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  1. Old radio quick question re PS
  2. Kt90 Pse
  3. Velleman K4040 is Always Blowing Output Tubes
  4. looking for transformer with the following specs?
  5. 5686 amplifier schematic
  6. Heaters for cathodes with a large swing
  7. 6DJ8 as phase splitter.
  8. New driver for SE 2A3
  9. Ive made a Mu stage with 6888 and 6C45...
  10. Quick urgent Help plz !
  11. Cheap SET Kit for UK
  12. How can I change bias 6H30pi tube
  13. DHT heater voltage
  14. Ok SY...You Win
  15. Input level required- PP KT88
  16. SE 6C33C-B ; preview of a new Baby
  17. 2A3 grid DC voltage
  18. Dyna ST70 experience bypassing input tubes
  19. [Theory] Amplifier efficiency
  20. Pentode Cascode CCS
  21. Noval Relay
  22. Where to buy 6A5G ?
  23. AC or grounded DC for heater?
  24. EM84 based VUmeter "lines" don't go to zero
  25. 'scoping tube amps
  26. Preferred operating points of small signal triodes
  27. Is the Nuvistor Better Than The 12B4 For A Line Stage
  28. audio research schematics
  29. Looking to put the entire (last edition) RCA and Sylvania books online
  30. 5693 as a phono preamp?
  31. Audible Illusions Dual Mono Preamplifier
  32. should the filaments be already hot before the B+ is applied or
  33. One Electron vs. Transcendar
  34. "Y" caps? current bleed?
  35. I made a 200W tube amp!
  36. Power amp kit for a complete newbie
  37. Confused, datasheet of 417A/5842
  38. Audio Amp Project
  39. Tube tester settings?
  40. Neutrik XLR for Umbilical
  41. Primary Impedance
  42. Need help for HV section Design
  43. power amp kit recommendations
  44. 6N6P vs 5687
  45. Triode spice models for Circuit maker
  46. My ARC D70 get trouble
  47. when using PSUD2, do you...
  48. Depression... and a plea for help!!!
  49. Weston 981 Type 3 schematic and parts list needed
  50. 3W 6C33B-C SE OTL schematics ready
  51. Batory tubes, anyone familiar with these?
  52. Musical Pre-amp topology needed. Interstages please apply!
  53. Tube power Amp matching with SAE Mark M pre amp and AR18 speaker or MS 25i
  54. PowerDrive Circuit for 805 (+ve grid bias)
  55. Alternate spice models
  56. Is this heater supply OK?
  57. Basic RC Value Question
  58. Hookup powersubwoofer to a tube receiver.
  59. Transformer question RE; connections on phono stage
  60. Rectifier Tubes Data - Quick Sheet
  61. Now This is A Tube Guitar Amp!!
  62. Which cabling to use?
  63. Need 396A/6N3P/2C51/407A spice model
  64. Antek Toroidal Power Transformers
  65. HT stands for???
  66. Is it possible to hook up 6c33 plate in parallel
  67. Help eliminating hum
  68. Tube LTP CCS?
  69. Trancsendar Transformers
  70. Hafler/Keroes 6L6 UL
  71. hum
  72. Leads for ISCO PS?
  73. Negative Feedback Bogen CHB100
  74. TubeCad's Hybrid amp question
  75. Cathode bias resistor value for 6SN7?
  76. El84 2-Channel Mono Blocks
  77. Tube Design Books
  78. Interesting Williamson article..
  79. Locating Preamp Output Transformers
  80. Plate characteristics
  81. How do you finance A Great DIY Audio Amp?
  82. 808 Se
  83. Parafeed doubt
  84. A little research: old tube amps from the past
  85. RCA Victor stereo cabinet amp-newb question
  86. Transformer temperature?
  87. switch in SPICE
  88. Using a standard pentode-tetrode as output "space-charge tube" any ideas-experiences?
  89. Tube testers which is the best?
  90. finished !!!
  91. Transformer Leg Connection Question
  92. simple ccs under 5-10mA ?
  93. Curcio Sarah Phono stage: opinions?
  94. suggest a KT88 SE to build
  95. Transformer potting material??
  96. Jan E Veiset Mini EL84 pp
  97. Some questions on non common things
  98. basic question on plate curves
  99. Euro barrier strip palace
  100. ARC D90 needs new electrolytics
  101. 5763 Triode Strapped
  102. Recommend me some transformers for a PP EL84
  103. grid LED bias?
  104. Help on tube socket
  105. Taking CFB to the extremes...?
  106. Output section impedance change query
  107. Tube Suggestions
  108. 82 Popped
  109. OPT Project for EL84 SE
  110. Interesting eBay "listing" for tube amp
  111. How to chose the right choke
  112. Eco warrior thinking of jumping ship !!!
  113. HELP! Cathode bypass caps keep going...
  114. Best Operating point for a 2A3?
  115. Need help with preamp
  116. Best place to buy valves and components?
  117. Replacing cathode resistors of Aikido 1st stage (or other SRPP circuit) with chokes
  118. Circuit calculations
  119. Finally going to give my TVC/active preamp a real home...
  120. Suggestion on the input transformer for tube preamp
  121. sylvania & GE tubes
  122. SE Amplifier
  123. "fisss" on the 6C33C-pp
  124. Best price for tube output and power transformers ?
  125. What kind of output transformer?
  126. transformer
  127. 20W PP Choke PSU Question
  128. Regulated B+ supplies (using tubes)
  129. Confused by the numbers
  130. Feedback on Thorsten's legacy "universal dht" amp
  131. Are there techniques for triode-strapping on the fly?
  132. PROJECT begins: bass preamp
  133. The best bias point for KT88
  134. All tube CCS
  135. GU50 SE Amplifier class A , with 6SN7 Full construction details
  136. 50L6GT & 6L6GT sounds ??
  137. Especially for Tubelab: 845 amp 2.0
  138. Mini guitar amp from a Webcor tape amp, is it possible?
  139. Powerdrive
  140. Filament voltage and affect on Rp
  141. Tube pre-amplifier PSU
  142. Help with a cathode coupled pentode driver?
  143. Amp that has the biggest number of irons
  144. 12AX7A replacement
  145. Bogen CHB-10A Conversion, need help and advice
  146. Who said it was a good idea to try pentode!
  147. Input level
  148. 6V6GT
  149. 6AR6
  150. Any TCJ Push-Pull Calculator users?
  151. 211 Push pull operation points
  152. Edcor CXSE25-8-4K vs Hammond 1628SEA?
  153. Bass guitar preamp
  154. 50W KT88 PP w/ NFB on Bonavolta
  155. Looking for nuvistor pre-amp preamp schematic please. 6CW4?
  156. BELL 3030 Amplifier
  157. Diy Paradise!
  158. Another PP 6B4G
  159. How to get a buffer with overdrive from a 12AX7 ?
  160. Pulsating Glow
  161. Question on using glow tubes (v-regs)
  162. Eliminating the OPT: impedance matching
  163. KT88 and push-pull ultra-linear
  164. Positronic Tubes
  165. Paint steel chassis with the "aluminum paint" used on wire fence?
  166. Best bias for 6cg7
  167. Coupling caps test bed
  168. 829B Based Amp
  169. slight hum still haunting me
  170. CCS bias question
  171. Can't get solder to stick
  172. EL84 amp plus subwoofers? STUPID? OR NOT?
  173. Johan Potgieter
  174. parallel sections
  175. PL504/EL84 SE vs parafeed
  176. [help] Look for McIntosh MI-200 Circuit diagram
  177. My experience: the cheap punch set VS Greenlee punch
  178. 6V6GT SE schematic -need!!!
  179. What's the deal with Broskie's iPod buddy?
  180. a quiz about AC power
  181. Beard P100 Amplifier
  182. Quick identification question
  183. 6V6 guitar amp design attempt
  184. Some more RIAA questions
  185. what to do?
  186. A suspect EL34
  187. Best way of reducing heater voltage?
  188. Musical Instrument tube amp part suppliers
  189. tubelab
  190. My first power amp
  191. El34 SE pentode
  192. All Electron Tubes Manufacturers
  193. Mu stage driver
  194. two questions on Parafeed amplifier
  195. 6AU5GT
  196. Connection advice
  197. 'Tube'-ing a reel-to-reel player.
  198. EL34 make up by PCB
  199. wanted RIAA schematic
  200. What is the best software to create tube schematic
  201. Soft clipping acceptable?
  202. help for this amp
  203. Pentode PP amp for comments, please
  204. 966A rectifier
  205. 938 power triode
  206. PL36 PP Amplifier 22W Full construction details
  207. Quick question about the output of my amp
  208. Sansui Transformers from Tokyo Electronic Industrial Co. LTD.
  209. An "All American" tube Project
  210. Aikido and output transformer
  211. Why are Hammond SE OPTs dissed? Heavier than the competition...
  212. Driver stage headroom
  213. Help me before I deal hot electric death to myself (PS question)
  214. AVO CT-160
  215. Two cathode resistor bypass questions
  216. Home-Made Tube Guitar Heads
  217. What do you guys think?
  218. Antique Sound Lab Aq1003
  219. Audiomaster integrated (Valve) amp
  220. PP Amp using 811A
  221. Replacing ECC83 in Leak Stereo50 with ECC808
  222. 6N30/6H30 Datasheet
  223. Equivalents to 6888
  224. Input voltage
  225. Converting from integrated to pure amp
  226. Final schematic, I think?
  227. Toroidal core saturation
  228. Mystery SE OPT
  229. Is this a Spud Amp ?
  230. input cap V rating
  231. 6922 Heater - BIAS
  232. JJ 2A3-40 Watt?
  233. 12AU7 testing result: Are these tubes still good?
  234. "OTK" stamp on russian devices
  235. Where did nj7p.org go ?
  236. New to forum! Or: A few newbie questions
  237. Powersuply Le Bong?
  238. Fixed Bias: the ups and downs
  239. Bias Adjustment Question
  240. Multiple secondaries hook-up!!!
  241. Plate voltage related to sound?
  242. Array speakers & OTL
  243. First Post - Hum on 5687 Pre-amp
  244. DC powered amps
  245. Evaluating Unknown Power Transformers
  246. 0v grid bias with UL connection?
  247. LV Filament supply quandry
  248. which tube using NonDirect heat with best-class sound ?
  249. Surround Decoder - Subtract amplifier
  250. New To Forum - First Post

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