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  1. Convert EL84 to 6V6? Anyone try this?
  2. PC96
  3. Ultrapath output transformers
  4. Grant RIAA phono with 12AX7/ECC83
  5. Tube VS SS voltage regulators - any advantages?
  6. Ra-a??
  7. Help with my el509 amp almost done but with one problem.
  8. McIntosh chassis help needed
  9. Tube Voltage Regulator Design
  10. DC Tube Amplifiers
  11. Coupling cap voltage rating
  12. Anyone experienced in the 76 tube?
  13. aikido thump
  14. bypassing preamp board in integrated amp
  15. Mallory FP 2x30/500 for Scott LX-72 - NOOB
  16. is it really required to use carbon comp for grid stoppers?
  17. How much trickle current can fixed bias cathode batteries stand?
  18. Who is the administrator?
  19. LM329 as voltage reference in a CCS.
  20. Euridice Preamp with 5842 and LL1660
  21. Trans. alignments
  22. Audio Note M3 Kit modification
  23. Has anyone simulated an "Aikido" amplifier?
  24. Upgrading ST70 PS w/ SS question
  25. 6N1 Chinese tube and others
  26. 12AT7 Linestage design
  27. ECF80 instead of 7199
  28. Modifying a tube tester into a curve tracer (oscilloscope X/Y outputs) ?
  29. 6922 vs 6SN7
  30. Transformer DCR's
  31. ferrite beads v. grid resistor
  32. What went wrong with my amp? Bass driver strange movement.
  33. Toccata Phono Preamp
  34. Drawbacks of Parafeed?
  35. aikido problem
  36. RS253 giant SE monoblock (Chinese)
  37. Plate chokes & Power chokes
  38. 10uF filter cap too small? PSU schematic inside
  39. HOT ROD DELUXE: CRACKLE...POP...what to do?
  40. converting Baldwin organ amp to guitar
  41. best amp for rock n roll
  42. quick question about tube relays
  43. Yeo's Simple EL84 with a twist
  44. ST-70 OPT, A-470 question
  45. meixing 805 tube amp problems
  46. Advice for NOOBie - Dad's Scott LK-72
  47. Peavey Valve King 112
  48. KT66 SE amp, grid current or not?
  49. 269EX in a champ?
  50. How do I achieve more output power?
  51. Driver stage load resistor
  52. More Edcor XSM10K/10K Specs
  53. DC filament
  54. driver stages
  55. Bay Area DIY is Cancelled Because....
  56. Is constant filament current better way to build amps?
  57. Next amp build - Trainwreck - Princeton - Deluxe ???
  58. Quicksilver M135 Output Transformers Color Code?
  59. Dynaco ST70 clone, tubes substitution question
  60. caddocks mk132: has anyone used them for tube projects?
  61. DIY Pro Audio Recording Gear - La2a, Pultec, more.
  62. size of filtering caps SS vs OTL tube
  63. Current rating and tube current draw
  64. NUCLON -- My first hybrid guitar amp
  65. PP splitters again
  66. preamp with output trannies.
  67. Is it the 6SN7 or me?
  68. My Kind of Guitar Tuner
  69. Regulating tube amp power supply - can Iget away with a simpler CLC filtering scheme?
  70. Manufacture date of 6SN7s
  71. simple 12AU7 cathode follower
  72. How's your bench, what's your favorite setup/tool ?
  73. Siemens H42 AM/FM receiver circuit diagram?
  74. 429A load lines
  75. Mu-stage on output
  76. My new project, 2 x KT88 60W amp
  77. Tube Amp Hum
  78. Modding MEIXING MC 3008
  79. crate vc 2110 schematic ???
  80. Will this work for an EL84 push pull?
  81. "Integrated" or "stand alone"
  82. Heater to cathode voltage limits in cascodes???
  83. some Japanese can help me? (OPT trafo winding)
  84. Quicksilver 8417 a class C amp?
  85. Newcomer, where to start?
  86. Benefits of Potted Output Transformers
  87. Transformer question
  88. 6AW6A, Unloaded
  89. Aikido PSU help
  90. Rectifier that doesn't need own filament supply?
  91. Plate to Cathode Cap -- what's this??
  92. Need Help Understanding/Optimising a Schematic
  93. Simple basic question quick
  94. problem on thorens PR15 (strange filaments circuity)
  95. My 1W 5687 SE Direct Coupled Power Amp
  96. VT-25 linestage + step-down trafo
  97. What to do with 803's
  98. Newbie: KT88 amp info needed
  99. 805 tube amp, uProcessor controlled
  100. Class A Tube BJT Hybrid
  101. John Broskie's enhanced T8
  102. Audio Research SP6 E
  103. André Charlin anybody got his Tube Amp
  104. Info needed - Shuguang SG120-C Integrated Amp
  105. Help with 6SN7 preamp
  106. 12b4 vs. aikido linestage
  107. KT88/6550 as Triode
  108. 6AU6WA triode connected as a line amp?
  109. A few basic noobie questions.
  110. Which connector for PSU/chassis B+ supply?
  111. Quad II-Forty schematic ?:
  112. Audio Research Manuals
  113. I was thinking
  114. silicon or tube rectifier?
  115. Is this OK for the Etude Preamp?
  116. gary pimm's latest self-biasing CCS circuit
  117. 46 tube pre
  118. BEZ T9B Intermittent problem
  119. Heathkit W-5M rebuild
  120. Masco MA25N repair
  121. Sunday's Project
  122. 5881- 6l6
  123. Gas-Rectifier power supply
  124. How to get more juice out of this shunt regulator
  125. Resistors on DHT Cathode
  126. Noise floor rise on heathkit W4-AMs when power supply transformers were swapped
  127. Help me finish up this SET project (multiple questions / ramblings)
  128. This Is Cool !!
  129. output bias servo
  130. Looking for dual power triodes.
  131. Need advice selecting a 2A3 design
  132. Feedback basics
  133. tubalizer..
  134. The 6b4g
  135. 6N6P Operating Points
  136. Lundahl+EL84 PP+concertina+input stage
  137. Help wanted for a truly loco project. (A Tube--gainclone hybrid guitar amp!)
  138. Looking for circuit of SE amp. for Eimac 100TH
  139. Counterpoint Sa-3000 Circuit Diagram
  140. compressor Faiirchild 670 DIY
  141. How much headroom for a choke---to stop it from humming?
  142. Bay Area Diy Festival
  143. Using Eagle for Tubes designs
  144. Worst that could happen?
  145. Identifying output tx.
  146. Small pre
  147. Cathode follower driver
  148. comment on this B+ supply
  149. ODD TUBES, what to look for?
  150. 2A3 SE and Edcorp tranny
  151. Differential amplifier with 12AX7
  152. Bogen Challenger CH30 Amplifier
  153. do I need to use a heatsink on a DN2540 in a B+ supply?
  154. Transformer, 10K 1:1 - which one?
  155. Where to find Blackgate Caps?
  156. Passive Pre-Amp causes huge power loss?
  157. Rubbish fluorescent tubes: Eterna Lighting (UK), GE (US)
  158. Melos TM90 ST schematic?
  159. My first tube preamplifier:)
  160. Opinions on the Conrad Johnson MV75 amplifier please.
  161. Favorite Tubes
  162. SS replacement for 83 tube ?
  163. AMC CVT 2030 Output Transformer.
  164. 6-ohm speaker to tube amp
  165. What tubes share the pinout with the 5687?
  166. SMPS for B+ discussion
  167. Building a 200W+ bass amp
  168. need help understanding voltage regulator schematic (using CCS) from Raleigh Audio
  169. SS No R No C Power Supply for Tubes
  170. FREDs? Replace 1N4003 rectifier diodes?
  171. Hot running regulated dc filament supply for aikido preamp
  172. B+ TX. overkill?
  173. 33 Power Pentode Design Pointers Needed
  174. What Wiki?
  175. help understanding updated DRD from J Elliano's site (using 6AN4 instead of 6n1p)
  176. Zen SE84TS
  177. 5687 tube
  178. Tube vs. Semiconducter rectification
  179. Bogen CHB35 Mods and Preamp ideas
  180. I Want To Build A 100+Watt per/channel Tube Poweramp
  181. Phonodude problem
  182. enjoythemusic's t-rex amp: where is the +70VDC tap?
  183. Earthing and how it effects sound.
  184. Rectifier question
  185. Help for SE Main Transformer
  186. 6D22S Getter Question
  187. Repair of a McIntosh MC225 power amp
  188. OPA627 with tube buffer....
  189. Bell Stereophonic 3030 help
  190. Choosing the line stage preamp.
  191. I Need Help, Mcintosh/Marantz 7 content
  192. For 45 > 845: selecting an 9.5/ 10 Interstage
  193. How to reduce gain of this Tube Preamplifier ?
  194. looking for pp amp schematic without nfb
  195. Pseudo dual mono PS?
  196. WE404A drive 6L6 solution
  197. Looking for info on loudness control
  198. Tubes and minority carriers
  199. suggestions for 3 projects please
  200. DIY tube preamp kit
  201. M6 lamination: what is it?
  202. why is it that most tube projects uses copper sheetmetal?
  203. Sources in the Philippines / Manila
  204. Tube noise - Help
  205. Strange reverb circuit
  206. Tiny tube amp
  207. DC heating directly heated output valves
  208. Alps 250k in a Pas-3 Question
  209. 1st cap heats up...
  210. RCA VR Tube engineering data
  211. dropping heater voltage
  212. Please Help with Sound Valves M40 Monoblock Bias Adjustment Procedure!!!
  213. Old Sony SE OPT's /w 600r tap... cathode feedback maybe?
  214. Which is the poor man 45 tube?
  215. Audio Note Low Gain Quest Power Amplifier
  216. Quad II: Which resistors?
  217. Designing a preamp with two tubes
  218. ARC Classic 30 problem
  219. Why does the 6AS7 have such high Miller capacitance ?
  220. Driving an unusal Z=1k5-2k input spring reverb w/o tranny
  221. serching 5A6 beam power pentode data/curves/schematics for AF practice amp
  222. HPHV regulator measurement
  223. DHT Topology Comparison Question
  224. Secondary Tap of Power Transformer?
  225. Soft-clipping Circuit/tubecad
  226. lack of bass in a 6h30 design
  227. Difference between two novals
  228. C3g
  229. All Tube Stereo power amplifier
  230. what gas VR tube?
  231. KT88 schematic
  232. Help me understand the topologies here...
  233. Finished my Amp, Need to build a PS
  234. Push-Pull driver stage?
  235. Floating the heaters
  236. Replacing Power Transformer
  237. When car audio & tubes collide...
  238. 6N6P and 6SN7 Operating point suggestions
  239. NOS pF capacitors voltage rating?
  240. Tubes in Vietnam
  241. Passive pre order?
  242. layout help
  243. junkbox amp help
  244. required specs of an input step up transformer, into a 45, to allow it drive an 845
  245. 6as7 SRPP output stage
  246. Bias range and selenium rectifier
  247. OTL's and aircraft transformers
  248. PSE EL34 - valve rectification question
  249. A 2a3 Amplifier
  250. James Transformer BS

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