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

  1. Aikido preamp transformer question
  2. 40's tube receiver question
  3. W5m transformer
  4. Dual voltage PS filtering.
  5. OD3 150V tube regulator
  6. Fisher 500c
  7. Help with quad cap upgrade
  8. low voltage hybrid power amplifier
  9. Which IR LED?
  10. Tube Frequency Response
  11. Big B+ voltage drop using diode rectifier.
  12. Triode ST70 kit schematic?
  13. 6AU6 replacement
  14. IT in cathode for driver class A2 tube
  15. Bogen MX30 Output Transformers
  16. Worlds Most Expensive Tube Amp !!!
  17. Blown screen resistor
  18. To ground plane or not?
  19. 5Z4PA Alternative?
  20. Question about chassis ground
  21. 6337- wtf is it?
  22. need ideers for a 6 channel amp
  23. sv572 transformer headache
  24. 6C33C / 6EM7
  25. 6146 TUBES ?
  26. Impedance matching
  27. QRP03 - Tube Buffered Gainclone
  28. Amp Cage Fababricators?
  29. PP KT88, Need help!
  30. Question regarding rectifier tube replacement
  31. Harmon Kardon A500
  32. Double triode 6SN7
  33. Tank's DIY tube preamp
  34. C core OPT for PP EL84
  35. amp diagram for KT88 and 300B on the same circuit
  36. Yaqin MS 34 D
  37. Tube buffer for amplifier with LM1875
  38. What is the best ?
  39. DUKANE tube PA help
  40. Old tube? HELP RSE NP-7V-12 168810
  41. My first tube power amp
  42. Another mystery tube:
  43. Quad 22 Wiring
  44. Radford phase splitter again
  45. hookup wire source
  46. MCU adjustable fixed bias
  47. vr tube / glow tube as filter?
  48. Using phono stage only of preamp
  49. Decca Portable Record Player model DPS8 Filter cap replacment
  50. 6V6 vs EL84 for output
  51. Realistic HK 210/Acrosound Stereo 120 Amp Schmatic/Manual Needed
  52. 2A3 with 12AT7
  53. Voltage rating of plate gyrator MOSFET
  54. Quad22 like preamplifier kit
  55. Push-pull implemented with KT88
  56. My QUAD 2 Restoration
  57. DIY High Power Car Tube Amp
  58. Perished insulation on transformer secondary - seems shorted. What can I do here?
  59. Need advice and help with new build
  60. Suggestions for a cheap Stereo Phono tube preamp based upon this power transformer?
  61. Determining imput impedence of a preamp line stage
  62. Newb question on 12AU7 gain stage
  63. Valve Preamplifier Help
  64. OPT choices - 6L6 PPP
  65. MESA STRATEGY 400
  66. Shuguang, Beijing or Shanghai EL84 ?
  67. CJ PV-5 tubes
  68. Reference tube amp kit, <20 watts for under $1,000?
  69. ccs power supply 310a
  70. At what point does it become a "hybrid" ?
  71. Line filters
  72. Step-up MC transformer for Audio Research SP 6C
  73. Psud help.
  74. MC Step-Up OTL Stage (grounded-grid) for MM RIAA Head Amps
  75. Repurposing heathkit s-2 electronic switch
  76. output cap bypass?
  77. 6e5p & 6c41 tube amplifier
  78. Looking for my first tube amp...
  79. Acceptable variance in plate voltage?
  80. SRPP bias calculation
  81. 6A3 test, what am I doing wrong?
  82. Goldline Phono Tube Pre Amp PCB - Analog Metric
  83. New Copper Nanoparticle Solder - Breakthrough?
  84. SRPP as a final stage? What do you think?
  85. Troughline Transmissionline theory explanation needed
  86. Help with odd bias method on Crown tube amp
  87. preamp output impedance matching
  88. KT66 Woes
  89. Cascode driver
  90. 2a3 DC coupled
  91. ECF/PCF 200, 201 B10B 10Pin Tubes
  92. Homemade EL84 Push-Pull amp doesn't work
  93. Tamradio Transformer
  94. Variable HF oscilator
  95. eico st70 dimming house lights and slowing turntable`
  96. Amplifier Calculators
  97. Are any of these tubes useful for audio
  98. Modifying a J Sound Lab 2A3 amplifier
  99. Experimentation - Power transformer as output
  100. Mullard with ECC99 Phase Splitter
  101. Killed an Edcor OPT. How?
  102. If it ain't broke....
  103. Silly DHT question VaMax
  104. Recommendations for preamps with PCC88
  105. 6h23n same as 6n23p
  106. Mighty Midget Amplifier and speaker requirements.
  107. Bias Supply protection
  108. Tube Amp Schematics
  109. POWER TRANSFORMER IDENTIFICATION NEEDED "26R90"
  110. 6sn7 driving Push Pull Parallel kt88's?
  111. help with an old Peak ST-100 - single ended 6GW8
  112. Designing an 801 SET Class A2 Amp
  113. Grid choke considerations for 300b
  114. SE poweramp with best bass performance
  115. 45 Tube IN SET Amp
  116. what will happen?
  117. ECL86 PP Amp - Very low frequency clicking
  118. motor run cap question
  119. Power Switch/Indicator Lamp Mod to S-5 Electronics K-501
  120. EL34 SET With No Driver Tube?
  121. Filter capacitors - motor run?
  122. Microwave transformers
  123. Capacitors in the cathode of preamp tubes
  124. How Many Tubes to a Rackspace?
  125. selenium diodes
  126. Is it possible to Oversize an SE OPT?
  127. questions about my ecc83 phono pre build
  128. PSU resistor temperature
  129. QE08-200
  130. Adding heater transformer to my 6b4g amp. help a noob please.
  131. Bogen CHB-35a Troubleshooting: Distortion, Power Tubes Very Hot
  132. Big Cap in luxman MB3045
  133. Question about 4x12 cabinet wiring
  134. What happened to Sakuma-san's website ?
  135. Should I ???
  136. Can you classify condition of tubes?
  137. ecc99 preamp into an amp
  138. AI 500 Volume pot advice wanted.
  139. eico st70 input impedance question
  140. Tube Preamp or Power Amp?
  141. pmillett "Engineer's Amplifier" to mono?
  142. Advice/schematics wanted for HF-81 opt project
  143. valve upgrade
  144. has anyone known about Ming Da amplifiers
  145. A nice little valve amplifier
  146. Use rectifier winding for 6.3V DC heater?
  147. Voltage Regulators Zener / Gas Reg
  148. Looking for first tube amp kit.
  149. UK input voltage question
  150. 1sh29b
  151. 6G2 amp - volume and tone play up on one input only
  152. One channel grainy sound
  153. anybody know 6BY5 plate resistance ?
  154. SE 6550
  155. Yaqin MC-100b Volume pot
  156. Pair of possible MC step ups - octal mount
  157. My Mighty Midget
  158. Conrad Johnson MV75 "update circuit drawing"
  159. Cheap Red LED bias on ecc83/12ax7
  160. stoneAmp
  161. Project thread: KT88 PP amp
  162. I need the voltages or schematic for a Magnavox 177.55 amp
  163. Different PSE output designs - which to use?
  164. Toroidal (adding a winding)
  165. Kondo Souga - audition
  166. a incar tube/valve line driver
  167. Before I punch the holes.. A quartet of EL84?
  168. Tubes Home Theater 4+1
  169. DAC direct out, not enough gain, help me build a driving stage.
  170. ultra linear aikido with linearizing pentode
  171. Scott 299
  172. OPTs With Multiple Secondaries
  173. Over Four Tons Of Tubes
  174. L channel lower output?
  175. 16LS Amp by S5 Electronics Questions
  176. Heathkit WM-5
  177. 6BL8 not on roll chart
  178. CJ PV-5 PS rebuild
  179. Attenuator for passive pre (LEAK ST 20)
  180. Help ID tubes Plz
  181. Data sheet and load line question
  182. Trouble with Silver to Black face twin mod.
  183. Grommes S35 booster amp output?
  184. dc filament heater - high impedance const. voltage
  185. Schematic for Modwright SWL 9.0se Preamp
  186. GZ37 substitutes
  187. output attenuation
  188. My humming home made tube amp
  189. Shared Cathodes 300b
  190. Bogen CHB-35 for Music...
  191. correctly connecting PT for 110/220 volts
  192. voltage divider
  193. "Bypass caps" and their effect on perceived sound
  194. Repair of Cayin HA-2 Tube Headphone Amp
  195. Best Drive for EL34
  196. Needing Schematic for Grommes LJ7 please.
  197. 6550C v. KT88
  198. ECC81 MU-Follower consumption
  199. Locating hum source
  200. c3g self oscillation problem - a newbie needs help!
  201. Voice of music console help
  202. One tube radio
  203. Triodes with better "look&feel"
  204. HV Supply
  205. Will this arrangement impact the input impedence of the cathode follower?
  206. Measuring preamp output impedance
  207. Capacitor from 120VAC to ground
  208. I have power but no sound???
  209. Using a function generator with a tube amp?
  210. What resistors to use on KT88s tubes?
  211. Opinions on Raysonic sp-200 + Raysonic 168 CD
  212. Lab power supply for testing tubes
  213. Could really use some help here!
  214. Help~ GU50 ?
  215. Some Power Supply Help
  216. newbies beware of lampizator srpp pdf
  217. Headphone output
  218. Has anyone played around with this as an amp front end?
  219. Help for Dynavox VR-70E
  220. Heathkit TT-1 (testing a 199, 99 tube)
  221. Tube And Transformer I/V Converter For Differential Current DAC
  222. Volume increases as amp warms up
  223. New 6V6 Build - Suggestions Needed
  224. Tubes Numbers
  225. VTL
  226. Visit to KR audio Prague 20120921
  227. Where did he posted it?
  228. Problems with PT325.2i
  229. What phono preamp with Dynaco MKIII
  230. opinions on supporting a past sale/trade deal
  231. Series connection of regulator tubes
  232. Preamp buzzes when volume is at zero?
  233. Hrrrrmphhhff. PSU design error and how to cope with it
  234. 300B fixed bias specs
  235. Battery filament for 4P1L
  236. Need pro help with this tube amp.
  237. Need help with UTC transformer
  238. Very interesting 300b design
  239. How to understand the power output in this case?
  240. K12G Help
  241. all dht se PX4
  242. multiple output transformers per channel
  243. What would you change in this schematic? (PP amp)
  244. Anyone know where to get this type of breadboard?
  245. moscode 600 tube recommendations
  246. Should I use two separate OPTs for parallel output tubes?
  247. custom Tube chassis vendor
  248. VLS631 Thermal Delay
  249. 6au6 preamp stage
  250. Recognize this tubes...

Content Relevant URLs by vBSEO 3.3.2