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  1. Edcor OPT in S5 Electronics K-16LS kit?
  2. SRPP Powersupply, replace R with choke ?
  3. First tube amp
  4. Best low-signal direct heated triodes?
  5. 25-position switched attenuator using a pair of 5-position switches?
  6. Help with dead Jadis Defy7 Amp
  7. Bring test points to chassis - Tubelab
  8. Heads up! New unbuilt Dynaco ST-70 kit on ebay
  9. Remote control for integrated tube amp
  10. EL34 pp "fixed" bias is wandering
  11. US sources Russian Surplus
  12. 6550 SE class project (continued)
  13. Convert RCA tuner/pre to high perf AM only
  14. Metal Can 6CA7s
  15. Bypassing B+ in PP amp
  16. Tube shunt regulator for phono amp
  17. Triplett tube tester help
  18. Motor run Caps Question
  19. speaker that can be driven by tube amp
  20. Which perf board?
  21. Looking for schematic/info for a Knight KN 3050 PA Amp
  22. Need help with volume control.
  23. Flame triodes!
  24. make OPT
  25. Tube GU50 made in Russia
  26. Expectations of new tube specs
  27. DC on preamp input
  28. We're up and going!
  29. Putting serial number on tubes
  30. Which of these tubes is best?
  31. Stepped attenuator resistor calculation software
  32. Help with PSU for tube DAC output stage
  33. single-tube (6GN8) amplifier?
  34. Dukane schematic needed
  35. Bloody pinouts!
  36. Testing 5651WA on the bench
  37. phase splitter concerns ?
  38. phono pre RIAA 2001
  39. Quick output transformer wiring question
  40. Can I.....
  41. Cathode FB P.P. Strange behaviour.
  42. Historic Valve Assembly Vids Mullard Content
  43. Unknown output impedance
  44. Any matching in 12AT7 sections? (SimpleSE)
  45. Over-voltage on heaters...
  46. Stray capacitance of CCS
  47. CCS Design for DHT Filaments
  48. coupling cap value help for tubelabSE
  49. YAQIN MC-10L to Klipsch B-3 Speakers
  50. Sonic effects of tubes
  51. Gubin Valve Stereo Amplifier Question
  52. 6J5 Shootout - which one's best?
  53. Chinese Tube Amps?
  54. 26 DHT users please comment on what you built & use.
  55. Guitar amp project report
  56. auricap Vs musicap (Another Cap Question)
  57. Help with splitter design for 7591 PP
  58. Question regarding PS ripple in guitar amps - TubeLab?
  59. Tron Seven
  60. blue glow on one channel
  61. Suitable Power Trans for 6gw8/6bm8/el84
  62. Dynaco Pas 3 Hiss from HV regulator
  63. PS Problem: How do I Reduce Voltage?
  64. Got the build itch again. 80w kt88
  65. lm317 CCS question
  66. LM334z
  67. Parafeeding a Tetrode
  68. Differential stage biasing choice
  69. Got an overshoot problem.
  70. Help! What could possibly be wrong?
  71. Noise - 6J5 - 71a -300B amp
  72. crude, simple and powerful PP-amplifier
  73. What's the appeal of type 80 rectifiers?
  74. Guitar amp layout second thoughts
  75. 6N7 PP amplifier
  76. 300 KW tube audio amplifire-modulator
  77. Weird amp on ebay
  78. which type of rubber cushion under transformers?
  79. 12at7 LTP CCS
  80. Which value of a potentiometer
  81. Strange circuit - heater hum opt feedback?
  82. Aikido question
  83. Tubelab SE diode substitute
  84. Copland CTA-402 Phono Section Comments
  85. modified sine wave power inverter
  86. Rebiasing my DSL-100
  87. My EL84 SE
  88. K-16LS kit Assembled and Working
  89. Claus Byrith 30W PP
  90. Aikido pre and class T amplifier ...for a newby
  91. Best replacement for Black Gate WKZ?
  92. DIY Jukebox!!
  93. Partial feedback confusion
  94. Anyone used the 7C7 loktal pentode?
  95. Is vacuumtubes.net still in business?
  96. Rectifier Tubes
  97. music angel kt88 tube amp schmetic needed
  98. Next project suggestions
  99. Unpotted Peerless 16309 OPT from Heath W5m
  100. 6au6 Cf
  101. Direct-Coupling Question
  102. Help on CCS PP differential driver stage for SE 845 amp
  103. I'm Looking for this Similar Schematic !
  104. ECL86 preamp critique please
  105. Low cost 6AV5 design questions (long)
  106. Got my tube spice models, and tubed CD player page back on the air
  107. Vsac 2008?
  108. How hot do Hammond chokes get?
  109. Transformer current question
  110. TubelabSE - best MOSFET choice?
  111. WTD: Reviewer/Writer For DIY Articles
  112. photomultiplier tube - what is this???
  113. Trace Elliot Tube replacment
  114. fun idea: cameras and tubes!
  115. Quicksilver
  116. EI-75 End Bells
  117. Svetlana vs. Winged C
  118. Tube Amp Links
  119. McMartin MA-20 mods
  120. Power-tube grid-leak bias
  121. Best/favorite CF NOS noval twin triode?
  122. How can I calculate voltage over cathode resistor?
  123. Grid bias with Class A SE ?
  124. QUADII with DHT
  125. My First Tube Amp
  126. RH84 vs Magnavox SE?
  127. Rectifier and amp heaters on one supply?
  128. OPT impedance vs. speaker
  129. Power Supply help
  130. Problem with Stealth clone (12A6)
  131. phono stage hiss
  132. Lafayette LT-100 and 6AQ8 tubes
  133. Input potentiometer selection
  134. VSAC 2008 Amp Class
  135. Searching for simple 12bh7/E80cc pre schematic
  136. filament AC vs DC
  137. Novice PS Question: Diode Dilemma
  138. Custom Power Transformer Supplier UK ?
  139. lowering AC heater voltage help?
  140. 60 hz hum, what causes those?
  141. Problem with my ST70 build
  142. S-5 16LS tube amp use with 8 ohm speakers
  143. Yaqin 300b
  144. I'm going in.....
  145. noisy rectifier tube
  146. Quad II Output transformer rewinding question
  147. screen-drive (g2 driven) plate curves spacing linear!
  148. Strange feedback method
  149. Trio W-45a Amp-
  150. Hammond Power Transformer Buzz...
  151. 6v6 push pull guitar amp schematic sought
  152. Tube DI Help, Please: Substitutions
  153. Harmon Kardon Galaxy BA-150
  154. Velleman K8010 monoblock tube amplifiers
  155. First Project Finished-Tubelab Simple SE
  156. My 6S19P Linestage
  157. EL34 recommendations
  158. Edcor CXPP100-MS-5K- anyone used this (or similar 100W) output transformer?
  159. Bypass 2x0B3 tube cap value ?
  160. EF80 vs EF86
  161. Decware MODEL SE84C-DIY
  162. ST35 voltages WAY too high!
  163. How Do "Heat Fins" Work In a Vacuum?
  164. Acrosound Ultra-Linear OT catalog
  165. Simple Questions: Diodes and Heaters
  166. Recommend an input stage triode please
  167. Copper patinization?
  168. V-m 560a
  169. Anybody dealt with high-endstore.com?
  170. Diodes On Rectifier Question
  171. Stray hum pickup *preamp* cathode R-bias vs. battery bias & 12AU7vs.5687
  172. looking for a website...
  173. Simple 45/2A3 schematic error?
  174. Plate load for push-pull
  175. Hybrid regulator
  176. Hybrid Graetz Bridge
  177. JCM 900 100 Watt Power Trans Specs..
  178. My first amplifier - 6n3c-E
  179. Power supply problem
  180. Grid choke as I/V?
  181. Hammond PR20
  182. 6JN6 screen-drive (g2 driven) plate curves?
  183. Another compactron PP output
  184. 6922 transformer coupled
  185. Beam Deflection Tube Limiter
  186. 6LW6 bias points
  187. Dynaco SCA-35 or Sherwood S5000 iV
  188. SE 6550 class project (continued)
  189. gibson amp lp JR
  190. EL821 / 6CH6 triode curves?
  191. Ground wire adds hum to Harmony H-400A AC/DC amp
  192. "magic" phase splitter for SimpleP-P
  193. Harmon Kardon tube amp kit testing
  194. Did I hurt this capacitor?
  195. (newb) Why no white (-) leads on power trafo
  196. Ruined transformer?
  197. My Tabor Clone is finished.
  198. first build 6em7 and it works
  199. Cleaning up baked enamel/painted finishes
  200. panel meters
  201. Highs roll off
  202. scratch build EAR834p
  203. Silvertone Organ Amp
  204. El156se
  205. One more hybrid idea
  206. Can Anyone figure this?
  207. "Mighty Mite" Single Ended Amplifier
  208. old question - lost answer 6AS7 SE amp
  209. My KT88 SE project
  210. Motorola OPT
  211. Weird Input transformer hum.
  212. cascode vs asymmetrical cathode coupled
  213. music angel 845 SET
  214. Help! My amp stopped singing...
  215. LTP CCS IXYS with 10m45s opinions
  216. Boozhound Choke Tail Pair for HiFi
  217. Bass guitar amp...
  218. 5718 subminiture tube?
  219. fixed bias for push pull tube amps
  220. EC86 and phono
  221. Power Transformer mystery lead....
  222. Bias measurements 6L6
  223. 0A3 Light
  224. Equivalent to Tango NC-10 IT
  225. Ammeter wiring?
  226. Highest Practical Primary Z in OPT?
  227. Ampex 6v6 PP Modifications
  228. Variability of RIAA eq with tube characteristics?
  229. 807/350B/6L6 PP amps PSU ?
  230. Need Help For Tube Amp
  231. ECC83 300B Loftin White amp
  232. Hashimoto and the wonderful 45
  233. Capacitor identification–old PIO?
  234. Heathkit variac
  235. E80L pentode mode as driver?
  236. Transformer repair
  237. How many ga for chassis wire?
  238. 807 Guitar Amplifier
  239. I want to MOD - help?
  240. What About Beam Deflection Tubes?
  241. Capacitor
  242. Placement of Ultralinear Tap On Homemade Transformer
  243. Differential stage with CCS in cathode
  244. Directly heated Cathode/insulation question
  245. "Dirt Cheap SE" 6BM8 spud amp
  246. isolation transformer won't supply filiments - 1968 Harmony H400A tube guitar amp
  247. Single-end Power amp with tubes
  248. Input pot question
  249. Need help putting 6Z4 into PSU Designer
  250. SimpleSE Under Chassis Mounting

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