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  1. Unknown Transformer
  2. S5 11g help
  3. 6SN7 pre-amp
  4. These tube can be use for amplifier
  5. Any pitfalls to choke derived CT?
  6. Audio Research D76A bias adjustment
  7. I meet Mr. Morgan Jones
  8. st70 electrolytic caps
  9. Thank you SY
  10. el84 1 channel stopped working help
  11. Help! Weak Bass!
  12. never say never - 300B amps...
  13. 6aq5 Screen resistor?
  14. L. Tatro farm radios from 1930's.
  15. Published/DIY ultra-low THD designs?
  16. EL84 SE auto bias
  17. Kofi Annan in: "Oscillatin' in the Bevois Valley'"
  18. Subwoofer connections
  19. 6/30L2 - What to do with them ?
  20. PIONEER SA-810 Tube Amp Schematics
  21. EF86 Gm
  22. EL84/6BQ5 Ultra-Linear Push-Pull Recomendation
  23. Aria 6P14 makeover.
  24. switch for paralelled tube
  25. Curvecaptor with pentodes??
  26. Ground point for HF decoupling cap?
  27. Cancelling Harmonics
  28. Quiet Tube
  29. LM385 Adjustable voltage ref. diode as LED bias?
  30. Tubed Expression Pedal
  31. Any spice models around for AA5-esque battery tubes?
  32. Where to connect shielding
  33. Bogen K15 convert to guitar amp
  34. Help 805 As that the friend makes to straighten even gallbladder machine
  35. studiogear of the beatles
  36. 6AK5 Triode Curves
  37. twisted pair signal, source selector and ground buss???
  38. Tiny Amplifiers
  39. A newly aquired Hum
  40. many jan tubes
  41. is this the correct way of adding a volume control?
  42. Basic DIY Valve Phono Stage
  43. 5879 Experience?
  44. personal jobs
  45. Wanted Triode strapped curves for pentode of ECL82.
  46. source selector / volume hum in Aikido
  47. DHTs and Cathode Bias
  48. Best SET driver stage with lots of B+?
  49. Tube Library Pspice error
  50. referencing DC heater to B+
  51. Double floating Circlotron
  52. Supply Capacitors ?
  53. Sakuma style Tango project
  54. MC10L is good or not
  55. Eico HF-20 & Claus Byrith PS voltage & power draw
  56. Voltage Regulator Tubes
  57. EL34 triode-connected grounding-grid curves?
  58. Pls help me understand AR SP6 circuit
  59. good begginer project (ax84 v.s. boozhound)
  60. I'm looking for 417a/5842 Preamp Schematic without any Transformer, any suggestion ?
  61. Trouble in a new DIY amp.
  62. Suitable Transformers
  63. PT winding calculations HELP
  64. How to measure frequency response with a PC?
  65. Pspice Tube Generation Software
  66. Tektron tube amplifier Italy made
  67. What to do with 2x Stancor A3830?
  68. REQ: Schematics and tweaking tips
  69. Jadis Da 60 & 80
  70. 6L6 for a beginner, plus ECL86/6GW8
  71. Leak Stereo 20 clone? possibly with 6V6?
  72. Any comment on Vacuum State dpa300b??
  73. Radiotron Designers Handbook
  74. Kofi Annan in: "Buggin' the 'S' Outta Me!"
  75. 12B4 eqivalent : sonics-wise ?
  76. Any Eimac Scematics?
  77. What's a 6SL7 Good For?
  78. Where Can Buy 6c41
  79. would twisted pair from a network cable be suitable as hook-up wires inside an amp?
  80. use a 45 to drive a 45 ?
  81. Regulated heater reference
  82. Heater Elevation, how high?
  83. 6201 alternative
  84. 4V Tentlabs filament supply
  85. Difference between stereo & 2 monoblocks
  86. Parallel operation of triodes.
  87. input tubes using 6922?
  88. Looking for choices - affordable PP OPTs
  89. removing HF damping pF caps for guitar
  90. HH Scott Transformer #s
  91. Tips for rebuilding this amp?
  92. Need advice - what can I build with this power transformer?
  93. Source for high voltage electro caps
  94. differences between K-12M and K-12G kits?
  95. 12B4 Line Stage with Fixed Bias?
  96. split push-pull output stage
  97. any thoughts/explanation on the power supply for this circuit?
  98. Where to begin on a PP?
  99. ProAc Tablette 50 Speakers
  100. Recognizing wiped out ECC's 81,82,83
  101. So tell me.... how did YOU get into tubes??
  102. 7189 or 7819 el84 tube?
  103. Question about Star Grounding
  104. Employment offered; breadboarding a Tube Monoblock
  105. Need help: Looking for ECF80 preamp schematic
  106. a 5AR4 after a diode bridge? what is the purpose?
  107. 807 & Pe 06/40n
  108. Board layout design
  109. 12AX7, 12AU7 Substitution
  110. 200,000 Tubes for sale in Michigan
  111. Ground scheme
  112. Help on 6L6GC Triode PP..working points..
  113. A neat trick?
  114. Setup & Implementation of G Pimm's Self-Bias CCS
  115. Tube Preamp FM interference
  116. Parafeed 6EM7 with 2k load?
  117. Need Help on HEATHKIT W-5M Power Transformer
  118. Fully isolated oilbath transformer.
  119. small signal DHT or DHP like AVVT20/8?
  120. EL 84 Pentode Config.
  121. Amp Tubes
  122. Can I replace the 1M volume pot with a 100K one in my HK A300?
  123. what's a hum band?
  124. Tube phono pre-amp needed.
  125. U/L or triode mode on music angel amp
  126. Why do some people dislike ultralinear?
  127. Adaptive class A
  128. 6X4 Tube rectifier.
  129. AN Conquest Clone modification
  130. Beautiful tubes.
  131. Selectable EL34/6L6 Amp OT
  132. Simple circlotron amp
  133. 12AX7 how many is enough?
  134. samples of 300B in pse or pp
  135. power supply choke with a connection for AC ground?
  136. Heathkit A7E for guitar - preamp gain
  137. musical fidelity x10d schematic
  138. Pot Value
  139. Eico 666 (satan's choice) tube tester help.
  140. Finally built a subminiature guitar amp... now I need help!
  141. Minor crackling in new valves
  142. Matchless Lightning v Spitfire
  143. Aikido linestage Help Needed
  144. Scott 299A Schematic
  145. Q on PP & current mirrors
  146. Calculating PT headroom in PP class AB
  147. EL34 Failure
  148. Aikido Transformer recommendation
  149. No mains transformer B+ ?
  150. Help with horizontal mounting of 01-A and VR tubes
  151. twisted pair wiring on a tube amp
  152. Calculating SE Output Question
  153. Fixed-Bias Williamson EL34
  154. Bogen CHB-35 Preamp Mod
  155. resistors and sonic effects?
  156. tamura F-683 pole question
  157. EC52--Plate choke--300B/45/2a3/50/EL34 SE
  158. vtl deluxe 300 mb
  159. Is SD a Schottky Diode in this schematic?
  160. Maida regulator
  161. 572B vs 845 vs 211 SE
  162. Yet Another EL84 Amp
  163. Regulator for tube pre
  164. referencing heater supply ground to B+
  165. One Question for Hammond 1620 output transformer
  166. Bias adjustment on Dynaco ST70
  167. To SRPP or not?
  168. Ampeg SVT-VR or SVT-CL Schematics
  169. 811 vs 811A?
  170. Bogen integrated stereo amp
  171. Audionote japan ( Kondo) Ongaku..Can I ......... Clone to DIY!!!!!!!
  172. Broken 6L6WXT tube
  173. transformer questions
  174. Microphone With A Low Impedance Tube
  175. 6EM7 Push-Pull
  176. polarity of Xicon electrolytics
  177. SE EL84 question
  178. Slightly Different guitar amp question
  179. ST-70 Power Transformer Info
  180. My new quad SED EL34 arrived
  181. isolation transformer for 50C5 amp
  182. DSP and vacuum tubes (from Analog Devices)
  183. Asymmetrical P-P OPT Primary
  184. Gated beam discriminator "amplifier"
  185. PCB Mount Loctal Socket?
  186. "Zero bias"/ driving the grid positive
  187. Low Profile Power Transformer Help
  188. Lowering Gain on an Aikido Preamp
  189. HELP; DIY PP amp - it's phase splitter, or buy Chineese.
  190. Tube vs. SS CCS...
  191. Another "I need an amp recommendation" thread
  192. i am a new one here
  193. i am new ! can you help me
  194. Pentode CCS: Would somebody check my work?
  195. PSU for 12V DC heaters
  196. 50C5 Triode strapped?
  197. homemade faceplates
  198. Can I build this?
  199. Heptode audio preamp? ECH83
  200. E130L in Triode mode
  201. class AB2 who's using it for hifi?
  202. Obscure radio tube
  203. another mingda
  204. tube hum in Aikido
  205. equivalent input impedance
  206. 6DG6GT "Magic Amp"
  207. Solen Fast Cap vs ASC film/oils in PS
  208. Tektronix transformers
  209. *very* basic plate resistance Q
  210. Yaqin MC-5881A amplifier improvements
  211. Tube design software
  212. More wasted space
  213. Radio tube guitar preamp
  214. PC Mount Novar Socket Suppliers
  215. Planning my first project
  216. Power Transformer leakage
  217. current sensing in series with anode resistors
  218. Please recommend a 9-pin dual triode = 417A
  219. Dynaco Pas 2
  220. Anyone have accurate charts for a KT90?
  221. Calling all Phono Preamp gurus, I'm looking for some plans
  222. Measuring Unknown Transformers
  223. Swinging choke vs std. choke in PS
  224. scope tests on a Heathkit A7E
  225. tube hum in a 6SN7 Aikido - is this weird?
  226. ECC807 preamp
  227. Ode to the 8416
  228. CCS 10M45 in Cathode of CF Driver
  229. Audionics help
  230. what 8-pin tubes would you suggest for an aikido preamp?
  231. KT88 tubes
  232. Any one tried these transformers?
  233. Williamson 6L6 Monoblocks (Finally)
  234. Master Volume preamp.. simple?
  235. ~2 watt SET decision
  236. retube order
  237. MC Riaa preamp help/opinions please
  238. WTB Fairchild 260 transformers
  239. Peter Millet amp
  240. 1946 Gibson BR-4 Amplifier tube question
  241. Power Regulator PCB's and Aikido parts
  242. A heater wiring DOH! moment??
  243. hum in fisher 800c phono section
  244. Aikido warm-up hum, resistor types, etc.
  245. Any of these tubes good for amps?
  246. Mini 98 El84 PP amplifier
  247. 1X6S33S=6X6S19P which one gives less impedance?
  248. schematic for 12.6 VDC heaters
  249. PP transformer for SE?? Help!
  250. 7-pin miniature tubes for audio?

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