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 99 100 101 102 103 104

  1. help needed diagnosing Grounded Grid power supply
  2. Building a tube Model????
  3. EL34 best for triode strapping ?
  4. Subwoofer amp
  5. Replacing Valves
  6. help me on 845 scheme....
  7. Help valve newb salvage some old TV tubes
  8. Cathode follower distortion results
  9. Bullet Proof 6L6GC Recommendation PLEASE
  10. newbie recomendations please
  11. NOS Tubes
  12. Audio Research CA-50 tube rolling
  13. OT on Decaware SE84C-S
  14. Change PP Amp Into Phono Pre?
  15. pl84 ore el84
  16. VTL Compact 100 Monoblock x 2.
  17. Battery bias a 6SU7 in the 300b billies
  18. Speaker impedance roughly 6 ohms, 2A3 SET...
  19. B2 Spice SE tranformer parameters
  20. Determining cap values (old radio)
  21. thoughts on 300b operating points with 3k output
  22. Grounded Grid wiring question
  23. PP-Triode , PP-UL , PP-Pentode-strapped-as-Triode
  24. Found some EC8010
  25. SE PX4 or PX25 amp, anyone built one????????
  26. HAL-O Damping Instruments
  27. An intriguing 6S45P direct coupled 300B amplifier
  28. difference between Cayin and Jolida
  29. 417a line preamp help
  30. kenwood trio el84 push pull schematic
  31. Any comments on this design?
  32. Amp for speaker testing
  33. Shielding preamp power supply
  34. Troubleshooting EL34 push pull amp
  35. amp input volume
  36. What Mullard 12AX7 is better?
  37. Universal audio / Avalon mic pre schematics
  38. Since transconductance amps has become so popular lately...
  39. Mecanical PSU hum
  40. help i.d. this amplifier
  41. Question about a hybrid PSU design
  42. 35Z5GT half-wave rectifier
  43. what rating for diode of 450Volts DC
  44. Telefunken 6L6GC ???????
  45. Why are my amps doing this?
  46. How to calculate the gain of an input-driver stage?
  47. 6L6 vs EL34
  48. protect your amps
  49. Snap Ring Octal Sockets
  50. Suitable operating point for 6SN7 as a differential driver ?
  51. Suitable rectifier
  52. 6N1P & SV83 mu stage driving 845?
  53. Has anyone built a transformer coupled preamp?
  54. Circuit diagram for RCA vintage 6BQ5 amplifier?
  55. Driver valve discussion
  56. Help to choose the tubes!
  57. Why hum in one channel only?
  58. DC heater noise WORSE than AC
  59. Rdh 4
  60. 900v B+ Silly time.
  61. tube rectifier arrangement
  62. Matrix Amp?
  63. Dynaco Stereo 70 amplifier
  64. Ultimate power switch?
  65. AC or DC current for 300B and 2A3 tube filaments ?
  66. 0.1uF @ 3000V Ceramic?
  67. Power Triodes in current production
  68. Anyone in the world identify eico trans?
  69. Mullard 5-20 in triode mode
  70. THX certification, or integrated near THX Quality,
  71. Feedback resistor on Baxandall tone stack?
  72. SE Pentode or PP Triode ?
  73. how does one "voice" a tube amp
  74. Musical fidelity Nu-Vista
  75. Tube substitutions in Heathkit W5M
  76. PSUD2 question
  77. 6L6 class A P-P CFB amp
  78. i have a matched pair of 3cx1000a7..
  79. Different silvering patterns on tube tops?
  80. Help with amp rebuild
  81. Mystery (to me) phase inverter?
  82. Biasing
  83. SE KT88 Amp
  84. Good design?
  85. Auto Biasing
  86. nuvistor MC step up
  87. Corian for tube amp?
  88. 6AQ5 Line stage?
  89. 6550 o/p stage
  90. Help with finding preamp schematic
  91. AVO data for 8417 (Quicksilver) tubes
  92. Any experience with this nice toroidal OT?
  93. 300B SE cathode feedback to grid?
  94. hummmmmmm?
  95. no bass makes pedro a whiny boy
  96. Iron, glass, sand and lead.
  97. Is this any good? Considerations
  98. 2A3 SET Output Transformer opinions/recommendations
  99. My 6C45 DC 6C41, advice wanted
  100. DIY valve
  101. A good SE project?
  102. who will build me this special "line tubeamp"
  103. PI filters
  104. Designing a simple dc filament supply?
  105. Rogers Cadett amp
  106. HI & a few words/questions ...
  107. 6d22s
  108. eBay
  109. Chassis layout for Stereo JE Labs 300BDX
  110. Output transformer help
  111. CAD Program for Tubes
  112. 801A/816 tubes wanted
  113. This little thing might save your life!
  114. What happens if I loose the cathode bias?
  115. beginners ecl82 power supply
  116. 2MHz, High voltage source?
  117. beginner's ecl82
  118. Handmade Electronics Metal Punches?
  119. EL34 types
  120. Spice Model 6CW4
  121. El/pl 519
  122. Euridice symetric to Amp?
  123. use of 6dj8 as driver on a direct coupled 2a3 se amp
  124. Western Electric 275A Schematic
  125. Where to source 833 power tube
  126. capacitor reactance
  127. Overvoltaging resistors
  128. EL84 Push Pull amp.
  129. Power supply load capacity
  130. Tube preamp problem
  131. E88C (6DL4/ 8255), any circuit for it?
  132. Is there a name for this drive method?
  133. 6BM8 Question
  134. Tube mic preamp/mixer
  135. Please cast your votes..or make a suggestion or 2
  136. RIAA in LTspice
  137. Parallel ECC82 comment please
  138. A push-pull amp i can live with
  139. Sub-miniature russian amp help
  140. Tube Optical-Isolation Unit
  141. MKP in the Powersupply.
  142. 6SN7-GTB Globe (Chinese)
  143. 12BH7 Specs
  144. Is this worth my time?
  145. choke value
  146. ipod + tubes
  147. Leak tl/25+ OPT selection
  148. Gabevee's Maggie (MAG1515)
  149. Can partial feedback be as effective as global fb for decent damping factor?
  150. Which trans wire is which?
  151. What's wrong with this tube?
  152. F: great sound control with ECC82
  153. 30W UL 6L6P-P amp
  154. 300B stereo SE amp and PP2A3 monoblocks
  155. 6S45P matching
  156. Inductors made for crossover in an amp?
  157. PX4 or AVO44 or AV044 based SETA
  158. power conditioning
  159. Microphone preamp with compressor
  160. Current production rectifiers
  161. mu stage help...
  162. Non-Polar caps to cathode bypass
  163. 5u4 / solid state switchable supply
  164. 12AX7 sound ... going with the trend
  165. 6L6 PP Design Recommendations?
  166. EL 34 30W ultra linear
  167. Convert Audion Silver Knight PP monos
  168. Too much gain
  169. The long lost linear gain stage
  170. Philco power tranny diagram/5u4 supply
  171. Kt88 Se
  172. supersize me, please. (powersupply)
  173. Seeking advice on "Circlotron" cross-coupled feedback OTL design
  174. Best 6CA7?
  175. ECC99 line preamp
  176. variable regulated negitive grid supply
  177. hum loop advice
  178. Against all odds...
  179. 6as7 se amp
  180. Help .. tube amplifier .. 1st !
  181. winding a toroidal pp output
  182. solid state Vs Tube Rectification
  183. Cryoed Tubes...what To Expect?
  184. I'm looking for 6H13C tubes
  185. Which ST-70 ?
  186. Some questions about Van Scoyoc X-coupled splitter
  187. Quicksilver 8417 bias runaway?
  188. Most effective use of valve pre & active xover
  189. Tube possibilities for 2.9k-ohm speaker?
  190. Help on Preamp Mute Switch
  191. Fixed bias supply problems...
  192. Help with VTL preamp...
  193. question about 811A and 572B
  194. Dual Stereo Cathode Folower Setup
  195. tube tester
  196. Audio Innovation 1000 SE
  197. 6as7 PP Schematic Help
  198. Newbie Question: Need help diagnosing a problem, tubes on, music fades out quickly
  199. 7591EH failure
  200. opt frequency response
  201. Anyone got any opinions on this?
  202. My ForePlay Processor Controlled Preamp
  203. Tube ghetto blaster ?
  204. Help trouble shooting
  205. "The Fisher" tube amp 7189 output tubes
  206. UTC output transformers specs
  207. Regulation options for 807 g2
  208. My Mullard 5/20
  209. KT88 power amp
  210. High voltage regulator
  211. Filament voltage ?
  212. Unity Gain Unbalanced to Balanced Phase Splitter
  213. Anyone know the g1-g2 capacitance of 6AU6?
  214. Any good Transformer or Tube manufactureres in India ?
  215. McMartin MA-20?
  216. Help with Jolida 302A
  217. need 13fd7 curves
  218. Drd Kt88?
  219. miniature tube amp
  220. 300B pp schematic found, what about it?
  221. Tube Output Stage
  222. se otl
  223. Toroidals as OPTs?
  224. Tube advice
  225. Understanding OPT primary Z and load matching.
  226. help with Optomal placement of output transformers.
  227. 50h B26
  228. Anyone know what this is?? Strange tube/ bulb.
  229. Please ID output transformer
  230. Cheap and Easy Tube Phono Preamp
  231. Carbon film vs metal film resistors in a stepped attenuator?
  232. Alps pots vs. TKD pots? TKD worth the extra$$?
  233. Opamp as tube driver: Protection ideas?
  234. Looking for schematics CROFT OTL APPARITION
  235. ISO (new Tango) info...
  236. Noob Question on Driver Stages
  237. High Voltage Reference
  238. DIY valve amp
  239. Inverted Interstage Transformer
  240. regarding to the design of iron-cored inductors (chokes)
  241. Trying to find an amp
  242. 12v tube output stage for cs43122 based dac?
  243. Wattages & Loudness: ?I'm Lost?
  244. cmrr of common cathode
  245. The Next Step. (and budget tube amplifier kits/designs).
  246. non-diy amplifiers with choke input power supplies
  247. Does a cathode bypass capacitor reduce hum?
  248. a tube convert tries a mosfet
  249. Motorboating in leak 20
  250. New MC preamp is comming alive

Content Relevant URLs by vBSEO 3.3.2