PDA

View Full Version : Tubes / Valves


Pages : 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 [33] 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101

  1. Pi wound output transformers
  2. miniatures 6n1p 6n2p
  3. Begginer questions about a guitar pre amp
  4. HK Citation V schematic?
  5. Help! can't find ef86 on my Hickok 539b roll chart! and need a tube project
  6. Physical Oscillating noise from phono stage
  7. PP 6c33c-b
  8. Modifying the classic Williamson
  9. eimac 152TL and 304TL
  10. LTspice model for Dynaco A470 Output Transfomer
  11. audiodesignguide.com PP KT88
  12. One more 4P1L SE
  13. Mount rectifier above torroidal transformer?
  14. Extending Tube Sockets off a PCB
  15. EMG 200 tube tester
  16. Looking for a great starter stereo P-P amp
  17. Question regarding value of Telefunken tubes.
  18. Magic Eye tube
  19. Partridge Transformers
  20. 6CG7 replacing E88CC in SE KT88 Amp.
  21. Omit the filament windings -- LTM8033 from Linear
  22. Best position for bleeder resistor?
  23. anyone have experience with a Radio Craftsmen C400?
  24. Amp-A, a variation to the EL84 Push Pull theme
  25. tony's 6LU8 push-pull power amp build
  26. First Post Here
  27. MFA Lumi sings high-pitched tunes
  28. Power tubes not drawing current
  29. replacing tubes with circuitry
  30. High Voltage Regulators (Maida or zener)
  31. GU-81m tube amp schematics???
  32. Suggestions on SIPP driver stage
  33. How to eliminate the "white noise" for the 300B tube amp?
  34. 6BQ5 UL Curves?
  35. Looking for simple Schematic of 2A3 or 45 or 26 Headphone Amp SE OTL ? anyone ?
  36. 6N1P and 6N6P OTL headphone amp
  37. New Project
  38. Understanding Steve Bench's regulated power supply
  39. Preamp with buffer design
  40. JP200 preamp?
  41. IFI 6SN7 X3 (6N8P-6H8C) Tube Valve Preamp Kit Board from eBay
  42. New Tube Manufacture?
  43. Lowering B+ in PS
  44. Rectifier tube blows
  45. direct coupling
  46. Need some help with these tubes
  47. Edcor GSXE10-8-5K primary Inductance?
  48. SE 2.5k secondary 2w guitar amp
  49. My "Red board" chassis
  50. PP EL34
  51. Building something better with a Chinese SE EL34B Amp DIY Kit
  52. Problem with my amp, and I have run out of ideas
  53. Value of coupling caps
  54. Testing 6BQ5 on Hickok I-177B
  55. Stepped Attenuator for AI Modulus IIA
  56. Tubes are beautifully colored....right?
  57. Differential Input for Aikido Amp?
  58. MY BEST OTL PREAMPLIFIER
  59. Valve testing machine
  60. Line stage with 12AU7 and 6CG7 anyone?
  61. Vibrating capacitor
  62. MingDa MC845-C or Opera COnsonance Reference 9.9
  63. Lower gain 12AX7?
  64. Needed: schematic for Ming Da MC34ab
  65. 12AX7 high gain guitar amp
  66. Solid State Cathodyne Phase Splitter Device?
  67. My Wave Isn't Square.
  68. 6J7 driver in WE91 like amplifier
  69. F2a - C3m Monkey
  70. balanced/unbalanced questions decision time
  71. Stern's saville double 6
  72. GM70 psu transformer.
  73. Antek toroidal vs Edcor?
  74. current production pentode, I_a ~ 8mA
  75. Brook 10c clone
  76. Unknown lamps need help
  77. What's wrong with this?
  78. Microphonics from C0G Caps across Heaters
  79. Yarland FV34CIII vs Synthesis Nimis
  80. 12AT7 and TDA1543...
  81. Eico Hf-81 Integrated Amplifier
  82. Tubed voltage regulator for KT88se amp, need help ?
  83. 1st post what can i build with this?
  84. CJ PV-3 voltage values for schematic
  85. How to analyze square waves?
  86. From KT90 to KT88
  87. side by side bifilar windings in excess of 1000 volts
  88. looking for a great tube amp book.
  89. Revox G36 Mod for preamp
  90. 33 in triode mode...any experience ?
  91. Help with Decware Zen EL84 SET
  92. Bumblebee Caps
  93. Find schematic of amplifier mcintosh mc 275 mkiv
  94. Heater wiring - Coaxial?
  95. now mono blocks!
  96. Heathkit AA-40 or AA-121
  97. UTC o-9 ouncers for headphone amp?
  98. Help modify 6H30 Mu-follower stage
  99. Help me to identify unknown tube
  100. Valve Compressor Circuit
  101. Should I rebuild my Eico 950 Cap Tester?
  102. Choke orientation (Need help)
  103. push pull 813 tube in ultra linear mode
  104. AD1865 DAC + 6SN7 analogue stage
  105. Inexpensive tube amplifier kits?
  106. SET amp/speaker issue.
  107. No pre-Amp - Pre Amp
  108. Found a CHEAP source of output transformers in Europe
  109. How calculate cathode LEDs biased
  110. ESR test for tube amps ?
  111. Anyone familiar with my 1975 Ampeg SVT
  112. asking help/knowledge asked: luxman d105u output stage
  113. Have you ever seen a 4 pin blue Alps pot??? need help
  114. Any ideas on this one???
  115. first 5f1 build is acting funny :/
  116. '57 twin question
  117. Why not 6C41C used in OTL??
  118. 6p14p(EL84) SE with 6n6p build jurnal
  119. Oscilloscope - Which one should I get ? What to look for?
  120. "Jonokuchi" - new desktop amp, or "Little red board"?
  121. Robust Driver stage recommendations
  122. Wireless World valve articles from the past
  123. Overshoot and Ringing
  124. B&K Tube Tester
  125. Harman Kardon A50K
  126. HiFi Tube amp project
  127. Submitted for your (dis) approval, OTL, Autobias Inv. Futterman
  128. Tone control - good diagram needed
  129. Pentron tube microphone mixer/preamp
  130. Dolby AC3 coming on nicely.
  131. Power Supply Question
  132. Dynatuner FM-1 Restoration
  133. faulty audioromy 6550 no output and very faith sound please help
  134. just one tube preamp or driver
  135. Power triode preamp a different way
  136. 49.95 Tube amp?!
  137. Which cap for the Musical Machine?
  138. How much power do I need in the kitchen?
  139. 1Gohm or higher resistor ...
  140. Grounding check for SE 300B amp
  141. Suggest me a build for HD600 headphones
  142. 6BQ5 Screen Voltage Regulator
  143. 6SN7 Tubes
  144. My first tube Amplifier VT4C DIY record
  145. Amplifier output wattage test
  146. Troubble shooting help please.....
  147. Heater Wiring
  148. 220/110 step down in reverse ... and more
  149. Input Level Devil please help
  150. Soft start for a preamp?
  151. Opinion requested: MingDa MC300 variants versus Consonance Cyber range
  152. Using one KT77 and one EL34 per side?
  153. Help identifying transformer wires.
  154. tube pre and tube power amp
  155. Spice Models for Tubes w Screen Grid by Gurski
  156. Theremin project needs some help!
  157. Transformer abuse or other use
  158. aikido heater voltage
  159. HY51Z datasheet, help !!!
  160. 6L6 amp with unique phase splitter - check my math
  161. Dynaco A451 Output Transformer
  162. my 250 watt tube amp can be a 500 watt tube amp for less than 2 bucks plus tubes
  163. 6AU6 preamp problem
  164. Help identifying a Telefunken(?) tube...
  165. UCC85 and e-pay
  166. Lundahl LL1676 - missing data
  167. valve phono pre-amp HELP needed
  168. Preamp pcb
  169. ECL82 pp guitar amp project
  170. Strange Problem In Tube Amp Build
  171. Output transformer question
  172. Replacing ECL86/6GW8 to PCL86(14GW8)???
  173. On or Off?
  174. Neg-Feedback into Grid of gain stage instead of cathode?
  175. Accuphase F-25 Japanese manual translation help!
  176. Negative supply with CT tranny
  177. E130L SE again
  178. tony builds a 7N7 preamp
  179. Tango 10429 78% Nickle Output Transformer?
  180. Bias for Ipod Input
  181. What about this driver????
  182. allen organ amp 75
  183. Needs help Tubezone Poseidon
  184. Lightbulb trick on filament circuit?
  185. AMC CVT3030a Help for repair
  186. TF110-48/UL in the UK?
  187. hum in pas2
  188. Aikido Cathode Follwer Question
  189. 12AX7 tube preamplifier for bass guitar (Need help)
  190. Fuses...what's the deal?
  191. Question Regarding a Partial Feedback 807 SE
  192. Preamp issue on Fender Blues Jr.
  193. Leftover transformers
  194. Newbie "In Search of help"
  195. ELL80/ECLL800 Cathode follower
  196. The "Tube" bookshelf
  197. knight KG-240? low output help
  198. Reverb trouble-Schematic reading help needed
  199. Vacuum tube VCO
  200. JE lab 2a3 , fizzy, squeal in one channel, help
  201. Trouble with a DIY EL34 Tube Amp Kit
  202. SPICE Transformer Model Spreadsheet
  203. Choosing the right triode as a Phase Inverter
  204. toob noob with GE 5670 and I'd like to do something with it. Help?
  205. my first tube amp, no tubes...
  206. Enough heat to power my CD player...
  207. My first tube amp: 6C33C
  208. S5 16LS kit as a first DIY tube build?
  209. lady day we 91 psu mod help
  210. On days like these ...
  211. The Magnetron - A Low Noise, Long Life Amplifier????
  212. 6M11's
  213. DC coupled 300B idea - request for comments
  214. Fisher bias
  215. How does anode voltage swing to twice HT voltage?
  216. Can a 7625 Ceramic Planar Triode be soldered ?
  217. AMI "DD" Project: 6L6
  218. Plate loading questions
  219. EZ81 rectifier
  220. PY500a
  221. Tube Regulator Thoughts?
  222. Fully balanced from cartridge to loudspeaker - a little help needed!
  223. OPT on the speaker side?
  224. tube circuit conversions?
  225. Current inrush limiter suggestions
  226. Repair of Philips EL6416 amplifiers.
  227. GU-19 In priboi
  228. Duncan Amps PSU Designer II
  229. Troubleshoot help for vibrato type problem
  230. using existing pre with this circuit
  231. Laney Tube Fusion 200 series 2 footswitch
  232. Antek AT-070L Specs
  233. Unused tube sections
  234. Rewire Rectifier Sockets for Tube Substitution
  235. Shuguang 300BC
  236. Sn/Pb S-Sn/Cu ...
  237. What and Where is BAF?
  238. CCS plate follower 12bh7 schematic needed pls
  239. 300B DC heaters confusion
  240. Blue Tube Red Plating = Help!
  241. Tube bass preamplifier power supply (Need Help)
  242. Opera Consonance M500 mkii
  243. 6AC7EH Better but different
  244. For that hard to find 5HY 2 amp choke...
  245. Cleaning up an old ST-70 chassis
  246. Accuphase P250 Amplifier Schematic Requred
  247. Pls Help me, this 6C33C pp Schematic is OK?
  248. Loud Noise due to NFB
  249. NAMM Zoo 2011
  250. Recommended O'Scope Reading?

Content Relevant URLs by vBSEO 3.3.2