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 99 100 101 102 103 104 105

  1. Basic question re: gNFB around 3 stages
  2. James PP Audio Transformers, any good?
  3. Seeking advice for tube amp kit on,seems to be, chinese site
  4. Tube pricing from 1981
  5. 6e5p WCF headphone amp with no cap!
  6. "How it's made" vacuum tubes..
  7. Citation I and IV phono schematic query
  8. GS-4V High-mu russian triode for RIAA preamp
  9. good source for amp chassis in europe?
  10. Help identify and replacement of ? resistor
  11. New tube amp diy kit required power?
  12. Decoupling DC heater supply between valves..benefit?
  13. The Aikido Comedy: Straight Talk
  14. Recapping tube preamp questions
  15. A tube amp that's actually a tesla coil.
  16. Tube "Orientation"
  17. 18 watt tremolo vvr
  18. Pre amp output, would this work?
  19. Aikido Power Amp.....Possible??
  20. 12AX7 questions
  21. 6550 PUSH-PULL
  22. CCS at plate? Unknown schematic part
  23. Most odd grid choke behaviour.
  24. Spec for Altec TP-404 Transformer
  25. why do wimpy drivers for 2A3 work as well as they do?
  26. Seeking advice on Tube buffer / pre-amp
  27. 8x Push-pull KT88 class A in triode mode
  28. Tube Pre dull into Tube Amp - cause ?
  29. FINALLY I can start building my GM70
  30. Russian triodes ГИ-15Б arriving in a few days
  31. Cap or resistor
  32. KT88/PP driver confusion
  33. Simple SE GU-50
  34. Darling 1626
  35. 01a DHT Preamp
  36. Suitable tubes for Gomes output
  37. phono line stage project
  38. Whats wrong with this circuit?
  39. Any Newcomb Gurus.?
  40. Preamp Tube MU Level?
  41. SRPP Paraccordion topology ?
  42. Replacing 6922 with 6FQ7 in Conrad Johnson ET3 preamp
  43. Modification of a Chinese KT90 PP amplifier
  44. Tricky Headphone Amp design for AK4396
  45. How to know voltage bias adjustmentwith this data?
  46. Strange Stability Enhancement Trick
  47. has anyone bought tubes from http://www.tangotubes.com/
  48. “Earmax / G3 / Morgan Jones / Cavalli” Headphone Amp Reissue with 6SN7 Steroids
  49. Ever heard of British transofmer company "Ro"?
  50. A friend gave me some random tubes...
  51. Replacement for 6e2 without vu
  52. PP GU50 triode strapped project
  53. Tube VAS stage questions???
  54. OT impedance help: 9.8 vs 8k
  55. popping & crackling noise from restored valve AM radio
  56. Choosing 6550 PP Output Transformer
  57. Reversing Interstage Transformer
  58. Aikido 9 pin All in One Build
  59. KT88 PP UL Design Help Needed
  60. Cayin A-300B schematic needed
  61. Please Recommend a Preamp!
  62. Which Antek transforms to use
  63. Integrated Amp as Preamp and Subwoofer amp
  64. Uses for 715C Pulse Tetrode
  65. PP KT-88 w/866A MV HT Supply
  66. EC88 (6DL4) NOS Mullard - any use at all?
  67. Advice sought on thermionic headphone amp
  68. Eico HF-81: Input Selector bypass
  69. 12b4 bass rolloff problem
  70. No Right ch sound on yaqin mc10l
  71. tester causing bias to rise?
  72. Heaters & Filaments: AC vs. DC
  73. Old HP power transformers... need some wiring advice!
  74. Old HP power transformers... need some wiring advice!
  75. RCA RS177H just dosen't sound right! Caps?
  76. silicon or tube rectifier in an EL34 SE
  77. Help original 300G LEGACY
  78. 813 Tube-Steak!
  79. Basic 12AU7 heatrr question
  80. Shipping a vacuum tube to China
  81. 6DJ8/ECC88-SRPP Tube Preamplifier
  82. Help needed: hum noise in Eimac 250TL driven by 75TL Single End Amplifier
  83. Found tons of Tubes,and many other parts
  84. EZ80 Data Sheets, R-Lim and Max Cap
  85. Filament Voltages CT vs Non-CT
  86. Troubleshooting help needed
  87. What is it? Tube guessology
  88. Bass & Treble controls, or rather lack of.
  89. Quicksilver 8417 Power Supply Question
  90. Why a sudden distortion in treble of this SET amplifier?
  91. Antitriode PP with EL34
  92. How to calculate Pout for Push Pull design
  93. Newbie Question - Power Transformer vs Isolation Transformer
  94. All tubes red plating
  95. Exceeding bias voltage?
  96. Vacuum State RTP Preamp Problem
  97. Alfred Morgan Tube Preamplifier
  98. 845 vs GM70
  99. Looking for project suggestions - 12au7 pre-amp?
  100. Contemporary tradition breaking amp schematics.
  101. ul - triode coupled screen grid resistor
  102. Optimum driver valve for an interstage-transformer-driven SE 300B
  103. 6C33C
  104. Soundcraftsmen 5050
  105. Tetra Phono Question
  106. WF tube
  107. Opt laminations isolation
  108. Heretical Source
  109. Broskie auto bias
  110. Heater Wiring - the Good the Bad and the Ugly
  111. AC Line Filter
  112. Counterpoint SA5000 Help
  113. Problem with ECC83 measurement values - please help
  114. Newbie Bias help ?
  115. AV305m AVVT
  116. Pot mechanical resistance and restoration..
  117. HMV Little Nipper mantle radio = 1 STEREO
  118. What's the simplest way to adjust filament voltage?
  119. GDAP-06
  120. Audio Note L6 - Schematic?
  121. Preventing HV flashover on socket pins
  122. Best "Vintage" Stereo Pres that SoftClip and lotsa Harmonics
  123. SE with PP OPT's?
  124. 12ax7/12AT7 Recommendations
  125. HELP: Eimac 75TL amp high frequency roll off
  126. unison reserch s8, let's build it!
  127. Where do super high end companies get their transformers?
  128. Tube Tester Panel Meter
  129. Attic find AMP
  130. Help getting Imax and Eb approximations for a push-pull amp
  131. Is this amp OK to buy, or is this a problem?
  132. Swirling Harmonics, can it be described
  133. Line stage with u-follower and nfb
  134. Newbie looking for help, pre-out to tube amp.
  135. Unison research integrated ampliphier schematics
  136. FET CCS anode load and RFI/oscillation.
  137. Old schematic
  138. Newbie Looking for Replacement OPTS Motorola Console Amp
  139. Merlyn- May AudioXpress
  140. How to clean tubes?
  141. does the 3A5 have the stones to drive a 2A3?
  142. New amp: 13DE7 SE hybrid
  143. My amp is motorboating, improve it with b+ regulator ?
  144. Can you identify these amps?
  145. Sowter SA01 - anyone used it ?
  146. Mikael‑Abdellah‑SE‑KT88 Bias & Voltage readings Help?
  147. Resistors and combinations
  148. thr light in pcl82
  149. Bogen L330 - Worth restoring?
  150. Those Magnificent Television Tubes
  151. Demagnetizing OPT?
  152. Real DIY fun hybrid testing.
  153. Extreme hum in EQ output
  154. 46 triode-strapped DHT spice model
  155. SET output impedance vs speaker impedance
  156. Help with layout of tube preamp
  157. eico HF-65
  158. Wirewound bias pot problem.
  159. Driver for Telefunken RS242 in class A2
  160. Help on my signal generator
  161. another tube fact or fallacy
  162. Gap in Transformer Lams - OCD Check
  163. how to test...
  164. chinese tube amp
  165. tube/valve pc-80
  166. GM-70 All done
  167. preamp for reciever?
  168. Designing a Tube Rectifier Circuit
  169. Bogen RP40A transformers....what to build with them?
  170. Heads Up for "El Cheapo" Builders
  171. replacing kt66 valves
  172. Help with power transformer identification
  173. 6-8x el84 Per channel
  174. To vary a signal pentode to triode in stages
  175. I have 2 choices for resistive load, need opinions.
  176. Tesla PCC88 7DJ8 dual triode - Help Needed.
  177. PP6550
  178. LT1083 interesting startup problem
  179. ECC33 Driver Stage
  180. Hiraga's Improved Concertina Phase Splitter
  181. 274B a direct replacement for 5AR4/GZ34?
  182. Help power up akai M8 amps
  183. Sonic Frontiers Power 3 Help!
  184. ImPasse Preamp now online
  185. Power supply for tube preamplifier with PCC88
  186. Don't know where to start...
  187. DIY noob
  188. 300B amp cathode bypass
  189. Amp hum with Preamp off
  190. First Project with these tubes
  191. 7189a socket rewiring
  192. Hybrid rectifiers in PSUD2
  193. Feedback / experience wanted on building the Audio note L4 Integrated EL34 PP Amp Kit
  194. About 6AS7BTL Amp
  195. Output Stage Protection Circuit
  196. Silly basic layout question - AC heaters
  197. heater voltage variation for special tubes
  198. Want to build a 807 Vixen.. Looking for help.
  199. Connecting Speakers to Yaqin 10L
  200. Gyrator Filter
  201. 6ab4 tube socket mounting
  202. Any Moto heads? Need OT advice please
  203. Did I break my tube? (new blue glow)
  204. I need help with ccs based LTP
  205. 4033L- rare triode tube.
  206. Single tube linestage schematic wanted: 8CG7
  207. Tetra Sans PS
  208. Tone controls
  209. Vintage Heathkit Electronic Switch as soundcard interface
  210. K-12M extra caps??
  211. Looking for Tube Amp Kit Recommendations
  212. high voltage after cap. change
  213. My first tube amp
  214. Recommendations for 6888 triode operating point?
  215. Mullard 12AX7 part uniformity
  216. 6n15n-EB confusion
  217. Noob Question: Phono Preamp
  218. Transformer data required P782
  219. Snubbers on Power Transformer Secondaries
  220. CCS for 6V6 PP amp
  221. screen voltage for triode strapped pentode
  222. New Driver
  223. purpose and value importance of resistor
  224. Values for Vintage Amp's & Preamp's Paragon 12(70's) & More
  225. Help with amp please.
  226. Another Discrete Current Source
  227. 834 Triode amp
  228. Determing the reason for mystery? cap in schematic.
  229. Dyna ST70 to Dual-differential EL34 triode amp project
  230. Tube Signal to Noise Ratio / Dynamic Range
  231. fluctating bias
  232. Just tried a Wire Wound pot for volume.
  233. LED's in the cathode..
  234. Dr. Arthur Loesch
  235. Counterpoint SA-220 mods
  236. Broskie P-P Bridged Output Stage
  237. Would a member fluent in technical German please have a look at this link?
  238. Damaged tube? EL84
  239. Heathkit AA-161 EL84/6BQ5 PP mono integrated amp mod
  240. vk-2100 mod question please
  241. Heater supply
  242. 6111/6n16b - linestage noise problem
  243. OPT specs
  244. Re: Tube Line gain stage with pcc88 or ecc82
  245. Knight-kit KA-55
  246. Can I delay part of a B supply this way?
  247. Tube Preamp turn on circuit
  248. SE GM-70 for 700-800 euro?
  249. filter cap markings
  250. tube buffer noise cancellation

Content Relevant URLs by vBSEO 3.3.2