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  1. DH rectifier hookup.
  2. WE 310A vs. Russian 310A in WE91
  3. CRC PSU for preamp
  4. Question on the installation of LL1668 plate choke
  5. max plate voltage rating in tube datasheet
  6. Tube for a shunt voltage regulator
  7. choosing cap values for aikido
  8. Tubes in the Intermediate Stage
  9. c3m + 300b + miller capacitance
  10. How do I bias up a constant current series filament circuit?
  11. The perfect phono preamp.
  12. Got my 6BG6GA's last night
  13. Tubes4HiFi SP-6 preamp
  14. Stupid electrolytic cap question.......
  15. Shuguang 807s?
  16. LX-72A Sanity Check for Noooobie?
  17. Convert EL84 to 6V6? Anyone try this?
  18. PC96
  19. Ultrapath output transformers
  20. Grant RIAA phono with 12AX7/ECC83
  21. Tube VS SS voltage regulators - any advantages?
  22. Ra-a??
  23. Help with my el509 amp almost done but with one problem.
  24. McIntosh chassis help needed
  25. Tube Voltage Regulator Design
  26. DC Tube Amplifiers
  27. Coupling cap voltage rating
  28. Anyone experienced in the 76 tube?
  29. aikido thump
  30. bypassing preamp board in integrated amp
  31. Mallory FP 2x30/500 for Scott LX-72 - NOOB
  32. is it really required to use carbon comp for grid stoppers?
  33. How much trickle current can fixed bias cathode batteries stand?
  34. Who is the administrator?
  35. LM329 as voltage reference in a CCS.
  36. Euridice Preamp with 5842 and LL1660
  37. Trans. alignments
  38. Audio Note M3 Kit modification
  39. Has anyone simulated an "Aikido" amplifier?
  40. Upgrading ST70 PS w/ SS question
  41. 6N1 Chinese tube and others
  42. 12AT7 Linestage design
  43. ECF80 instead of 7199
  44. Modifying a tube tester into a curve tracer (oscilloscope X/Y outputs) ?
  45. 6922 vs 6SN7
  46. Transformer DCR's
  47. ferrite beads v. grid resistor
  48. What went wrong with my amp? Bass driver strange movement.
  49. Toccata Phono Preamp
  50. Drawbacks of Parafeed?
  51. aikido problem
  52. RS253 giant SE monoblock (Chinese)
  53. Plate chokes & Power chokes
  54. 10uF filter cap too small? PSU schematic inside
  55. HOT ROD DELUXE: CRACKLE...POP...what to do?
  56. converting Baldwin organ amp to guitar
  57. best amp for rock n roll
  58. quick question about tube relays
  59. Yeo's Simple EL84 with a twist
  60. ST-70 OPT, A-470 question
  61. meixing 805 tube amp problems
  62. Advice for NOOBie - Dad's Scott LK-72
  63. Peavey Valve King 112
  64. KT66 SE amp, grid current or not?
  65. 269EX in a champ?
  66. How do I achieve more output power?
  67. Driver stage load resistor
  68. More Edcor XSM10K/10K Specs
  69. DC filament
  70. driver stages
  71. Bay Area DIY is Cancelled Because....
  72. Is constant filament current better way to build amps?
  73. Next amp build - Trainwreck - Princeton - Deluxe ???
  74. Quicksilver M135 Output Transformers Color Code?
  75. Dynaco ST70 clone, tubes substitution question
  76. caddocks mk132: has anyone used them for tube projects?
  77. DIY Pro Audio Recording Gear - La2a, Pultec, more.
  78. size of filtering caps SS vs OTL tube
  79. Current rating and tube current draw
  80. NUCLON -- My first hybrid guitar amp
  81. PP splitters again
  82. preamp with output trannies.
  83. Is it the 6SN7 or me?
  84. My Kind of Guitar Tuner
  85. Regulating tube amp power supply - can Iget away with a simpler CLC filtering scheme?
  86. Manufacture date of 6SN7s
  87. simple 12AU7 cathode follower
  88. How's your bench, what's your favorite setup/tool ?
  89. Siemens H42 AM/FM receiver circuit diagram?
  90. 429A load lines
  91. Mu-stage on output
  92. My new project, 2 x KT88 60W amp
  93. Tube Amp Hum
  94. Modding MEIXING MC 3008
  95. crate vc 2110 schematic ???
  96. Will this work for an EL84 push pull?
  97. "Integrated" or "stand alone"
  98. Heater to cathode voltage limits in cascodes???
  99. some Japanese can help me? (OPT trafo winding)
  100. Quicksilver 8417 a class C amp?
  101. Newcomer, where to start?
  102. Benefits of Potted Output Transformers
  103. Transformer question
  104. 6AW6A, Unloaded
  105. Aikido PSU help
  106. Rectifier that doesn't need own filament supply?
  107. Plate to Cathode Cap -- what's this??
  108. Need Help Understanding/Optimising a Schematic
  109. Simple basic question quick
  110. problem on thorens PR15 (strange filaments circuity)
  111. My 1W 5687 SE Direct Coupled Power Amp
  112. VT-25 linestage + step-down trafo
  113. What to do with 803's
  114. Newbie: KT88 amp info needed
  115. 805 tube amp, uProcessor controlled
  116. Class A Tube BJT Hybrid
  117. John Broskie's enhanced T8
  118. Audio Research SP6 E
  119. André Charlin anybody got his Tube Amp
  120. Info needed - Shuguang SG120-C Integrated Amp
  121. Help with 6SN7 preamp
  122. 12b4 vs. aikido linestage
  123. KT88/6550 as Triode
  124. 6AU6WA triode connected as a line amp?
  125. A few basic noobie questions.
  126. Which connector for PSU/chassis B+ supply?
  127. Quad II-Forty schematic ?:
  128. Audio Research Manuals
  129. I was thinking
  130. silicon or tube rectifier?
  131. Is this OK for the Etude Preamp?
  132. gary pimm's latest self-biasing CCS circuit
  133. 46 tube pre
  134. BEZ T9B Intermittent problem
  135. Heathkit W-5M rebuild
  136. Masco MA25N repair
  137. Sunday's Project
  138. 5881- 6l6
  139. Gas-Rectifier power supply
  140. How to get more juice out of this shunt regulator
  141. Resistors on DHT Cathode
  142. Noise floor rise on heathkit W4-AMs when power supply transformers were swapped
  143. Help me finish up this SET project (multiple questions / ramblings)
  144. This Is Cool !!
  145. output bias servo
  146. Looking for dual power triodes.
  147. Need advice selecting a 2A3 design
  148. Feedback basics
  149. tubalizer..
  150. The 6b4g
  151. 6N6P Operating Points
  152. Lundahl+EL84 PP+concertina+input stage
  153. Help wanted for a truly loco project. (A Tube--gainclone hybrid guitar amp!)
  154. Looking for circuit of SE amp. for Eimac 100TH
  155. Counterpoint Sa-3000 Circuit Diagram
  156. compressor Faiirchild 670 DIY
  157. How much headroom for a choke---to stop it from humming?
  158. Bay Area Diy Festival
  159. Using Eagle for Tubes designs
  160. Worst that could happen?
  161. Identifying output tx.
  162. Small pre
  163. Cathode follower driver
  164. comment on this B+ supply
  165. ODD TUBES, what to look for?
  166. 2A3 SE and Edcorp tranny
  167. Differential amplifier with 12AX7
  168. Bogen Challenger CH30 Amplifier
  169. do I need to use a heatsink on a DN2540 in a B+ supply?
  170. Transformer, 10K 1:1 - which one?
  171. Where to find Blackgate Caps?
  172. Passive Pre-Amp causes huge power loss?
  173. Rubbish fluorescent tubes: Eterna Lighting (UK), GE (US)
  174. Melos TM90 ST schematic?
  175. My first tube preamplifier:)
  176. Opinions on the Conrad Johnson MV75 amplifier please.
  177. Favorite Tubes
  178. SS replacement for 83 tube ?
  179. AMC CVT 2030 Output Transformer.
  180. 6-ohm speaker to tube amp
  181. What tubes share the pinout with the 5687?
  182. SMPS for B+ discussion
  183. Building a 200W+ bass amp
  184. need help understanding voltage regulator schematic (using CCS) from Raleigh Audio
  185. SS No R No C Power Supply for Tubes
  186. FREDs? Replace 1N4003 rectifier diodes?
  187. Hot running regulated dc filament supply for aikido preamp
  188. B+ TX. overkill?
  189. 33 Power Pentode Design Pointers Needed
  190. What Wiki?
  191. help understanding updated DRD from J Elliano's site (using 6AN4 instead of 6n1p)
  192. Zen SE84TS
  193. 5687 tube
  194. Tube vs. Semiconducter rectification
  195. Bogen CHB35 Mods and Preamp ideas
  196. I Want To Build A 100+Watt per/channel Tube Poweramp
  197. Phonodude problem
  198. enjoythemusic's t-rex amp: where is the +70VDC tap?
  199. Earthing and how it effects sound.
  200. Rectifier question
  201. Help for SE Main Transformer
  202. 6D22S Getter Question
  203. Repair of a McIntosh MC225 power amp
  204. OPA627 with tube buffer....
  205. Bell Stereophonic 3030 help
  206. Choosing the line stage preamp.
  207. I Need Help, Mcintosh/Marantz 7 content
  208. For 45 > 845: selecting an 9.5/ 10 Interstage
  209. How to reduce gain of this Tube Preamplifier ?
  210. looking for pp amp schematic without nfb
  211. Pseudo dual mono PS?
  212. WE404A drive 6L6 solution
  213. Looking for info on loudness control
  214. Tubes and minority carriers
  215. suggestions for 3 projects please
  216. DIY tube preamp kit
  217. M6 lamination: what is it?
  218. why is it that most tube projects uses copper sheetmetal?
  219. Sources in the Philippines / Manila
  220. Tube noise - Help
  221. Strange reverb circuit
  222. Tiny tube amp
  223. DC heating directly heated output valves
  224. Alps 250k in a Pas-3 Question
  225. 1st cap heats up...
  226. RCA VR Tube engineering data
  227. dropping heater voltage
  228. Please Help with Sound Valves M40 Monoblock Bias Adjustment Procedure!!!
  229. Old Sony SE OPT's /w 600r tap... cathode feedback maybe?
  230. Which is the poor man 45 tube?
  231. Audio Note Low Gain Quest Power Amplifier
  232. Quad II: Which resistors?
  233. Designing a preamp with two tubes
  234. ARC Classic 30 problem
  235. Why does the 6AS7 have such high Miller capacitance ?
  236. Driving an unusal Z=1k5-2k input spring reverb w/o tranny
  237. serching 5A6 beam power pentode data/curves/schematics for AF practice amp
  238. HPHV regulator measurement
  239. DHT Topology Comparison Question
  240. Secondary Tap of Power Transformer?
  241. Soft-clipping Circuit/tubecad
  242. lack of bass in a 6h30 design
  243. Difference between two novals
  244. C3g
  245. All Tube Stereo power amplifier
  246. what gas VR tube?
  247. KT88 schematic
  248. Help me understand the topologies here...
  249. Finished my Amp, Need to build a PS
  250. Push-Pull driver stage?

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