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. DIY something like iMPAMP??
  2. Have you seen this tester?
  3. Help with taming a 12AX7 and 6AQ5a amp
  4. Linear Technology 1083CP adjusting problem
  5. radiation tubes
  6. 813 socket dimensions
  7. Cheap SE output transformers
  8. BIAS and B+ caps WKZ or NH
  9. Cleaning tubes...
  10. Manfred Huber
  11. IEC standards, anywhere?
  12. possible volume and balance control - does this look like it will work well?
  13. EL84 Amp - Baby Huey
  14. 6X4
  15. What do you guys use for HV toggles?
  16. Balanced Operation Output Transformer Questions from N00b
  17. Static stain cleaning
  18. 12AX7 preamp project
  19. SE 1.5W OTL
  20. Cross-coupled NFB for PP Pentode
  21. Parallel triodes - CONS?
  22. output transformer spec questions
  23. Choosing Valve
  24. opinions wanted - Lafayette Stereo 224 Tube Amp
  25. New KT77 Tubes by JJ
  26. 60HL5?
  27. Standby switch
  28. Problems With Simple Gounded Cathode Gain Stage
  29. srpp 6c33c
  30. Mullard 5-20/Maplin 4-20 modification to NON-Ultra Linear mode????
  31. Anyone in gta know their tubes?
  32. 801 low power SE amp
  33. superalloy ( 78% nickel/2%cobalt) EI-66 with Furukawa ultimate wire.
  34. OPT resistance for EL84 PP Class A
  35. Whats in this amplifier?
  36. Whose logo?
  37. pentode phase splitter
  38. Is this EL84M UL PP OK?
  39. Tube preamp question...also, chassis layout
  40. Quad II Mods/Tweeks
  41. Trying to recreate a Fisher SA-16
  42. CCS, how it actually works?
  43. 400V CRC PS, what do I do with it?
  44. Does anyone has MILBERT BAM230 TUBE CAR POWER AMPLIFIER
  45. Valve sockets
  46. Can I use 12AT7?
  47. Music Reference RM5 mkIII
  48. Help: Sun Audio Kits where from? EIFL, ELEX, Sun Audio?
  49. Looking for a link on power supply design
  50. Is feedback required for UL EL84PP?
  51. Someone working on an insane tube project?
  52. Load line frustration
  53. Is 12B4/A good for differential pair?
  54. Heretical Unity Gain line stage PLUS a little gain ?
  55. tube vibration
  56. Small temp voltage on phono input-problem?
  57. What's it all about?
  58. IXYS GaAs Schottky Diodes.
  59. Maplin 4-20
  60. Line preamp using 2 ECC88 per channel
  61. What to use as a nice amp case?
  62. Signal Tube Longevity ?!?
  63. HK 250 power amp tube amp schematic
  64. Need help with connecting OPT.
  65. 6SL7 driving SE EL34 ?
  66. power supply tranny
  67. Output Transformer Background
  68. Schematic
  69. no dc passing the opt
  70. New preamp schematics
  71. Transformer ID & Specs Sheet Help
  72. I Know Some Tube Flavors Are Worth More Than Others...
  73. Why hybrid CCS?
  74. Best cap to cathode tube bypass is ..
  75. Cheap el84 se
  76. Bridge rectifier with capacitors???
  77. 4 volt (dc?) heater from 6.3v
  78. Does anyone recognise this valve amp
  79. PS Capacitor Voltage Rating
  80. Which 6SN7 preamp should I build?
  81. Help on upgrading my Tube Preamp
  82. looking for a non-copyrighted preamp schematic
  83. Problems with cathodyne
  84. more gain needed -> how?
  85. OT: Tribute to Kondo-San
  86. PCL82 SE Tube Amplifier Kit
  87. Rectifier voltage difference, Why?
  88. partial feedback stuff
  89. replace 5y3
  90. Sparking Tubes!
  91. Transformer End Bells
  92. DHT Ultrapath Linestage schematic help
  93. Who manufactured are these EL34's?
  94. Tubes and RoHS compliance?
  95. What do you think about this tube preamp?
  96. What's Ra?
  97. Screen grid resistors
  98. Miller compensation - pros/cons?
  99. G. Kaufman's 6GV8/ECL85 regulated psu
  100. 6CA4/EZ81 heater bias
  101. First stab with PSD for 6CK4 amp-what have I got here?
  102. 81 Rectifier
  103. using 40 VDC supply?
  104. Choke current
  105. Why two diodes per branch on a full wave rectifier?
  106. Alps attenuators
  107. Seeking quality PP pre/mono power project (long)
  108. Transformer location
  109. proper choke placement
  110. 6HE5 as output pentode?
  111. A possible good source for steel chassis
  112. Update on DIY 7591 PP bias cap issue!
  113. 832, can you go SE with these?
  114. PX25 SE without NFB
  115. Change my 8417's Quicksilvers to this?
  116. SE EL84 circuit for bi-amp setup?
  117. CLCLC PSU for 6P14P-EV PP
  118. Shielding a Power Tranny
  119. Unison Research Schema Needed
  120. My 2A3 schematic, comments please.
  121. What happend to the PHOTO GALLERY ?
  122. Valve pre-amp maintenance and purchase
  123. sound of 45 v. 205d v. 2a3 v. 300b for headphones
  124. TPAD Devices Kit
  125. Need Help. Anyone with Philips AG 9016??
  126. Question about input sensitivity?
  127. Any help on sth probably simple?
  128. few questions about my amp, pls come in
  129. 7591 Spice Model ?...Anyone ?... I'm Groveling Over Here !
  130. Need regulated solid state PSU
  131. EC31 - Any Datasheet...?
  132. comments on www.shinrock.com???
  133. need schematic reading help
  134. Sound from dummy load?
  135. Loftin-White
  136. RCA 151 'scope
  137. Coupling cap. values???
  138. stepped attenuator
  139. Ideas for input/driver stage of 300B amp
  140. Schematics for Bogen MXM-A Mixer?
  141. yet another which cap is best for the money question
  142. Lowering the value of the lead resistor
  143. power supply recommendation for EL84 amp
  144. Can ECC40 be used in a phono stage?
  145. Better current source than LM317 on a 12B4 line amp
  146. Bias and max current for my 7591 AB amp...
  147. Making sense of the Aikido calculations?
  148. Computer Grade Capacitors
  149. Pls recommend a power amp to build?
  150. Advice about this 45 amp
  151. Any definitive infor on R-C parafeed out there?
  152. 6AS7 as rectifier tube?
  153. Pre Amps
  154. 12 volt preamp
  155. JE LAB's 2001 2A3 & Preamp???
  156. 12AX7WA
  157. found DIY amp - now what?
  158. Magic Eye spectrum analyzer
  159. Tube Companies
  160. B+ from GZ34 Heater CT ?
  161. Unknown mA on Gardners mains transformer
  162. PSU Question
  163. how to mount rca jacks and volume control in wood enclosure?
  164. Giaime's last nightmare - aka RIAA faceoff
  165. 5687 dc 5687 tube amp need help
  166. Input cap needed
  167. 6BQ5\EL84 line amp
  168. Capacitor Values Why so high? & What can I do?
  169. Bias pot question
  170. What I have: 4 Tubes. What I need...
  171. let me fix this bias
  172. A small no-fuss pentode/pentode SE amp
  173. Bleeder Resistor Placement
  174. Modifying Heathkit AA 151
  175. Interstage transformer for PI.
  176. Motorrun caps ... GND side?
  177. mono center channel out to stereo
  178. Audio Research REF 2 MkII
  179. 717a plate volts
  180. valve preamp criticisms?
  181. LOT of tubes. what can I do?
  182. substitution for 7355
  183. KT88 heaters
  184. Software for drawing tube schematics?
  185. New books posted
  186. Compound bias
  187. Tube Oscillation or Microphonic Question
  188. WTB:OT for el 34 35 watt tube amplifier
  189. Questions on 6H30 simple PF?
  190. "Super Davohm" 1w .1% wirewound
  191. Heathkit AA-100
  192. 6159 for SE Power amp
  193. Do SMPS have a home at high end audio?
  194. Kofi Annan in: "300beee!" or "Kofi Gets a Toy"
  195. cathode capacitance on anode follower
  196. looking for a building shematic for ECLL800
  197. Iron learning.
  198. Tube Amp - Crackling Sound on Left Channel
  199. Pspice preamp simulation
  200. Supply voltage for 12v6 12B4 heaters
  201. New project and my first circuit...
  202. Choke coupled phase invertor
  203. long cable line drive
  204. What To Do?
  205. Simple Method To Measure Source Resistance?
  206. is this true????
  207. query on the PSU of a preamp
  208. Meshplate Help needed
  209. 6072 tube preamplifier.
  210. hybrid rectifiers and PIV rating
  211. transformerless amp help plz ...
  212. Help me build a tube MIC preamp plz
  213. chinese 845 amp blowing fuses
  214. Question about PIV rating of diodes...
  215. Triode strapped heptode?
  216. The Fisher 500C/800C Challenge (long..dialup warning)
  217. 5 wire output transformer
  218. Orcad & tube library
  219. Wall Wart Tube Power
  220. How can I lower B+ of power supply?
  221. How do you put a CCS under a diff. pair of DHTs???
  222. Just need to make sure.
  223. restoring a marantz 7c
  224. What is Simplest and Best 6L6 PP circuit? (PK)
  225. Good DIY Transformer Article (in Thai)
  226. Tube Swapping Question
  227. Toroid choke question
  228. Pentode CCS for parafeed SEP??
  229. subminiature tube suggestion
  230. MQ431 or Triode's DynaClone
  231. Conrad Johnson MV 45 schematic help
  232. signal wiring
  233. NEW B Need Help on Output Tx Problem
  234. center tap of heater winding
  235. Dynaco Mk IV question
  236. Does this tube amp has enough cap
  237. Acrosound TO-330 output transformers
  238. PP transformer for SE use
  239. Holiday Time!
  240. another beginers first amp thread!
  241. Western Electric 374A
  242. Musen to Jikken 03/1997
  243. Please help me make a schematic
  244. Tips for Hakko 936-12
  245. AC or DC for 300b Heaters
  246. Two irons for PSU
  247. Which DHT for Line stage?
  248. Pye Mozart 10 amplifier
  249. I need a simple schematic with 6J1P tubes
  250. First tube project. Need advice.

Content Relevant URLs by vBSEO 3.3.2