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  1. page tubelab.com
  2. Stromberg Carlson ASR433 Question
  3. CCS better in plate or cathode
  4. Audiophile term: "HIP test"
  5. Advice needed for tweaking S5 Electronics K-12G diy kit
  6. TV Damper Diodes
  7. 813 SE circuit,will it work?
  8. Looking for tube for application
  9. Finger joints vs. screw and glue
  10. 2C36 plate curve
  11. EL34 as preamp
  12. with DHT rectifiers, is the "+" side of the power supply...
  13. Paging Unison845
  14. Quad II - Forty
  15. my amplifiers
  16. Cheap spud amp
  17. Dr. Z "Route 66"
  18. Interesting 6L6GC Test Report
  19. 4D32 SE amplifier... help!
  20. 6AS7G with grid current?
  21. bypass switch for preamp
  22. Grounded Grid vs. Aikido
  23. how to connect an EL34 pentode into a triode and 100ohm resistor between plate and g2
  24. Could this work? (PP amp with CCS)
  25. about newbies...and textbook..
  26. NFB capacitor to screen tap on ST-70 ?
  27. Aikido question
  28. Help with amp #2, 300B or 6550?
  29. Russian 807
  30. Searching Sound Valves M40 Monoblocks schematic
  31. Make: Bell P/A - Model: Carillon '35'
  32. Octal tubes for 7695-style matrix amp?
  33. SET recommendations
  34. Dynaco ST35
  35. Scott LK-72A is ALIVE
  36. 5687 as a single stage SE amp
  37. Changing two stereo amps into two monos
  38. UL Feedback Tap Calculation
  39. Precision Test Equipment tube tester
  40. Octal pentode sub for ef86?
  41. Help with guitar amp sound
  42. to mach1: tubecad regulator using tl431
  43. Thermal management: it this not really of concern?
  44. Signal phase shift through a tube amp
  45. Common-mode EI PS Chokes
  46. Signal pentode in current production
  47. Pentode vs Ultralinear
  48. Bogen CHA33/CHA33Y
  49. Sheet Metal Gauge
  50. Help with 6N6p
  51. Can anyone help, identifing selenium bridge hookup please.
  52. E182CC substitution ?
  53. Face Plate Printing and Silk Screening
  54. Funky reading 12B4A?
  55. Sovtek 5Y3 Issues
  56. from lilliput to gargantua (just for fun)
  57. Formula for calculating HT voltage?
  58. DIY Headamp for Sennheiser-650?
  59. Nuera Tube Amps
  60. Amplifier identification
  61. Perfect tube regulator
  62. Value of grid leak resistor
  63. Comments on this circuit
  64. Just grabbed this AF mesuring equipement, Any infos before restauration is Welcome
  65. Heater current monitoring...
  66. on-off switch position in PSU
  67. A better LDO heater regulator
  68. Guitar Head Amp Schematic
  69. any feedback on Russian gas regulators like SG4S and etc.?
  70. Some cathode follower questions
  71. rectifier voltage drop
  72. Anyone please explain"What is an A1,A2 in SE amp?
  73. Interesting link for guitar amps
  74. What is the correct plate voltage in this circuit?
  75. Any1 have an Osmond PCB library for tubes?
  76. best type cap for preamp PSU
  77. Steve Bench PP loadlines
  78. single Diode power supply?
  79. Spice Error
  80. Anyone have a Welborne Labs amp?
  81. Please help out a Noobie...
  82. wellborne labs
  83. best schematic designer for tubes?
  84. hum in 1 channel
  85. B+ time delay relay
  86. something is wrong with the shunt regulator
  87. Suggestions for a high end tube amp kit
  88. Conrad Johnson PV 7 problem
  89. Math to calc optimal voltage of tube dac to match amp input sensitivity?
  90. Power supply dilemma
  91. Transformer Placement 5E3
  92. Please help: no sound and blown fuse
  93. sparking Output transformer In Webcor 14x240 Amp
  94. Designing my very first tube amp...
  95. Diode bridge for Valve Buffered GC
  96. 6S41S (6C41C) Amplifier
  97. audio research sp11 upgrade help please
  98. The good, the bad, and the ugly OTL amplifiers
  99. Z2b tube rectifier
  100. Sparks inside GZ34
  101. Help with EV4417 6cm5/EL36
  102. Guitar Amps, Overdrive Pedals, and Space Charged Tubes
  103. My Cornet2 Tube Phono Preamp
  104. bright switch to bias circuit?
  105. Regulated AC...thought some of you might be interested
  106. Aikido PSU - integrated or standalone???
  107. Frank Philipse's tube site
  108. World' smallest GM-70 set
  109. Question on output hum on tube amp?
  110. Aikido Preamp
  111. Argh!!
  112. EL84 bias point
  113. Coupling cap rating
  114. Regulated power supply
  115. outstanding book??
  116. when the datasheet says "vertical mounting: up or down", does it mean...
  117. half wave rectifier will not saturate transformer core?
  118. Did I get in over my head too soon?!?
  119. Parallel output tubes
  120. Dropping filament volts/ L-W ramblings
  121. Rogers Cadet III Power problem ?
  122. about bi-cap
  123. HOT Iron ?
  124. how to set current in G Pimm's latest self-biasing CCS circuit?
  125. Low pass active tube crossover
  126. Ecological recycling amplifier (6CU6)
  127. Need ECF80 / 6BL8 tube spice 3f4 model
  128. Capacitor above chassis
  129. PS Help
  130. Bogen-Stein! mx60a mx-60a mo100a mo-100a
  131. Transmitter tubes
  132. Power Supply Construction
  133. what are the advantages of double core output transformers vs EI ?
  134. What is a reasonable amount ripple voltage for a 300B?
  135. "Old Like" sound transformer with a Tube !
  136. I coined the phrase HIGH VIVIDITY, to differentiate our amps from High Fidelity ones
  137. P-P resistance oddity
  138. Tube preamp vs. solid state
  139. 6l6 penthode triode
  140. Rising hum when turntable is plugged into preamp ??
  141. 6SL7 or 6SL7GT for broken Tubalizer
  142. Aikido PCB and AC filaments.
  143. Help with 300b proyect.
  144. 6P14P Amp Scratch Build
  145. 6GH8 - A Little Off?
  146. design and personality
  147. An all DHT push pull amp.
  148. Junk Pile Linestage
  149. need tube rectifier info
  150. Question on voltages
  151. How to change this design from penthode to triode or UL
  152. what glass-ware program?
  153. aikido 12b4 input 6sn7 output???
  154. GZ34 and temperature
  155. schematic search crate bv-60
  156. First Guitar Amp Help
  157. power supply for my single ended amp
  158. transmitter tube amp
  159. resistor and capacitor values for Aikido preamp
  160. need opinion on 2nd hand AF analyzers prices
  161. DH rectifier hookup.
  162. WE 310A vs. Russian 310A in WE91
  163. CRC PSU for preamp
  164. Question on the installation of LL1668 plate choke
  165. max plate voltage rating in tube datasheet
  166. Tube for a shunt voltage regulator
  167. choosing cap values for aikido
  168. Tubes in the Intermediate Stage
  169. c3m + 300b + miller capacitance
  170. How do I bias up a constant current series filament circuit?
  171. The perfect phono preamp.
  172. Got my 6BG6GA's last night
  173. Tubes4HiFi SP-6 preamp
  174. Stupid electrolytic cap question.......
  175. Shuguang 807s?
  176. LX-72A Sanity Check for Noooobie?
  177. Convert EL84 to 6V6? Anyone try this?
  178. PC96
  179. Ultrapath output transformers
  180. Grant RIAA phono with 12AX7/ECC83
  181. Tube VS SS voltage regulators - any advantages?
  182. Ra-a??
  183. Help with my el509 amp almost done but with one problem.
  184. McIntosh chassis help needed
  185. Tube Voltage Regulator Design
  186. DC Tube Amplifiers
  187. Coupling cap voltage rating
  188. Anyone experienced in the 76 tube?
  189. aikido thump
  190. bypassing preamp board in integrated amp
  191. Mallory FP 2x30/500 for Scott LX-72 - NOOB
  192. is it really required to use carbon comp for grid stoppers?
  193. How much trickle current can fixed bias cathode batteries stand?
  194. Who is the administrator?
  195. LM329 as voltage reference in a CCS.
  196. Euridice Preamp with 5842 and LL1660
  197. Trans. alignments
  198. Audio Note M3 Kit modification
  199. Has anyone simulated an "Aikido" amplifier?
  200. Upgrading ST70 PS w/ SS question
  201. 6N1 Chinese tube and others
  202. 12AT7 Linestage design
  203. ECF80 instead of 7199
  204. Modifying a tube tester into a curve tracer (oscilloscope X/Y outputs) ?
  205. 6922 vs 6SN7
  206. Transformer DCR's
  207. ferrite beads v. grid resistor
  208. What went wrong with my amp? Bass driver strange movement.
  209. Toccata Phono Preamp
  210. Drawbacks of Parafeed?
  211. aikido problem
  212. RS253 giant SE monoblock (Chinese)
  213. Plate chokes & Power chokes
  214. 10uF filter cap too small? PSU schematic inside
  215. HOT ROD DELUXE: CRACKLE...POP...what to do?
  216. converting Baldwin organ amp to guitar
  217. best amp for rock n roll
  218. quick question about tube relays
  219. Yeo's Simple EL84 with a twist
  220. ST-70 OPT, A-470 question
  221. meixing 805 tube amp problems
  222. Advice for NOOBie - Dad's Scott LK-72
  223. Peavey Valve King 112
  224. KT66 SE amp, grid current or not?
  225. 269EX in a champ?
  226. How do I achieve more output power?
  227. Driver stage load resistor
  228. More Edcor XSM10K/10K Specs
  229. DC filament
  230. driver stages
  231. Bay Area DIY is Cancelled Because....
  232. Is constant filament current better way to build amps?
  233. Next amp build - Trainwreck - Princeton - Deluxe ???
  234. Quicksilver M135 Output Transformers Color Code?
  235. Dynaco ST70 clone, tubes substitution question
  236. caddocks mk132: has anyone used them for tube projects?
  237. DIY Pro Audio Recording Gear - La2a, Pultec, more.
  238. size of filtering caps SS vs OTL tube
  239. Current rating and tube current draw
  240. NUCLON -- My first hybrid guitar amp
  241. PP splitters again
  242. preamp with output trannies.
  243. Is it the 6SN7 or me?
  244. My Kind of Guitar Tuner
  245. Regulating tube amp power supply - can Iget away with a simpler CLC filtering scheme?
  246. Manufacture date of 6SN7s
  247. simple 12AU7 cathode follower
  248. How's your bench, what's your favorite setup/tool ?
  249. Siemens H42 AM/FM receiver circuit diagram?
  250. 429A load lines

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