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 99 100 101 102 103 104 105

  1. Bell Vintage High Fidelity Audio Devices - both Tube and Solid State
  2. Small Tube Amp with Hum
  3. tube rectifier question
  4. Unison Research S6 schematics
  5. vacuum tube amplifiers should be produced like this?
  6. 6d22s to 6cj3
  7. pot in tube preamp
  8. Mable Audio vs. Suppo audio sound quality
  9. swdfasdfsdf
  10. measuring heater voltage
  11. Need a circuit around these tubes.
  12. Single-Ended 13E1 amplifier
  13. Whats' the max allowable / reasonable ripple in SE amp?
  14. What amp kits are out there?
  15. ECC84/6N14P for audio
  16. PSU ignorant
  17. How to define a quality OT?
  18. Looking for some build advice
  19. ASC oil caps vs M-tube cap for ps
  20. SS CCS and distortion
  21. the valve with no markings
  22. Pentode AB1 design school???
  23. Capability of Sony/Tamradio SE Output Transformers
  24. my CELLINI triode amp
  25. 45-based SET -> Pass Labs F4
  26. Testing Amplifiers - Speaker or dummy load
  27. Quiet amp hums with signal source or input directly tied to star earth??
  28. amp output testing
  29. S5 Amp Comparison?
  30. How to Ground a Preamp PCB Board?
  31. RH807 / 6L6GC g2 issues
  32. 2010: Replacement for Black Gate WKZ 100uF+100uF 500V
  33. Converting Dynaco ST70 Power Transformer for 12.6V
  34. Simple CF with 5687/6900/E182CC
  35. World Audio Design 5881 Schematic needed
  36. PP triode transformer load
  37. 6V6 PP load line
  38. Need help to under stand this 6n3 Kit from ebay
  39. Blown left channel
  40. Tube preamp build help-heaters
  41. Medium Power SET, EL156 based
  42. Concertina Splitter question - Need help
  43. 6V6 amp - schematic options
  44. Lectron pa50+jh50
  45. 4pr60b valve
  46. Transformer phase splitter
  47. Help! ground hum
  48. Question regarding Leak Stereo 20 and 6SN7 line stage preamp
  49. Recommended upgrades for Yaqin Tube Buffer ?
  50. 6J5 or 6S4 mic amp?
  51. ST-70 build, ideas and advice
  52. Yaqin MC-100B Help Needed!
  53. Preamp Aikido : 6ax5GT,12au7,2c51
  54. Heater of tube
  55. R-Core Winders
  56. 1946 philco amp, tuner, record player
  57. otions for drawing tube schematics on Mac..?
  58. Push/Pull Plate Load Choke - how to figure Inductance?
  59. 6aw8-a tube question
  60. Newbie needs a point in the right direction
  61. Minimalist PL519 OTL?
  62. Telefunken schematics
  63. parallel pp EL84
  64. AD1 Operating Question
  65. 6П3С-Е Russian NOS: Gas Problem
  66. Favourite EL34 circuit
  67. Medium power SET with parallel OP tubes
  68. sds labs into Pas3
  69. Low voltage 6922 preamp...wanting a schematic
  70. Voltage Gain on Long Tailed Drivers
  71. Purpose of 5842 tube?!?
  72. MA XDSE KT88 vs YAQIN MC-100B KT88
  73. JBL Amplifier story
  74. Recommended spacing for multiple 5AR4's
  75. Cap choices coupling
  76. Output transformer for PP EL34 source
  77. mini max pre
  78. use 2 ohm speakers
  79. Ask tube rect 5u4c and JJ caps
  80. Adding caps to prevent oscilation in AF 5687
  81. Williamson on EL84. Is it worth doing?
  82. CCS and regulated B+
  83. Garter cross-coupled feedback
  84. soundcard protection Z ???
  85. Using a CCS on SE Output Stage
  86. First amp build... help please!
  87. multiple independent grid biasing from 1 mosfet
  88. Eico HF-81 modification opinion
  89. 4K or 5K Output Transformer
  90. Noisy input on Michaelson & Austin TVA-1
  91. Precision Electronics S-35 help,
  92. Rogers Cadet 3 Problem
  93. Triode Electronics VS Hammond
  94. TRIODE OPERATION USING THE SCREEN GRIDS AS THE CONTROL GRID - this work ?
  95. Start up delay needed???
  96. Connecting a stereo amp as a mono-block
  97. HQ-DHT (All tube DHT amli) 26-45-2A3
  98. 24A tube in triode mode, help !!!
  99. Amperite Ballast
  100. Need super quiet 6.3V filament supply schematic
  101. (Sound Space)Houston 2A3 Power Amplifier
  102. James Burgess 2A3 Monoblocks
  103. Funny tube tale from southamerica
  104. RCA 7189 Black Plates
  105. Preamp nasty noise and hum
  106. EDCOR VS One Electron
  107. Parallel output tubes/valves in push pull. Advantages/disadvantages?
  108. Robinhood output transformers?
  109. looking for help diagnosing volume loss on tube amplified reel to reel player
  110. Question about power consumption Hagerman Cornet Octal
  111. valve rectifier in PSUD
  112. Can you explain what this is ?
  113. volume rise with frequency problem
  114. 1 + 1 = 3 :)
  115. What would the perfect multi-way speaker for a tube amp look like?
  116. GU50 compared with EL84
  117. Counterpoint SA-4 manual and schematics
  118. Ever heard of a Valvo 16ECC ?
  119. the Reversal SRPP
  120. Want to build a C3G linestage
  121. 30A5 tubes
  122. Good speakers to match a K-12
  123. Driving Long Cables, how much current?
  124. twin triode question
  125. Am I going to blow up my 7189s
  126. How is wattage calculated when only using a single section?
  127. Counterpoint SA5 problems and a question.
  128. Headphone Amplifier 6922EH
  129. Fuse Clip for Small Plate Cap Use
  130. Advice sought on medium power triode for tube headphone amplifier
  131. Not the 111M; A Precise 116 Tube Tester
  132. Input stage
  133. Does anyone have any FFT plots from real Class-AB tube amps?
  134. Testing for a Damaged Output Trafo
  135. What has happened to WE Huntsville lately?
  136. Output Transformers Sun HCT 1003 KT
  137. Plexiglass case for small tubes?
  138. 100 Best Sound Tubes
  139. Input tube bias
  140. eschematic amplifier sinle end 12at7 6av6 6bq5
  141. Wiring - Audio Note Transformer Parallel Single-Ended 300B
  142. HV using zener diode
  143. Akai M8 rebuild up and running!
  144. Best current production 2a3
  145. what happens when plugging a stereo source into mono jack on a tube amp?
  146. Transformer coupled Gainclone idea.
  147. Audio Research VT100
  148. output transformer turns per volt
  149. valves and metal cones= bad mating?
  150. Why do you need a grid to ground resistor on a line stage?
  151. Need some help with RIAA Preamp
  152. Swapping transformer cores
  153. got hold of a bunch of tubes...
  154. output transformer secondary configuration
  155. WE/Ultrapath B+ Where?
  156. Blending 12ax7 parallel gain stages
  157. Sudden spark.
  158. Priboj Reborn
  159. Misunderstand of sijosae schematic
  160. 12AX7 Identification
  161. GM70 Datasheet Error!!
  162. Using old Hammond iron
  163. Need confirmation on LED bias for circuit
  164. Tube Parameter "Attenuation, Harmonic" What is it?
  165. Tube amp with Dual Triode
  166. Fisher X-101-C bias question
  167. DC Current-Regulated 300B filaments?
  168. Anyone ever use DC to heat rectifier tubes?
  169. Tantalum Resistor Watt?
  170. Help Choosing Power Supply Voltage Regulator Aikido Phono Amp
  171. Best sounding remote control volume
  172. plate and screen voltage
  173. 12AT7 plate voltage
  174. Latest LTspice giving crazy FFT results
  175. Dynakit PC-3A as a balance pre?
  176. e283cc better sounding than?
  177. Porchlight Scratchbuild
  178. No output and Loud squeals! Help!
  179. Low mu triode for phase splitter
  180. Help figuring which is the center tap???
  181. Help with Paco SA-40
  182. Best tube/sonics
  183. One Half 12AU7
  184. Gyrators to replace PSU chokes?
  185. Output trannies for 6as7
  186. 2 Toroids = 1 Isolation Transformer?
  187. Finding Transformer Building Supplies
  188. Sagging Heaters
  189. Kofi Annan in: "Kofi's Baby Huey"
  190. Point to point wiring help
  191. help !! PTT2s Line stage
  192. Rickard Berglund, Sweden
  193. "The Sussex Homebrew Valve Tester"
  194. clipping
  195. Wanted: a couple of UNF bolts
  196. H-Bridge Amp Design
  197. need help with yaqin mc10l
  198. Watt the?
  199. DIY tube preamp with 5687
  200. Help with tube stereo build
  201. Tube recommendation for speakers
  202. Eliminating volume pot?
  203. CXPP100-MS-3.3K or CXPP100-MS-4.2K
  204. tube power supply voltage
  205. Driver Bypass Cap - Value?
  206. Tube bases and plate caps rant
  207. tube dual regulated psu needs amp
  208. Help me choose output transformers
  209. Verdier dual regulated tube psu
  210. Aikido Phono Amp Output Tubes 12AU7 and 12AX7?
  211. Mullard EL84 ID
  212. schematic request for transformer with 4k primary and UL taps
  213. Plate-Grid feedback: How to get better than DHT performance from cheaper tubes
  214. Anyone going to the Dayton Hamfest?
  215. More class D madness
  216. the SuperHybrid
  217. Tecon Model "55" final mods(?)
  218. Hammond P-T125E OPT
  219. Highbred Amp "TUMOS" Sounds good?
  220. 300B SET which chassis design
  221. Help with creating a simple tube HV regulated supply
  222. Tube Sockets for oddball miniatures
  223. Bogen chb35a
  224. My last el84 PP tube amplifier
  225. Ultrapath - Advantages?
  226. Phono preamp with c/em2
  227. 12AY7 plate current
  228. OPT identification
  229. Resistor values at supply to anodes
  230. Typical output impedance for tube amps
  231. Problems with EM87 stereo level indicator for computer line out
  232. VR tube recommendation
  233. Mills MRA-5 resistors in tube circuits
  234. B&K Dyna-Quik 500 shows good tubes as Shorted
  235. Output transformers
  236. dbx 386 upgrade
  237. Sub 6n6p for 6n1p?
  238. SET Amp History in Japan
  239. Grid Bias or Cathode Bias
  240. Oscillating CJ PV-5
  241. FireFly Single Ended Tetrode
  242. Aikido front end for a SE 6C33S
  243. Ground Plane vs Star earth
  244. Circuit board with long post??
  245. ecc804 as Phase Splitter
  246. What can you do with a 3a5?
  247. Auto Wave soldering sockets
  248. Using diode for biasing
  249. No bass in 300b amp
  250. Tube socket and pin cleaning

Content Relevant URLs by vBSEO 3.3.2