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 99 100 101 102

  1. Best kit for a rookie tube builder
  2. schematic question? 805 feedback
  3. 6av5ga distortion spectrum
  4. Single stage line with anode-cathode feedback
  5. VNAV' SUMO Contest 2011
  6. Direct heated triode (dht) cathode bypass: different options
  7. choice of driver for RS 241
  8. Wiring up 3 6.3 Volt Heaters to a 12V supply
  9. Adding LED's to my tubes4hifi sp6 preamp
  10. Stripped down HK A-300
  11. Westrex 2332A amplifiers
  12. Leak st20
  13. Where could I find these sockets???
  14. Hammond L-112
  15. 4-pin tube socket spring clips
  16. Quad FM1 tuner, could be in wrong section
  17. My first tube amp and speaker build I'm loven it
  18. 211 IT amp, battery vs fixed bias
  19. 300B Tube Failure
  20. how to see if a Mullard 12ax7 reissue is long or short plate
  21. Can capacitors, how do they fail?
  22. Long Preamp to Power Amp Cable Lengths
  23. My time at Hovland - HP-100 Lore
  24. hybrid quad design
  25. TooB NooB: Options?
  26. Preamp grounding
  27. Express PCB and POV-ray
  28. Looking for circuit of SE amp. for 4D32
  29. 865 tetrode in triode mode...WOW !
  30. MP-2A preamp
  31. Is a 7 watt per channel amp enough
  32. Help: Interstage Transformer for 7788 (E810F) Tube in Triode ?
  33. Transformers
  34. Pentode curves for GU 50 SE amp with 700V B+
  35. Valve op-amp pre ?
  36. Use only half of OPT secondary?
  37. On/Off cycling
  38. Tube operating points help
  39. OTL Heater Questions
  40. tube output question
  41. RIAA LCR Mythos
  42. first tube amp
  43. M135 retubing and eventual modification
  44. Taylor 211 vs. GE 211
  45. regulated
  46. What should I do with these eico hf-12's?
  47. Dynaco mk3 clone hum issue
  48. First DIY project, which SE tube amp should I build?
  49. 6n11 tube headphone amp
  50. Kt88 Pin alignement problem=did a mistake
  51. LTspice Frustration...help, please..
  52. Bias mods
  53. Maida tracking preregulator?
  54. 230 VAC to 2*140 VAC transformer - 20VA
  55. Re gettering?
  56. Distortion rise on OPT
  57. How to build a transconductance tester for small driver tubes?
  58. Musical Fidelity X-10D Cap Mod
  59. 6N3 & 6E2 tubes.
  60. help with local nfb
  61. What should I build
  62. leak st20
  63. Wright Audio WPA 3.5 Humpot & schematics
  64. the old light bulb trick
  65. Dynaco ST70 KIT - your opinion please
  66. Wire for tubes using a plate cap?
  67. Lundahl LL1660 OPT Franks 6SN7 linestage
  68. GU-50 PP + 10k:16-8-4 Ohm ,20w OPT..what is the best to do?
  69. Tomiko 10k PP transformer?
  70. Powerdrive for higher grid wattage A2 transmitter tubes
  71. Marantz Model 5 Amps and Model Seven Preamp
  72. How to calculate output transformers
  73. Grounding considerations with external PS
  74. Cathodyne fet buffered balanced line out
  75. 807pp + input phase splitter
  76. leak st 20
  77. Questions about Champ mods, NF loop and more
  78. Does anyone know what this is!..???
  79. Thought Exercise: Submini Circlotron OTL Amp
  80. Preamp Grounding PCB
  81. Manley 440: Tubes red cherry after replacing old tubes with new ones
  82. EL95 Parallel Push Pull design
  83. What is the ideal low-noise heater power for high-power output tubes?
  84. Beijing 6N6T
  85. Tube recomedations for my first tube amp
  86. Tube Load Lines and B+
  87. Hybrid rectifier possible in PSUD?
  88. Hickok calibration
  89. Bias voltage slower to come up
  90. Can You Reccommend a 6922 tube?
  91. Miniblok Resistor Parameter Modulation using Pots
  92. gm70 driver tube tests
  93. 300B Globe physical dimensions
  94. DIY Fisher 800b into a mic pre
  95. OPT Modification Question-Help please?
  96. Cant find origin
  97. Fixing Sneaky Oscillation in P-P Amplifiers
  98. fu-29 Audioromy
  99. Almarro A205A as experimentation platform
  100. Thoughts on layout and potential for improvements
  101. What is the difference between "rectifier tubes" and "power tubes"
  102. uTracer...
  103. EL84/UL84 single valve amp
  104. Mic preamp - strange high frequency roll off problem
  105. Tissbury audio
  106. midification to srpp preamplifier input voltage
  107. DHT SE amp with ultrapath
  108. Tube mic preamp problem
  109. Output transformer: reasons for destruction?
  110. Bewitch KT88
  111. SE OPT Wiring
  112. maggie 185 to stereo guitar amp?
  113. Budget 300b tubes recommendations
  114. Hum problem through one channel
  115. Audio Research LS22 DIY
  116. 300V Tube Power Supply From 120VAC Without Rectifier?
  117. NOS Tube: Black Spot on Getter Flashing? Help
  118. FET Source Follower Distortion
  119. TUBE/MOSFET/BJT hibrid amp
  120. PYE Black Box amplifier
  121. Tube tester
  122. what OPT for 211 parallel SE amp?
  123. Opinions for 6550 bias.
  124. 832A as a Single Ended Tetrode Amp?
  125. DCPP - "Engineer's Amplifier" : Need a bit of help
  126. quicky rebuild 6v6 to 807
  127. Old fire bottles.
  128. Regulated Power Supply using 6550
  129. GU50 SE vs 300B SE tube amp??
  130. Help with voltages
  131. New to valves & this forum.
  132. new amp 2a3 pp
  133. Telefunken EL153 SE circuity
  134. RH 84 Variation: Direct Coupled Pentode
  135. Single Transformer, two valve rectifiers
  136. Capacitors for Radio Frequency Amlifier and Converter Oscillator Tubes
  137. Tube Screening Cans
  138. PSU grounding
  139. 6AX4GT TV damper
  140. plate on chinese 6L6 red on one side
  141. FM stereo decoder
  142. Under the Christmas Tree - Valve Amplifiers 4th Ed.
  143. Using those dern 1625 tubes: a simple SEP amplifier
  144. Pairs of resistors in opposite directions
  145. 45 spice model
  146. APEX 460 Tube mic modification
  147. EL84 and 6BQ5 are Same?
  148. Simple hybrid amplifier (35W/8Ohm)
  149. Yaqin mc 10l or qinpu 6000 mkii
  150. Reported attack site?
  151. LCR RIAA Phono with DHTs
  152. New Here -Would Like to Build
  153. 12E1 push pull poweramp
  154. marantz model 9
  155. I would appreciate some helpfull advice from Aikido builders
  156. Dynaco ST70 big Snorting noise.
  157. Good Soft Distortion
  158. magnavox 8301 revamp, need's a second look
  159. Circuit or schematic for current source of 7.5mA
  160. Sakuma's bleeder tubes and series connected transfomers
  161. Tube measurement
  162. adding tone control to SE 6v6 amp
  163. Easy Little 6L6 SE
  164. knight KA-55
  165. Hum in tube amp
  166. Lundahl LL1660 10 mA Alt V
  167. 12au7 valve preamp (again?)
  168. Simple DC heating question
  169. 6146B?
  170. Reduce gain on power amp?
  171. ES9023 DAC(subbu) + Tube Preamp with Remote and R2R volume control(Danzup)
  172. AC heaters question
  173. Anyone tried this Mcintosh c22 knock off.
  174. Help me to find pins for tube socket
  175. HT delay pcb...
  176. Power supply, heater questions...
  177. Heathkit AA-151, to separate pre-amp advise needed?
  178. grounding
  179. 2 Stage GM-70 amp in A2... possible?
  180. GlassWare Janus Shunt Rectifier Tube Swap
  181. Schematics
  182. SE 6B4G driver tube options?
  183. seeking datasheet of 6J2B-V in english
  184. Nailing Hum in my Phono Stage
  185. Shaving voltage off HV supply?
  186. LEAK T12 and POINT ONE - worth having ?
  187. Quicksilvers Mid Mono Schematic?
  188. Russian & East European Tube Factory Logos
  189. Lampizator Channel
  190. RIAA triode or pentode
  191. Cute Little Tube Oscilloscope, Thought I'd share.
  192. Is it really possible to deliver 2W into 40 ohms with an SET ?
  193. se
  194. Connecting Two Amps to Common Input
  195. Wiring Aikido using LSA/HPA switch
  196. Most exotic SET power amplifier
  197. Help with rogers cadet 3 integrated
  198. Opamps for servos in tube amps - Christmas gift from LT, 12-12-12!
  199. tube amp hum........normal or suggested fix?
  200. Building a beast: Stereo EL84 auto bias PP tube amp
  201. Becker Brescia auto radio
  202. Double feedback pentode Power Stage
  203. Anyone Using Guiguang 300b tubes?
  204. Where to get Audio Note Gaku-On service manual?
  205. Sanity Check - Input Transformer Overshoot
  206. TOA HA-355 vintage tube PA amp schematic
  207. EL34 PushPull UL Amp
  208. 6L6G emission too high
  209. Need help designing BIAS circuit for old Bell amp
  210. Heathkit A-5A 6L6 PP Integrated Amp
  211. Where to put the meter
  212. Radii GS-40pp
  213. Concept dilemma (pre/pwr/spud content)
  214. What to do with these Eimac tubes?
  215. Driving 211 with VT25 or EL34?
  216. DIY AMP start project - Help choosing one
  217. Pilot 248B Amp with weak channel
  218. 6H30 VA stage?
  219. What is the best way to connect DC filaments?
  220. suggestions for a parallel feed 45 amp?
  221. Counterpoint SA 5.1 repairs
  222. The Morgan Jones mini tube headphone Amplifier
  223. Borbely headphone amp
  224. Found An Amplifier In My Basement I'd Forgotten About & Learn It's Sought After
  225. Floating OPT oscilloscope measuraments
  226. I Wasn't Away That Long, What's WIth The Price Hikes On All My Old Toys?
  227. Channel voltage mismatch
  228. OS70/1750 datasheets
  229. Beautiful Chassis
  230. 6A4, 46 and 47...excellent sound tubes !!!!
  231. Is it Overkill to use Duelund Caps in Power Stage (Counterpoint SA-5.1)
  232. Quicksilver M135 Schematic?
  233. recognize this old amp?
  234. grey fogging inside 6sn7
  235. Point to point or pcb?
  236. Quad query
  237. Fixing a Velleman K4040 - Buzz HIss Crackle Blown Tubes
  238. Found Original Genalex 12AX7..Need Advice..
  239. OPT power rating and amplifier power
  240. 6BG6-GA
  241. EL84 driving EL84 SET with fixed bias
  242. P2P 6CG7 Input Buffer
  243. 865 in triode mode...anyone ever tried it?
  244. PP KT88 Amp Low frequency Ringing
  245. World audio designs kel34
  246. Glassware Audio Design
  247. 2A3 mounted horizontally
  248. from tube amp to fm reciever
  249. diy tube amp
  250. Cary 805ae xlr option

Content Relevant URLs by vBSEO 3.3.2