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

  1. Input tube recommendations...
  2. blind test tube preamp free for all
  3. Estimate Miller of Triode Strapped Pentode
  4. Tube Care for Prolonged Life
  5. bias resistor to use for a PP 300B?
  6. 12AY7 preamp schematic
  7. visio shapes
  8. vt25 in pre amp
  9. Wire Wound Pontentiometers - resistors
  10. Sound City B120
  11. Single supply 6922 buffer with 2SK CCS
  12. Aikido and 30W Class AB power buffer?
  13. Simple Pentode driver for a 45 ?
  14. Sennheiser HD 650 Question
  15. ampeg svt 2 pro preamp problem
  16. Edcor specs?
  17. hook up wire
  18. 6X5, 2x 6SL7 & a 6v6GT....
  19. strange tube? E-8128
  20. Value of grid-leak resistor
  21. TubeTech Valves
  22. 1st build done.
  23. Tube socket does not fit tube
  24. 300B SET Bias Help
  25. This Connector for an Amp Umbilical?
  26. Chassis Grounding and rectifiers
  27. TechTube TM Blackburn status
  28. Protection of tubes/amp...
  29. 6sf5
  30. EF86 - Interstage transformer - EL84 PP AB
  31. Schadeode
  32. High-power amplifier using transmitting tubes
  33. Basic testing/meter question
  34. Mains voltage change for Sonic Frontiers SFS80 ?
  35. transformer unused secondary noobie question
  36. Acrosound High Power Williamson - HELP!!!!
  37. 300B Cathode Feedback + Cathode Bias
  38. "Budget" GM70 SET
  39. Chokes next to output transformers?
  40. Adding more power tubes and make a tube amp switching them?
  41. 1. time biasing...
  42. SE solution wanted
  43. tube rectifier
  44. Baldwin amp, yet another amp conversion project
  45. sorry, yet another newbie - what can I make with these???
  46. Design Help (load line) on a SE Mono Block Amp build
  47. Plate Choke SRPP…. What do think?
  48. Looking for a Fisher chassis 51 mono amp
  49. Majestic Transformers
  50. Inverted Mos HV soft start
  51. Strange S5 K-16LS oscilloscope readings
  52. Why don't pentodes require aligned grids?
  53. First design for a tube noob
  54. Newbie and ASL Wave 8 problems
  55. Evil Experiments - Hammond Paper in Oil Caps
  56. Now I know what this Tranny can do
  57. Pinnacle tubes??
  58. First Project.... and Hello
  59. VTL Integrator schematic
  60. Old transformators...
  61. 12AU7/12AT7/12AX7 preamp schmatic needed
  62. Booz preamp
  63. Mystery "The Fisher" console mono amp
  64. Cracks and hiss in tube guitar amp
  65. Voltage Doubler
  66. Gas Reference Tube (5651/85A1/etc) Internal Impedance
  67. Sakuma-San Pilgramage?
  68. Any HP 8903 audio analyzer owners?
  69. xL508/6KW6/17KW6
  70. 6C45 phono input only?
  71. Initial Thoughts for "Mr. Piggy" SE Amp w/Screen Driven 6P45S
  72. Switch box using VR glow tubes
  73. Ideas for a simple 6080/6AS7 Push-Pull amplifier
  74. TJ 845 Tubes
  75. Looking for a web tutorial on basic calculations
  76. Berman linestage- do I reference heaters or not?!
  77. calculating gain
  78. Simple EL84 amp...
  79. Tube Direct Box - Got design?
  80. Raphaelite Audio Transformers & Sino Tube Amplifier Kits - What's your experience ?
  81. S-5 Electronics K-16LS & 6V6 Substitution
  82. how to calculate current requirement
  83. Stancor Transformer Data Sheet Needed
  84. 6BL7 replecement
  85. Toroid PT question
  86. New SET Amp
  87. What do you guys think..
  88. Output Stage in MJ Question
  89. Input voltage on an integrated tube amp
  90. 6sf5 = 1/2 12ax7?
  91. Observations of amplifier sound
  92. Sovtek KT88
  93. 24 or 24a as driver in 2 stage..?
  94. Too high transformator voltages...
  95. This power supply ok?
  96. 300B valves
  97. Modulation transformer for a driver transformer?
  98. Is 6V DC too low for heater filament?
  99. mundorff 0.47 silver in oil
  100. need manual for heathkit sp2
  101. Interresting Quiz. Which tube is this?
  102. el84 burn in time ?
  103. Tube Amp Compensation Q
  104. Quad II Advice
  105. Bias problem- 1 Socket shows extremely low bias!
  106. ECC88 vs E88CC
  107. Finally, back to my Simple SE project
  108. can trafo laminations rest on chassis?
  109. Ping Poindexter - 6SN7 Moebius Linestage Question
  110. More information wanted on this Phase Splitter Circuit
  111. Converting tube tester to Mutual Conductance
  112. 6UA4-GTA Question
  113. oscilloscope turned guitar amp?
  114. LED cathode bias - how to pick LED?
  115. preamp question
  116. Hickok tube tester calibration help needed
  117. Watch this !
  118. any Welborne Labs Ultrapath owners ?
  119. McIntosh transformer turns ratio
  120. 12E1 & S11E12 as a KT88 substitution
  121. Dynaco ST-70 Triode Conversion Techniques
  122. Larry Moore power supply
  123. SE to Balanced tube preamp idea
  124. Help on Cascode DN2540 CCS
  125. Kt88 Pp
  126. What was the diy world like before the internet?
  127. Updated my website
  128. Marshall AVT 50 preamp gain/distortion increase
  129. Interstage question in 6ac5G design
  130. Using a powered sub with my tube amp
  131. 807pp suggestions and guidance please
  132. 2 stage IT coupled SE suggestions.?
  133. WE429A similar to 6V6?
  134. 6FQ7 in RH84
  135. Deluxe Reverb Re-Issue High Frequency Noise.
  136. What splitter for this design ?
  137. preamp kit?
  138. PP power supply design questions
  139. Hammond 1650P for KT88 PP - any experience?
  140. Gibson tube amp mod for JAZZ
  141. Cathode Bypass caps - how to choose?
  142. Marantz 9 output power switch
  143. Single ended KT88 question
  144. Anyone Have a Hickok 800A
  145. Please post your experience with 6C45 and 6H30
  146. Series-Shunt Regulator I need
  147. Hammond Gripe
  148. capacitors in series- what value balancing resistors?
  149. Substituting Pentode for Triode
  150. Pentode Driver Calculations
  151. DHT and speed issues
  152. Aikido vibration issue
  153. Modified Salas Mosfet Shunt Reg
  154. What if O.H. Schade had MOSFETs?
  155. Please Look at my circuit
  156. EL34 tube amp that needs work on
  157. question on differential stage
  158. Need help with my ST70, decrease in one channel
  159. Diff drive
  160. Stereo Aikido GND help
  161. Hashimoto HL-20K-6 Line Output Transformers
  162. What is the RIGHT way to calculate the Value of the cathode resistor?
  163. Kt88 Se
  164. ping Tom Schlangen
  165. Found An Old Transformer, Now What???
  166. Brook 22A restoration, HELP!!
  167. Optimal operating point for 7N7/6SN7?
  168. Loudness Control Calc - Help Please
  169. Kofi Annan in: "Cascodin' with Steve Bench's RIAA!"
  170. New 300B PP amp completed, phase shift questions
  171. One more PSU2 question
  172. 5U4 Darling power TX advice needed
  173. how to optimize this pentode PP (PP1 clone with S11E12)
  174. Can I change the input to a 6SL7?
  175. Outputtransformer to IGA 6550C ULPP
  176. Question on use PSUD2 software
  177. Please add to my confusion re stepup transformers
  178. filament power supply question
  179. Major Hum Problem
  180. FARMER LAMP amp
  181. Valve amp "master class"
  182. Toroid power transformers - are they a good idea?
  183. EL84 SE amplifier
  184. Gain Problems
  185. My SE KT-88 Build thread
  186. Rolling da(rling's) 6j4wa
  187. Phono pre amp
  188. Michealson Audio Da Vinci Preamp
  189. Acrosound PP 6550: Any Advice?
  190. PS idea: isolating transformer from load
  191. K-16LS Help Please
  192. 6N6P-I life-time
  193. Filament Xformer woes...
  194. The Use of 1:1 Input Transformers in Linestages
  195. 12hg7 vs 12hn7a
  196. Anyone familiar with VAC PA 90C1?
  197. Help restore an RCP 413 tube tester
  198. voltage reg make heat sink live. Bad idea?
  199. Audio Innovations series 800 reactivation + some mods
  200. Using 2 rectifiers off 1 power supply
  201. Tube power supply
  202. Improving low bass of a Scott 299c
  203. 1939 Radioshack Catalog online...Anyone have a time machine?
  204. VCCS filament supply for 813
  205. digital volume control
  206. Philips AD3800AM and AD9710AM clones
  207. MTP6N60E replacement
  208. Upgrading output transformers
  209. Cascode RIAA
  210. need a manual for selectron model 40 tube tester??
  211. Volume swinging problem
  212. How to use the almost Group buy Diyaudio CCS circuit
  213. Big voltage swing tube recommendation please
  214. Morgan Jones KT88 PP
  215. Mystery Tube Amplifier -- Help?????
  216. tube tester how can i tell if have match pair?
  217. Photo flash caps for the power supply?
  218. Finding bias point in PP fixed bias
  219. 6V6 Push Pull
  220. Transformer Mounting Braces
  221. Rozenblit 6as7 otl questions
  222. Genesis pre-amplifier schematic wanted
  223. 6H30PI/6922 Preamp Circuit
  224. PFB line amp
  225. 2A3C Mono plate: Shuguang Or Sovtek?
  226. Any kit reccomendation would be helpful
  227. Cleaning tubes...
  228. Anyone recognise these tubes...
  229. big ol' 26lb. output transformer...
  230. ECC88 Help
  231. European Triode Festival ETF08: still some places vacant!
  232. Dynaco MK IV Mystery
  233. 6as7/6080 Se Otl
  234. 6GW8 substitute tube 6BM8?
  235. Choke question
  236. Screen driven output stage
  237. Peavey Delta Blues Reverb Frustration
  238. 2a3 parallel driven 6sn7 schem
  239. WMD or Big Freakin Power Supply
  240. DIY My tube tester
  241. Help! May have dropped 12sn7 in place of 6sn7
  242. Got a bucketload of tubes, need identification
  243. Help from Allen Wright SuperReg owner
  244. Moscode 600
  245. Signal caps to keep on hand
  246. pin-compatible EF86 alternative?
  247. Capless Parafeed (with apologies to SY)
  248. T Eaton Viking schematics?
  249. S5 K-16LS mods, tweaks?
  250. 5687 fully balanced line stage

Content Relevant URLs by vBSEO 3.3.2