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  1. Biasing amp
  2. CCS placement
  3. clueless on console
  4. 5E3 Build Problems Cont'd
  5. Popping in stepped volume control
  6. 6by5 CRC Values
  7. Is this do-able?
  8. PCB for Gary Pimm's CCS & SS Pentode
  9. EL86 Single Ended PP Power Amplifier
  10. Diyhifisupply Billies - dead OPTs?
  11. 6H30P-DR
  12. Tube AMP and stax headphones....
  13. soft start power supply for dynaco st-70
  14. The Telefunken EF86?
  15. Can you run parallel circuits from a rectifier?
  16. Mullard 5-20 with 6L6GC's?
  17. Adding balanced input to 6N1P tube.
  18. Partial feedback (anode grid) with cathode follower
  19. 4P1L as First gain stage or in Pre-Amp..?
  20. Advice on 6418 design requested
  21. Shorting jumpers for octal sockets
  22. Tube lineup in an Admiral y4302
  23. John Broskie MIA?
  24. Audio Research VT 100 MKII need help!!
  25. Help with AD30 PSU build
  26. Who was the Japanese Amp Guru?
  27. 6922 vs an ECC82.....a test.
  28. Triode connected 6LW6 for SE
  29. 12AD7???
  30. New Book Review
  31. Hoax or truth about 6SJ7 (Equiv.: 6J8P/5693/CV3699/VT-116A).. ???
  32. looking for hi volt commercial power supplies
  33. 6L6, 6L6GT, 6L6GC, 5881, 7027, KT66...
  34. ECC85
  35. Pioneer 304B fm/am reciever schematic
  36. ECC82 JJ Made in Slovak Republic!?
  37. Definition of matched
  38. Polycarbonate as coupling caps?
  39. pick tubes for tubecad unbalancer
  40. OPT for EL34
  41. 12v dc tube amp/pre high SQ
  42. Better than 12au7?
  43. Amps and 4-ohm loads
  44. What is the "best" tube amp / speaker / source you have ever used?
  45. 814 as Triode / Max. Ug2 voltage
  46. valves better than solid state?
  47. musical fidelity x10d clone
  48. Acrosound 7591A amp
  49. suggestions for simple amp wanted
  50. Wish you could nail down your copper wool holder?
  51. HELP- Pricing Genuine Genalex KT77's
  52. K120 on 6550/KT88/KT90 anyone tried???
  53. do tubes ever leak b+ into heaters?
  54. How can I use these high-current, low-inductance chokes?
  55. 6005w Q+introduction
  56. Sonic Frontiers Line 3 Increate the Output Voltage
  57. Dynaco ST-70 chassis
  58. Opinion on the scheme with the 12AX7!
  59. Fully Parametric Tube EQ (with gyrators)
  60. 600v snap-in electrolytics
  61. anyone knows of 6 channel tube amplier ?
  62. 6N6P SE idea
  63. EL84
  64. Long tails and current sources
  65. How to reduce gain in mu-follower?
  66. Chassis
  67. Single Ended Amplifier 6P43P
  68. 6C33C spacing
  69. A very excitable Luminescence
  70. KT-88 Data sheet question.
  71. Good 12ax7
  72. Operating points theory...
  73. 1-stage (killer, literally) amp made of junk
  74. Two bridges and a CT transformer....
  75. What should clipping look like? (AKA reading sine waves)
  76. Combining coupling cap's
  77. Quicksilver Mono Amp Model 1300 - creating Auto Bias wanted
  78. 845 with kathode bias
  79. Mixing Resistor types?
  80. Looking for EI-75 80% perm ...
  81. Ambient temperature target
  82. Old radio
  83. JJ glowing twice as bright
  84. DPA150
  85. Discharging a capacitor - should I??
  86. German transformer builder
  87. 6P30B-V subminiature tube
  88. Improved Tube Headphones Amp
  89. Best method of reducing line voltage into vintage transformers?
  90. Harman-Kardon TA5000X, A500 or A50K OPT - Quality?
  91. hum measurement
  92. DIY 450VA+ multi-tapped tube power trafo
  93. DIY 450VA+ multi-tapped tube power trafo
  94. Duelund Alexander Copper Foil Capacitors
  95. Yaqin MS-20L tube recommendation
  96. Tube version of aleph-x. Is it possible?
  97. help - Looking for specs Trimax TA1439
  98. where can i get transformers in the UK?
  99. Mono 5W-17W Power Amp using EL84 push-pull
  100. Reference Books
  101. Tresco?
  102. BELL 3DT, Phono RIAA Odditty
  103. 6SL7/6V6 tubes in an RH84 SE amplifier?
  104. How to calculate max voltage swing in cathode follower?
  105. Power Transformer Temp
  106. Silvaweld OTL Tube Reference 100 schematics
  107. Need suggestion for 6.3V-0-6.3V
  108. Unison Research SMART 845
  109. 26/45 SE amp ?
  110. V2 rocket guidance system.
  111. Sweep Tube SEP
  112. Help me find cirquit, I forgot where I last saw it?
  113. Passive or Active? For Wet/Dry mix on valve driven reverb.
  114. Plate resistor for FVP5a
  115. Simulation
  116. DHT w/ DC heater - How to rig cathode bias?
  117. schematics needed- Luxman MQ70
  118. CSS for 6c33?
  119. Svetlana (Winged C) 6L6GC vs. the Others...
  120. Power Supply Help- 807's, High Voltage
  121. Looking for info about a 1940s Amp
  122. More amplifiers in the Wireless World Archive
  123. why does my amp require a preamp?
  124. Why two GZ34 in this schematic?
  125. Floating Dc heaters, capacitor to ground
  126. anyone have experience with 1J17B tube
  127. Preventing arcing on standby switch?
  128. Help with buzzing mains transformer
  129. Balanced Amp Topology
  130. ECC33
  131. Distortion spectrum vs feedback
  132. Heaters question
  133. Why do transformers have such*&%#* hardware?
  134. what's my fisher 400 off gassing?
  135. Executone schematic needed
  136. parafeed output amplifier
  137. B+K 500 Testor Question
  138. CCCP SUBTUBE: my last project
  139. Aikido Line-Stage jumper question
  140. Tube Amplifier to power Gale GS401 speakers
  141. Bypass Cap on cathode?
  142. How to measure/calculate dB of negative feedback?
  143. Need your advices & experiences
  144. Parmeko gresham transformers specifications
  145. Valve cascodes for Phono input.
  146. ST-70 XLR Balanced Driver Boad
  147. I'm new here any places for like us newbies?
  148. Noob looking for some advice
  149. Stand Alone guitar power amp for evaluation
  150. QQE04/5 Curves
  151. Help on Audio Research D79A adjustment
  152. lazarus preamp hums even with volume down and no components connected.
  153. Troubles when elevating a LT supply
  154. Turning up the heat: cathode bias
  155. Anyone build Dynaco Mk IIIs with Sullivan boards?
  156. Lowering gain on Frank's 6SN7 preamp
  157. Pro amp input modification
  158. Sanity of compactron for "integrated" headphone amp?
  159. vdc drop
  160. HELP - SMART 845 or 300B SE
  161. DC Servo - Direct Coupling Applications?
  162. Edison 12 amplifier
  163. Mounting terminal strips to blank copper board
  164. 6C33C tube socket for GM70 tube??
  165. Fisher X100C 2 sets speakers?
  166. 4P1L DHT Line Stage
  167. Trying to identify an old radio tube
  168. Yaqin CD3 upgrading caps help for novice
  169. push pull adjustable fixed bias
  170. Another SE amp design.
  171. Chassis to experiment with....
  172. Ray Butts Echosonic #27
  173. Ampeg Reverberocket II Hum
  174. What coupling capacitor values are common
  175. Yamamoto A-09s
  176. 9001 variant of Acorn 954 Pentode
  177. Khron-Hite UHR220 tube power source
  178. Grounding the 4ohm tap
  179. Rectifier mechanical buzz
  180. Informed opinion(s) on phase inversion?
  181. Computer grade electrolytics
  182. Strange problem with Grundig CS200 tube receiver
  183. Puresound P10 RIAA
  184. Need help on DIY Toccata Phono Preamp
  185. Single 6EB8 tube kit?
  186. SE OPT as PS choke
  187. Best input DHT tube?
  188. Stainless Steel Chassis Polishing
  189. Hm, which order to replace 2 out of 4 tubes?
  190. EL34 Musical Machine Output XFMR suggestions
  191. Driver stage to finals newbie questions - (I hope not dumb questions)
  192. Preamp with single 12ax7 Ecc83 for stereo?
  193. Ming-Da MC-300B845 schematic needed
  194. My RH84 Build - first amp after a 25 year break -:)
  195. Jolida 502a Snubber Mod
  196. Again
  197. KT120, PSE
  198. 6v6 bias with cathodyne
  199. How did the "magic eye" work on old valve radios ?
  200. High voltage switching
  201. High voltage switching
  202. EF184 as ccs / design questions / spice model
  203. ECC807
  204. Chassis thickness
  205. Compactron 6C10 & 6Q11/6K11 tube data
  206. Output voltage guitar preamp
  207. Reverse Engineering leads from Tube amp
  208. Did you all see this??
  209. WESTREX 60 WATT AMP
  210. Johari's audio system
  211. el95 single ended amp project needs help with preamp
  212. SS Rectifers and Zero-Crossing Distortion, possible fix or idotic idea?
  213. 3 ways active crossover
  214. 5691 tube tonal balance
  215. Dynaco Mark III chassis
  216. variac - breadboard with choke input
  217. Stancor A-8053 Output Transformer - opinions wanted!
  218. Nice OPT's for headphone amp...
  219. Eimac 304TH anode question
  220. Is WE310A > 45 > 300B PP possible?
  221. Aikido 5687 PCB - Headphone and C3
  222. Twist-lok caps?
  223. Tube RIAA(something easy)
  224. Testing power pentodes
  225. NTC THERMISTOR as SOFT START for TUBES
  226. NEW ARIA (MENG) MINI 6P1
  227. Basic schematic for Dodd Audio tube buffer?
  228. EL844
  229. 3 channel all tube preamp pedal w/fx loops for all clone build
  230. Tube CAD?
  231. Cap Problem with philco 49-1401
  232. Music Angel
  233. Help 7189A Tubes!
  234. Bulb in cathode?
  235. Gain and volume pots - newbie question
  236. Resistor test TX7525 AMRG CMF55
  237. I think I made a mistake
  238. 12at7 and 12au7
  239. PSE KT88 using Mikael's basic schematic.....
  240. PSU sanity check - negative rail?
  241. Mods Tube Amps/Pre-amp
  242. Help to find out what OPT are these
  243. LL1660 P PZ Lundahl interstage ringing problem GM70pp
  244. Possible PS chokes
  245. Adding Bal output to Akido
  246. Input impedance, the higher the better or not?
  247. Risk of DC coupled input with tube pre-amp ?
  248. UL Cascode phono
  249. DC Imbalance with the LTP
  250. More Wireless World articles archived

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