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

  1. Preamp grounding
  2. Express PCB and POV-ray
  3. Looking for circuit of SE amp. for 4D32
  4. 865 tetrode in triode mode...WOW !
  5. MP-2A preamp
  6. Is a 7 watt per channel amp enough
  7. Help: Interstage Transformer for 7788 (E810F) Tube in Triode ?
  8. Transformers
  9. Pentode curves for GU 50 SE amp with 700V B+
  10. Valve op-amp pre ?
  11. Use only half of OPT secondary?
  12. On/Off cycling
  13. Tube operating points help
  14. OTL Heater Questions
  15. tube output question
  16. RIAA LCR Mythos
  17. first tube amp
  18. M135 retubing and eventual modification
  19. Taylor 211 vs. GE 211
  20. regulated
  21. What should I do with these eico hf-12's?
  22. Dynaco mk3 clone hum issue
  23. First DIY project, which SE tube amp should I build?
  24. 6n11 tube headphone amp
  25. Kt88 Pin alignement problem=did a mistake
  26. LTspice Frustration...help, please..
  27. Bias mods
  28. Maida tracking preregulator?
  29. 230 VAC to 2*140 VAC transformer - 20VA
  30. Re gettering?
  31. Distortion rise on OPT
  32. How to build a transconductance tester for small driver tubes?
  33. Musical Fidelity X-10D Cap Mod
  34. 6N3 & 6E2 tubes.
  35. help with local nfb
  36. What should I build
  37. leak st20
  38. Wright Audio WPA 3.5 Humpot & schematics
  39. the old light bulb trick
  40. Dynaco ST70 KIT - your opinion please
  41. Wire for tubes using a plate cap?
  42. Lundahl LL1660 OPT Franks 6SN7 linestage
  43. GU-50 PP + 10k:16-8-4 Ohm ,20w OPT..what is the best to do?
  44. Tomiko 10k PP transformer?
  45. Powerdrive for higher grid wattage A2 transmitter tubes
  46. Marantz Model 5 Amps and Model Seven Preamp
  47. How to calculate output transformers
  48. Grounding considerations with external PS
  49. Cathodyne fet buffered balanced line out
  50. 807pp + input phase splitter
  51. leak st 20
  52. Questions about Champ mods, NF loop and more
  53. Does anyone know what this is!..???
  54. Thought Exercise: Submini Circlotron OTL Amp
  55. Preamp Grounding PCB
  56. Manley 440: Tubes red cherry after replacing old tubes with new ones
  57. EL95 Parallel Push Pull design
  58. What is the ideal low-noise heater power for high-power output tubes?
  59. Beijing 6N6T
  60. Tube recomedations for my first tube amp
  61. Tube Load Lines and B+
  62. Hybrid rectifier possible in PSUD?
  63. Hickok calibration
  64. Bias voltage slower to come up
  65. Can You Reccommend a 6922 tube?
  66. Miniblok Resistor Parameter Modulation using Pots
  67. gm70 driver tube tests
  68. 300B Globe physical dimensions
  69. DIY Fisher 800b into a mic pre
  70. OPT Modification Question-Help please?
  71. Cant find origin
  72. Fixing Sneaky Oscillation in P-P Amplifiers
  73. fu-29 Audioromy
  74. Almarro A205A as experimentation platform
  75. Thoughts on layout and potential for improvements
  76. What is the difference between "rectifier tubes" and "power tubes"
  77. uTracer...
  78. EL84/UL84 single valve amp
  79. Mic preamp - strange high frequency roll off problem
  80. Tissbury audio
  81. midification to srpp preamplifier input voltage
  82. DHT SE amp with ultrapath
  83. Tube mic preamp problem
  84. Output transformer: reasons for destruction?
  85. Bewitch KT88
  86. SE OPT Wiring
  87. maggie 185 to stereo guitar amp?
  88. Budget 300b tubes recommendations
  89. Hum problem through one channel
  90. Audio Research LS22 DIY
  91. 300V Tube Power Supply From 120VAC Without Rectifier?
  92. NOS Tube: Black Spot on Getter Flashing? Help
  93. FET Source Follower Distortion
  94. TUBE/MOSFET/BJT hibrid amp
  95. PYE Black Box amplifier
  96. Tube tester
  97. what OPT for 211 parallel SE amp?
  98. Opinions for 6550 bias.
  99. 832A as a Single Ended Tetrode Amp?
  100. DCPP - "Engineer's Amplifier" : Need a bit of help
  101. quicky rebuild 6v6 to 807
  102. Old fire bottles.
  103. Regulated Power Supply using 6550
  104. GU50 SE vs 300B SE tube amp??
  105. Help with voltages
  106. New to valves & this forum.
  107. new amp 2a3 pp
  108. Telefunken EL153 SE circuity
  109. RH 84 Variation: Direct Coupled Pentode
  110. Single Transformer, two valve rectifiers
  111. Capacitors for Radio Frequency Amlifier and Converter Oscillator Tubes
  112. Tube Screening Cans
  113. PSU grounding
  114. 6AX4GT TV damper
  115. plate on chinese 6L6 red on one side
  116. FM stereo decoder
  117. Under the Christmas Tree - Valve Amplifiers 4th Ed.
  118. Using those dern 1625 tubes: a simple SEP amplifier
  119. Pairs of resistors in opposite directions
  120. 45 spice model
  121. APEX 460 Tube mic modification
  122. EL84 and 6BQ5 are Same?
  123. Simple hybrid amplifier (35W/8Ohm)
  124. Yaqin mc 10l or qinpu 6000 mkii
  125. Reported attack site?
  126. LCR RIAA Phono with DHTs
  127. New Here -Would Like to Build
  128. 12E1 push pull poweramp
  129. marantz model 9
  130. I would appreciate some helpfull advice from Aikido builders
  131. Dynaco ST70 big Snorting noise.
  132. Good Soft Distortion
  133. magnavox 8301 revamp, need's a second look
  134. Circuit or schematic for current source of 7.5mA
  135. Sakuma's bleeder tubes and series connected transfomers
  136. Tube measurement
  137. adding tone control to SE 6v6 amp
  138. Easy Little 6L6 SE
  139. knight KA-55
  140. Hum in tube amp
  141. Lundahl LL1660 10 mA Alt V
  142. 12au7 valve preamp (again?)
  143. Simple DC heating question
  144. 6146B?
  145. Reduce gain on power amp?
  146. ES9023 DAC(subbu) + Tube Preamp with Remote and R2R volume control(Danzup)
  147. AC heaters question
  148. Anyone tried this Mcintosh c22 knock off.
  149. Help me to find pins for tube socket
  150. HT delay pcb...
  151. Power supply, heater questions...
  152. Heathkit AA-151, to separate pre-amp advise needed?
  153. grounding
  154. 2 Stage GM-70 amp in A2... possible?
  155. GlassWare Janus Shunt Rectifier Tube Swap
  156. Schematics
  157. SE 6B4G driver tube options?
  158. seeking datasheet of 6J2B-V in english
  159. Nailing Hum in my Phono Stage
  160. Shaving voltage off HV supply?
  161. LEAK T12 and POINT ONE - worth having ?
  162. Quicksilvers Mid Mono Schematic?
  163. Russian & East European Tube Factory Logos
  164. Lampizator Channel
  165. RIAA triode or pentode
  166. Cute Little Tube Oscilloscope, Thought I'd share.
  167. Is it really possible to deliver 2W into 40 ohms with an SET ?
  168. se
  169. Connecting Two Amps to Common Input
  170. Wiring Aikido using LSA/HPA switch
  171. Most exotic SET power amplifier
  172. Help with rogers cadet 3 integrated
  173. Opamps for servos in tube amps - Christmas gift from LT, 12-12-12!
  174. tube amp hum........normal or suggested fix?
  175. Building a beast: Stereo EL84 auto bias PP tube amp
  176. Becker Brescia auto radio
  177. Double feedback pentode Power Stage
  178. Anyone Using Guiguang 300b tubes?
  179. Where to get Audio Note Gaku-On service manual?
  180. Sanity Check - Input Transformer Overshoot
  181. TOA HA-355 vintage tube PA amp schematic
  182. EL34 PushPull UL Amp
  183. 6L6G emission too high
  184. Need help designing BIAS circuit for old Bell amp
  185. Heathkit A-5A 6L6 PP Integrated Amp
  186. Where to put the meter
  187. Radii GS-40pp
  188. Concept dilemma (pre/pwr/spud content)
  189. What to do with these Eimac tubes?
  190. Driving 211 with VT25 or EL34?
  191. DIY AMP start project - Help choosing one
  192. Pilot 248B Amp with weak channel
  193. 6H30 VA stage?
  194. What is the best way to connect DC filaments?
  195. suggestions for a parallel feed 45 amp?
  196. Counterpoint SA 5.1 repairs
  197. The Morgan Jones mini tube headphone Amplifier
  198. Borbely headphone amp
  199. Found An Amplifier In My Basement I'd Forgotten About & Learn It's Sought After
  200. Floating OPT oscilloscope measuraments
  201. I Wasn't Away That Long, What's WIth The Price Hikes On All My Old Toys?
  202. Channel voltage mismatch
  203. OS70/1750 datasheets
  204. Beautiful Chassis
  205. 6A4, 46 and 47...excellent sound tubes !!!!
  206. Is it Overkill to use Duelund Caps in Power Stage (Counterpoint SA-5.1)
  207. Quicksilver M135 Schematic?
  208. recognize this old amp?
  209. grey fogging inside 6sn7
  210. Point to point or pcb?
  211. Quad query
  212. Fixing a Velleman K4040 - Buzz HIss Crackle Blown Tubes
  213. Found Original Genalex 12AX7..Need Advice..
  214. OPT power rating and amplifier power
  215. 6BG6-GA
  216. EL84 driving EL84 SET with fixed bias
  217. P2P 6CG7 Input Buffer
  218. 865 in triode mode...anyone ever tried it?
  219. PP KT88 Amp Low frequency Ringing
  220. World audio designs kel34
  221. Glassware Audio Design
  222. 2A3 mounted horizontally
  223. from tube amp to fm reciever
  224. diy tube amp
  225. Cary 805ae xlr option
  226. ST-70 mono makeover
  227. breaking in audio capacitors
  228. Question about 6V6GT amp schematic
  229. Sherwood Schematic
  230. Ever hear of a D7L1 or D7L3 YR7 tube?
  231. Psvane Replica RCA 2A3 tube - WR2A3
  232. 845 Driver Circuit
  233. ADJUSTABLE BIAS MOD KIT
  234. Gold Lion B749 12au7 Thoughts?
  235. Siliconray SRK 09 tube amp kit help
  236. Quantum minstrel
  237. Does anyone know how John Lee Hooker recorded this? (1949)
  238. Please Identify these black capacitors.
  239. New Tubes too silent (6P15P)
  240. best sounding & value amp kits/designs?
  241. Custom Woodwork For Tube Amp
  242. Tube 2E22 in triode mode
  243. Has anyone built an OTL amp with switch mode power supplies.
  244. Altec 15067 transformers
  245. Some interesting findings with transformers
  246. Bogen KO-60 Output Iron
  247. What would you do with Scott 222D IRON?
  248. Aikido vs CCDA
  249. wiring color code
  250. Maverick Audio TubeMagic D1 DAC

Content Relevant URLs by vBSEO 3.3.2