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

  1. My latest Project (nightmare)
  2. output transformer primary imp. calculation
  3. rogers cadet mk3 hummm.....
  4. Someone help: SE shematic with GK71?
  5. Calling Graham Ingle of black cat electronics
  6. Old Emerson Tube Radio... great find!
  7. Fender princeton/champ clone
  8. E810F in triode
  9. GZ37 replacement?
  10. Bias adjustment question
  11. 6W Self Inverting 6BQ5 Amp
  12. Inductance a problem with wirewound pots?
  13. Fun circuit with a 12ax7 (ecc83)
  14. want to do PP-GM70
  15. spraying the guts of my amp...
  16. How to drop 10v from mains for 300b amp.
  17. SE Output Primary Impedence
  18. Different input valves for KT88
  19. EL84/6BQ5 LUXMAN Amps
  20. Heresy? Replacing tube rectifier w/Weber Copper Cap
  21. Direct Coupled Choke-assisted Mu-stage
  22. Another 845 SE
  23. Is it possible - 6922 Active X-over running with ~ +/- 40V ?
  24. 12FQ8's ?
  25. my first tube site
  26. different measurements
  27. DIY Dyna MK 2's and using bottlehead C4S
  28. Elektor ECL86 RIAA Preamp
  29. ECC88 - upgrading from Teonex - Help ?
  30. B+ problem?
  31. Realistic SAF 24c - Need some help
  32. what is the cap
  33. EAR 509 Mkii manual
  34. Where do you draw the line between tube and sand?
  35. Shinrock transformers
  36. OT: Anybody having problems getting to AA ? nt
  37. how much above B+ will voltage swing in OPT?
  38. bias meter and pot lead length
  39. 211 biasing voltages preferances
  40. Definitely NOT a Loftin-White!!
  41. Val MP 211 info wanted
  42. Look for EL33 PP structure circuit
  43. Rodding Bogen CHB-10A Mono Blocks
  44. two value tube amps for active DIY horns
  45. GEC 912+
  46. soon available as wrist watch.....
  47. Low sensitivity speakers and valvs, no nfb?
  48. Has anyone built this amp?
  49. Difference bewteen ultralinear & triode mode?
  50. 7586 nuvistor
  51. Valve Identification-Help
  52. KT 88 schematic search
  53. Bias the new power tube
  54. 6M6G Structure of the circuit
  55. I Think I Saw Heaven !
  56. Tron Syren
  57. extremely low output
  58. project suggestion with spare trans
  59. cinema amps
  60. c3g producing sparks
  61. Where to get transformer parts?
  62. penta labs
  63. Dynaco ST70 clone
  64. anyone tried the diy paradise simple el84 pp
  65. compression?
  66. 100V trannies as valve OPT
  67. 6bm8 / Ecl82 Pse & Srpp
  68. Lowther LL26 restoration
  69. Can I trust my Valve Tester
  70. (RCA) 6SN7 GTC spec?
  71. re: need help on Counterpoint SA5.1 preamp
  72. Why no CCS in PP output stage?
  73. 811-A amp
  74. DYNACO 120W AMP for DYNA A-451
  75. 35watts el34 amp schematic search ?
  76. tube
  77. My first design. PSE 211 to review.
  78. new 832 tubes?
  79. How to test a tube
  80. 50V line trafos for tube O/P?
  81. Distortion analysis mu follower
  82. the general radio experimenter
  83. resistor value, please
  84. PL519 PP design
  85. Dealers for output irons in EU wanted
  86. Any Twin Power triode Noval type?
  87. ARC SP9 Preamp voltages
  88. Power transformer
  89. OTL for Raven R2
  90. passive preamp (autoformer)
  91. How fragile are Sylvania 10Y tubes?
  92. SE 6SN7/813 direct coupling
  93. Riken Ohm Vs Kiwame
  94. Advantage of Valve Preamp?
  95. SiC Schottky rectifiers.
  96. 30 W from 6c33b?
  97. Built-in bleeder in ASC?
  98. 833 and GU-48
  99. Safety with high volts: 101
  100. Kofi Annan in: "B+... PLUS!!!"
  101. searching for darling tubes.
  102. Audio Research LS8 scheme
  103. My new pp KT88 design
  104. Tubepreamp and Zappulse?
  105. Comments on Transcendent Sound products
  106. regaring 833se
  107. Asc Oil Capacitors
  108. Buy Tubes
  109. Placement of power amp imput resistor
  110. Brimar EL34
  111. Elekit TU-870
  112. Tube amplifier mods
  113. Stromberg-Carlson project
  114. How to design the straight load line for choke loaded tube ?
  115. OPT failure modes
  116. Life of tubes - what to expect?
  117. Profiteering from Gordan Rankin Designs
  118. Gain/Schematic Question
  119. Heath Distortion Measurement Set HD-1
  120. Tube troubleshooting question
  121. Speaker tube amp with headphones
  122. Gain of 6AK5
  123. R vs. RC on secondaries
  124. My simple 5010 amplifiers
  125. constant current sources...
  126. Critical resistors
  127. Digital tube designs?
  128. 2A3 SE Amp
  129. Dact closeout
  130. Mysterious runaway output tube
  131. Ampex 351 Power Transformer
  132. better the Pass camp?
  133. My first tube amp kit.
  134. Plate Resistor
  135. EZ81 tube rectifier
  136. 4K:10K interstage
  137. DIY in New York City
  138. can I tone control the Peavey Classic 60/60
  139. dead project, new life?
  140. Guitar overdriven preamp schematics?
  141. Interesting Read On 300B's
  142. Low voltage tubes
  143. Perser SA20 Restoration
  144. IP headroom with LTP splitter
  145. Triode strapping 6l6gc PP
  146. Question on design
  147. Peavey Classic 60/60 bias mod advice
  148. pin outs on Hammond tube amp?
  149. cathode follower
  150. Positive feedback online issue #16
  151. el84 help
  152. RIAA help
  153. Advise for my first tube amplifier, please
  154. My 50/10Y amp with hybrid PSU... am I doing the standby switch right?
  155. What can I build with this iron?
  156. Hey Planet_10 (and others)
  157. Tube sockets for Harmon-K Citation II
  158. Seeking a source for Mundorf M-caps.
  159. Question on ZZ-1000/8228
  160. noise analysis
  161. Using latching signal relay in SE guitar amp.
  162. Help wanted with fixing french DRG valve preamp....
  163. How hot are they supposed to get?
  164. EF86 Triode Mode
  165. Using a 6SL7 in a tube overdrive pedal instead of 12AX7?
  166. Guitar Amp Question!!!!! Adding Film Cap?
  167. naive questions
  168. Rozenblits Grounded grid preamp layout
  169. Help extend the life of my 805's
  170. Difference between 5687, 5687WA and 5687WB tubes?
  171. The first tube "integrated circuit" (1926)
  172. Fix loose connection in base with solder pot?
  173. 91a 300b conversion to 2a3
  174. Adams Amp Discussion, please help! :)
  175. Had a bad accident with my TT21 today.
  176. Different sound for CD Tube Player
  177. Tube audio transformer
  178. Hybrid Srpp
  179. "it is just SO hard to get bad sound from EL84 PP amp"
  180. Wire types??
  181. triode vs. pentode for pp output.
  182. 6GK5 vs. EC95/6ER5
  183. 25BQ6GTB?? Any Good?
  184. do pp output tubes have to be matched?
  185. Ampex 600 pre
  186. line-stage preamp tubes? which ones to use...
  187. Another timekiller project
  188. 6sn7GT
  189. problem with EL84 PP amp
  190. a speaker whose load varies too much for an OTL
  191. Mystery manufacturer/distributor
  192. 37s Anyone?
  193. sv811-10 push pull
  194. 416B dangerous tube?
  195. blew my amp because of distortion pedal
  196. Help with Tube Phono Output Impedance
  197. Minimum current for choke operation
  198. stored energy in output transformer?
  199. socket mounting depth
  200. Parafeeding a push pull
  201. Different direct heating styles?
  202. The most simple tube preamp
  203. Sample/hold DC servo circuit
  204. Interstage transformer as OPT?
  205. What can you do with cheap 1kV power?
  206. Marshall Super Lead MkII
  207. Flashing Rectifier Tube- Bad Thing?
  208. Amp for my speakers, PLEASE Help
  209. suitable preamp for a tube amp (kt88+12ax7)
  210. anyone know of a kit to make tube night light?
  211. Sprague capasitor id
  212. Question on Tango XE-20S
  213. 6SL7 diff pair - how to set up????
  214. Hwat should be the best driver for a 520V2 ?
  215. problem: half power on push-pull ?
  216. Screen voltage - standby cut (Roland Bolt 60)
  217. Triode Dick/FdeGrove 2A3 PP amplifier
  218. PSU for perusal
  219. Kt66 Gec Replica
  220. 6as7
  221. Please confirm my transformer math.
  222. Anything wrong with this design?
  223. Buffer Line Pre-Amp Power Tx
  224. Why filter in tube DAC?
  225. advances in tube amp design?
  226. How to determine grid leak current?
  227. dissimilar triode for White cathode follower?
  228. tube rectifier
  229. 6Vdc from 6,3Vac
  230. Computer Grade Cap or Inverter Grade Cap???
  231. Peculiar Sovtek EL34 bevaviour
  232. 5AS4 sub for 5U4
  233. Preamp hum again
  234. Modifying amp to accept different tubes (Newbie alert!)
  235. Quetion for Thorsten
  236. OPT axis
  237. Schematic Counterpoint SA3.1 and SA-9
  238. optimizing constant current heater supply
  239. Valve Art KT100
  240. baxandall tone control
  241. Kofi Annan in: "Brownin' Out!"
  242. strange tube
  243. Monarch SA-30 Schematic
  244. Power Supply for 300B Monoblock
  245. Matisse Line Amp
  246. Panel mounting on a woode case
  247. Hardware??
  248. another way to turn a pentode or tetrode into a triode
  249. 0Z4 as a rectifier?
  250. Unused HV windings on power transformer

Content Relevant URLs by vBSEO 3.3.2