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

  1. Best plate voltage for 6dj8 at +-6ma
  2. Max supply voltage for small DHT's
  3. Operating Temperature of KT88?
  4. First Tube Amp
  5. earthing advice on a US amp
  6. distortion at low volume
  7. interstage transformer cheating?
  8. PP EL34 or 6L6 circuits?
  9. Rectifier Capacator (voltage adjust)
  10. Passive RIAA and cap variation
  11. 6T9 push pull with Cathode Coupled input
  12. mixed bias
  13. Need help: tube DAC and Phono pre-amp
  14. Feedback equation
  15. Lafayette PA 675 Schematic ?
  16. phono preamp?
  17. Input tube recommendations...
  18. blind test tube preamp free for all
  19. Estimate Miller of Triode Strapped Pentode
  20. Tube Care for Prolonged Life
  21. bias resistor to use for a PP 300B?
  22. 12AY7 preamp schematic
  23. visio shapes
  24. vt25 in pre amp
  25. Wire Wound Pontentiometers - resistors
  26. Sound City B120
  27. Single supply 6922 buffer with 2SK CCS
  28. Aikido and 30W Class AB power buffer?
  29. Simple Pentode driver for a 45 ?
  30. Sennheiser HD 650 Question
  31. ampeg svt 2 pro preamp problem
  32. Edcor specs?
  33. hook up wire
  34. 6X5, 2x 6SL7 & a 6v6GT....
  35. strange tube? E-8128
  36. Value of grid-leak resistor
  37. TubeTech Valves
  38. 1st build done.
  39. Tube socket does not fit tube
  40. 300B SET Bias Help
  41. This Connector for an Amp Umbilical?
  42. Chassis Grounding and rectifiers
  43. TechTube TM Blackburn status
  44. Protection of tubes/amp...
  45. 6sf5
  46. EF86 - Interstage transformer - EL84 PP AB
  47. Schadeode
  48. High-power amplifier using transmitting tubes
  49. Basic testing/meter question
  50. Mains voltage change for Sonic Frontiers SFS80 ?
  51. transformer unused secondary noobie question
  52. Acrosound High Power Williamson - HELP!!!!
  53. 300B Cathode Feedback + Cathode Bias
  54. "Budget" GM70 SET
  55. Chokes next to output transformers?
  56. Adding more power tubes and make a tube amp switching them?
  57. 1. time biasing...
  58. SE solution wanted
  59. tube rectifier
  60. Baldwin amp, yet another amp conversion project
  61. sorry, yet another newbie - what can I make with these???
  62. Design Help (load line) on a SE Mono Block Amp build
  63. Plate Choke SRPP…. What do think?
  64. Looking for a Fisher chassis 51 mono amp
  65. Majestic Transformers
  66. Inverted Mos HV soft start
  67. Strange S5 K-16LS oscilloscope readings
  68. Why don't pentodes require aligned grids?
  69. First design for a tube noob
  70. Newbie and ASL Wave 8 problems
  71. Evil Experiments - Hammond Paper in Oil Caps
  72. Now I know what this Tranny can do
  73. Pinnacle tubes??
  74. First Project.... and Hello
  75. VTL Integrator schematic
  76. Old transformators...
  77. 12AU7/12AT7/12AX7 preamp schmatic needed
  78. Booz preamp
  79. Mystery "The Fisher" console mono amp
  80. Cracks and hiss in tube guitar amp
  81. Voltage Doubler
  82. Gas Reference Tube (5651/85A1/etc) Internal Impedance
  83. Sakuma-San Pilgramage?
  84. Any HP 8903 audio analyzer owners?
  85. xL508/6KW6/17KW6
  86. 6C45 phono input only?
  87. Initial Thoughts for "Mr. Piggy" SE Amp w/Screen Driven 6P45S
  88. Switch box using VR glow tubes
  89. Ideas for a simple 6080/6AS7 Push-Pull amplifier
  90. TJ 845 Tubes
  91. Looking for a web tutorial on basic calculations
  92. Berman linestage- do I reference heaters or not?!
  93. calculating gain
  94. Simple EL84 amp...
  95. Tube Direct Box - Got design?
  96. Raphaelite Audio Transformers & Sino Tube Amplifier Kits - What's your experience ?
  97. S-5 Electronics K-16LS & 6V6 Substitution
  98. how to calculate current requirement
  99. Stancor Transformer Data Sheet Needed
  100. 6BL7 replecement
  101. Toroid PT question
  102. New SET Amp
  103. What do you guys think..
  104. Output Stage in MJ Question
  105. Input voltage on an integrated tube amp
  106. 6sf5 = 1/2 12ax7?
  107. Observations of amplifier sound
  108. Sovtek KT88
  109. 24 or 24a as driver in 2 stage..?
  110. Too high transformator voltages...
  111. This power supply ok?
  112. 300B valves
  113. Modulation transformer for a driver transformer?
  114. Is 6V DC too low for heater filament?
  115. mundorff 0.47 silver in oil
  116. need manual for heathkit sp2
  117. Interresting Quiz. Which tube is this?
  118. el84 burn in time ?
  119. Tube Amp Compensation Q
  120. Quad II Advice
  121. Bias problem- 1 Socket shows extremely low bias!
  122. ECC88 vs E88CC
  123. Finally, back to my Simple SE project
  124. can trafo laminations rest on chassis?
  125. Ping Poindexter - 6SN7 Moebius Linestage Question
  126. More information wanted on this Phase Splitter Circuit
  127. Converting tube tester to Mutual Conductance
  128. 6UA4-GTA Question
  129. oscilloscope turned guitar amp?
  130. LED cathode bias - how to pick LED?
  131. preamp question
  132. Hickok tube tester calibration help needed
  133. Watch this !
  134. any Welborne Labs Ultrapath owners ?
  135. McIntosh transformer turns ratio
  136. 12E1 & S11E12 as a KT88 substitution
  137. Dynaco ST-70 Triode Conversion Techniques
  138. Larry Moore power supply
  139. SE to Balanced tube preamp idea
  140. Help on Cascode DN2540 CCS
  141. Kt88 Pp
  142. What was the diy world like before the internet?
  143. Updated my website
  144. Marshall AVT 50 preamp gain/distortion increase
  145. Interstage question in 6ac5G design
  146. Using a powered sub with my tube amp
  147. 807pp suggestions and guidance please
  148. 2 stage IT coupled SE suggestions.?
  149. WE429A similar to 6V6?
  150. 6FQ7 in RH84
  151. Deluxe Reverb Re-Issue High Frequency Noise.
  152. What splitter for this design ?
  153. preamp kit?
  154. PP power supply design questions
  155. Hammond 1650P for KT88 PP - any experience?
  156. Gibson tube amp mod for JAZZ
  157. Cathode Bypass caps - how to choose?
  158. Marantz 9 output power switch
  159. Single ended KT88 question
  160. Anyone Have a Hickok 800A
  161. Please post your experience with 6C45 and 6H30
  162. Series-Shunt Regulator I need
  163. Hammond Gripe
  164. capacitors in series- what value balancing resistors?
  165. Substituting Pentode for Triode
  166. Pentode Driver Calculations
  167. DHT and speed issues
  168. Aikido vibration issue
  169. Modified Salas Mosfet Shunt Reg
  170. What if O.H. Schade had MOSFETs?
  171. Please Look at my circuit
  172. EL34 tube amp that needs work on
  173. question on differential stage
  174. Need help with my ST70, decrease in one channel
  175. Diff drive
  176. Stereo Aikido GND help
  177. Hashimoto HL-20K-6 Line Output Transformers
  178. What is the RIGHT way to calculate the Value of the cathode resistor?
  179. Kt88 Se
  180. ping Tom Schlangen
  181. Found An Old Transformer, Now What???
  182. Brook 22A restoration, HELP!!
  183. Optimal operating point for 7N7/6SN7?
  184. Loudness Control Calc - Help Please
  185. Kofi Annan in: "Cascodin' with Steve Bench's RIAA!"
  186. New 300B PP amp completed, phase shift questions
  187. One more PSU2 question
  188. 5U4 Darling power TX advice needed
  189. how to optimize this pentode PP (PP1 clone with S11E12)
  190. Can I change the input to a 6SL7?
  191. Outputtransformer to IGA 6550C ULPP
  192. Question on use PSUD2 software
  193. Please add to my confusion re stepup transformers
  194. filament power supply question
  195. Major Hum Problem
  196. FARMER LAMP amp
  197. Valve amp "master class"
  198. Toroid power transformers - are they a good idea?
  199. EL84 SE amplifier
  200. Gain Problems
  201. My SE KT-88 Build thread
  202. Rolling da(rling's) 6j4wa
  203. Phono pre amp
  204. Michealson Audio Da Vinci Preamp
  205. Acrosound PP 6550: Any Advice?
  206. PS idea: isolating transformer from load
  207. K-16LS Help Please
  208. 6N6P-I life-time
  209. Filament Xformer woes...
  210. The Use of 1:1 Input Transformers in Linestages
  211. 12hg7 vs 12hn7a
  212. Anyone familiar with VAC PA 90C1?
  213. Help restore an RCP 413 tube tester
  214. voltage reg make heat sink live. Bad idea?
  215. Audio Innovations series 800 reactivation + some mods
  216. Using 2 rectifiers off 1 power supply
  217. Tube power supply
  218. Improving low bass of a Scott 299c
  219. 1939 Radioshack Catalog online...Anyone have a time machine?
  220. VCCS filament supply for 813
  221. digital volume control
  222. Philips AD3800AM and AD9710AM clones
  223. MTP6N60E replacement
  224. Upgrading output transformers
  225. Cascode RIAA
  226. need a manual for selectron model 40 tube tester??
  227. Volume swinging problem
  228. How to use the almost Group buy Diyaudio CCS circuit
  229. Big voltage swing tube recommendation please
  230. Morgan Jones KT88 PP
  231. Mystery Tube Amplifier -- Help?????
  232. tube tester how can i tell if have match pair?
  233. Photo flash caps for the power supply?
  234. Finding bias point in PP fixed bias
  235. 6V6 Push Pull
  236. Transformer Mounting Braces
  237. Rozenblit 6as7 otl questions
  238. Genesis pre-amplifier schematic wanted
  239. 6H30PI/6922 Preamp Circuit
  240. PFB line amp
  241. 2A3C Mono plate: Shuguang Or Sovtek?
  242. Any kit reccomendation would be helpful
  243. Cleaning tubes...
  244. Anyone recognise these tubes...
  245. big ol' 26lb. output transformer...
  246. ECC88 Help
  247. European Triode Festival ETF08: still some places vacant!
  248. Dynaco MK IV Mystery
  249. 6as7/6080 Se Otl
  250. 6GW8 substitute tube 6BM8?

Content Relevant URLs by vBSEO 3.3.2