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. 8156's
  2. Can't get anything from my new pre-amp
  3. Bottlehead Paramount Question
  4. need help with ac/dc am/fm radio
  5. Peculiar oscillation
  6. ECC83 settings for Taylor 45C
  7. New Jolida 302b amp owner questions
  8. Help with gyrator
  9. Some basic questions...
  10. I have a hard one for you guys
  11. CCS pulsing oscillation problem
  12. tube testers: different gM standards for same tube?
  13. Frank's Pre Still In Vogue?
  14. Home made tube amps
  15. Source for SED "winged C" tubes?
  16. Preamp Help
  17. Push Pull Class A
  18. Multi-Ways Output Transformers
  19. Redplating anomaly?
  20. Marshall JCM900 2500 preamp
  21. Just for fun power poll!
  22. BIASING A JADIS ORCHESTRA
  23. Yaqin MC-50L
  24. CJ PV5 Upgrades?
  25. New Member - Magnavox Amps
  26. Double parafeed
  27. 6550 grid characteristic help please
  28. Newbie- Tube Testing RF Amp tube
  29. Urgent:Wrongly order 220V Power supply for 230V enviroment
  30. Mono sub-out from one trafo?
  31. Mu Follower to drive a Push-Pull Amplifier?
  32. The 6934A Triode Tube
  33. Constant current sink for 6SN7
  34. 6V6 high voltage
  35. VTL deluxe 100 monoblk (KT88) need help?
  36. Va,Ia exeed limiting values in datasheeds ?
  37. Old DIYtube ST-35 electrolytics - swap?
  38. What Hammond for UK?
  39. What would you build with this transformer set?
  40. EL86 / 6CW5 + 6BQ7A amp design
  41. Western Electric theater amplifiers; how to hook them up?
  42. 12AU7,12B4A PSE schematic needs finishing!
  43. Dual grid and plate pins
  44. Best sounding ECC83 ?
  45. tube output for Playstation 1
  46. 6GX8 as Audio Level Indicator?
  47. Wurlitzer 6150 Organ Tube Amp convert Guitar Amp
  48. help on 12AU7 Preamp circuit
  49. Anyone bought tubes from http://www.nostubestore.com/ ?
  50. Tube pre-amp with exposed tubes?
  51. Using low voltage lamp in power supply
  52. GU 50 monoblock
  53. KT-88 Push Pull with CFB
  54. 12AX7 + ?? Ideas 2A3 // 6L6
  55. Formula for driver current requirement ?
  56. Need a little help with a regulator circuit if you are willing.
  57. Troubleshooting help for 12AQ5 amp
  58. Can anyone help with an ef86 tape preamp mod please?
  59. Herald Amp
  60. To switch B+ or not?
  61. All-tube vs tube/mosfet hybrid ?
  62. 6c33c-b question
  63. 12AT7 substitutes?
  64. 1st project salvaged sears receiver iron need good amp schematic
  65. FM-3 ? About parts replacement in IF stages
  66. simple EL84 parallel?
  67. Finished: Claus Byrtih EL34 amplifier on Isophon BS35 speaker set
  68. Yet another resistor thread
  69. Bogen CHB100 Valve Question
  70. 1st build; Adding load to PT secondary
  71. need help RCA RS 199C
  72. Unusually high Gm
  73. RH84 motorboating, stereo vs mono
  74. Use a tube rectifier for grid bias voltage, AA5 Radio tubes and usage.
  75. Cathode bypass with Long tail pair
  76. new chinese tube manufacturer
  77. Black Gate WKZ - can they be used in these circuits?
  78. Yet another question about HV Maida Regs
  79. Question about vacuum tubes
  80. Scott 299D Calibration
  81. Score! Bag-O-tubes!
  82. Building a tube integrated amp
  83. Audio Note Kits L1 Build...
  84. Need help with old mic amp
  85. Temporary hum
  86. Unidentified Tube - One for the detectives!
  87. Rogues?
  88. What about big tube RV278 Telefunken?
  89. variac variable transformer
  90. Tube amp OPT for Headphone Amp? (impedance matching question)
  91. current needed for 4x50l6 & 3x6sn6
  92. 6N11 tube work at 24V power supply?
  93. Heater voltage 5volt!
  94. help me choose a high end opt for tubelabs SE!
  95. 6L6/807 AB2 triode-- screen drive?
  96. help troubleshooting
  97. Anode Follower Article
  98. ECC802S 12AU7 ECC82 heater question
  99. Books for amplifiers
  100. E180F Preamp
  101. Don Allen Amp's ????
  102. To connect or not to connect..........
  103. Phonostage with tube moving coil
  104. 300b tube Temperature?
  105. Center tap transformer for elevated heater supplies
  106. single ended kt88 fuse blowing after an hour
  107. Help getting more gain from a Peavey Butcher
  108. Radiotron question
  109. suggested use for old telefunken tubes
  110. Using different ouputs for two different drivers
  111. Pete Millett Uniamp with 300b
  112. Cary slp-70
  113. How to combine 2 signals from 2 gain stages
  114. Increase B+ supply
  115. Aikido Tetra Sans Phono PCB
  116. Loadlines and distortion (6S33S/6S41S)
  117. home theatre bypass feature
  118. Doubling the power of hifi tube amplifiers
  119. Can this tube be used in audio amplifier?
  120. 100 V OPT
  121. Help me understand tube chart data
  122. Listening preference....
  123. tube socket legs?
  124. Stand alone gain stage pre-amp
  125. I kinda sorta burned up my K12-G power transformer
  126. RCA-182 Tube Amp
  127. Transformer potting material? what material?
  128. Ultimate 6xEL34 PPP monoblocks? Hopefully with your help :)
  129. tube amp/pre in car?
  130. Thorsten's tube Stage for TDA1541A
  131. Please help me identify these .45 3kv TRW caps
  132. Convert Gates pre-amp to DC filament?
  133. any suggestions for a mid-amp transformer for a hybrid design... like this circuit...
  134. how much C is too much C?
  135. fisher 70AZ
  136. RE: My first attempt at using Tube Cadd
  137. Srpp simple explanation
  138. Driver for a 807 em triode mode...help !!!
  139. 6J6-based SSMH?
  140. Small tube amp based on 6N6P
  141. replacement for Ei 12BH7AEG
  142. Preamp input tube noise
  143. How much is too much for a 6L6GB?
  144. What is the proper way to measure transformer inductance?
  145. Audio Research LS8 mod. to MKII
  146. Futterman stage max input
  147. How important is ESR in PS Caps?
  148. Pushing 6p14p too hard
  149. Who can tell me in Rome where can i buy antique Vacuum tube?
  150. Is the YAQIN MS-12B (220v +-10%) safe to use in UK
  151. Priboi biasing
  152. Whither Westrex ?.
  153. Tube Phono Pre-Amplifiers
  154. Pioneer SA400 -- Headphones hum, speakers don't. Why?
  155. DIY tube amps for surround sounds?
  156. Bad solder joints in Fender Deluxe VM
  157. Rotary switch for attenuator
  158. What is Matise circuit?
  159. 6bq5 red plating
  160. Technical questions about Melos MA-333
  161. What's this in old Fender amps?
  162. idiot proof mono push pull 6l6gc schematic wanted
  163. Passive Preamp Mod help
  164. KT77 OPT impedance
  165. i think i'm thru with 2A3 tubes
  166. VTC4U? Is that the name of the tube tower/shroud seller?
  167. 8417 triode el.. Mod??'s
  168. Gramp's Zenith MLT 15
  169. Class A tube amplifier Kit
  170. IERC tube coolers for EL34 on the Bay
  171. Stromberg Carlson ASR 433
  172. quads11&22 back into service
  173. New Tubes for sale
  174. Best design for Lundahl LL1679/PP
  175. 12U7 LTP vs. 6922 cascode
  176. Need help calculating value of balancing resistors
  177. 12ax7 12au7 preamp
  178. Western Electric 471A...any information ?
  179. Please Reply
  180. tube line preamplifier circuit
  181. 6L6 Ultralinear cathode Follower
  182. Grid current operation
  183. 431 based screen supply
  184. Where did all the money go?
  185. Hyperx soft start any good for valve amp situation?
  186. Class AB2, Class B, and Hifi
  187. PP 6b4g bad / distorted channel diagnostics
  188. Transformer usage ??
  189. Phono Amplifier
  190. Need EL84 Brand Identification
  191. RCA Octagon dating
  192. Most Accurate Bias Testing Method
  193. ASL AQ1003DT schematic or manual?
  194. Penta brand 6L6GC info?
  195. Mod to SE 6SN7 - 6V6 amp
  196. adjust filament ECC82/83
  197. Clear out of old valves - advice needed
  198. Help ID this OPT
  199. Help? 6n23p cathode follower
  200. DC Heater Caps
  201. Load Line and Biasing for Class AB 6550 power amp
  202. Amp project help needed
  203. LTP with CCS and feedback
  204. Clarion simple 2A3 amplifier
  205. Another question about plate curves and pentode load lines
  206. 5V Indrect Heated Rectifiers?
  207. Easy CCS
  208. I just setup my mimiwat n3 with a pair of Energy cb-20 speakers
  209. First watt F2/little dot MK III
  210. Old Motorola console tube amp, fuse problem
  211. How much performance difference w/ this config?
  212. 6P8S datasheet, help !!
  213. DHT IMD
  214. How to calculate OPT transformer windings
  215. Newbie Questions
  216. Building a Harmonic Distortion Generator
  217. plate curves and max ratings questions
  218. Heater-cathode DC conduction resistance
  219. EL 84 Capacitor Equivalent
  220. How do they get away with this?
  221. well-loved Sherwood "popping" prob mouse pee
  222. Tube Newb: 12sn7 and 12sl7 interchangeable?
  223. Totem-Pole OTL with 6c33c tubes and 0.079 % THD at 20 Watt
  224. sonic frontiers sfm-75
  225. Chinese tube amp mods?
  226. PSU for JE Labs Simple 45/2A3
  227. frustrated ,Bought a 845 NOS - springs are discconnected need help
  228. Running water sound in amp
  229. Peerless 16458 output transformers
  230. Noisy high-gain preamplifier
  231. Cheap ($235) SE Tube amp kit, transformer and chassis on ebay
  232. 2A3 single plate RCA/Cunningham tube prices
  233. output transformer power rating
  234. Rectifier Foward Voltage?
  235. Help With 6Y6 amp
  236. What are 12AT7/ECC81 power drivers ?
  237. Help with these Russian GU50 tube amplifier
  238. Eico ST-70 Supermods
  239. Mullard PZ30, how's its Peak Inverse Voltage?
  240. Optical compressor project
  241. 12AU7 in cascode configuration
  242. Bad tube in old record player?
  243. check this out glas-fiber cartridge
  244. cathode caps
  245. Aikido HV PSU
  246. Distance between 6N23P and a cap?
  247. solid and strand wire in amp
  248. Phillips Music Sudio
  249. LTPI Grid stopper value affect on harmonics
  250. WTF. What's going on here.

Content Relevant URLs by vBSEO 3.3.2