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  1. Driver stage load resistor
  2. More Edcor XSM10K/10K Specs
  3. DC filament
  4. driver stages
  5. Bay Area DIY is Cancelled Because....
  6. Is constant filament current better way to build amps?
  7. Next amp build - Trainwreck - Princeton - Deluxe ???
  8. Quicksilver M135 Output Transformers Color Code?
  9. Dynaco ST70 clone, tubes substitution question
  10. caddocks mk132: has anyone used them for tube projects?
  11. DIY Pro Audio Recording Gear - La2a, Pultec, more.
  12. size of filtering caps SS vs OTL tube
  13. Current rating and tube current draw
  14. NUCLON -- My first hybrid guitar amp
  15. PP splitters again
  16. preamp with output trannies.
  17. Is it the 6SN7 or me?
  18. My Kind of Guitar Tuner
  19. Regulating tube amp power supply - can Iget away with a simpler CLC filtering scheme?
  20. Manufacture date of 6SN7s
  21. simple 12AU7 cathode follower
  22. How's your bench, what's your favorite setup/tool ?
  23. Siemens H42 AM/FM receiver circuit diagram?
  24. 429A load lines
  25. Mu-stage on output
  26. My new project, 2 x KT88 60W amp
  27. Tube Amp Hum
  28. Modding MEIXING MC 3008
  29. crate vc 2110 schematic ???
  30. Will this work for an EL84 push pull?
  31. "Integrated" or "stand alone"
  32. Heater to cathode voltage limits in cascodes???
  33. some Japanese can help me? (OPT trafo winding)
  34. Quicksilver 8417 a class C amp?
  35. Newcomer, where to start?
  36. Benefits of Potted Output Transformers
  37. Transformer question
  38. 6AW6A, Unloaded
  39. Aikido PSU help
  40. Rectifier that doesn't need own filament supply?
  41. Plate to Cathode Cap -- what's this??
  42. Need Help Understanding/Optimising a Schematic
  43. Simple basic question quick
  44. problem on thorens PR15 (strange filaments circuity)
  45. My 1W 5687 SE Direct Coupled Power Amp
  46. VT-25 linestage + step-down trafo
  47. What to do with 803's
  48. Newbie: KT88 amp info needed
  49. 805 tube amp, uProcessor controlled
  50. Class A Tube BJT Hybrid
  51. John Broskie's enhanced T8
  52. Audio Research SP6 E
  53. Andr Charlin anybody got his Tube Amp
  54. Info needed - Shuguang SG120-C Integrated Amp
  55. Help with 6SN7 preamp
  56. 12b4 vs. aikido linestage
  57. KT88/6550 as Triode
  58. 6AU6WA triode connected as a line amp?
  59. A few basic noobie questions.
  60. Which connector for PSU/chassis B+ supply?
  61. Quad II-Forty schematic ?:
  62. Audio Research Manuals
  63. I was thinking
  64. silicon or tube rectifier?
  65. Is this OK for the Etude Preamp?
  66. gary pimm's latest self-biasing CCS circuit
  67. 46 tube pre
  68. BEZ T9B Intermittent problem
  69. Heathkit W-5M rebuild
  70. Masco MA25N repair
  71. Sunday's Project
  72. 5881- 6l6
  73. Gas-Rectifier power supply
  74. How to get more juice out of this shunt regulator
  75. Resistors on DHT Cathode
  76. Noise floor rise on heathkit W4-AMs when power supply transformers were swapped
  77. Help me finish up this SET project (multiple questions / ramblings)
  78. This Is Cool !!
  79. output bias servo
  80. Looking for dual power triodes.
  81. Need advice selecting a 2A3 design
  82. Feedback basics
  83. tubalizer..
  84. The 6b4g
  85. 6N6P Operating Points
  86. Lundahl+EL84 PP+concertina+input stage
  87. Help wanted for a truly loco project. (A Tube--gainclone hybrid guitar amp!)
  88. Looking for circuit of SE amp. for Eimac 100TH
  89. Counterpoint Sa-3000 Circuit Diagram
  90. compressor Faiirchild 670 DIY
  91. How much headroom for a choke---to stop it from humming?
  92. Bay Area Diy Festival
  93. Using Eagle for Tubes designs
  94. Worst that could happen?
  95. Identifying output tx.
  96. Small pre
  97. Cathode follower driver
  98. comment on this B+ supply
  99. ODD TUBES, what to look for?
  100. 2A3 SE and Edcorp tranny
  101. Differential amplifier with 12AX7
  102. Bogen Challenger CH30 Amplifier
  103. do I need to use a heatsink on a DN2540 in a B+ supply?
  104. Transformer, 10K 1:1 - which one?
  105. Where to find Blackgate Caps?
  106. Passive Pre-Amp causes huge power loss?
  107. Rubbish fluorescent tubes: Eterna Lighting (UK), GE (US)
  108. Melos TM90 ST schematic?
  109. My first tube preamplifier:)
  110. Opinions on the Conrad Johnson MV75 amplifier please.
  111. Favorite Tubes
  112. SS replacement for 83 tube ?
  113. AMC CVT 2030 Output Transformer.
  114. 6-ohm speaker to tube amp
  115. What tubes share the pinout with the 5687?
  116. SMPS for B+ discussion
  117. Building a 200W+ bass amp
  118. need help understanding voltage regulator schematic (using CCS) from Raleigh Audio
  119. SS No R No C Power Supply for Tubes
  120. FREDs? Replace 1N4003 rectifier diodes?
  121. Hot running regulated dc filament supply for aikido preamp
  122. B+ TX. overkill?
  123. 33 Power Pentode Design Pointers Needed
  124. What Wiki?
  125. help understanding updated DRD from J Elliano's site (using 6AN4 instead of 6n1p)
  126. Zen SE84TS
  127. 5687 tube
  128. Tube vs. Semiconducter rectification
  129. Bogen CHB35 Mods and Preamp ideas
  130. I Want To Build A 100+Watt per/channel Tube Poweramp
  131. Phonodude problem
  132. enjoythemusic's t-rex amp: where is the +70VDC tap?
  133. Earthing and how it effects sound.
  134. Rectifier question
  135. Help for SE Main Transformer
  136. 6D22S Getter Question
  137. Repair of a McIntosh MC225 power amp
  138. OPA627 with tube buffer....
  139. Bell Stereophonic 3030 help
  140. Choosing the line stage preamp.
  141. I Need Help, Mcintosh/Marantz 7 content
  142. For 45 > 845: selecting an 9.5/ 10 Interstage
  143. How to reduce gain of this Tube Preamplifier ?
  144. looking for pp amp schematic without nfb
  145. Pseudo dual mono PS?
  146. WE404A drive 6L6 solution
  147. Looking for info on loudness control
  148. Tubes and minority carriers
  149. suggestions for 3 projects please
  150. DIY tube preamp kit
  151. M6 lamination: what is it?
  152. why is it that most tube projects uses copper sheetmetal?
  153. Sources in the Philippines / Manila
  154. Tube noise - Help
  155. Strange reverb circuit
  156. Tiny tube amp
  157. DC heating directly heated output valves
  158. Alps 250k in a Pas-3 Question
  159. 1st cap heats up...
  160. RCA VR Tube engineering data
  161. dropping heater voltage
  162. Please Help with Sound Valves M40 Monoblock Bias Adjustment Procedure!!!
  163. Old Sony SE OPT's /w 600r tap... cathode feedback maybe?
  164. Which is the poor man 45 tube?
  165. Audio Note Low Gain Quest Power Amplifier
  166. Quad II: Which resistors?
  167. Designing a preamp with two tubes
  168. ARC Classic 30 problem
  169. Why does the 6AS7 have such high Miller capacitance ?
  170. Driving an unusal Z=1k5-2k input spring reverb w/o tranny
  171. serching 5A6 beam power pentode data/curves/schematics for AF practice amp
  172. HPHV regulator measurement
  173. DHT Topology Comparison Question
  174. Secondary Tap of Power Transformer?
  175. Soft-clipping Circuit/tubecad
  176. lack of bass in a 6h30 design
  177. Difference between two novals
  178. C3g
  179. All Tube Stereo power amplifier
  180. what gas VR tube?
  181. KT88 schematic
  182. Help me understand the topologies here...
  183. Finished my Amp, Need to build a PS
  184. Push-Pull driver stage?
  185. Floating the heaters
  186. Replacing Power Transformer
  187. When car audio & tubes collide...
  188. 6N6P and 6SN7 Operating point suggestions
  189. NOS pF capacitors voltage rating?
  190. Tubes in Vietnam
  191. Passive pre order?
  192. layout help
  193. junkbox amp help
  194. required specs of an input step up transformer, into a 45, to allow it drive an 845
  195. 6as7 SRPP output stage
  196. Bias range and selenium rectifier
  197. OTL's and aircraft transformers
  198. PSE EL34 - valve rectification question
  199. A 2a3 Amplifier
  200. James Transformer BS
  201. Plate Voltage on 12ax7a
  202. Parallel Triodes and Load Lines
  203. Steve Bench OTL
  204. High power P-P EL34/6550/KT88 amp suggestions
  205. Stepped attenuators - break before make?
  206. audionote 144 OPT comment pls...
  207. KT88 and Hammond Transformer Schematics
  208. How do I know that my measured AC voltage is precise?
  209. 6C33B-C push pull with output transformer
  210. EL84 grid voltage?
  211. seperate power supply?
  212. Mysterious tektronix power supply
  213. tube amp subwoofer hum problem
  214. How to test transformer's current rating?
  215. Death/Black Metal sound on Crate 6212
  216. 4654/4699 pentodes
  217. Output tubes on a Marshall JCM900
  218. vacuum tube logic gate
  219. Screen current
  220. Any tube-sleuths out there know who made these Daystrom tubes?
  221. With this meter reading, enough to know Fuse is the culprit?
  222. need comments on amp design
  223. KEF/Celestion speakers for tube use...
  224. Another cheap fix - MOT as plate choke.
  225. XAM Mark II B
  226. How to test voltages on secondaries?
  227. Audio innovation L1 valve replacement
  228. Is this in-rush current?
  229. TETRODE amplifiers
  230. Audio Shop Eifl Corporation
  231. 6sn7 Buffer
  232. Marantz 8b operating voltages
  233. amplifier with 813 valves
  234. Changing plate resistor in live circuitry.
  235. 2xEL34 vs. 4xEL84 vs. 2x6L6 vs. 4x6V6
  236. KT88 drivers
  237. Simple Hybrid SE EL84 UL amp.. comments please.
  238. max input impedance for // el84's and other ?
  239. Please Help.. PCL81
  240. Some troubles with PSUD. A little help please !
  241. Why D getters?
  242. Help me information of the tubes?
  243. Questions about this line stage
  244. 5Z4P rectifier tube question
  245. Need help from Aikido builder
  246. Aikesi_el34҇һ̨
  247. Direct heating triodes are really better?
  248. Audio Reality is back, in digital format
  249. Stoetkit 25W integrated amp
  250. Switchable stages with Tubelabs hybrid MOSFET/ 845 SE amp?

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