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. Uneven Plate Glow
  2. Parafeed transformer sounds thin
  3. Lightbulbs as ccs
  4. My AWESOME First DIY amp
  5. Cary audio design SLI 80
  6. A1538 OPT?
  7. Genalex A2900 Keep or Sell?
  8. 6CB6 Spice Model wanted
  9. XFMR Help?
  10. 12 volt to 300 volt inverter question for tubes
  11. These amps should be verboten!
  12. how to use PCL86 instead of ecl86
  13. PSU for Aikido (4x 12SN7)
  14. SCA35 and AU-70
  15. Analisys of power amp limitations of tube bias range
  16. DIY Phono Preamp ??
  17. NOS 211 RCA or National Union?
  18. Iron Powder + Resin Output Transformer
  19. The Radio Hat Challenge
  20. EU regulations
  21. Transconductance for kt-90 in plain english
  22. Craftsmen RC-2
  23. Valve Amplification Company V100
  24. Parallel feed transformer with SRPP
  25. It's heeeeeere!- Valve Amplifiers 4th Edition
  26. opera consonance phonostage-PM1
  27. Anybody Explain this Preamp shematic?
  28. The high-voltage collection
  29. Input transformer topology question
  30. JE Labs 300Bdx stereo - troubleshooting
  31. battery operated 12/24/48 Volt multiple tube OTL
  32. Bringing up long-stored tube gear
  33. About RH84 three channel?
  34. MCC with Fisher
  35. Directly heated cathodes
  36. Build recommendation
  37. Ortofon KS 591 - informations
  38. Oatley K295-extra space for tubes
  39. A beginner's tube amp to drive a pair of fostex Fe103e
  40. Tame the beast.
  41. KT88 and Hammond Transformer
  42. B+ Drifts down after 2 hours
  43. Power amp sputters on turnoff
  44. Yet another EQP-1A
  45. How to bias 6SL7?
  46. 6CG7/6FQ7 = 6N5P (6Н5П)
  47. #27 mu stage
  48. Compactron Regulated Power Supply
  49. Best sounding voltage amplifier for hybride.
  50. PX25 to 300B pins
  51. de-gassing power tubes???
  52. Heathkit 51-29 output transformers issure
  53. 6AS7 Model
  54. 26H choke good enough for a grid or anode choke?
  55. Russian 6R2P for small amp.
  56. Power transformer primary is open.
  57. Rectifier oddness
  58. First Tube Build, Thoughts?
  59. Output Transformers
  60. Lazy Sunday 6SN7 Preamp
  61. Audio research VT200 Biasing & Schematic
  62. finished my new preamplifier!!
  63. What would be the correct output cap for this OTL Headphone Amp?
  64. Full Bridge Rectifier With Tubes
  65. Looking for data sheet for GE JAN 6146W/7212
  66. Best Valve pre-amp match for ME 550 amp
  67. Fisher 500c
  68. From old Philips tube books , just for tube audio DIY friends !
  69. UFO
  70. Adding a preamp?
  71. XS-225 valve amp circuit.
  72. LS7/CV1660 curves
  73. Differences between 12V6 tube and 12A6 tube?
  74. Please check my schematic
  75. 12W Push pull w/6C4C
  76. Tube Date Code
  77. For new members....
  78. Graphite ring on sweep tubes
  79. 6N6P tube - focus on
  80. Vox Guitar Amp Created a Revolution
  81. Hot tube preamp pedal build
  82. Counterpoint Electronics/Counterpoint Acoustics/Counterpoint Audio
  83. Radford STA100 improvements?
  84. Playmaster unit 2 help needed!
  85. help me build an output transformer
  86. Vintage Magnavox tube amp
  87. Christmas Build, advice needed.
  88. Speaker suggestions for ST-70
  89. Tube markings?
  90. gaumont-kalee
  91. amplifiers audio research D90
  92. 40W Glass A 300B tube schematic needed.
  93. Hum in one channel only
  94. Water cooling Power Tubes
  95. Toroid Output Transformer from Plitron
  96. Scott LK-30 Assembly Manual Needed
  97. HUM STARTS 1 OR 2 HOUR AFTER THE AMP IS ON
  98. The best valve amp!
  99. Equivalents for 12AT7 and 6N11 ? (Sense G3 headphone amp)
  100. More probably stupid questions about feedback
  101. single stage amp?
  102. SS 83 again
  103. Making Spice Models for tubes
  104. Seth mk 2 ???
  105. Colorful inspiration
  106. Testing KT-90's Ei NIs Yugoslavia
  107. El Cheapo Transformer Question
  108. Why does the grid extend so far beyond the anode ?
  109. Valve amplifier identification
  110. E-M-field problem
  111. Effective cathode resistance
  112. Spectrum evaluation ECC82
  113. power d90-b
  114. el34, kt88, kt90, 6550 to 8417 conversion
  115. Do you know these capacitors?
  116. Vintage Capacitor Identification??
  117. GRAAF GAAFiti WFB ONE - Schematic needed
  118. Oscillation WE417A
  119. EL84 fixed fixed bias
  120. Blown stereo
  121. 807/6au6 pure pentode mode amplifier
  122. help with ID'ing a tube
  123. Magnavox 50EH5 Stereo Amp
  124. My new Circlotron OTL tube power Amp.
  125. ideas for a tube eating guitair amp
  126. 6DE4, unused pins
  127. 300B what output transformer Sowter or Lundahl?
  128. 6DJ8 preamp w/balanced input - strange schematic
  129. Screen Grid Regulation Requirements
  130. Advice needed on new 6L6 ro 6V6 SE or SET build
  131. need a little help with an HK solo2 tube receiver
  132. Help me to build Vacuum Tube Amp.
  133. amp with SRPP output stage? post if you know one
  134. Output transformer question
  135. EF86 Phono pre-amp or Mcintosh MC2200?
  136. Transcendar is Branching Out
  137. can SE driven PP be clean enough to sound SE ?
  138. k12-m amp not working
  139. 813 amp and old choke
  140. Several hundred tubes found! What to do!
  141. Possible to convert Audiorom Fu29 to Single end?
  142. Measuring bias
  143. ecc802s SRPP preamplifier
  144. HELP! Capacitor specs for Sonic Frontiers SFC-1 Control Amplifier
  145. Class A KT88 info
  146. What is screen tap of transformer?
  147. Brightest heaters in tubes?
  148. 40% tap or not
  149. 6dj8 phono schematic needed
  150. EL34 Parts..
  151. solid state driven p-p ultralinear
  152. linestage w/separate PSU: where to "split" ?
  153. Anybody know this TELEFUNKEN SE transformer?
  154. Too much feedback?
  155. Tube Power Supply Dummy Load
  156. For 6c33 Fans. A new schematic
  157. WAD phono 3 motorboating with Raphaelite 300b
  158. Help! Tube Tester in Austin or Lago Vista?
  159. Vintage Stromberg Carlson
  160. GM70 and Other LTSpice Tube Models
  161. Please help me understand this feedback
  162. Affordable Valve Company - Re-bias
  163. The effect of different value coupling capacitors?
  164. Closed loop stability help needed.
  165. EAR 509 OPT Impedances
  166. Installing Hammond 1609s in K12-G
  167. 6088 Amplifier
  168. Valve Art kt88 not the same ring getter?
  169. 5mA DC transformer - tube output stage?
  170. Mini amp questions
  171. What mean those russian electronic units ?
  172. Coupling capacitors
  173. Monsters thread (high power tube amps)
  174. CCS on LTP please help
  175. Best type of pre-amp for valve/tube power amp
  176. 12au7 made by Toshiba, Hitachi, Matsushita, RSD, International and Miniwatt?
  177. Load lines
  178. Cold cathode tubes
  179. Redundant CNC stainless steel enclosures
  180. First try P-P 6S41S design
  181. Help!!! I need to get valve TAW12/20B / TRIODE for use as HF amplifier and oscillator
  182. Velleman K4040 Stereo Vacuum Tube Amplifier Volume Control
  183. 12AT7 Regulated Power Supply
  184. 2A3 to 45 Cathode Wattage?
  185. Cheap Chinese Ebay Amps
  186. Audion Sterling Integrated Amp Version - Stereo MK-I - Extended Live Time wanted
  187. Transformer Center Taps
  188. Output transformer for 18watt
  189. PTX temps
  190. Can A valve amplifier be both Class A and Class B?
  191. got a problem with my scope, need some advice
  192. DC coupled cathode follower driving me nuts
  193. Vacuum state gone?
  194. 1634 dual triode
  195. Aikido line amp
  196. Winding an ISO TX with pair of inductors
  197. Quad II Switch Mode PSU
  198. What do do with all of these?
  199. global negative feedback in el84 push pull
  200. Old HP transformer - what is it?
  201. FET Phase inverter to drive valve PA
  202. Core Audio 6BC4 buffer problem
  203. JCM Build - Voltage problem!
  204. Power Amplifiers & Gain
  205. Power tube maximum current draw from a power supply
  206. Tube Matching in a Power Amp?
  207. SE stereo / PP mono block schematic choices
  208. How to measure output transformer?
  209. Peavey VTM 60 vs Orange Tiny Terror
  210. Shoddy Packaging
  211. Schematic needed for Manley SnapperŪ from Manley Labs
  212. Resistor, capacitor across output transformer AKAI M-7
  213. eBay&etc cheap tube buffers/preamp .. anything good?
  214. 6N3 Preamp Question
  215. OK guys...be gentle
  216. 6SN7 and DN2540's
  217. 10k and 6k primary windings on OPT. Use for UL?
  218. Settings for PL509, EZ80 tubes on 539c tester
  219. replacing 6LGC with 6550 or KT88
  220. ECC83 input circuitry
  221. Dynaco MK III modifications
  222. SMPS for heaters
  223. Headphone tube-amp with oddball OPT
  224. Neon Lamp Question
  225. Curious old tubes from tandy
  226. 828 Triode Curves?
  227. 813 review
  228. tube circlotron for headphone amplifier
  229. valve headphone pre-amp
  230. Shengyi 6AQ5
  231. Burn in small signal tubes?
  232. 24V powered 6N11 amplifier, 0.25% distortion, pretty good!
  233. SS diode replacements
  234. Bass guitar amp using 832a/GU32 tubes
  235. can you check if everything is ok with el84 schematic please
  236. Advice on this amp schematic please
  237. 8156's
  238. Can't get anything from my new pre-amp
  239. Bottlehead Paramount Question
  240. need help with ac/dc am/fm radio
  241. Peculiar oscillation
  242. ECC83 settings for Taylor 45C
  243. New Jolida 302b amp owner questions
  244. Help with gyrator
  245. Some basic questions...
  246. I have a hard one for you guys
  247. CCS pulsing oscillation problem
  248. tube testers: different gM standards for same tube?
  249. Frank's Pre Still In Vogue?
  250. Home made tube amps

Content Relevant URLs by vBSEO 3.3.2