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  1. H&K Tubeman Circuit Questions (added schematics!)
  2. Marshalls: Why did 600V B+ become 470V?
  3. Raising filament winding above cathode with a EZ81 in the circuit OK?
  4. Problem with Beard Audio
  5. 100K pot in a preamp?
  6. Motor Run Capacitor
  7. Power transformer for 6883B tube uses?
  8. EAGLE PCB help with socket on it
  9. Rca Mi-38188
  10. C- Battery Supply
  11. Seperating Preamp from Amp in Integrated Amps
  12. Wind my own output transformer for 100w bass amp
  13. Please help me in getting rid of the buzz.
  14. Tube Phono stage dilema
  15. Grounding with single tap secondary...
  16. VTL - Manley stereo 75
  17. What about KT100 in SE ?
  18. Tube amplifier kit needed to drive low efficiency speaker
  19. feeling very pleased with myself
  20. Quicksilver Retube
  21. My Totem Arro 4 ohm load on KT-88 based amp
  22. using flash camera (and maybe laptop screen or fluorescent) inverters to power tubes
  23. for fans of the EL38 - the E3375
  24. 811a Opt
  25. Guitar amp for Wes is running!
  26. Pure class-A or class AB?
  27. 12B4 PP Full Differential Amp Notion
  28. My opinion on Audio Note M10 schematic - Japan version
  29. B&K 650 tubecharts
  30. Help, I need your advice - What Next?
  31. Sloppy, Unreadable, Childlike schematics
  32. Anybody going to tomorrow's NVCF fair in Leamington?
  33. Randall RGT 100 Amp Problem
  34. Pete's SE E-Linear
  35. 0A2 or 0D3 ?
  36. Counterpoint SA7 modification.. shottky diodes.. thoughts?
  37. LTP feedback
  38. Need help with my super six...
  39. EL509 as a CF
  40. SE Diode
  41. 6FD7, 6BM8 or other
  42. My OLD Project....... cheap tube audio project!!!
  43. tube noise
  44. Fisher 400 questions
  45. RL12P35 amplifier
  46. 6AS7 ppp
  47. 6j5 dc coupled to 12b4a as 2a3 driver
  48. '81 Twin problems
  49. The sound of different EL34īs.
  50. Output transformer and FB
  51. Triode curves for 6AU5
  52. 26/el-84 amp possible..?
  53. Vaic 52B monos
  54. Hour Meter for a Tube Amp..
  55. volume pot replacement
  56. Any Ampeg SVT-II (non-pro) schematics???
  57. Ampex 600
  58. Tubing Testing...how are these numbers?
  59. No-R No-C Power Supply
  60. Are my Speakers efficient enough for my Amp?
  61. doesn't sound quite right
  62. 6DJ8 alternates?
  63. Is this the dumbest question?
  64. Fuse between B+ and output transformer?
  65. Telefunken Double Label Error...Ever seen this?
  66. 300B Summer Build Question
  67. 1,25kW tube amplifier/modulator
  68. 12sn7 heater-cathode voltage
  69. Toroidal output transformers with screen drive- why not?
  70. Help With 6v6 Spice Model
  71. Different 5AR4's have different voltages and warm up time.
  72. Edcor OPT in S5 Electronics K-16LS kit?
  73. SRPP Powersupply, replace R with choke ?
  74. First tube amp
  75. Best low-signal direct heated triodes?
  76. 25-position switched attenuator using a pair of 5-position switches?
  77. Help with dead Jadis Defy7 Amp
  78. Bring test points to chassis - Tubelab
  79. Heads up! New unbuilt Dynaco ST-70 kit on ebay
  80. Remote control for integrated tube amp
  81. EL34 pp "fixed" bias is wandering
  82. US sources Russian Surplus
  83. 6550 SE class project (continued)
  84. Convert RCA tuner/pre to high perf AM only
  85. Metal Can 6CA7s
  86. Bypassing B+ in PP amp
  87. Tube shunt regulator for phono amp
  88. Triplett tube tester help
  89. Motor run Caps Question
  90. speaker that can be driven by tube amp
  91. Which perf board?
  92. Looking for schematic/info for a Knight KN 3050 PA Amp
  93. Need help with volume control.
  94. Flame triodes!
  95. make OPT
  96. Tube GU50 made in Russia
  97. Expectations of new tube specs
  98. DC on preamp input
  99. We're up and going!
  100. Putting serial number on tubes
  101. Which of these tubes is best?
  102. Stepped attenuator resistor calculation software
  103. Help with PSU for tube DAC output stage
  104. single-tube (6GN8) amplifier?
  105. Dukane schematic needed
  106. Bloody pinouts!
  107. Testing 5651WA on the bench
  108. phase splitter concerns ?
  109. phono pre RIAA 2001
  110. Quick output transformer wiring question
  111. Can I.....
  112. Cathode FB P.P. Strange behaviour.
  113. Historic Valve Assembly Vids Mullard Content
  114. Unknown output impedance
  115. Any matching in 12AT7 sections? (SimpleSE)
  116. Over-voltage on heaters...
  117. Stray capacitance of CCS
  118. CCS Design for DHT Filaments
  119. coupling cap value help for tubelabSE
  120. YAQIN MC-10L to Klipsch B-3 Speakers
  121. Sonic effects of tubes
  122. Gubin Valve Stereo Amplifier Question
  123. 6J5 Shootout - which one's best?
  124. Chinese Tube Amps?
  125. 26 DHT users please comment on what you built & use.
  126. Guitar amp project report
  127. auricap Vs musicap (Another Cap Question)
  128. Help with splitter design for 7591 PP
  129. Question regarding PS ripple in guitar amps - TubeLab?
  130. Tron Seven
  131. blue glow on one channel
  132. Suitable Power Trans for 6gw8/6bm8/el84
  133. Dynaco Pas 3 Hiss from HV regulator
  134. PS Problem: How do I Reduce Voltage?
  135. Got the build itch again. 80w kt88
  136. lm317 CCS question
  137. LM334z
  138. Parafeeding a Tetrode
  139. Differential stage biasing choice
  140. Got an overshoot problem.
  141. Help! What could possibly be wrong?
  142. Noise - 6J5 - 71a -300B amp
  143. crude, simple and powerful PP-amplifier
  144. What's the appeal of type 80 rectifiers?
  145. Guitar amp layout second thoughts
  146. 6N7 PP amplifier
  147. 300 KW tube audio amplifire-modulator
  148. Weird amp on ebay
  149. which type of rubber cushion under transformers?
  150. 12at7 LTP CCS
  151. Which value of a potentiometer
  152. Strange circuit - heater hum opt feedback?
  153. Aikido question
  154. Tubelab SE diode substitute
  155. Copland CTA-402 Phono Section Comments
  156. modified sine wave power inverter
  157. Rebiasing my DSL-100
  158. My EL84 SE
  159. K-16LS kit Assembled and Working
  160. Claus Byrith 30W PP
  161. Aikido pre and class T amplifier ...for a newby
  162. Best replacement for Black Gate WKZ?
  163. DIY Jukebox!!
  164. Partial feedback confusion
  165. Anyone used the 7C7 loktal pentode?
  166. Is vacuumtubes.net still in business?
  167. Rectifier Tubes
  168. music angel kt88 tube amp schmetic needed
  169. Next project suggestions
  170. Unpotted Peerless 16309 OPT from Heath W5m
  171. 6au6 Cf
  172. Direct-Coupling Question
  173. Help on CCS PP differential driver stage for SE 845 amp
  174. I'm Looking for this Similar Schematic !
  175. ECL86 preamp critique please
  176. Low cost 6AV5 design questions (long)
  177. Got my tube spice models, and tubed CD player page back on the air
  178. Vsac 2008?
  179. How hot do Hammond chokes get?
  180. Transformer current question
  181. TubelabSE - best MOSFET choice?
  182. WTD: Reviewer/Writer For DIY Articles
  183. photomultiplier tube - what is this???
  184. Trace Elliot Tube replacment
  185. fun idea: cameras and tubes!
  186. Quicksilver
  187. EI-75 End Bells
  188. Svetlana vs. Winged C
  189. Tube Amp Links
  190. McMartin MA-20 mods
  191. Power-tube grid-leak bias
  192. Best/favorite CF NOS noval twin triode?
  193. How can I calculate voltage over cathode resistor?
  194. Grid bias with Class A SE ?
  195. QUADII with DHT
  196. My First Tube Amp
  197. RH84 vs Magnavox SE?
  198. Rectifier and amp heaters on one supply?
  199. OPT impedance vs. speaker
  200. Power Supply help
  201. Problem with Stealth clone (12A6)
  202. phono stage hiss
  203. Lafayette LT-100 and 6AQ8 tubes
  204. Input potentiometer selection
  205. VSAC 2008 Amp Class
  206. Searching for simple 12bh7/E80cc pre schematic
  207. filament AC vs DC
  208. Novice PS Question: Diode Dilemma
  209. Custom Power Transformer Supplier UK ?
  210. lowering AC heater voltage help?
  211. 60 hz hum, what causes those?
  212. Problem with my ST70 build
  213. S-5 16LS tube amp use with 8 ohm speakers
  214. Yaqin 300b
  215. I'm going in.....
  216. noisy rectifier tube
  217. Quad II Output transformer rewinding question
  218. screen-drive (g2 driven) plate curves spacing linear!
  219. Strange feedback method
  220. Trio W-45a Amp-
  221. Hammond Power Transformer Buzz...
  222. 6v6 push pull guitar amp schematic sought
  223. Tube DI Help, Please: Substitutions
  224. Harmon Kardon Galaxy BA-150
  225. Velleman K8010 monoblock tube amplifiers
  226. First Project Finished-Tubelab Simple SE
  227. My 6S19P Linestage
  228. EL34 recommendations
  229. Edcor CXPP100-MS-5K- anyone used this (or similar 100W) output transformer?
  230. Bypass 2x0B3 tube cap value ?
  231. EF80 vs EF86
  232. Decware MODEL SE84C-DIY
  233. ST35 voltages WAY too high!
  234. How Do "Heat Fins" Work In a Vacuum?
  235. Acrosound Ultra-Linear OT catalog
  236. Simple Questions: Diodes and Heaters
  237. Recommend an input stage triode please
  238. Copper patinization?
  239. V-m 560a
  240. Anybody dealt with high-endstore.com?
  241. Diodes On Rectifier Question
  242. Stray hum pickup *preamp* cathode R-bias vs. battery bias & 12AU7vs.5687
  243. looking for a website...
  244. Simple 45/2A3 schematic error?
  245. Plate load for push-pull
  246. Hybrid regulator
  247. Hybrid Graetz Bridge
  248. JCM 900 100 Watt Power Trans Specs..
  249. My first amplifier - 6n3c-E
  250. Power supply problem

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