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  1. Silvertone 1448 Output Transformer?
  2. Primary impedance output transformer
  3. isolation transformer
  4. Cloning transformers
  5. EAR509
  6. EL84 for Ipod and guitar
  7. Tubelab web site down, no more SimpleSE
  8. Schematics of potential interest
  9. super capacitor for dc heater
  10. Need a kit ??
  11. Edcor XSM10K/15K like intestage in tube SE ?
  12. Does anyone know of an LTSpice model for 12B4?
  13. where to order V-Cap ?
  14. Input Volume Pot
  15. Red Army Power-amp
  16. Cloning a HF-60
  17. Michaelson & Austin TVA-1 info
  18. analyze a circuit...quiescence current and R-Load
  19. how to calculate SE Coupling Cap Voltage ?
  20. Tubelab Simple SE Rectifier Problem?
  21. Mullard ECC88
  22. Engineering vs tube rolling
  23. Diode Peak working voltage ?
  24. Help wanted; combining topologies to "new" 807 PPP design ?
  25. Tubelab Simple SE with two Transformers - Centertaps?
  26. Hybrid Amp
  27. transformer information need help
  28. Replacing a cathode resistor with a CCS
  29. DC offset and relays
  30. Sourcing JJ 300B tubes
  31. EICO HF-12 Iron - Use in Guitar Amp?
  32. Decware Vs Rogue Audio
  33. Global Feedback on Mikael's KT88SE
  34. Generating big voltage swings without 'iron'
  35. 6AS7G Grid Voltage ??
  36. Next project 6EM7
  37. Anyone built a tube-based (6BE6 or 6HS8) volume control?
  38. What to replace these caps with?
  39. 5691 plate value ratings
  40. Bussiness trip to Singapore
  41. Paco mike tube amp
  42. Emergency help with Wes' amp
  43. 2A3 without cathode bypass cap???
  44. Best way to burn-in my new SE xfrmers on the bench?
  45. tubelabse pt wiring
  46. Need help with my ST70
  47. 6sn7 direct coupled and transformer coupled
  48. Hickok 605A Test 6DJ8
  49. Grounded Grid Preamp
  50. Beginner WLTM fixer of 300B hum...
  51. Bell 2420 tube amplifier. Bias question. 6v6 push pull
  52. How to figure gain on split-load with positive feedback?
  53. Mikaels KT88SE & VTV Octal Linestage
  54. idiot needs help making sense of funny squigles - Filmosound
  55. Custom Transformer?
  56. How are this schematic ?
  57. Need help with a Tube preamp Kit (6Z4, 6N3)
  58. data sheets for 7239 and 8068
  59. John Swenson's New BDT preamp
  60. no coupling caps
  61. 6SN7GT brand
  62. tube voltage regulator error amp
  63. driving 845's
  64. Just ordered a Korg EMX-1
  65. Maida for Screen Supply
  66. cracked el34 -> replacement squeals
  67. SimpleSE goes Push Pull
  68. Possibly defective Mullard 12AT7?
  69. Basic measurement question re: shorts
  70. EL84 DC 10Y Project
  71. TubeCad Journal FET CCS
  72. russian tube
  73. Source for #81 light bulb for Hickok Fuse
  74. pchw 's tube hybrid amp accurian info
  75. 3c24 se amp
  76. schematic of firstsoundaudio pre amp
  77. 300b-98c mesh bias
  78. 6SN7 coin base tubes
  79. tube rectifiers and electrolytic reforming w/ variac
  80. I'm running my leak stereo 20 single ended. WHAT???
  81. Varnish on old transformer
  82. SE parallel output questions
  83. Darius Loftin White explained
  84. best capacitor
  85. New Sensor's "Mullard" EL34 reissue?
  86. Best Way to Control Plate Voltage?
  87. Any Mods for a Noisy Leak Point one Stereo?
  88. tubes for 87db spendor
  89. 4v for rectifier tube
  90. Need help rebuilding old PA amplifier!
  91. inverted?
  92. Old Tube Radio - Restoration Project
  93. quick - need parts retailers Wash DC area
  94. H&K Tubeman Circuit Questions (added schematics!)
  95. Marshalls: Why did 600V B+ become 470V?
  96. Raising filament winding above cathode with a EZ81 in the circuit OK?
  97. Problem with Beard Audio
  98. 100K pot in a preamp?
  99. Motor Run Capacitor
  100. Power transformer for 6883B tube uses?
  101. EAGLE PCB help with socket on it
  102. Rca Mi-38188
  103. C- Battery Supply
  104. Seperating Preamp from Amp in Integrated Amps
  105. Wind my own output transformer for 100w bass amp
  106. Please help me in getting rid of the buzz.
  107. Tube Phono stage dilema
  108. Grounding with single tap secondary...
  109. VTL - Manley stereo 75
  110. What about KT100 in SE ?
  111. Tube amplifier kit needed to drive low efficiency speaker
  112. feeling very pleased with myself
  113. Quicksilver Retube
  114. My Totem Arro 4 ohm load on KT-88 based amp
  115. using flash camera (and maybe laptop screen or fluorescent) inverters to power tubes
  116. for fans of the EL38 - the E3375
  117. 811a Opt
  118. Guitar amp for Wes is running!
  119. Pure class-A or class AB?
  120. 12B4 PP Full Differential Amp Notion
  121. My opinion on Audio Note M10 schematic - Japan version
  122. B&K 650 tubecharts
  123. Help, I need your advice - What Next?
  124. Sloppy, Unreadable, Childlike schematics
  125. Anybody going to tomorrow's NVCF fair in Leamington?
  126. Randall RGT 100 Amp Problem
  127. Pete's SE E-Linear
  128. 0A2 or 0D3 ?
  129. Counterpoint SA7 modification.. shottky diodes.. thoughts?
  130. LTP feedback
  131. Need help with my super six...
  132. EL509 as a CF
  133. SE Diode
  134. 6FD7, 6BM8 or other
  135. My OLD Project....... cheap tube audio project!!!
  136. tube noise
  137. Fisher 400 questions
  138. RL12P35 amplifier
  139. 6AS7 ppp
  140. 6j5 dc coupled to 12b4a as 2a3 driver
  141. '81 Twin problems
  142. The sound of different EL34īs.
  143. Output transformer and FB
  144. Triode curves for 6AU5
  145. 26/el-84 amp possible..?
  146. Vaic 52B monos
  147. Hour Meter for a Tube Amp..
  148. volume pot replacement
  149. Any Ampeg SVT-II (non-pro) schematics???
  150. Ampex 600
  151. Tubing Testing...how are these numbers?
  152. No-R No-C Power Supply
  153. Are my Speakers efficient enough for my Amp?
  154. doesn't sound quite right
  155. 6DJ8 alternates?
  156. Is this the dumbest question?
  157. Fuse between B+ and output transformer?
  158. Telefunken Double Label Error...Ever seen this?
  159. 300B Summer Build Question
  160. 1,25kW tube amplifier/modulator
  161. 12sn7 heater-cathode voltage
  162. Toroidal output transformers with screen drive- why not?
  163. Help With 6v6 Spice Model
  164. Different 5AR4's have different voltages and warm up time.
  165. Edcor OPT in S5 Electronics K-16LS kit?
  166. SRPP Powersupply, replace R with choke ?
  167. First tube amp
  168. Best low-signal direct heated triodes?
  169. 25-position switched attenuator using a pair of 5-position switches?
  170. Help with dead Jadis Defy7 Amp
  171. Bring test points to chassis - Tubelab
  172. Heads up! New unbuilt Dynaco ST-70 kit on ebay
  173. Remote control for integrated tube amp
  174. EL34 pp "fixed" bias is wandering
  175. US sources Russian Surplus
  176. 6550 SE class project (continued)
  177. Convert RCA tuner/pre to high perf AM only
  178. Metal Can 6CA7s
  179. Bypassing B+ in PP amp
  180. Tube shunt regulator for phono amp
  181. Triplett tube tester help
  182. Motor run Caps Question
  183. speaker that can be driven by tube amp
  184. Which perf board?
  185. Looking for schematic/info for a Knight KN 3050 PA Amp
  186. Need help with volume control.
  187. Flame triodes!
  188. make OPT
  189. Tube GU50 made in Russia
  190. Expectations of new tube specs
  191. DC on preamp input
  192. We're up and going!
  193. Putting serial number on tubes
  194. Which of these tubes is best?
  195. Stepped attenuator resistor calculation software
  196. Help with PSU for tube DAC output stage
  197. single-tube (6GN8) amplifier?
  198. Dukane schematic needed
  199. Bloody pinouts!
  200. Testing 5651WA on the bench
  201. phase splitter concerns ?
  202. phono pre RIAA 2001
  203. Quick output transformer wiring question
  204. Can I.....
  205. Cathode FB P.P. Strange behaviour.
  206. Historic Valve Assembly Vids Mullard Content
  207. Unknown output impedance
  208. Any matching in 12AT7 sections? (SimpleSE)
  209. Over-voltage on heaters...
  210. Stray capacitance of CCS
  211. CCS Design for DHT Filaments
  212. coupling cap value help for tubelabSE
  213. YAQIN MC-10L to Klipsch B-3 Speakers
  214. Sonic effects of tubes
  215. Gubin Valve Stereo Amplifier Question
  216. 6J5 Shootout - which one's best?
  217. Chinese Tube Amps?
  218. 26 DHT users please comment on what you built & use.
  219. Guitar amp project report
  220. auricap Vs musicap (Another Cap Question)
  221. Help with splitter design for 7591 PP
  222. Question regarding PS ripple in guitar amps - TubeLab?
  223. Tron Seven
  224. blue glow on one channel
  225. Suitable Power Trans for 6gw8/6bm8/el84
  226. Dynaco Pas 3 Hiss from HV regulator
  227. PS Problem: How do I Reduce Voltage?
  228. Got the build itch again. 80w kt88
  229. lm317 CCS question
  230. LM334z
  231. Parafeeding a Tetrode
  232. Differential stage biasing choice
  233. Got an overshoot problem.
  234. Help! What could possibly be wrong?
  235. Noise - 6J5 - 71a -300B amp
  236. crude, simple and powerful PP-amplifier
  237. What's the appeal of type 80 rectifiers?
  238. Guitar amp layout second thoughts
  239. 6N7 PP amplifier
  240. 300 KW tube audio amplifire-modulator
  241. Weird amp on ebay
  242. which type of rubber cushion under transformers?
  243. 12at7 LTP CCS
  244. Which value of a potentiometer
  245. Strange circuit - heater hum opt feedback?
  246. Aikido question
  247. Tubelab SE diode substitute
  248. Copland CTA-402 Phono Section Comments
  249. modified sine wave power inverter
  250. Rebiasing my DSL-100

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