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

  1. GU50 socket blues
  2. New 18W build el84/12ax7
  3. Why a follower in a parafeed triodeamp?
  4. Heads up for Australian tube amp diyers
  5. build new amp from 2 vintage tube amps?
  6. Sansui AU-111 rebuild and need some help
  7. Interstage/Input Transformer
  8. VALVEKING ROYAL8 with 6p14p-EV
  9. Ergo Ella PP Amplifier Wiring
  10. 6DX8/ECL84/6F3P Baby Huey
  11. Old tube amp info?
  12. MEIXING MING DA MC 2006 Phonostage schematics
  13. Problem with a Peavey Classic 50
  14. Just what the world needs - another EL84 amp
  15. Help me pick el34b tubes
  16. heathkit SA2
  17. Need help on RIAA
  18. GU50 plate curves
  19. What tube is this?
  20. Help with GZ34
  21. Need help in modifying Roberts 770 monoblocks
  22. PP and PPP
  23. ECL82 Single Tube Amp
  24. circuit idea
  25. Need Telefunken Hymnus 5438 Dial Glass
  26. Bias probes/Am I getting true readings
  27. How to measure output power
  28. Oddblock Wooden Case
  29. Amplifier Quandary
  30. Fuse blows instantly
  31. Looking for a fairly simple Hi gain tube pre amp project
  32. Best 2a3 PP OPT.
  33. Sharing cathode resistor and capacitor
  34. Power tubes in cascode for output section?
  35. good tube service tech in Los Angeles?
  36. Proposal for a new sticky thread
  37. The History of the EL-34 and other Pentodes and Beam Tetrodes.
  38. PCF what?
  39. stupid question about heater wire to ground
  40. OTL All American Five? (or Ten)
  41. Scored a very nice H H Scott 272!
  42. Simple DIY Stereo Tube Amp with around 20W
  43. Maton Amp
  44. New Tech
  45. LS8 pre kit as an output stage for DAC?
  46. Japanese Valves
  47. B+ delay for DHT amp
  48. QQV03-20A/CV2799
  49. 0,22 0,33 0,47.....uF
  50. Most powerful SE DIY design?
  51. 420vdc supply for a tube amp
  52. PSE 2a3 operating points?
  53. Ju-Jutsu: The Ultimate Monoblock
  54. Looking for Phono Stage ...
  55. Finished my Fisher 460t-thanks
  56. Datasheet Cpk values
  57. Eico635 tester
  58. 6p3s...
  59. Help with Amp Salvage
  60. 808 SE Build
  61. how to bias my rebuilt dynaco st 70
  62. Want help - RCA Tube Manual RIAA Phono Stage
  63. Tube Pre-amp for both CD and Phono inputs
  64. Cascode Driver Oscillation
  65. 872b or 6gj5a for a homebrew bass amp
  66. how does it sound and perform?
  67. Bootstrapped long tail
  68. Thorens TEM 3200 clone
  69. Identifying this RCA Transformer
  70. Tube burning
  71. Add Standby Directly after Rectifier, or After First Filter Stage?
  72. Help with some tube ID
  73. CCS power amp bias
  74. this is EL34 tube of what model?
  75. Looking for constructive criticism on my first design
  76. Audio note kit 1 vs Meishu
  77. Tube Amp Gain V.S. RF Gain
  78. Kool-mu material for building audio transformer
  79. Buzz/Hum in Matrix amplifier
  80. Optimation PA-250AC Lab-Grade Audio Amplifier
  81. RS1003 in SE triode-UL monoblocks
  82. Bypass capacitors in Tube amps
  83. Basic question re: gNFB around 3 stages
  84. James PP Audio Transformers, any good?
  85. Seeking advice for tube amp kit on,seems to be, chinese site
  86. Tube pricing from 1981
  87. 6e5p WCF headphone amp with no cap!
  88. "How it's made" vacuum tubes..
  89. Citation I and IV phono schematic query
  90. GS-4V High-mu russian triode for RIAA preamp
  91. good source for amp chassis in europe?
  92. Help identify and replacement of ? resistor
  93. New tube amp diy kit required power?
  94. Decoupling DC heater supply between valves..benefit?
  95. The Aikido Comedy: Straight Talk
  96. Recapping tube preamp questions
  97. A tube amp that's actually a tesla coil.
  98. Tube "Orientation"
  99. 18 watt tremolo vvr
  100. Pre amp output, would this work?
  101. Aikido Power Amp.....Possible??
  102. 12AX7 questions
  103. 6550 PUSH-PULL
  104. CCS at plate? Unknown schematic part
  105. Most odd grid choke behaviour.
  106. Spec for Altec TP-404 Transformer
  107. why do wimpy drivers for 2A3 work as well as they do?
  108. Seeking advice on Tube buffer / pre-amp
  109. 8x Push-pull KT88 class A in triode mode
  110. Tube Pre dull into Tube Amp - cause ?
  111. FINALLY I can start building my GM70
  112. Russian triodes ГИ-15Б arriving in a few days
  113. Cap or resistor
  114. KT88/PP driver confusion
  115. Simple SE GU-50
  116. Darling 1626
  117. 01a DHT Preamp
  118. Suitable tubes for Gomes output
  119. phono line stage project
  120. Whats wrong with this circuit?
  121. Any Newcomb Gurus.?
  122. Preamp Tube MU Level?
  123. SRPP Paraccordion topology ?
  124. Replacing 6922 with 6FQ7 in Conrad Johnson ET3 preamp
  125. Modification of a Chinese KT90 PP amplifier
  126. Tricky Headphone Amp design for AK4396
  127. How to know voltage bias adjustmentwith this data?
  128. Strange Stability Enhancement Trick
  129. has anyone bought tubes from http://www.tangotubes.com/
  130. “Earmax / G3 / Morgan Jones / Cavalli” Headphone Amp Reissue with 6SN7 Steroids
  131. Ever heard of British transofmer company "Ro"?
  132. A friend gave me some random tubes...
  133. Replacement for 6e2 without vu
  134. PP GU50 triode strapped project
  135. Tube VAS stage questions???
  136. OT impedance help: 9.8 vs 8k
  137. popping & crackling noise from restored valve AM radio
  138. Choosing 6550 PP Output Transformer
  139. Reversing Interstage Transformer
  140. Aikido 9 pin All in One Build
  141. KT88 PP UL Design Help Needed
  142. Cayin A-300B schematic needed
  143. Please Recommend a Preamp!
  144. Which Antek transforms to use
  145. Integrated Amp as Preamp and Subwoofer amp
  146. Uses for 715C Pulse Tetrode
  147. PP KT-88 w/866A MV HT Supply
  148. EC88 (6DL4) NOS Mullard - any use at all?
  149. Advice sought on thermionic headphone amp
  150. Eico HF-81: Input Selector bypass
  151. 12b4 bass rolloff problem
  152. No Right ch sound on yaqin mc10l
  153. tester causing bias to rise?
  154. Heaters & Filaments: AC vs. DC
  155. Old HP power transformers... need some wiring advice!
  156. Old HP power transformers... need some wiring advice!
  157. RCA RS177H just dosen't sound right! Caps?
  158. silicon or tube rectifier in an EL34 SE
  159. Help original 300G LEGACY
  160. 813 Tube-Steak!
  161. Basic 12AU7 heatrr question
  162. Shipping a vacuum tube to China
  163. 6DJ8/ECC88-SRPP Tube Preamplifier
  164. Help needed: hum noise in Eimac 250TL driven by 75TL Single End Amplifier
  165. Found tons of Tubes,and many other parts
  166. Ampeg B15 Heritage Clone Help
  167. EZ80 Data Sheets, R-Lim and Max Cap
  168. Filament Voltages CT vs Non-CT
  169. Troubleshooting help needed
  170. What is it? Tube guessology
  171. Bass & Treble controls, or rather lack of.
  172. Quicksilver 8417 Power Supply Question
  173. Why a sudden distortion in treble of this SET amplifier?
  174. 5f1 Champ grounding
  175. Antitriode PP with EL34
  176. How to calculate Pout for Push Pull design
  177. Newbie Question - Power Transformer vs Isolation Transformer
  178. All tubes red plating
  179. Exceeding bias voltage?
  180. Vacuum State RTP Preamp Problem
  181. Alfred Morgan Tube Preamplifier
  182. 845 vs GM70
  183. Looking for project suggestions - 12au7 pre-amp?
  184. Contemporary tradition breaking amp schematics.
  185. ul - triode coupled screen grid resistor
  186. Optimum driver valve for an interstage-transformer-driven SE 300B
  187. 6C33C
  188. Soundcraftsmen 5050
  189. Tetra Phono Question
  190. WF tube
  191. Opt laminations isolation
  192. Heretical Source
  193. Broskie auto bias
  194. heater wiring - the Good the Bad and the Ugly
  195. AC Line Filter
  196. Counterpoint SA5000 Help
  197. Problem with ECC83 measurement values - please help
  198. Newbie Bias help ?
  199. AV305m AVVT
  200. Pot mechanical resistance and restoration..
  201. HMV Little Nipper mantle radio = 1 STEREO
  202. What's the simplest way to adjust filament voltage?
  203. GDAP-06
  204. Audio Note L6 - Schematic?
  205. Preventing HV flashover on socket pins
  206. Best "Vintage" Stereo Pres that SoftClip and lotsa Harmonics
  207. SE with PP OPT's?
  208. 12ax7/12AT7 Recommendations
  209. HELP: Eimac 75TL amp high frequency roll off
  210. unison reserch s8, let's build it!
  211. Where do super high end companies get their transformers?
  212. Tube Tester Panel Meter
  213. Attic find AMP
  214. Help getting Imax and Eb approximations for a push-pull amp
  215. Is this amp OK to buy, or is this a problem?
  216. Swirling Harmonics, can it be described
  217. Line stage with u-follower and nfb
  218. Newbie looking for help, pre-out to tube amp.
  219. Unison research integrated ampliphier schematics
  220. FET CCS anode load and RFI/oscillation.
  221. Old schematic
  222. Newbie Looking for Replacement OPTS Motorola Console Amp
  223. Merlyn- May AudioXpress
  224. How to clean tubes?
  225. does the 3A5 have the stones to drive a 2A3?
  226. New amp: 13DE7 SE hybrid
  227. My amp is motorboating, improve it with b+ regulator ?
  228. Can you identify these amps?
  229. Sowter SA01 - anyone used it ?
  230. Mikael‑Abdellah‑SE‑KT88 Bias & Voltage readings Help?
  231. Resistors and combinations
  232. thr light in pcl82
  233. Bogen L330 - Worth restoring?
  234. Supro model 24 amp transformers
  235. Those Magnificent Television Tubes
  236. Demagnetizing OPT?
  237. Real DIY fun hybrid testing.
  238. Extreme hum in EQ output
  239. 46 triode-strapped DHT spice model
  240. SET output impedance vs speaker impedance
  241. Help with layout of tube preamp
  242. eico HF-65
  243. Wirewound bias pot problem.
  244. Driver for Telefunken RS242 in class A2
  245. Help on my signal generator
  246. another tube fact or fallacy
  247. Gap in Transformer Lams - OCD Check
  248. how to test...
  249. chinese tube amp
  250. tube/valve pc-80

Content Relevant URLs by vBSEO 3.3.2