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  1. center tap of heater winding
  2. Dynaco Mk IV question
  3. Does this tube amp has enough cap
  4. Acrosound TO-330 output transformers
  5. PP transformer for SE use
  6. Holiday Time!
  7. another beginers first amp thread!
  8. Western Electric 374A
  9. Musen to Jikken 03/1997
  10. Please help me make a schematic
  11. Tips for Hakko 936-12
  12. AC or DC for 300b Heaters
  13. Two irons for PSU
  14. Which DHT for Line stage?
  15. Pye Mozart 10 amplifier
  16. I need a simple schematic with 6J1P tubes
  17. First tube project. Need advice.
  18. Sound Valves M-40 assistance
  19. Has anyone been keeping up on the 'New Sensor' Controversy?
  20. quad esl output transformer.
  21. penta labs?
  22. New Build (Guitar Amp)
  23. transformer links
  24. EL84 auto split
  25. TOPWARD MODEL 605 operation manual & Schematic
  26. PREdator, Diff/CF linestage.
  27. Triode Electronics ??
  28. Full Bridge Amp?
  29. Tube literature on pentodes + transformers
  30. so, who made General Motor's "AUTRONIC EYE" tubes?
  31. 6DJ8 Linestage
  32. Annyone seen this problem?
  33. psu to heater on 4 el34 tubes???
  34. 6C33C-B, Reliability--A theory........
  35. Sun Audio preamps
  36. Anyone Use A Harmon/Kardon XT-2 Xformer For MC ?
  37. Carver Phono
  38. Help With 3 Channel Magnavox
  39. simulation software
  40. trickle charge psu?
  41. tube filter
  42. Holiday S-5 K-12G
  43. Couple of (newbie) tube questions...
  44. valve buffer gainclone
  45. Series wiring for heaters
  46. DIY tube cd player ?
  47. Tubes in mp3 players?
  48. Output Impedance?
  49. Hum Pot Question
  50. Which 6AQ5
  51. White flakes in rectifier tube??
  52. Bogen V20 PA Amp Schematic or ?
  53. 12a?7 in Eico HF-12
  54. Home Made Tubes?? has anyone made one, is it possible??
  55. replace 6N1P with 7308
  56. Plate choke on a line stage?
  57. Looking for datasheet
  58. 811A SET Monoblock physical layout suggestions
  59. Automated bias
  60. OTL or parafeed?
  61. tubes: Jcm 900 Slx 50watt
  62. Reversing mains toroids for HT
  63. 5881/6L6WGC and 12AT7WA replacement
  64. Direction for Mounting Transformers
  65. Ecf80
  66. feedback phasing
  67. Cryotubes? Cryogenically Frozen valves
  68. European Triode Festival 2005
  69. PSU capacitors
  70. Question on shared rectifier / signal tube filament windings
  71. Heathkit rebuild or...?
  72. Fisher 500B OPT/Feedback Questions
  73. Transformer selection question
  74. Grounded Grid Help
  75. EF86 penthode
  76. Any audio use for ER21A?
  77. Upgrading a sonic frontiers SFS-80
  78. Hum problem
  79. low frequency oscillation in 12B4 linestage
  80. Balanced volume control question
  81. Need Help for Power Supply for gg Preamp
  82. OTL 6c33c Ciufolli v8.2 low voltage rails
  83. Any way to extend OPT low-frequency response?
  84. RCA Phono Stage Redux
  85. About tube codes
  86. More Joules? Tube or Solid State PSU?
  87. EL34 schematic confusion
  88. 2-stage DHT: high-mu vs. interstage stepup
  89. Understanding this power supply
  90. 6V6G recommended schematic
  91. parallel CRC Filtering for B+
  92. 6v6. 6lg Gain Max Voltage
  93. More buffer questions
  94. Benchtop PS
  95. Chassis labels
  96. LM317 Regulator Problem
  97. Can I afford my SE amp ??
  98. 12B4 versus 6S4 for linestage
  99. Function Generator Probe?
  100. Otl Set?
  101. Tektronix TDS2000 series is a noisy scope
  102. vanderveen's 30W PP amp..
  103. Roberts/Akai M series amp problems
  104. What speaker to use with my tube clone
  105. What’s the best tube amplifier you can build?
  106. Cathode Follower Buffer Input Impedance
  107. EL84 as Preamp and as Crossover
  108. Wondering if Upcoming DIY design will work with Tubes? Cheap DIY Kits?
  109. EL 84 Single Ended Integrated
  110. "2 Stage" PP 7591 Amp
  111. Jolida 1301a with Mission M71 speakers?
  112. EL34 SE in 430V?
  113. EL 84 PPP/PP Class A Triode schematic
  114. Almarro A318A
  115. beckman berkley model 7360
  116. spice model for UL output transformer?
  117. Need help with my new amp
  118. Motor caps
  119. E88CC Mullard fake
  120. Anyone try sharp cutoff pentodes in a p-p output stage?
  121. 845 A2 Monoblock Project
  122. newb needs help on simple el84 amp PS
  123. Newbie's power supply woes
  124. Question about M7 Preamp
  125. Which amp to DIY as a first project?
  126. help for psu
  127. tube amp
  128. Will a 6BH6 work in an Aikido?
  129. Tubes and maximum ratings
  130. FireFly Amp Question
  131. help needed 1st tube diy
  132. Help for newbie building Toccata preamp
  133. Diy Orange guitar amp
  134. Hybrid amp -> tube for VAS stage
  135. I recently inherited a Heathkit HO-10 monitor o-scope...
  136. Laney PA amp help!
  137. Aikido tube choice
  138. Biasing pre-amp problem
  139. Help with identifying tube
  140. Off Topic Holiday Cheer
  141. Prototype preamp example
  142. PV10AL Transformer burned, help!
  143. EL34 Pentode in Push-Pull!
  144. Mcintosh MX110 repair
  145. Mains Transformer Question
  146. Loaded Question
  147. A BIG SCRATCH in my speakers? Help me please.
  148. New Production Tung Sol 6550 Tubes - Opinions
  149. Looking to build a tube integrated
  150. Which high power CCS for output stage?
  151. Using a mosfet to drop B+?
  152. drawings vs. schematics
  153. New TEK Scopes
  154. Transfos Anyone?
  155. Ripple guidelines for power supplies
  156. Mains transformer orientation
  157. New Nightmare (Guitar Amp)
  158. AMD tube integrated tube amp
  159. Using Choke in LCRC filter in power supply
  160. Need good current sink JFET or MOSFET?
  161. Setting Up a Circuit for Testing
  162. 6H6 question
  163. Kennedy Tube Audio Website Hijacked
  164. Yet another 12B4 line stage, or is the 12B4 better than the Grounded Grid.....
  165. transformer for Philips AG9015
  166. Real McTube Help
  167. Where are the 307A / VT225 amps?
  168. Anyone have a single el84 PPP OPT?
  169. Finished First Guitar Amp
  170. Using an old power transformer as a choke?
  171. Convergent Audio Technology SL-1 Scematics
  172. Poinz 6AQ5 Linestage
  173. microphone preamp
  174. Ticking noise, need help.
  175. Humm in my preamp...
  176. Enclosure suggestion/questions
  177. Calculating Tube Parameters +SPICE
  178. Loudspeaker for TUBE DIYer
  179. Tube ID 18R-AL1?
  180. 6l6gc Tube Drive
  181. Need a little help, TT and PC? Amp Kit?
  182. 12ax7 preamp
  183. 308/ecll800 Lorenz
  184. How did you do your Aikido?
  185. Thoughts on this 807 design
  186. Rectifier compatibilty
  187. Tube amp for biamped speaker
  188. 12ae6, 12fk6, 12fm6 diode specs
  189. Any software out there for taking the headache out of composite loadlines?
  190. Driving a single 6L6GC with 12AX7
  191. quick 50c5 to play around with
  192. A question about distortion in SE vs. PP designs:
  193. Need help on first tube amp rebuild -trans problems
  194. HAMMOND 125ESE Transformer WIRING
  195. preamp ps problem
  196. What does everybody really NEED???
  197. Marantz 7C still good today?
  198. Magnavox Chassis #196-55 Resistor Question
  199. 6BL7
  200. altec/peerless mystery amp
  201. 6gk8 triode pentode tube data
  202. Low Current Source
  203. Parallel Single-Ended Questions
  204. Tube power ratings
  205. 6DJ8 or 12xx7 for hybrid amp (Monarchy)
  206. What did I do wrong with LEGACY????
  207. seeking: tube for a SEP parallel feed like an EL84, but with a lower Ra
  208. Tube Tracer
  209. a question of tube behaviour
  210. Which tube? ECC82, 6SN7 or 6SL7
  211. oscillator
  212. The Covi Mark II Circlotron Amp
  213. HT transformers and polarity
  214. Hammond 156C - good Plate choke load??
  215. Music Man sixtyfive reverb head needs help!
  216. DIY pre-amp kit vote
  217. 6550 tubes
  218. Is the 6N6P a direct substitute for the 5687?
  219. SE amp using 1619 instead of 45 triode
  220. Akai M-7 Amp Schematics?
  221. asl 845 monos mods
  222. 3 stages... Two Power Supplies
  223. RCA 7094 tetrodes...
  224. KT88 push pull
  225. Tube amp fan?
  226. Ping gerd.....
  227. Need help finding Sovtel EL84M tubes
  228. Min. current draw for choke input?
  229. Passive RIAA with tubes
  230. Oscillation Mystery
  231. unison research P30K schem?
  232. Can I use a 5R4 GY in place of a 5AR4?
  233. Seeking for all Norman H. Crowhurst papers
  234. best way to elevate heater?
  235. Tube Load Line
  236. Homemade Vacuum Tube
  237. beardm70mk2-want less b+
  238. Need help with tube test data - fast
  239. Show me a schema 6Pi3C-E Push-pull
  240. Help about the 6SN7/5692 linestage
  241. Active load output stage
  242. Power supply question
  243. EL34 Triode Mode - G3 where?
  244. Is "reforming" Electrolytic Capacitors necessary?
  245. Screen grid driver for PL519?
  246. Best replacment for a 6F2
  247. Please Tell Me How To Modify And Upgrade My Music Angle 845 Amplifier?
  248. Pentode to Triode trick.
  249. 6550 making a Popping sound?
  250. Pie-eyed and puzzled...

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