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

  1. Radford STA100 improvements?
  2. Playmaster unit 2 help needed!
  3. help me build an output transformer
  4. Vintage Magnavox tube amp
  5. Christmas Build, advice needed.
  6. Speaker suggestions for ST-70
  7. Tube markings?
  8. gaumont-kalee
  9. amplifiers audio research D90
  10. 40W Glass A 300B tube schematic needed.
  11. Hum in one channel only
  12. Water cooling Power Tubes
  13. Toroid Output Transformer from Plitron
  14. Scott LK-30 Assembly Manual Needed
  15. HUM STARTS 1 OR 2 HOUR AFTER THE AMP IS ON
  16. The best valve amp!
  17. Equivalents for 12AT7 and 6N11 ? (Sense G3 headphone amp)
  18. More probably stupid questions about feedback
  19. single stage amp?
  20. SS 83 again
  21. Making Spice Models for tubes
  22. Seth mk 2 ???
  23. Colorful inspiration
  24. Testing KT-90's Ei NIs Yugoslavia
  25. El Cheapo Transformer Question
  26. Why does the grid extend so far beyond the anode ?
  27. Valve amplifier identification
  28. E-M-field problem
  29. Effective cathode resistance
  30. Spectrum evaluation ECC82
  31. power d90-b
  32. el34, kt88, kt90, 6550 to 8417 conversion
  33. Do you know these capacitors?
  34. Vintage Capacitor Identification??
  35. GRAAF GAAFiti WFB ONE - Schematic needed
  36. Oscillation WE417A
  37. EL84 fixed fixed bias
  38. Blown stereo
  39. 807/6au6 pure pentode mode amplifier
  40. help with ID'ing a tube
  41. Magnavox 50EH5 Stereo Amp
  42. My new Circlotron OTL tube power Amp.
  43. ideas for a tube eating guitair amp
  44. 6DE4, unused pins
  45. 300B what output transformer Sowter or Lundahl?
  46. 6DJ8 preamp w/balanced input - strange schematic
  47. Screen Grid Regulation Requirements
  48. Advice needed on new 6L6 ro 6V6 SE or SET build
  49. need a little help with an HK solo2 tube receiver
  50. Help me to build Vacuum Tube Amp.
  51. amp with SRPP output stage? post if you know one
  52. Output transformer question
  53. EF86 Phono pre-amp or Mcintosh MC2200?
  54. Transcendar is Branching Out
  55. can SE driven PP be clean enough to sound SE ?
  56. k12-m amp not working
  57. 813 amp and old choke
  58. Several hundred tubes found! What to do!
  59. Possible to convert Audiorom Fu29 to Single end?
  60. Measuring bias
  61. ecc802s SRPP preamplifier
  62. HELP! Capacitor specs for Sonic Frontiers SFC-1 Control Amplifier
  63. Class A KT88 info
  64. What is screen tap of transformer?
  65. Brightest heaters in tubes?
  66. 40% tap or not
  67. 6dj8 phono schematic needed
  68. EL34 Parts..
  69. solid state driven p-p ultralinear
  70. linestage w/separate PSU: where to "split" ?
  71. Anybody know this TELEFUNKEN SE transformer?
  72. Too much feedback?
  73. Tube Power Supply Dummy Load
  74. For 6c33 Fans. A new schematic
  75. WAD phono 3 motorboating with Raphaelite 300b
  76. Help! Tube Tester in Austin or Lago Vista?
  77. Vintage Stromberg Carlson
  78. GM70 and Other LTSpice Tube Models
  79. Please help me understand this feedback
  80. Affordable Valve Company - Re-bias
  81. The effect of different value coupling capacitors?
  82. Closed loop stability help needed.
  83. EAR 509 OPT Impedances
  84. Installing Hammond 1609s in K12-G
  85. 6088 Amplifier
  86. Valve Art kt88 not the same ring getter?
  87. 5mA DC transformer - tube output stage?
  88. Mini amp questions
  89. What mean those russian electronic units ?
  90. Coupling capacitors
  91. Monsters thread (high power tube amps)
  92. CCS on LTP please help
  93. Best type of pre-amp for valve/tube power amp
  94. 12au7 made by Toshiba, Hitachi, Matsushita, RSD, International and Miniwatt?
  95. Load lines
  96. Cold cathode tubes
  97. Redundant CNC stainless steel enclosures
  98. First try P-P 6S41S design
  99. Help!!! I need to get valve TAW12/20B / TRIODE for use as HF amplifier and oscillator
  100. Velleman K4040 Stereo Vacuum Tube Amplifier Volume Control
  101. 12AT7 Regulated Power Supply
  102. 2A3 to 45 Cathode Wattage?
  103. Cheap Chinese Ebay Amps
  104. Audion Sterling Integrated Amp Version - Stereo MK-I - Extended Live Time wanted
  105. Transformer Center Taps
  106. Output transformer for 18watt
  107. PTX temps
  108. Can A valve amplifier be both Class A and Class B?
  109. got a problem with my scope, need some advice
  110. DC coupled cathode follower driving me nuts
  111. Vacuum state gone?
  112. 1634 dual triode
  113. Aikido line amp
  114. Winding an ISO TX with pair of inductors
  115. Quad II Switch Mode PSU
  116. What do do with all of these?
  117. global negative feedback in el84 push pull
  118. Old HP transformer - what is it?
  119. FET Phase inverter to drive valve PA
  120. Core Audio 6BC4 buffer problem
  121. JCM Build - Voltage problem!
  122. Power Amplifiers & Gain
  123. Power tube maximum current draw from a power supply
  124. Tube Matching in a Power Amp?
  125. SE stereo / PP mono block schematic choices
  126. How to measure output transformer?
  127. Peavey VTM 60 vs Orange Tiny Terror
  128. Shoddy Packaging
  129. Schematic needed for Manley SnapperŪ from Manley Labs
  130. Resistor, capacitor across output transformer AKAI M-7
  131. eBay&etc cheap tube buffers/preamp .. anything good?
  132. 6N3 Preamp Question
  133. OK guys...be gentle
  134. 6SN7 and DN2540's
  135. 10k and 6k primary windings on OPT. Use for UL?
  136. Settings for PL509, EZ80 tubes on 539c tester
  137. replacing 6LGC with 6550 or KT88
  138. ECC83 input circuitry
  139. Dynaco MK III modifications
  140. SMPS for heaters
  141. Headphone tube-amp with oddball OPT
  142. Neon Lamp Question
  143. Curious old tubes from tandy
  144. 828 Triode Curves?
  145. 813 review
  146. tube circlotron for headphone amplifier
  147. valve headphone pre-amp
  148. Shengyi 6AQ5
  149. Burn in small signal tubes?
  150. 24V powered 6N11 amplifier, 0.25% distortion, pretty good!
  151. SS diode replacements
  152. Bass guitar amp using 832a/GU32 tubes
  153. can you check if everything is ok with el84 schematic please
  154. Advice on this amp schematic please
  155. 8156's
  156. Can't get anything from my new pre-amp
  157. Bottlehead Paramount Question
  158. need help with ac/dc am/fm radio
  159. Peculiar oscillation
  160. ECC83 settings for Taylor 45C
  161. New Jolida 302b amp owner questions
  162. Help with gyrator
  163. Some basic questions...
  164. I have a hard one for you guys
  165. CCS pulsing oscillation problem
  166. tube testers: different gM standards for same tube?
  167. Frank's Pre Still In Vogue?
  168. Home made tube amps
  169. Source for SED "winged C" tubes?
  170. Preamp Help
  171. Push Pull Class A
  172. Multi-Ways Output Transformers
  173. Redplating anomaly?
  174. Marshall JCM900 2500 preamp
  175. Just for fun power poll!
  176. BIASING A JADIS ORCHESTRA
  177. Yaqin MC-50L
  178. CJ PV5 Upgrades?
  179. New Member - Magnavox Amps
  180. Double parafeed
  181. 6550 grid characteristic help please
  182. Newbie- Tube Testing RF Amp tube
  183. Urgent:Wrongly order 220V Power supply for 230V enviroment
  184. Mono sub-out from one trafo?
  185. Mu Follower to drive a Push-Pull Amplifier?
  186. The 6934A Triode Tube
  187. Constant current sink for 6SN7
  188. 6V6 high voltage
  189. VTL deluxe 100 monoblk (KT88) need help?
  190. Va,Ia exeed limiting values in datasheeds ?
  191. Old DIYtube ST-35 electrolytics - swap?
  192. What Hammond for UK?
  193. What would you build with this transformer set?
  194. EL86 / 6CW5 + 6BQ7A amp design
  195. Western Electric theater amplifiers; how to hook them up?
  196. 12AU7,12B4A PSE schematic needs finishing!
  197. Dual grid and plate pins
  198. Best sounding ECC83 ?
  199. tube output for Playstation 1
  200. 6GX8 as Audio Level Indicator?
  201. Wurlitzer 6150 Organ Tube Amp convert Guitar Amp
  202. help on 12AU7 Preamp circuit
  203. Anyone bought tubes from http://www.nostubestore.com/ ?
  204. Tube pre-amp with exposed tubes?
  205. Using low voltage lamp in power supply
  206. GU 50 monoblock
  207. KT-88 Push Pull with CFB
  208. 12AX7 + ?? Ideas 2A3 // 6L6
  209. Formula for driver current requirement ?
  210. Need a little help with a regulator circuit if you are willing.
  211. Troubleshooting help for 12AQ5 amp
  212. Can anyone help with an ef86 tape preamp mod please?
  213. Herald Amp
  214. To switch B+ or not?
  215. All-tube vs tube/mosfet hybrid ?
  216. 6c33c-b question
  217. 12AT7 substitutes?
  218. 1st project salvaged sears receiver iron need good amp schematic
  219. FM-3 ? About parts replacement in IF stages
  220. simple EL84 parallel?
  221. Finished: Claus Byrtih EL34 amplifier on Isophon BS35 speaker set
  222. Yet another resistor thread
  223. Bogen CHB100 Valve Question
  224. 1st build; Adding load to PT secondary
  225. need help RCA RS 199C
  226. Unusually high Gm
  227. RH84 motorboating, stereo vs mono
  228. Use a tube rectifier for grid bias voltage, AA5 Radio tubes and usage.
  229. Cathode bypass with Long tail pair
  230. new chinese tube manufacturer
  231. Black Gate WKZ - can they be used in these circuits?
  232. Yet another question about HV Maida Regs
  233. Question about vacuum tubes
  234. Scott 299D Calibration
  235. Score! Bag-O-tubes!
  236. Building a tube integrated amp
  237. Audio Note Kits L1 Build...
  238. Need help with old mic amp
  239. Temporary hum
  240. Unidentified Tube - One for the detectives!
  241. Rogues?
  242. What about big tube RV278 Telefunken?
  243. variac variable transformer
  244. Tube amp OPT for Headphone Amp? (impedance matching question)
  245. current needed for 4x50l6 & 3x6sn6
  246. 6N11 tube work at 24V power supply?
  247. Heater voltage 5volt!
  248. help me choose a high end opt for tubelabs SE!
  249. 6L6/807 AB2 triode-- screen drive?
  250. help troubleshooting

Content Relevant URLs by vBSEO 3.3.2