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View Full Version : Tubes / Valves


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  1. 845 tube question
  2. Broken VCM163
  3. my ongoing amp project since 2004 or so, ver. 13.29.b1.xx.n
  4. Datasheet wanted
  5. SE 833A Help
  6. PS ripple vs output impedance for PP AB1
  7. Simple SE with 807?
  8. Dynaco Bias Balance kit
  9. EL42 Tube
  10. 6GV8 at lowish voltage
  11. 703A tube source?
  12. Music Angel EL34 PP + 6N2 schematics ( MINIL3 )
  13. "Back To Back" transformers
  14. Dual HF small signal pentodes ?
  15. pre amp output delay circuit?
  16. Standby voltages for tube circuits.
  17. SE Output transformers
  18. Advice on connector type for outboard PS
  19. Decent Junk Pile find! Need Advice suggestions etc.!
  20. Red Plate,Tube runaway, glowing screen grids
  21. Dogfish
  22. Anyone ever bought this Ebay Head amp?
  23. Rogers Cadet III (Mk3) - which input to use?
  24. Recycling a TT plinth as a tube amp chassis?
  25. motor run caps
  26. RH-84 Hum
  27. Regulator LD1085V Question
  28. Chasing Hum...
  29. What do you know about the 23D4?
  30. Vacuum State RTP3C
  31. Another Tubelad SE build
  32. Noisy DC filament power supply problem on an Aikido
  33. Aikido Phono Stage with Step-up Transformers
  34. 6-volt rectifier tube
  35. Replacing output transformer questions
  36. Hey SY, were you aware of this?
  37. Where is the best place to sell a pair of OTs?
  38. EL84 tube regulator
  39. Testing 6H2P on 600a
  40. Grid stoppers, clamping, blocking and crossover distortion.
  41. Fender 125A20B output transformers?
  42. Genrad 1630AV
  43. Gary Pimms "self bias ccs" - guide for dummies
  44. Using a PC as source? + "garage sale"
  45. loktal version of 6bl7
  46. RCA SE 6bq5 amp gain problems
  47. 12V AC to 6.3v DC simple supply for idiots
  48. PPAB with plate feedback, current-mirror driver
  49. LM317 oscillating in cathode circuit
  50. Tubelab SE amp question
  51. Help with RIAA stage schematics
  52. 829B/3E29 "Triode" Push Pull Paralleled Sections
  53. Phantom Bidders on eBay
  54. Complicated psuedo-scope question
  55. Help me choose between two designs
  56. Miller Capacitance AGAIN!
  57. Channel switching / Relay / board
  58. Tossie's valve world site
  59. What is the purpose of resistive load at line output trans?
  60. 8608 pentode
  61. #26 pre amp
  62. my third RH84
  63. Miller Capacitance of triode strapped pentode
  64. 50 set amp
  65. Valuable Valves
  66. Allowable screen voltages in triode-connected pentodes
  67. grounding cable
  68. SS Driver and splitter stages used for PP tube output???
  69. Resistance coupled cascaded amplifier
  70. 6SL7 alternatives?
  71. Dynaco st70 vs Heathkit W5M
  72. Ceasar II - HighEnd Tube Mono Block Project
  73. Cool amp
  74. output tube blocking distortion problem
  75. HP 8903 software posted
  76. Rectifier for 900v DC
  77. How good are these?
  78. Brimar 6V6G different operating parameters to later GT?
  79. RCA RK290 console question
  80. pls help me, Buil my first AMP with 6H5C (=6AS7) tube.
  81. Simple 6V6 Push Pull Schematic
  82. remote help for RCA RK-290 console
  83. Suggestion for a 2x15 or 2x20 amp?
  84. Spud, Schade, PP, Anti-triode ECL86
  85. Posted new P-P power amp design
  86. Steve Bench LR Phono Amp. with (Sowter or Dave irons)
  87. Vintage RCA amps
  88. 6.3V/5A DC Fillament Schematic
  89. Can I use this output transformers with a 5965?
  90. Measuring Tube Gm
  91. Can I use this output transformers with a 5695?
  92. How to design a direct coupled SE amplifier?
  93. Ordered TechTube Valves today
  94. Should I buy and part out an old Hammond tube organ?
  95. 6N6P Unbalanced Sound?
  96. DC filaments for 6550s
  97. Obliterate, delete Vibrato or Reverb circuit in blackface-like amps
  98. My Copland CTA401 hums , help needed please
  99. Triode connected Pentodes in a cathode bias?
  100. Transformer as a voltage gain element
  101. Russian 6p31s tubes
  102. Ixcp 10m45s
  103. rectifier limiting resistors capacitor input
  104. arc V70 blue flash in KT90 tubes
  105. Choke?
  106. EL34 PP motorboating questions
  107. GU29 damaged
  108. PSUD2 questions
  109. Help lundahl-300bxls problem
  110. Srrp output question
  111. je lab 300b
  112. SET amp using Triode-FET complementary feedback pair ?
  113. Monarch STA-100X Refurb
  114. What causes high THD in tube amps ?
  115. Cons / Pros
  116. Preamp 6v6 grid leak resistor value?
  117. Quick question about preamps
  118. Why are mesh plates supposed to be superior?
  119. 60's and 70's GE tubes
  120. What valves are pin compatible with ECC88 / 6DJ8?
  121. Eico HF-81 OPT specs
  122. Fender Super Twin P Xformer
  123. Audio Research V70 mains transformer rewiring for 220 volts.
  124. looking for fairly simple project for Eico 81 OPT's
  125. looking for fairly simple project for Eico 81 OPT's
  126. New Hybrid Driver/Amplifier
  127. OT: vacuum diode AM detector schematics ?
  128. Sad News about George Wright
  129. Finest Chinese Tube Preamp?
  130. 12B4 Line Stage + Phono Option
  131. Crinkly tube getter – Is this bad?
  132. ??? Output Transformer - Silicon Steel or Amorphous
  133. Is it time for another CCS Group Buy?
  134. Am I Going to Kill This Amp?
  135. My version of the Simple EL84 or rise of the anti-triode.
  136. Intercomponent ground loop hum
  137. Connecting the heater to the cathode in rectifier tube
  138. Dented ASC Caps
  139. EF86 replacement
  140. Super Simple Valve Pre-amp Suggestions?
  141. 6V6 P-P Amp From RCA Manual RC-19
  142. phono stage woes...
  143. stereo SE kt88 build ... abdellah diyaudioprojects design
  144. Mounting filament transformers under chassis?
  145. More impedances for Hammond 125E
  146. Troubleshooting Push-Pull 2A3 (please help)
  147. Lost a channel in my TSE
  148. 6sl7 srpp kt66 se
  149. asking about 6sn7 and 2a3 tubes
  150. help w/ Eico hf-81
  151. Hammond PT power ratings
  152. JVC/Delmonico console info
  153. my TubeLab Amps
  154. Issues with grid choke
  155. Sharp reg. for tubelab se
  156. Calibration of Mercury 1000 tube test set
  157. 6v6 music machine build help!
  158. PCF801 Suggestions
  159. el84 200V Vg2 curves
  160. Prototype fender bassman for trade - echosonic or standel 25l15
  161. What's the advantage of E-linear
  162. Tube microphonics (article)
  163. Another Counterpoint SA-7.1 question
  164. How to test a subminiature tube
  165. C3M linestage
  166. Needinfo: Tamradio SOT-850 specs
  167. Back to Back transformers
  168. UltraLinear Screen Drive
  169. UTC CG-52AX - use as plate chokes?
  170. Chassis material
  171. Fu29 & e813cc
  172. Converting Bogen chb-35a to more guitar friendly amp (newbie inside)
  173. Tube rollers - what tubes for my RH84?
  174. What is meant when tubes are sold as "matched"?
  175. 1:1 transformer replace with line filter
  176. Old valve radios have any use?
  177. Know of any big 7 pin FW rectifier tubes?
  178. Decca Decola PX25 amp schematic
  179. Happy birthday....to me!
  180. Just tested the new E183CC
  181. Chassis mounting tubes off my PCB
  182. Tubelab SE with 2A3 Hum
  183. I need some help with the OPTs on a set of old 6V6GT monoblocks
  184. modified Headwise WCF headpone design
  185. 6em7 ,difference from brand ?
  186. Wavebourn Tower thread
  187. Sealed Lead Acid Batteries
  188. New ebay record!
  189. New ebay record!
  190. NFB, how to implement here?
  191. Recommended Mouser Electronics
  192. Utter novice looking for answers to easy questions:
  193. Hum Troubleshooting on My Tubelab SE with 2A3
  194. Trying to understand Power Supplies - The first Cap in a CRCRC
  195. 5687=e182cc???
  196. Series wire Antek Secondaries
  197. 300bxls vs mosfet :)
  198. 6N4P info
  199. Its alive!!! Aikido 5687
  200. Looking for advice,EL84 based Mono amp conversion/ restoration
  201. Looking for ideas
  202. Looking for curves for obscure tube
  203. tube life, soft start, cathode bias
  204. Triad N-68X Tranny for ^SN7 Aikido?
  205. RH84 with simple 5687 front end?
  206. Rickenbacker old amplifiers (b16 series)
  207. Aikido grounding scheme
  208. measuring voltages and currents simple se
  209. Beginner's luck -- Tubelab Simple SE on first try!
  210. 6CH6 find
  211. Shielded cables - success
  212. Heater-Cathode Voltage
  213. Battery powered tube preamps/effects (guitar)
  214. deliberately unmatching output tubes
  215. triode heater ground question
  216. 6sn7 alternative
  217. A tube amp that will drive 2 ohms or less...
  218. Looking for a simple circuit
  219. Why does my tube amp make a scratchy, popping sound?
  220. Fisher kx-100 Recitfire problem
  221. Potentiometers - USA
  222. Tube SE amplifier with 6P3S (russian tube)
  223. Plate dissipation
  224. Need help with tube models in LTSpice
  225. D3a pentode as driver? History of this tube?
  226. Tubelab SSE inrush current limiters.
  227. looking for some ideas. rebuilding heathkit w-3m amps.
  228. What's wrong with the 12AV7? Try this out!
  229. simple se and edcor gxse output transf question
  230. old tubes
  231. weird ef86 input stage in a Philips amp
  232. table radio w/ tube amp...in the designing process...anyone do this?
  233. Question: grid current related
  234. RH84 based amp
  235. My Aikido!!
  236. Tubelab Simple SE - Transformer Assistance
  237. ST70 clones
  238. Need help selecting a VR tube
  239. Help analysing Hammond organ circuit
  240. Stromberg-Carlson ASR-433
  241. WAHAHA! Our DIY tube amp is done£¡£¡
  242. Pentodes.
  243. making octal adapters
  244. How to cut ceramic
  245. Tubelab web site down for a day
  246. Trans wires in parallel or series?
  247. Tube socket for ECC88, drawing
  248. Richardson 5ar4
  249. Percy Audio / Still open? / Can't seem to get any response from them
  250. Resistor types in an amplifier

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