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  1. tv damper diodes
  2. volume pot quite close to a tube - is this okay?
  3. UTC s42 special series
  4. 6H30P preamp schematics
  5. Digital potentiometer corrupt tube amps
  6. Alternative filament supply for 01A line stage
  7. Lamination Size
  8. Yaqin MC10L and KT88
  9. Help me read tube data sheets
  10. Quick Question (Driving 6L6GC's)
  11. Cause for concern -- scorch mark in tube
  12. why not 10k pot
  13. Dynaco Stereo 70 Output Transformer
  14. 6CJ3 rectifier or 6D22S rectifier
  15. Back-to-Back trannies
  16. Spring Reverb transformer
  17. Hamfest in Toronto area next weekend
  18. st70 bass response
  19. Triode "Champ" transformer v Edcor
  20. Low vs High aka Series vs Parallel Filaments
  21. Bogen monster MO200A schematic
  22. The Great Tempe Audio Shootout
  23. opinions on this p-p kt88
  24. Any XLR Tube Buffer Plans?
  25. Mystery transformers
  26. I need help with my next project
  27. A thought on Cathode feedback
  28. EL34 SE, direct coupled
  29. Ccs
  30. Hybrid amp: ECH83 + TDA2030A
  31. Leaving tube preamp always powered on.
  32. Variable 6922 heater to cathode voltage limit...?
  33. Is this risky?
  34. What to do with some WE tubes and others
  35. 6B4G SRPP
  36. pentode in triode mode SE vs a DHT SE like 2a3/300b
  37. dynakit decware bottlehead ... which to pick
  38. 6JC6 triode strapped?
  39. Searching for Raw Turrets
  40. Help.. EZ81 power supply diagram
  41. Ear 8l6
  42. Bogen H-30 guitar mod
  43. Voltage measurements from a blown 5AR4 vs. good 5Y3
  44. Sanity check on a 2A3 ultrapath with Pentode driver
  45. Star ground with dissimilar metals: concern?
  46. 5AR4 marked as 5V4GA?
  47. Calculating cathode bypass cap.
  48. Please need help! TUBE BIAS PROBE
  49. Aikido Phono Stage
  50. Using an El84 as a driver
  51. Transfromer value of this 300B circuit
  52. Chassis Layout & PS questions
  53. help needed for 1st DIY tube amp - Sakuma 845 SE
  54. Ideas for 4v filament triodes/pentodes
  55. Comments on Power Amp Viability
  56. Balanced active crossover advice
  57. The Tube Center
  58. Help1 with a 3 channel 2a3 amplifier
  59. volume control hum/noise
  60. PS choke magnetic induction
  61. Circlotron power supply question
  62. Autoformer as choke?
  63. E182CC
  64. Fender Hotrod Deville 212
  65. Grundig Fine Arts OTL Amplifier
  66. Damper diodes, 6ax4 and or 6w4?
  67. Knight 333 / Pioneer SX 34B info needed.
  68. Gargantuan Linestage Output Capacitors
  69. Quad II Restoration
  70. Help identifying a tube.
  71. Tube filaments in series?
  72. Design of Resonant Input Choke PSU
  73. Dissimilar triode
  74. How important is the quality of a triode used as a cathode follower
  75. EL34B tubes
  76. Why not so common to split dual triodes between channels?
  77. In search of power supply schematic for phono preamp
  78. General Electric vs Toshiba 6L6's
  79. Audio Research Dual 75 Capacitor Source?
  80. Choosing A Cathode bypass capacitor
  81. 12AU7 SRPP buffer suggestions
  82. Pentode/triode switch question
  83. Lundahll 1669A Secondary voltage???
  84. Substituting tube rectifiers by silicon
  85. newbie question: is the connection to the output xformer somewhat odd?
  86. All quiet on the SN front - about darned time!
  87. Estimating power output
  88. Looking for KT88 Amplifier Schematic by Mikael Abdellah
  89. Comments on passive pre and cables
  90. curvecaptor
  91. 6b4g pushpull build!newbie
  92. Need help; I have "dog leg" shaped waveform on my amp
  93. Output Transformer Question?
  94. Urgent OT HELP needed ASAP please
  95. Questions on Triode Strapping
  96. Morgan Jones BALANCED?
  97. What are your RFI precautions?
  98. Pentodes without cathodes?
  99. help me
  100. Good quality 6600 CT OT
  101. Local Hamfest score!!!
  102. Unknown Transformer
  103. S5 11g help
  104. 6SN7 pre-amp
  105. These tube can be use for amplifier
  106. Any pitfalls to choke derived CT?
  107. Audio Research D76A bias adjustment
  108. I meet Mr. Morgan Jones
  109. st70 electrolytic caps
  110. Thank you SY
  111. el84 1 channel stopped working help
  112. Help! Weak Bass!
  113. never say never - 300B amps...
  114. 6aq5 Screen resistor?
  115. L. Tatro farm radios from 1930's.
  116. Published/DIY ultra-low THD designs?
  117. EL84 SE auto bias
  118. Kofi Annan in: "Oscillatin' in the Bevois Valley'"
  119. Subwoofer connections
  120. 6/30L2 - What to do with them ?
  121. PIONEER SA-810 Tube Amp Schematics
  122. EF86 Gm
  123. EL84/6BQ5 Ultra-Linear Push-Pull Recomendation
  124. Aria 6P14 makeover.
  125. switch for paralelled tube
  126. Curvecaptor with pentodes??
  127. Ground point for HF decoupling cap?
  128. Cancelling Harmonics
  129. Quiet Tube
  130. LM385 Adjustable voltage ref. diode as LED bias?
  131. Tubed Expression Pedal
  132. Any spice models around for AA5-esque battery tubes?
  133. Where to connect shielding
  134. Bogen K15 convert to guitar amp
  135. Help 805 As that the friend makes to straighten even gallbladder machine
  136. studiogear of the beatles
  137. 6AK5 Triode Curves
  138. twisted pair signal, source selector and ground buss???
  139. Tiny Amplifiers
  140. A newly aquired Hum
  141. many jan tubes
  142. is this the correct way of adding a volume control?
  143. Basic DIY Valve Phono Stage
  144. 5879 Experience?
  145. personal jobs
  146. Wanted Triode strapped curves for pentode of ECL82.
  147. source selector / volume hum in Aikido
  148. DHTs and Cathode Bias
  149. Best SET driver stage with lots of B+?
  150. Tube Library Pspice error
  151. referencing DC heater to B+
  152. Double floating Circlotron
  153. Supply Capacitors ?
  154. Sakuma style Tango project
  155. MC10L is good or not
  156. Eico HF-20 & Claus Byrith PS voltage & power draw
  157. Voltage Regulator Tubes
  158. EL34 triode-connected grounding-grid curves?
  159. Pls help me understand AR SP6 circuit
  160. good begginer project (ax84 v.s. boozhound)
  161. I'm looking for 417a/5842 Preamp Schematic without any Transformer, any suggestion ?
  162. Trouble in a new DIY amp.
  163. Suitable Transformers
  164. PT winding calculations HELP
  165. How to measure frequency response with a PC?
  166. Pspice Tube Generation Software
  167. Tektron tube amplifier Italy made
  168. What to do with 2x Stancor A3830?
  169. REQ: Schematics and tweaking tips
  170. Jadis Da 60 & 80
  171. 6L6 for a beginner, plus ECL86/6GW8
  172. Leak Stereo 20 clone? possibly with 6V6?
  173. Any comment on Vacuum State dpa300b??
  174. Radiotron Designers Handbook
  175. Kofi Annan in: "Buggin' the 'S' Outta Me!"
  176. 12B4 eqivalent : sonics-wise ?
  177. Any Eimac Scematics?
  178. What's a 6SL7 Good For?
  179. Where Can Buy 6c41
  180. would twisted pair from a network cable be suitable as hook-up wires inside an amp?
  181. use a 45 to drive a 45 ?
  182. Regulated heater reference
  183. Heater Elevation, how high?
  184. 6201 alternative
  185. 4V Tentlabs filament supply
  186. Difference between stereo & 2 monoblocks
  187. Parallel operation of triodes.
  188. input tubes using 6922?
  189. Looking for choices - affordable PP OPTs
  190. removing HF damping pF caps for guitar
  191. HH Scott Transformer #s
  192. Tips for rebuilding this amp?
  193. Need advice - what can I build with this power transformer?
  194. Source for high voltage electro caps
  195. differences between K-12M and K-12G kits?
  196. 12B4 Line Stage with Fixed Bias?
  197. split push-pull output stage
  198. any thoughts/explanation on the power supply for this circuit?
  199. Where to begin on a PP?
  200. ProAc Tablette 50 Speakers
  201. Recognizing wiped out ECC's 81,82,83
  202. So tell me.... how did YOU get into tubes??
  203. 7189 or 7819 el84 tube?
  204. Question about Star Grounding
  205. Employment offered; breadboarding a Tube Monoblock
  206. Need help: Looking for ECF80 preamp schematic
  207. a 5AR4 after a diode bridge? what is the purpose?
  208. 807 & Pe 06/40n
  209. Board layout design
  210. 12AX7, 12AU7 Substitution
  211. 200,000 Tubes for sale in Michigan
  212. Ground scheme
  213. Help on 6L6GC Triode PP..working points..
  214. A neat trick?
  215. Setup & Implementation of G Pimm's Self-Bias CCS
  216. Tube Preamp FM interference
  217. Parafeed 6EM7 with 2k load?
  218. Need Help on HEATHKIT W-5M Power Transformer
  219. Fully isolated oilbath transformer.
  220. small signal DHT or DHP like AVVT20/8?
  221. EL 84 Pentode Config.
  222. Amp Tubes
  223. Can I replace the 1M volume pot with a 100K one in my HK A300?
  224. what's a hum band?
  225. Tube phono pre-amp needed.
  226. U/L or triode mode on music angel amp
  227. Why do some people dislike ultralinear?
  228. Adaptive class A
  229. 6X4 Tube rectifier.
  230. AN Conquest Clone modification
  231. Beautiful tubes.
  232. Selectable EL34/6L6 Amp OT
  233. Simple circlotron amp
  234. 12AX7 how many is enough?
  235. samples of 300B in pse or pp
  236. power supply choke with a connection for AC ground?
  237. Heathkit A7E for guitar - preamp gain
  238. musical fidelity x10d schematic
  239. Pot Value
  240. Eico 666 (satan's choice) tube tester help.
  241. Finally built a subminiature guitar amp... now I need help!
  242. Minor crackling in new valves
  243. Matchless Lightning v Spitfire
  244. Aikido linestage Help Needed
  245. Scott 299A Schematic
  246. Q on PP & current mirrors
  247. Calculating PT headroom in PP class AB
  248. EL34 Failure
  249. Aikido Transformer recommendation
  250. No mains transformer B+ ?

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