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. Aikido buffer/gain selector?
  2. Gaijin friendly audio shop in Tokyo area?
  3. Troubleshooting channel dropout
  4. "groundbus" is this right?
  5. About New Production Tubes
  6. suche JJ E88CC oder 6922 Sovtek in Berlin
  7. 8ohm output transformer with a 4ohm load
  8. Power transformer - good for anything?
  9. Beginner question, swap .047uf for .05uf?
  10. Tetra phono stage
  11. Japanese OPTs
  12. Changing secondary voltage (Uncivilized way)
  13. 4EH7 opinions anyone?
  14. Silvertone 45A tubes....rare variant
  15. single 12AT7 in a tubelab simple se
  16. Finished the "big one"!
  17. CV428 or 5B254M useful?
  18. How about making your own tubes?!
  19. entry level int-amp?
  20. What Cap Is This?
  21. help please with kt-88 ultralinear o/p transformer
  22. A flea thingy that sounds good
  23. Mullard vs. Williamson 60W UL PP amp. Which one?
  24. Need help with PSUD II model
  25. 5v to 2.5v for 2a3 filament
  26. Does 2A3 require a grid stopper?
  27. Hammond ECL86/6GW8 conversion
  28. Connecting two opt's to act as one.
  29. Usefullness of tubes
  30. twisted/isolated/shielded wires?
  31. Feedback question
  32. What tubes for a tube amp?
  33. SE-OPTs
  34. Phase splitting using directly heated tubes?
  35. Change EL84 from Triode to Ultra linear
  36. DC hybrid folded-cascode for Schade
  37. New UK Manufacturer of Valves
  38. Can any here explain the JHS designation?
  39. Too good to be true???
  40. Judging a tube's condition
  41. EF86 tube preamp
  42. Any tips for snap in type caps to replace solder lug cans?
  43. 6EM7 SET Headamp
  44. Are these ALL really EL34 subs?
  45. parallel tubes
  46. Changing the frequency of AC from mains to lower, out of audible range???
  47. Se 6550
  48. New Suppo Audio EL34 amp
  49. 60Watt+ valve design wanted
  50. Interesting tube on e-bay for trans atlantic cable
  51. Need help solving problem on new 2A3 build
  52. Tube and Passive Preamps-Auto Transformers for Attenuators/Volume Control - Overview
  53. Peavey Classic 30 - Squeal
  54. Where bay M6 lamination (M4,M2) metal for transformer
  55. dynamic pentode screen draw
  56. Tube Sockets
  57. Circuit Ideas for the 815 (martian tube)
  58. Old Tektronix unit, usefull?
  59. my transformer output has a center tap: what do I do with this?
  60. 6AV5GA amp?
  61. Phase splitter idea
  62. Lowering noise in small signal pentodes?
  63. Articles from the past
  64. tube upgrade for vintage orange 120
  65. Help for LTP/CCS plus cathode follower
  66. Conrad Johnson PV-5, my next project, some simple questions
  67. ALTEC 1566a (DiY...if)
  68. Friday Night Fun with a ST-70
  69. Aikido All-In-One Octal Heater Troubles
  70. Guitar tube amp OT Calculation/Winding HELP!
  71. transimpedance amplifier
  72. Jaehong Lee OTL
  73. What tube bases to support for a new tube curve tracer
  74. 6GE5 in driver service for class B P-P
  75. Replace Electrolytics?
  76. Can OT's couple?
  77. tube solid state hybrid guitar amp, looking for schematic
  78. before i drill Simple SE Chassis Seperation of input and output
  79. gates m-3638 preamp
  80. Oversized caps (PS and coupling) in RH84: Problem?
  81. What makes a great concertina triode?
  82. Luxman SQ5A
  83. Spice model with grid current 12ax7
  84. converting a magnavox pp 6v6 in triode mode
  85. 3-leaded russian PIO caps
  86. 6V6 filaments in series
  87. my loud valve preamp
  88. Tranformer for Chinese pre amp (6N11) ?
  89. 1 watt desk speaker
  90. PE06/40 replacement
  91. Salvaged console tube reciever
  92. EF86 swap for 6BQ5 reverb?
  93. Yaqin CD3 Impressions and Internals
  94. svetlana 6D22S heater issues/question
  95. Unity-Gain EL84 Push-Pull Power Buffer
  96. Tube rectifier input capacitance
  97. Borbely hybrid Tube-MOSFET opamp
  98. Help! Tube Rolling
  99. Articles on Global Feedback
  100. Symetrical out low Zout
  101. Any Rimlock PCB sockets out there?
  102. 12SN7 Round Plate Tung Sol--is there such a thing?
  103. Vintage 2a3 tube amp
  104. Balance in CCS Long Tailed Pairs
  105. Audioromy 813 Mains Transformer
  106. Hello all, Im new from Spain, sorry for my english, and problems with my music angel
  107. use 120V x 2 for Aikido octal transformer?
  108. P-P O/P Trafo with only 2 tubes insead of 4?
  109. Eico HF-87 refurb
  110. Which SS CCS for the plate load on a 6N1P?
  111. Um, Can I do this?
  112. Eico power supply trouble (hlp plz)
  113. TV live regulator to tube preamp
  114. How to Spec Headphone output transformers
  115. Can I enlarge the mounting hole on Mosfet?
  116. Meng Yue 6P1
  117. Finding triode curves
  118. Critique my schematic 12ay7 linestage
  119. Suppresor Grid used for Feedback?
  120. Power Cascode
  121. Audio grade components
  122. Line Voltage with Yaqin MC-100B amp
  123. heater warmup and b+ delay
  124. BAL to UNBAL DAC buffer
  125. Counterpoint SA-7 - need a pic of the inside
  126. Are Chinese 6N2 the same as Russian 6N2P?
  127. New project; Musical Machine
  128. 4D32 SE amp, a few more questions
  129. Static shock with simple se
  130. Old electrolytic caps ok? MOSCODE 600
  131. Transformer Flux Band Tips and Tricks?
  132. What tube config will get this sound?
  133. On cleaning transformers
  134. My first project ELEKIT TU-870R
  135. DC7 MkII :New Schade 6080 amp.
  136. current driver tube amplifier
  137. A DC coupled headphones amp
  138. Ebay trader zhangsheng
  139. decware kits worth it?
  140. Simple test for transformer frequency response?
  141. Modular guitar tube amp power supply - interface concerns
  142. Vacuum Tube Voltmeters
  143. Power Trans. Load Test
  144. Replacing Cap Across Filter Cap
  145. Regulate HV preamp with floating LM317?
  146. Rogers cadet 3
  147. AC15 Heritage Project w/ Sound Clips
  148. Output impedance tap considerations.....
  149. Amp switch safety load
  150. MF X-10D replica problem
  151. Nice triode
  152. Low gain preamplifier
  153. Improving a Maple Tree Audio PS 2 power supply
  154. Baby Huey-ish phono?
  155. New? Local Feedback Method
  156. PSUD Help Needed: What value do I enter for current?
  157. Question on WE310
  158. How do you calculate choke size in a power supply?
  159. tubecad and tubecad se
  160. 300B amp Power Supply
  161. Adjustable internal Resonance?
  162. B+ Voltage sag for AB1 PP
  163. Maplin
  164. Preamp with an integrated amp
  165. First "boot" in 15 years
  166. Inherited these tubes. Anything interesting?
  167. What application for this tube?
  168. tantalum cap
  169. do I need to upgrade my heater supply to add another tube?
  170. Anyone have curves for a 2C52?
  171. tube-amplifier-shaped-usb-speaker
  172. pre-amp tubes: matching and care
  173. How to self taught about building tube amplifiers
  174. Any pretty good/bad chinese amps?
  175. Couple idiot questions....
  176. Looking for the triode mode of Z759
  177. Couple idiot questions....
  178. push pull 45
  179. Video of hum noise when I switch on the reverb of my Twin Amp
  180. 6sj7 spice model
  181. Help finding parallel 45 SE schematic
  182. filling in the low end, 6bq5 12ax7 circuitry
  183. Dynaco Mark VI
  184. Looking for Sonic Frontiers SFS80 Schematic
  185. CCS or V.REG for OP anode
  186. Yarland FV 34CIII
  187. Looking for OPT steel covers
  188. Damper diodes, center tapped heater, B+
  189. Dynaco ST-35 Newbie cathodyne question
  190. Anyone have valve/tube libraries for express PCB or PCB123?
  191. Looking for the Ultimate Aikido.
  192. CCS loaded DHT cathode follower?
  193. Phono stage with LT1028 MC input
  194. New valve int flash over why ?
  195. Sweep tube suggestions
  196. Amp project output problem
  197. 12AX7,6BQ5 PP Amp Search.
  198. Dynaco MkIII preamp/linestage recommendations?
  199. Can someone please check my PCB layout for this preamp?
  200. looking for easy, low cost guitar amp project
  201. UK EBAY - 100W Marshall / Fender Clone Transformer Set
  202. 1KW power - what do you think?
  203. Bottlehead Filament Choke FC-1 for Push-Pull?
  204. Home James! But first, which transformer?
  205. NAD preamp = 6BQ5 Frankenschteen
  206. Wintersweet highvividity driver circuit
  207. Looking for TT11(CV1501) triode mode curve
  208. Amp switching with 4093/4066. How to add indicator LEDs?
  209. Yaqin MC-10L Blown Fuse
  210. 2a3 amp, progress picture
  211. How do I implement an AZ1 rec tube???
  212. Profit margin on used tube amps
  213. 300B sockets (different question)
  214. How can I modify this grommes little jewel amp for guitar.
  215. tri-amping question (s)
  216. Unity coupled power stage
  217. Acquired A Bunch Of Tubes
  218. Understanding load lines
  219. what would happen if.........?
  220. Testing valves/tubes
  221. 300b socket
  222. Vertical vs. Horizontal does it matter?
  223. Layout thoughts hmm....
  224. ID request, is this a pre?
  225. Anyone got any info on the Tippatone 500 watt amps?
  226. SMPS for Filaments?
  227. Using 6n6pi Push and Pull
  228. Optimum Tube Temperature
  229. Chassis
  230. 5670
  231. will this spice works in real word?
  232. An amplifier for Burning Man
  233. 12AT7,12AU7 Ultra linear cascode
  234. El Cheapo Grande
  235. EL84 Unused pins safe to connect?
  236. 6BQ5/EL84 tube buffer questions
  237. How much power do I need?
  238. Tube buffer/preamp. Where to place voltage divider?
  239. Schematic wanted for VTL Preamp "Maximal"
  240. modified GEC 88-50
  241. Zenith 7B31 Help
  242. Do swingers always buzz when they swing?
  243. 6at6 tube? What can i use it for?
  244. Sovtek 6550WA?
  245. how to make a tube gyrator eq?
  246. Transformer needed or "solid state guy needs help from tube guys"
  247. Differential input, SET output
  248. FFT of PSUD2 output?
  249. Differential push-pull design question
  250. Any EF184 users?

Content Relevant URLs by vBSEO 3.3.2