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 99 100 101 102 103

  1. Edcor's new E-store website.....finally!
  2. Help complete the 300B schematic
  3. Confusion about a 5Y3GT rectifier
  4. Need advice on 300B circuit
  5. PCB in components
  6. new 6080 dc pp
  7. Single ended to balanced Aikido with mosfets in buffer position
  8. about 83 mercury rectifier
  9. Aikido Zo Calculation
  10. Pavane/ Psvane 845, 805, 211, 12AX7, 12AU7, 12AT7 and EL84
  11. Is this Telefunken fake or OEM?
  12. About Hmmmmm
  13. PRE-AMP PROJECT SRPP + HEADPHONE AMP
  14. 6BN11 vs 6CB6
  15. Is output stage local feedback necessary?
  16. Tube Longevity
  17. Power triode drive current requirements
  18. OPT Selection Question
  19. Recommend me a 6V6 P-P schematic
  20. Requesting advice on a pre-amp build. I'm working on asking realistic questions.
  21. 13e1 se "shade" some questions
  22. My first build VTA ST-120
  23. World Wide Audio, model: HBP-97a, Hybrid Power Amplifier - info needed
  24. DIY 50C5 mini amp...
  25. So you think you have cool tubes?????
  26. Layout
  27. Looking to ID this amp
  28. Help me to make tube amply
  29. CAT SL1 SIGNATURE schematik phono
  30. Have anyone built this 6V6 amp?
  31. GU-50 in Single-Ended Triode Configuration - What bias points?
  32. DC coupling on a LTP? Opinions and help needed on Fred's design.
  33. Power Selection - Help Needed
  34. Which speaker with a 1/4W tube amp?
  35. 6973 VS 6CZ5 substitute
  36. Third Reich tubes
  37. Hello...and another ST-70 project.
  38. Home theater magic smoke...smoked and I think I heard a mirror crack...
  39. Scott LK48-B restoration
  40. 3 - 12AU7 Preamp. Is there such an animal?
  41. 300b filament
  42. resistor 880 ohms cathode
  43. Anyone have a Bugle Boy logo
  44. Change of circuit from triode to tetrode
  45. Need upgrade info for my Atma-Sphere Novacron Amps
  46. JJ Kt77 Bias?
  47. tube rectified psu
  48. HELP!: my SET amp was turned off without a load and now it sound veiled!
  49. 5842 grid leak
  50. AMI Jukebox speaker impedence question
  51. Advice Needed: "Flabby" Amp Low-End
  52. Aikido transformer coupled output
  53. 12BH7A driver stage help
  54. Audio drive to g2 connected to g1 via 15K0
  55. KT88 SE Complete Kit
  56. Any high-end 6BM8 push pull tube amp schematic ?
  57. How a Triode Works
  58. EL3N substitute
  59. Magnavox AMP-185
  60. Best 6V6G that won't get me divorced..
  61. Shorted EL34 ?
  62. ARC VS60 hum in speaker
  63. Need help for a bias circuit
  64. Eico HF20 Output Txr Questions
  65. A Radford STA15 restoration story
  66. Tube Testing in DC Area
  67. Thorens PR24
  68. Newbie here with a couple questions
  69. 300B SwitchMode filament supply
  70. Mixed bias for balancing unmatched tubes in PPP?
  71. My First DIY Experience: An Aikido/Tetra Preamp
  72. how to test chokes for current and voltage
  73. pictures miniblok 1 and miniblok 2 by fred nachbaur
  74. Help with Aikido Preamp+class d amp
  75. will a PTX without center tap work?
  76. Anyone have information on 300B silvertone tube
  77. 6P14P push pull with low output
  78. passive 30Hz-20kHz Bandpass filter for tube preamp?
  79. My First Amp
  80. Frank's 6sn7 preamp
  81. My new 300B Amp
  82. help troubleshooting gradually distorting tube amp (dropping b+ voltage when hot)
  83. Tube Gear Supply/Surplus in Houston Area
  84. What 2a3 ?
  85. long tailed pair - need more gain
  86. how to bypass the volume pot on my SET amp?
  87. 2 stage AIKIDO
  88. Guys please help me with my Jolida 102B!
  89. Philbrick GAP/R K2-W question
  90. First time baby Huey amplifier build
  91. 6LB6's....
  92. Meng 6PI Biasing Question
  93. AIKIDO LV WON'T START
  94. Under rating of Vertical Sweep Tubes
  95. Simple 845 tube monoblock design
  96. Running on filament only
  97. soft stat
  98. BJT Bias?
  99. Preamp Squeal
  100. Hammond L101 compensation cap
  101. Powering a headphone amplifier with DC filament supply
  102. new to this
  103. miniblok 1 voltage problem
  104. How will this affect my amp?
  105. Tetra Phono Builders...got problems!
  106. yagoolar's tube amp projects
  107. Base material of GEC KT88 Feb 1960
  108. Headphone amp with 6n2p valve on 12V
  109. pcc189 for audio use
  110. Reading material
  111. 2A3 rectifier
  112. 866a valve test
  113. Anybody in the Knoxville area?
  114. Looking for simple Push-Pull tricks (from Baby Huey) #1
  115. Why wire an output transformer as autoformer ? (parafeed)
  116. Measuring unwanted grid current
  117. Tube companies
  118. Hi Performance Pre amp
  119. HH Scott Type 209 Amp
  120. 6l6gb PP w/fixed bias?
  121. Holy cow! Can anyone tell me why this wire is so pricey?
  122. EL34B 6N9P 5Z3P amplifier kit - any thoughts on schematic?
  123. 4 x EL84 in UL PP, 470 B+!! is this right
  124. What amp is this?
  125. PS Setup For Testing
  126. OTL designed by Tim Mellow with 4 6C33C?
  127. Quick question on this schematic
  128. Variac, how to ?
  129. Tube data sheets - inaccuracy
  130. Benny's new ForeWatt SRPP pre amplifier
  131. OddWatt PP UL amplifier from scratch
  132. OPT Impedance
  133. Rectifier Valves
  134. WE311 amp
  135. Sherwood S8000 transformers
  136. yaqin MS-12B Search for Diagrams
  137. EICO HF-30 - Schematic
  138. 12AU7 Phono Stage
  139. How to install a motor run capcitor
  140. Sanity check on B+ regulator
  141. 6B4G PPP idea
  142. First OTL breadboarded
  143. New amp build
  144. Tube Parametric EQ - Idea looking for clarification
  145. DHT heater supply
  146. MC/MM Phono Pream PCB
  147. Help Identifying Old Westinghouse Tube Amp?
  148. GM70 SE Amplifier
  149. OPT considerations
  150. Help - the pre amp I made is not working!
  151. Aikido tube connections.
  152. EL34 PP output tranny questions
  153. DC heater voltage 6 volts or 12 volts?
  154. Dynaco st70....Can I use 6 ohm speakers?
  155. Aikido vs. Foreplay
  156. I found a valve amp in my garage...
  157. Separate PSU to Amp connection
  158. cary SLA 70
  159. Help!!! My Audioromy FU29 amplifier was fried!
  160. Help!!! My Audioromy FU29 amplifier was fried!
  161. Take a look at my transformers
  162. miniblok 2 distorted sound
  163. Appropriate replacement OPT for Fisher 30-A with 2.5Ohm Secondary
  164. For hk citation II owners\experts.
  165. Dynakit Mark III amplifier
  166. Transformer in reverse current doubt
  167. CELLINI-2 a hybrid
  168. Need help starting
  169. ARC (Audio Research) VT50
  170. mixed mode bias
  171. 2C52 datasheet
  172. Yaqin SD-CD2 tube buffer - upgrading stock tubes
  173. 12v Tube amp
  174. Is this ok
  175. 12ax7 Bass Preamp Power Supply Question.
  176. Help a newbie out with his Sherwood S-800iii
  177. A&R 4008 output transformers
  178. Kulish Circuit
  179. A little digression= read on
  180. Sweep tubes and G3
  181. CCS - Help!
  182. Another odd-ball PA amplifier
  183. Question About High-Fidelity Magazine 195x - 196x
  184. The Heathkit MA-12 - A Mullard 5-10 In Disguise
  185. who have schematic of Phenix OTL G3?
  186. Drive requirements.....
  187. KT88 hybrid amplifier
  188. 2300 ohm vs 5000 ohm output trans question
  189. Has anyone used this regulator?
  190. Diy HiFi Supply Tram Mk2 DHT OTL Preamplifier
  191. Current mirror circuits
  192. splitter/driver stage
  193. Would someone explain this amp to me please?
  194. What am I experiencing?
  195. 6U10, 6AC10, 6D10, 6AV11
  196. My debut into the vacuum world: Yarland FV34B
  197. Resistor value tweaks for Radford STA35
  198. do you own a chinese tube integrate? does it.... smell?
  199. Needs help to find transformer
  200. 12AU7 / 12AX7 push-pull
  201. Subwoofer connection?
  202. Ultra-low Noise Valve Regulated PSU. How to?
  203. One channel has less glow
  204. 6l6 tube amp troubleshooring progress
  205. Baldwin organ transformers
  206. has anyone used a chip for an input driver to a 2A3 or the like??
  207. Good PSU for HT upt to 15mA??
  208. Edcor transformers have arrived, but really puzzled!
  209. Single tube, Single ended, 20W, impossible?
  210. Stan's Aikido Build
  211. Power transformer rating
  212. 7w 300b vs 350w Car audio observation (car loses)
  213. Seriously considering doing an OTL - but . .
  214. Emulating remote cut off
  215. Cheap Sakura Hybrid Tube Amp Modification
  216. screen tap on OPT
  217. Understanding Cathode Decoupling
  218. How to test interstage transformers?
  219. DIY Tube Mic
  220. Modified 6C33C
  221. Counterpoint SA-3.1 Rebuild
  222. 6V6 flare at start up
  223. Tube aging, in-circuit test?
  224. HV Regulator board
  225. What kind of top cap for 6V7G?
  226. High voltage and heat sinks
  227. GM-70 family with top cap anode?
  228. testing 8417's on mercury 1000
  229. 6N3 Tube Preamp with DC-DC converter
  230. Question About Worn Tubes
  231. help ID 4-500 old stock tubes
  232. 6SN7 SRPP preamp
  233. Reduced Heater voltage to reduce noise
  234. ECL82 monoblock 'spud' and a question
  235. Small Tube/SS hybrid amplifier design 9V
  236. Plate load impedance
  237. Dynaco 440 Transformer Cathode/Screen Taps 6P1P 6AQ5 UL transformer
  238. Good idle current for NOS 7868's
  239. 6N2P - WHAT THE?????????????
  240. Got an old Westinghouse radio today!!!
  241. Distinction between Driver and Output stages
  242. UL P/P KT88 Class A
  243. Problem with 12ax7 phono stage
  244. Was ist das?
  245. Rset values for IXYS IXTP01N100D
  246. Dutch Book
  247. Tube amplifier chassis damping
  248. How the heck do I solve this problem????
  249. Pentode to Triode Operation
  250. AbouT the PSU II simulator & the "Cockeyed Bridge"

Content Relevant URLs by vBSEO 3.3.2