikido Tetra Sans Phono PCB
  171. Loadlines and distortion (6S33S/6S41S)
  172. home theatre bypass feature
  173. Doubling the power of hifi tube amplifiers
  174. Can this tube be used in audio amplifier?
  175. 100 V OPT
  176. Help me understand tube chart data
  177. Listening preference....
  178. tube socket legs?
  179. Stand alone gain stage pre-amp
  180. I kinda sorta burned up my K12-G power transformer
  181. RCA-182 Tube Amp
  182. Transformer potting material? what material?
  183. Ultimate 6xEL34 PPP monoblocks? Hopefully with your help :)
  184. tube amp/pre in car?
  185. Thorsten's tube Stage for TDA1541A
  186. Please help me identify these .45 3kv TRW caps
  187. Convert Gates pre-amp to DC filament?
  188. any suggestions for a mid-amp transformer for a hybrid design... like this circuit...
  189. how much C is too much C?
  190. fisher 70AZ
  191. RE: My first attempt at using Tube Cadd
  192. Srpp simple explanation
  193. Driver for a 807 em triode mode...help !!!
  194. 6J6-based SSMH?
  195. Small tube amp based on 6N6P
  196. replacement for Ei 12BH7AEG
  197. Preamp input tube noise
  198. How much is too much for a 6L6GB?
  199. What is the proper way to measure transformer inductance?
  200. Audio Research LS8 mod. to MKII
  201. Futterman stage max input
  202. How important is ESR in PS Caps?
  203. Pushing 6p14p too hard
  204. Who can tell me in Rome where can i buy antique Vacuum tube?
  205. Is the YAQIN MS-12B (220v +-10%) safe to use in UK
  206. Priboi biasing
  207. Whither Westrex ?.
  208. Tube Phono Pre-Amplifiers
  209. Pioneer SA400 -- Headphones hum, speakers don't. Why?
  210. DIY tube amps for surround sounds?
  211. Bad solder joints in Fender Deluxe VM
  212. Rotary switch for attenuator
  213. What is Matise circuit?
  214. 6bq5 red plating
  215. Technical questions about Melos MA-333
  216. What's this in old Fender amps?
  217. idiot proof mono push pull 6l6gc schematic wanted
  218. Passive Preamp Mod help
  219. KT77 OPT impedance
  220. i think i'm thru with 2A3 tubes
  221. VTC4U? Is that the name of the tube tower/shroud seller?
  222. 8417 triode el.. Mod??'s
  223. Gramp's Zenith MLT 15
  224. Class A tube amplifier Kit
  225. IERC tube coolers for EL34 on the Bay
  226. Stromberg Carlson ASR 433
  227. quads11&22 back into service
  228. New Tubes for sale
  229. Best design for Lundahl LL1679/PP
  230. 12U7 LTP vs. 6922 cascode
  231. Need help calculating value of balancing resistors
  232. 12ax7 12au7 preamp
  233. Western Electric 471A...any information ?
  234. Please Reply
  235. tube line preamplifier circuit
  236. 6L6 Ultralinear cathode Follower
  237. Grid current operation
  238. 431 based screen supply
  239. Where did all the money go?
  240. Hyperx soft start any good for valve amp situation?
  241. Class AB2, Class B, and Hifi
  242. PP 6b4g bad / distorted channel diagnostics
  243. Transformer usage ??
  244. Phono Amplifier
  245. Need EL84 Brand Identification
  246. RCA Octagon dating
  247. Most Accurate Bias Testing Method
  248. ASL AQ1003DT schematic or manual?
  249. Penta brand 6L6GC info?
  250. Mod to SE 6SN7 - 6V6 amp

Content Relevant URLs by vBSEO 3.3.2