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

  1. 6J5 (Metal Tubes) ....something goes around inside
  2. common-mode chokes
  3. EL-34 and 100k pot
  4. Scott 299 (late) OPT's
  5. Tube magazines
  6. PP plate-choke?
  7. More Phase Splitting Questions
  8. Concertina sanity check
  9. Transformer Specs
  10. The Aikido or Moskido??
  11. KT88 PP suggestion
  12. Ultrapath line amp
  13. Gross loudspeaker cone movement when using tube amps.
  14. Pre-amp power iron advice??
  15. Class A 8417 Amp
  16. DHT output tubes and DC heating
  17. rock music and SE?
  18. Disadvantages of using Zobel and Series notch filter ?
  19. old days source
  20. Mu-follower vs common cathode w/- active load
  21. K40 or K42 Russian PIO: what would you use/recommend?
  22. CCS turning off prematurely?
  23. ESL amp again!
  24. calling Moray James, and others ..wav8 or 6BM8 schemtics--PP.
  25. Does anyone know the output transformer specs of the...
  26. SE EL84 project for my friend
  27. SE amplifier - How much power?
  28. what speakers do you use?
  29. A Tube amp for a Hostille Tube Enviornment
  30. practical choice for an amp
  31. Simple cathode CCS
  32. 2A3s in push pull; class A
  33. 5 VDC heater question
  34. Power transformer snerring.
  35. Subminiature Tube & Tripath Hybrid Integrated
  36. 211
  37. Which of these output tubes?
  38. High Voltage Heater info
  39. 6SL7 in place of a 12AX7?
  40. DHT Tubes
  41. Driving 6AQ5's
  42. schematic wanted
  43. 807s replacing 6L6GCs
  44. Shielded vs twisted pair in internal wiring
  45. tube basics: computing mu and transconductance
  46. Aluminium vs steel chassis
  47. Etf06 & 07
  48. FU 13 tubes
  49. Good Souinding Direct Replacement For 325 / OP 37
  50. how to wire 6.3VDC heater on a heater with center tap (12.6V series, 6.3V parallel)?
  51. The Russian 5U4M is a 5AR4 equivalent ?
  52. WE427A Cold Cathode Diode
  53. reversing polarity in regulated B+ and other question
  54. Anthem Integrated 1
  55. Advice/Help - Cap upgrade
  56. question on old tube sockets
  57. fisher sa-16 very red tube and?
  58. pros/cons of a 845 VS 211
  59. Preamp Power and Voltage Output
  60. Anyone seen these 6L6GCs before?
  61. online transformer info for newbies
  62. High voltage pseudo-triode
  63. Yes, again: mains-powered KILLER amp without a power transformer.
  64. Quicksilver 300b monoblock (KT88 conversion)
  65. Output transformer (SE) - DIY
  66. is Gary Pimm still around?
  67. carbon composition - 2 types
  68. Input attenuation on Leak amp
  69. 101D Sockets
  70. PC86, '88 RF Amplifiers
  71. Jolida SJ-302A tube swap
  72. Inductance for tweeter OPT
  73. Help me.......What is the 6SN7 ???????
  74. high DCR secondary (power transformer)
  75. Transformer power formula Help???
  76. 2A3 OTL 800 Ohm Speaker
  77. Trying to find specs on transformer core material
  78. 12AX7 suggestions?
  79. power supply (cap input)
  80. is it safe to connect these secondaries in series?
  81. Peter Millett's Uniamp with KT88
  82. Mystery transformer
  83. Can I phase split like this?
  84. How to model psud2 using tube regulator?
  85. Choke-loaded 6C33C stage
  86. EL84 as both driver and output stage.
  87. Silvertone (Sears) stereo amp
  88. Chasing hum in a new tube amp
  89. Zenith K731 AM/FM radio audio random cracking sound in FM mode
  90. 6bx7gt Se Amp
  91. Beard P100 Bias Lights
  92. Metasonix TS-21 modulator
  93. help with diyparadiso schematics
  94. electrostatic shield - nice to have or recommended or doesn't matter?
  95. Simple method for 240V from 240V line
  96. Audiophile bibliophilia nervosa
  97. Help with amp layout
  98. Why triode Mk3 is louder than stock Mk3
  99. Seduction or Cornet for phono???
  100. Please review my 6AQ5 Amp
  101. 832A PP Amp LTP
  102. Checklist to observe before applying the mains
  103. C3g driving 2a3: Triode or pentode?
  104. psud2 question and Fi Primer's 211 circuit
  105. Jolida JD-301A & Jadis DPL
  106. Headphones with a Tube Amp
  107. 6S3B-V Wire-Ended Single-Triode tube
  108. Anode stoppers
  109. Weird Quad II mains transformer help
  110. Mullard 5-20 parts list
  111. has anyone DIYed a Citation 2?
  112. Bogen/plexi conversion question
  113. Matched pair - different brands
  114. ERIC Mod 3460P Restore
  115. PV12 Preamplifier
  116. Grandma's old Capitol Console
  117. Music Angel
  118. What is the version of 45
  119. Heathkit potted power transformer question
  120. Thermionic Cooling?
  121. What have the finest sound, the PX4 or the 45 ?
  122. value of a cap between driver tube and output tubes
  123. do matched pair (or maybe a quad) output tubes "aged" at the same rate?
  124. Mini EL84 Amp Done
  125. Overcoming Miller
  126. Heathkit Schematic model AA-50 needed
  127. Help me choose please
  128. Mono Class A SE Schematics
  129. Irish DIY Meet.
  130. Sizing PP OPT
  131. Do SE transfomers get hot?
  132. Aikido Questions
  133. LTP with interstage trafo
  134. 6BQ5 Push-Pull amplifier
  135. Amplifier input
  136. C#@$ quality 6L6EH's
  137. Mains toroids appear to be great for audio
  138. High bias point.
  139. ebay amp
  140. GU 50 output modification
  141. 6C41Cs Class-A PP
  142. My First Big Amp
  143. sv572-10
  144. Stupid PAS-2 Pot Questions
  145. Old electronics articles
  146. UL Feedback
  147. who know fd23 and fd422 tubes?
  148. Laptop amplifier
  149. Thoughts Of Modifying My First Tube Amp.
  150. Quick question for Eli Duttman (or others!)
  151. Blackened GZ32 glass envelopes
  152. Are these vintage vacuum tubes suitable.....
  153. Tube XP8109-02?!
  154. peak current 300B heater with start up
  155. Microphonic phono preamplifier
  156. Pentode Plate Load
  157. what monoblocks to build?
  158. All tube direct box
  159. max b+ for 6V6
  160. What speakers to go with tubes ??
  161. Bluenote Koala Tube CD Player
  162. OPTs and power for bi-amping
  163. Old Diodes
  164. Father, I abused my Leak S/20
  165. 6688/E180F line stage?
  166. Variable feedback to enhance damping factor at low frequency
  167. Need assistance with picking the right Edcor audio transformer
  168. Critique my first design
  169. Biamping, phase of output?
  170. Ground star
  171. op-points for 27 pre...?
  172. Opinions/Experience of Toroidal valve amps
  173. hum, no way to get rid of it
  174. How to adjust my circuit for frequency response?
  175. Input Tubes?
  176. 6BG6 = 6L6GC with top cap - cheap!
  177. Maida Regulators Redux
  178. ground of DC bias supply
  179. does anyone the website for yaqin/mr. liung/music angel amps?
  180. plate load ccs ala gary p question
  181. Books for newbe
  182. 6AS7 OTL
  183. n00b phono preamp troubleshooting..
  184. any example of SE designs using GM70?
  185. Shunt regulator question
  186. Any RH807 builders?
  187. Recycle an Eico HFT-90 for a preamp
  188. EL84 PP output transformer for 6L6 PP class A
  189. toroid psu, weird results...
  190. Squeaky Noise in ARC Dual 75
  191. EL84 mod questions
  192. Measuring DC at preamp output
  193. Is Northern Electric the NEW W.E.?
  194. Burnt Woodside STA35 valve amp... Help!
  195. My tube preamplifier project
  196. Ponderings on hybrid 300B
  197. Maida Regulator Parts
  198. anyone familiar with the 211/vt4c circuit from Fi Primer?
  199. Calculating operating points of two DC stages
  200. Advice for retubing VTL Ichiban`s
  201. Need help
  202. Art Audio Kit on Common Ground Magazine
  203. Advice for retubing VTL Ichiban`s
  204. fisher 800c intermitant hum
  205. calling Yves....
  206. X10 Pre
  207. NEW KT66 - 6AU6 single ended
  208. mechanical hum
  209. Big valve preamp
  210. Question about biasing heater above cathode in a direct coupled circuit.
  211. center tapped choke inverter
  212. Which One Of These Tube Amps Should I Buy?
  213. Tube Info
  214. Circuit/Equipment Designer
  215. help needed with noise in phono preamp
  216. Pentode driver and IT?
  217. Plate Caps for 832A
  218. 300b advice
  219. Designs on your noob, err, tube
  220. 7788 Triode Curves
  221. EL81/6CJ6 operating point
  222. Separate cathode resistors in push pull output
  223. C3m linestage
  224. Anyone know this 13E1 design...
  225. LTP w/ positive only supply
  226. 6V6 line preamp
  227. The 6P43P russian tube is a EL84 equivalent ??
  228. Ixys IXCP10M45s IC
  229. Help with hybrid mosfet valve amp
  230. Substitute for 6gw8 in Heathkit aa-32
  231. U-Follower: Output from Cathode or Plate?
  232. Getting rid of oscillations in the preamp
  233. has anyone used the 4-125A in SE amp ?
  234. line preamp using 6SN7 instead of 12AU7
  235. 3-pong conversion for Acoustic amplifier
  236. 6v6pp design
  237. CCS Plate Load
  238. All tube voltage doubler
  239. best value/performance ECC83 on market
  240. Help needed for my preamp
  241. 6H6p cascode differential driving 2A3 PP
  242. Best phono / line preamp
  243. Point to Point
  244. gain curve questions
  245. Questions concerning Aikido Line amp
  246. Partial cathode bypass to effect a treble boost.
  247. SE bass
  248. choke orientation
  249. Musical Fidelity X-PRE schematic
  250. Circuitmaker Spice question

Content Relevant URLs by vBSEO 3.3.2