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  1. doesn't sound quite right
  2. 6DJ8 alternates?
  3. Is this the dumbest question?
  4. Fuse between B+ and output transformer?
  5. Telefunken Double Label Error...Ever seen this?
  6. 300B Summer Build Question
  7. 1,25kW tube amplifier/modulator
  8. 12sn7 heater-cathode voltage
  9. Toroidal output transformers with screen drive- why not?
  10. Help With 6v6 Spice Model
  11. Different 5AR4's have different voltages and warm up time.
  12. Edcor OPT in S5 Electronics K-16LS kit?
  13. SRPP Powersupply, replace R with choke ?
  14. First tube amp
  15. Best low-signal direct heated triodes?
  16. 25-position switched attenuator using a pair of 5-position switches?
  17. Help with dead Jadis Defy7 Amp
  18. Bring test points to chassis - Tubelab
  19. Heads up! New unbuilt Dynaco ST-70 kit on ebay
  20. Remote control for integrated tube amp
  21. EL34 pp "fixed" bias is wandering
  22. US sources Russian Surplus
  23. 6550 SE class project (continued)
  24. Convert RCA tuner/pre to high perf AM only
  25. Metal Can 6CA7s
  26. Bypassing B+ in PP amp
  27. Tube shunt regulator for phono amp
  28. Triplett tube tester help
  29. Motor run Caps Question
  30. speaker that can be driven by tube amp
  31. Which perf board?
  32. Looking for schematic/info for a Knight KN 3050 PA Amp
  33. Need help with volume control.
  34. Flame triodes!
  35. make OPT
  36. Tube GU50 made in Russia
  37. Expectations of new tube specs
  38. DC on preamp input
  39. We're up and going!
  40. Putting serial number on tubes
  41. Which of these tubes is best?
  42. Stepped attenuator resistor calculation software
  43. Help with PSU for tube DAC output stage
  44. single-tube (6GN8) amplifier?
  45. Dukane schematic needed
  46. Bloody pinouts!
  47. Testing 5651WA on the bench
  48. phase splitter concerns ?
  49. phono pre RIAA 2001
  50. Quick output transformer wiring question
  51. Can I.....
  52. Cathode FB P.P. Strange behaviour.
  53. Historic Valve Assembly Vids Mullard Content
  54. Unknown output impedance
  55. Any matching in 12AT7 sections? (SimpleSE)
  56. Over-voltage on heaters...
  57. Stray capacitance of CCS
  58. CCS Design for DHT Filaments
  59. coupling cap value help for tubelabSE
  60. YAQIN MC-10L to Klipsch B-3 Speakers
  61. Sonic effects of tubes
  62. Gubin Valve Stereo Amplifier Question
  63. 6J5 Shootout - which one's best?
  64. Chinese Tube Amps?
  65. 26 DHT users please comment on what you built & use.
  66. Guitar amp project report
  67. auricap Vs musicap (Another Cap Question)
  68. Help with splitter design for 7591 PP
  69. Question regarding PS ripple in guitar amps - TubeLab?
  70. Tron Seven
  71. blue glow on one channel
  72. Suitable Power Trans for 6gw8/6bm8/el84
  73. Dynaco Pas 3 Hiss from HV regulator
  74. PS Problem: How do I Reduce Voltage?
  75. Got the build itch again. 80w kt88
  76. lm317 CCS question
  77. LM334z
  78. Parafeeding a Tetrode
  79. Differential stage biasing choice
  80. Got an overshoot problem.
  81. Help! What could possibly be wrong?
  82. Noise - 6J5 - 71a -300B amp
  83. crude, simple and powerful PP-amplifier
  84. What's the appeal of type 80 rectifiers?
  85. Guitar amp layout second thoughts
  86. 6N7 PP amplifier
  87. 300 KW tube audio amplifire-modulator
  88. Weird amp on ebay
  89. which type of rubber cushion under transformers?
  90. 12at7 LTP CCS
  91. Which value of a potentiometer
  92. Strange circuit - heater hum opt feedback?
  93. Aikido question
  94. Tubelab SE diode substitute
  95. Copland CTA-402 Phono Section Comments
  96. modified sine wave power inverter
  97. Rebiasing my DSL-100
  98. My EL84 SE
  99. K-16LS kit Assembled and Working
  100. Claus Byrith 30W PP
  101. Aikido pre and class T amplifier ...for a newby
  102. Best replacement for Black Gate WKZ?
  103. DIY Jukebox!!
  104. Partial feedback confusion
  105. Anyone used the 7C7 loktal pentode?
  106. Is vacuumtubes.net still in business?
  107. Rectifier Tubes
  108. music angel kt88 tube amp schmetic needed
  109. Next project suggestions
  110. Unpotted Peerless 16309 OPT from Heath W5m
  111. 6au6 Cf
  112. Direct-Coupling Question
  113. Help on CCS PP differential driver stage for SE 845 amp
  114. I'm Looking for this Similar Schematic !
  115. ECL86 preamp critique please
  116. Low cost 6AV5 design questions (long)
  117. Got my tube spice models, and tubed CD player page back on the air
  118. Vsac 2008?
  119. How hot do Hammond chokes get?
  120. Transformer current question
  121. TubelabSE - best MOSFET choice?
  122. WTD: Reviewer/Writer For DIY Articles
  123. photomultiplier tube - what is this???
  124. Trace Elliot Tube replacment
  125. fun idea: cameras and tubes!
  126. Quicksilver
  127. EI-75 End Bells
  128. Svetlana vs. Winged C
  129. Tube Amp Links
  130. McMartin MA-20 mods
  131. Power-tube grid-leak bias
  132. Best/favorite CF NOS noval twin triode?
  133. How can I calculate voltage over cathode resistor?
  134. Grid bias with Class A SE ?
  135. QUADII with DHT
  136. My First Tube Amp
  137. RH84 vs Magnavox SE?
  138. Rectifier and amp heaters on one supply?
  139. OPT impedance vs. speaker
  140. Power Supply help
  141. Problem with Stealth clone (12A6)
  142. phono stage hiss
  143. Lafayette LT-100 and 6AQ8 tubes
  144. Input potentiometer selection
  145. VSAC 2008 Amp Class
  146. Searching for simple 12bh7/E80cc pre schematic
  147. filament AC vs DC
  148. Novice PS Question: Diode Dilemma
  149. Custom Power Transformer Supplier UK ?
  150. lowering AC heater voltage help?
  151. 60 hz hum, what causes those?
  152. Problem with my ST70 build
  153. S-5 16LS tube amp use with 8 ohm speakers
  154. Yaqin 300b
  155. I'm going in.....
  156. noisy rectifier tube
  157. Quad II Output transformer rewinding question
  158. screen-drive (g2 driven) plate curves spacing linear!
  159. Strange feedback method
  160. Trio W-45a Amp-
  161. Hammond Power Transformer Buzz...
  162. 6v6 push pull guitar amp schematic sought
  163. Tube DI Help, Please: Substitutions
  164. Harmon Kardon Galaxy BA-150
  165. Velleman K8010 monoblock tube amplifiers
  166. First Project Finished-Tubelab Simple SE
  167. My 6S19P Linestage
  168. EL34 recommendations
  169. Edcor CXPP100-MS-5K- anyone used this (or similar 100W) output transformer?
  170. Bypass 2x0B3 tube cap value ?
  171. EF80 vs EF86
  172. Decware MODEL SE84C-DIY
  173. ST35 voltages WAY too high!
  174. How Do "Heat Fins" Work In a Vacuum?
  175. Acrosound Ultra-Linear OT catalog
  176. Simple Questions: Diodes and Heaters
  177. Recommend an input stage triode please
  178. Copper patinization?
  179. V-m 560a
  180. Anybody dealt with high-endstore.com?
  181. Diodes On Rectifier Question
  182. Stray hum pickup *preamp* cathode R-bias vs. battery bias & 12AU7vs.5687
  183. looking for a website...
  184. Simple 45/2A3 schematic error?
  185. Plate load for push-pull
  186. Hybrid regulator
  187. Hybrid Graetz Bridge
  188. JCM 900 100 Watt Power Trans Specs..
  189. My first amplifier - 6n3c-E
  190. Power supply problem
  191. Grid choke as I/V?
  192. Hammond PR20
  193. 6JN6 screen-drive (g2 driven) plate curves?
  194. Another compactron PP output
  195. 6922 transformer coupled
  196. Beam Deflection Tube Limiter
  197. 6LW6 bias points
  198. Dynaco SCA-35 or Sherwood S5000 iV
  199. SE 6550 class project (continued)
  200. gibson amp lp JR
  201. EL821 / 6CH6 triode curves?
  202. Ground wire adds hum to Harmony H-400A AC/DC amp
  203. "magic" phase splitter for SimpleP-P
  204. Harmon Kardon tube amp kit testing
  205. Did I hurt this capacitor?
  206. (newb) Why no white (-) leads on power trafo
  207. Ruined transformer?
  208. My Tabor Clone is finished.
  209. first build 6em7 and it works
  210. Cleaning up baked enamel/painted finishes
  211. panel meters
  212. Highs roll off
  213. scratch build EAR834p
  214. Silvertone Organ Amp
  215. El156se
  216. One more hybrid idea
  217. Can Anyone figure this?
  218. "Mighty Mite" Single Ended Amplifier
  219. old question - lost answer 6AS7 SE amp
  220. My KT88 SE project
  221. Motorola OPT
  222. Weird Input transformer hum.
  223. cascode vs asymmetrical cathode coupled
  224. music angel 845 SET
  225. Help! My amp stopped singing...
  226. LTP CCS IXYS with 10m45s opinions
  227. Boozhound Choke Tail Pair for HiFi
  228. Bass guitar amp...
  229. 5718 subminiture tube?
  230. fixed bias for push pull tube amps
  231. EC86 and phono
  232. Power Transformer mystery lead....
  233. Bias measurements 6L6
  234. 0A3 Light
  235. Equivalent to Tango NC-10 IT
  236. Ammeter wiring?
  237. Highest Practical Primary Z in OPT?
  238. Ampex 6v6 PP Modifications
  239. Variability of RIAA eq with tube characteristics?
  240. 807/350B/6L6 PP amps PSU ?
  241. Need Help For Tube Amp
  242. ECC83 300B Loftin White amp
  243. Hashimoto and the wonderful 45
  244. Capacitor identification–old PIO?
  245. Heathkit variac
  246. E80L pentode mode as driver?
  247. Transformer repair
  248. How many ga for chassis wire?
  249. 807 Guitar Amplifier
  250. I want to MOD - help?

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