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

  1. AMI Jukebox speaker impedence question
  2. Advice Needed: "Flabby" Amp Low-End
  3. Aikido transformer coupled output
  4. Audio measurements on tube amp. ? look here
  5. 12BH7A driver stage help
  6. Audio drive to g2 connected to g1 via 15K0
  7. KT88 SE Complete Kit
  8. Any high-end 6BM8 push pull tube amp schematic ?
  9. How a Triode Works
  10. EL3N substitute
  11. Magnavox AMP-185
  12. Best 6V6G that won't get me divorced..
  13. Shorted EL34 ?
  14. ARC VS60 hum in speaker
  15. Need help for a bias circuit
  16. Eico HF20 Output Txr Questions
  17. A Radford STA15 restoration story
  18. Tube Testing in DC Area
  19. Thorens PR24
  20. Newbie here with a couple questions
  21. 300B SwitchMode filament supply
  22. Mixed bias for balancing unmatched tubes in PPP?
  23. My First DIY Experience: An Aikido/Tetra Preamp
  24. how to test chokes for current and voltage
  25. pictures miniblok 1 and miniblok 2 by fred nachbaur
  26. Help with Aikido Preamp+class d amp
  27. will a PTX without center tap work?
  28. Anyone have information on 300B silvertone tube
  29. 6P14P push pull with low output
  30. passive 30Hz-20kHz Bandpass filter for tube preamp?
  31. My First Amp
  32. Frank's 6sn7 preamp
  33. My new 300B Amp
  34. help troubleshooting gradually distorting tube amp (dropping b+ voltage when hot)
  35. Tube Gear Supply/Surplus in Houston Area
  36. What 2a3 ?
  37. long tailed pair - need more gain
  38. how to bypass the volume pot on my SET amp?
  39. 2 stage AIKIDO
  40. Guys please help me with my Jolida 102B!
  41. Philbrick GAP/R K2-W question
  42. First time baby Huey amplifier build
  43. 6LB6's....
  44. LMG Capacitor
  45. Meng 6PI Biasing Question
  46. AIKIDO LV WON'T START
  47. Under rating of Vertical Sweep Tubes
  48. Simple 845 tube monoblock design
  49. Running on filament only
  50. soft stat
  51. BJT Bias?
  52. Preamp Squeal
  53. Hammond L101 compensation cap
  54. Powering a headphone amplifier with DC filament supply
  55. new to this
  56. miniblok 1 voltage problem
  57. How will this affect my amp?
  58. Tetra Phono Builders...got problems!
  59. yagoolar's tube amp projects
  60. Base material of GEC KT88 Feb 1960
  61. Headphone amp with 6n2p valve on 12V
  62. pcc189 for audio use
  63. Reading material
  64. 2A3 rectifier
  65. help calibrating a mercury model 1000 tube tester
  66. 866a valve test
  67. Anybody in the Knoxville area?
  68. Looking for simple Push-Pull tricks (from Baby Huey) #1
  69. Why wire an output transformer as autoformer ? (parafeed)
  70. Measuring unwanted grid current
  71. Tube companies
  72. heathkit a7???guitar amp
  73. Hi Performance Pre amp
  74. HH Scott Type 209 Amp
  75. 6l6gb PP w/fixed bias?
  76. Holy cow! Can anyone tell me why this wire is so pricey?
  77. EL34B 6N9P 5Z3P amplifier kit - any thoughts on schematic?
  78. 4 x EL84 in UL PP, 470 B+!! is this right
  79. What amp is this?
  80. PS Setup For Testing
  81. OTL designed by Tim Mellow with 4 6C33C?
  82. Bassman 100 schematic questions
  83. Quick question on this schematic
  84. Variac, how to ?
  85. Tube data sheets - inaccuracy
  86. Benny's new ForeWatt SRPP pre amplifier
  87. OddWatt PP UL amplifier from scratch
  88. OPT Impedance
  89. Rectifier Valves
  90. WE311 amp
  91. Sherwood S8000 transformers
  92. yaqin MS-12B Search for Diagrams
  93. EICO HF-30 - Schematic
  94. 12AU7 Phono Stage
  95. How to install a motor run capcitor
  96. Sanity check on B+ regulator
  97. 6B4G PPP idea
  98. First OTL breadboarded
  99. New amp build
  100. Tube Parametric EQ - Idea looking for clarification
  101. Peavey Valveking 100- static sound during warm-up
  102. My Fender Twin Amp Not Working - get your guesses in
  103. DHT heater supply
  104. MC/MM Phono Pream PCB
  105. Help Identifying Old Westinghouse Tube Amp?
  106. GM70 SE Amplifier
  107. OPT considerations
  108. Help - the pre amp I made is not working!
  109. Aikido tube connections.
  110. EL34 PP output tranny questions
  111. DC heater voltage 6 volts or 12 volts?
  112. Dynaco st70....Can I use 6 ohm speakers?
  113. Aikido vs. Foreplay
  114. I found a valve amp in my garage...
  115. Separate PSU to Amp connection
  116. cheep miniure meters
  117. cary SLA 70
  118. Help!!! My Audioromy FU29 amplifier was fried!
  119. Help!!! My Audioromy FU29 amplifier was fried!
  120. Take a look at my transformers
  121. input transformer for Simple SE Tubelab amp
  122. miniblok 2 distorted sound
  123. Appropriate replacement OPT for Fisher 30-A with 2.5Ohm Secondary
  124. For hk citation II owners\experts.
  125. Dynakit Mark III amplifier
  126. Transformer in reverse current doubt
  127. CELLINI-2 a hybrid
  128. Need help starting
  129. ARC (Audio Research) VT50
  130. mixed mode bias
  131. 2C52 datasheet
  132. Yaqin SD-CD2 tube buffer - upgrading stock tubes
  133. 12v Tube amp
  134. Is this ok
  135. 12ax7 Bass Preamp Power Supply Question.
  136. Help a newbie out with his Sherwood S-800iii
  137. A&R 4008 output transformers
  138. Kulish Circuit
  139. A little digression= read on
  140. Sweep tubes and G3
  141. CCS - Help!
  142. Another odd-ball PA amplifier
  143. 25W with 2xEL86(6CW5)!
  144. Question About High-Fidelity Magazine 195x - 196x
  145. The HEATHKIT MA-12 a MULLARD 5-10 In Disguise.
  146. who have schematic of Phenix OTL G3?
  147. CHAMP8 with ECLL800
  148. Drive requirements.....
  149. KT88 hybrid amplifier
  150. 2300 ohm vs 5000 ohm output trans question
  151. Has anyone used this regulator?
  152. Diy HiFi Supply Tram Mk2 DHT OTL Preamplifier
  153. Current mirror circuits
  154. splitter/driver stage
  155. Would someone explain this amp to me please?
  156. What am I experiencing?
  157. 6U10, 6AC10, 6D10, 6AV11
  158. My debut into the vacuum world: Yarland FV34B
  159. Resistor value tweaks for Radford STA35
  160. do you own a chinese tube integrate? does it.... smell?
  161. Needs help to find transformer
  162. 12AU7 / 12AX7 push-pull
  163. Subwoofer connection?
  164. Ultra-low Noise Valve Regulated PSU. How to?
  165. One channel has less glow
  166. 6l6 tube amp troubleshooring progress
  167. Baldwin organ transformers
  168. has anyone used a chip for an input driver to a 2A3 or the like??
  169. Good PSU for HT upt to 15mA??
  170. Edcor transformers have arrived, but really puzzled!
  171. PCL86 Tube Pre-Amp for guitar. Any Idea?
  172. Single tube, Single ended, 20W, impossible?
  173. Stan's Aikido Build
  174. Power transformer rating
  175. 7w 300b vs 350w Car audio observation (car loses)
  176. Seriously considering doing an OTL - but . .
  177. Emulating remote cut off
  178. Cheap Sakura Hybrid Tube Amp Modification
  179. screen tap on OPT
  180. Understanding Cathode Decoupling
  181. How to test interstage transformers?
  182. DIY Tube Mic
  183. Modified 6C33C
  184. Counterpoint SA-3.1 Rebuild
  185. 6V6 flare at start up
  186. Tube aging, in-circuit test?
  187. HV Regulator board
  188. What kind of top cap for 6V7G?
  189. Changing bass amp output transformer
  190. First timer wood chassis hints
  191. High voltage and heat sinks
  192. GM-70 family with top cap anode?
  193. testing 8417's on mercury 1000
  194. 6N3 Tube Preamp with DC-DC converter
  195. Question About Worn Tubes
  196. help ID 4-500 old stock tubes
  197. 6SN7 SRPP preamp
  198. Reduced Heater voltage to reduce noise
  199. ECL82 monoblock 'spud' and a question
  200. Small Tube/SS hybrid amplifier design 9V
  201. Gibson PA Amp
  202. Plate load impedance
  203. Dynaco 440 Transformer Cathode/Screen Taps 6P1P 6AQ5 UL transformer
  204. Good idle current for NOS 7868's
  205. 6N2P - WHAT THE?????????????
  206. Got an old Westinghouse radio today!!!
  207. Distinction between Driver and Output stages
  208. Need a decent chassis punch set
  209. UL P/P KT88 Class A
  210. Problem with 12ax7 phono stage
  211. LA2A parts, T4B spare
  212. Was ist das?
  213. Rset values for IXYS IXTP01N100D
  214. Dutch Book
  215. Tube amplifier chassis damping
  216. How the heck do I solve this problem????
  217. Pentode to Triode Operation
  218. AbouT the PSU II simulator & the "Cockeyed Bridge"
  219. GM70 bias & IT ratio question
  220. Transformer or choke sealed with metal case
  221. Peavy windsor tube head issue
  222. Projector 6V6 Tube Amp rats nest p2p
  223. micro pre amp
  224. Aikido - calculating Rk for new tubes
  225. Steady thumping noise in preamp
  226. Leak Stereo 20 hum and buzz problem
  227. 5V AC maining for filaments
  228. Topology for Schade
  229. Thorsten 6SN7 Line stage.
  230. 12v B+ Tube buffer 12AX7
  231. 300B preamp - best operating point
  232. home made tube amp with 12v b+ how to build one?
  233. Engineer's Amp
  234. Show My Tube Headphone Amp [Add-On Modulars Design Supporting IPOD/IPHONE]
  235. FFT for adjusting tubes
  236. Music to soothe the savage tubes.
  237. Voltage divider instead of expensive volume pot or stepped attenuator.
  238. Question about Hickok 539C
  239. Long-tail pair phase splitter
  240. LM317 calculator for filament circuit
  241. Self-Biased Cathode Follower Output Point
  242. filaments power supply
  243. Power tube buffer
  244. Latching Switch Assemblies
  245. Easy Way To Reduce 251V to 235V?
  246. EL84 Push Pull 25-30 watts
  247. Exploded view of valves
  248. Infineon BSP135 depletion mode mosfet
  249. Show us you COMPACT tube amps !
  250. HV Regulator

Content Relevant URLs by vBSEO 3.3.2