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 99 100 101 102 103 104 105 106

  1. RCA receivers / amps
  2. Triode PP design questions - where to add gain?
  3. Push Pull Tube Amplifier with CCS
  4. Replace EL34 in the powersection with MOSFET?
  5. McIntosh MC275 problem.
  6. converting pentode data to triode-strapped? The 1609 pentode?
  7. Moscode 300 Manual/schematic
  8. Need help with new amp design
  9. 4699 SEP (unusual cathode feedback?)
  10. DH filament side matters?
  11. FU50 + 6N8P + 5Z3P Amplifier
  12. Collet wire connector for 300B socket?
  13. KT-88, KT-77, Russian 6SN7 makes "pops". Should I touch their pin with an iron?
  14. Low voltage Tubelab sse
  15. Tube Power Supply Question
  16. Would there be any harm using 10K OPT for 45 tubes?
  17. Restoring the first Pye HF25
  18. Jolida FX10 mods
  19. Help needed - DIY amp not working; first time powering up
  20. hybrid output
  21. EL86: push-pull for home
  22. Input transformer question? Help identifying
  23. Anyone ever tried building the Feral Eye 2A3 PP?
  24. Schade Feedback In A Push Pull Differential Amplifier?
  25. PSA: new diy tubes sub on Reddit
  26. Hum/Buzz in a tube PP amp
  27. 300B+6GL7 SE stereo integrated amplifier
  28. Bias tap on b+ or separate winding?
  29. Arcturus No. 12 tube
  30. SainSmart 6N3 pre for Pass ACA
  31. Single ended MM tube phono amp
  32. 5U4G schematic for 4x6SN7 Stereo Octal Akido Preamp.
  33. ECL82 amp from old magnetophones
  34. Bogen MO100A with KT120 ??
  35. Someone sales out trafos Jensen transformers in europe?
  36. Book recommendation?
  37. Sanity check? HV supply for 125wpc sweep tube amp
  38. 6922 Technical info (help)
  39. Help a noob with respeccing a transformer for silicon rectifiers.
  40. How about this phono idea
  41. Scottkit trouble
  42. Rectifier - tube or semiconductor?
  43. How to remove tube metalization
  44. Old Dynatron Information
  45. good driver tube with 150mA heater?
  46. Tell me what this is
  47. Switch between tubes with relay
  48. Need some help with my Palmer Eins
  49. A rare tube in my hands. Info please.
  50. Dealing with Heater Elevation/Ground Reference for aux circuit
  51. 6GK5 OR 6AH5 for phono head amp
  52. Parallel triodes: best connection?
  53. Which resistors to replace burned ones in Dared DV-300b monoblocks
  54. Unusual tube preamp, will it work?
  55. Eico HF-81 with Pre Out?
  56. volume control by pass power tube
  57. Single End Transfomers, The hysteresis loop and maximum current
  58. DC at output on startup
  59. Star ground in an LCLC filter
  60. Yet another ECC82/12AU7 Line Preamp
  61. Clarke and Smith EL84 Amp
  62. Are rectifier tubes still relevant? Why would you use one, or avoid using one?
  63. replace 5R4GA to WE 274B
  64. 6sl7 vs 6n9p vs 6n9s
  65. MAC bifilar output stage test proof
  66. Dummy load for bench testing tube pre.
  67. Brook 12A Mono blocks
  68. Maximum Ic before auto shutdown
  69. Octal Akido HP amp as pre amp
  70. loudspeaker series resistance question
  71. Pop when power on
  72. Which preamp a better match for low-volume listening?
  73. Balanced Signal, Phase Splitter in Push Pull topology
  74. Pin 4 Grid 2 Resistor
  75. Weird voltage w/ LM1084 regulators / #27 filaments
  76. My Audio Research SP-3-A1 Restoration and Questions Documentation
  77. Almarro a318B
  78. Bakelite and Car Brakefluid
  79. Chinese 6N2 / 6P1 schematics advice needed
  80. Operating point of GM70
  81. 50W 6L6 (6P7S) how to replace tube ccs for solid state?
  82. Star Grounding for a Line Stage Tube Preamp
  83. ID Kit Amp Help. K-12 Tube Amp or Similar?
  84. Are they still making Golden Dragon?
  85. About LL1660/18mA
  86. ST-120 tube set
  87. Newb seeks to drive DVC 4+4 ohm 500w RMS subwoofer with tubes.
  88. The 33 Amplifier
  89. Build Your Own Vacuum Tubes
  90. Can Anyone Tell Me What This Pot Does in AN Soro?
  91. Which high-voltage MOSFET for source follower?
  92. Stacked Power Supply
  93. A Practical Circlotron You Can Build
  94. Noob questions
  95. JohnBlue TL66 Monoblocks hum problem. Help please
  96. ECL82 SE 1,8W
  97. RH slayer
  98. Cary SLP-90 preamp power supply
  99. phase splitter with low distortion
  100. First PSU Capacitor
  101. Transformer locations
  102. Chinese tubes
  103. ez81 power supply
  104. SE class A2
  105. Dynaco MKIV 7199 driver circuit
  106. Be Cautious with Obbligato Film Caps
  107. Someone out there....type of tube ?
  108. admiral 5t4a
  109. Pentode Screen Resistance (rs) Estimation Example
  110. Grounding linstage help
  111. What is this tube?
  112. Do 300b tube have a "guide pin"
  113. Effect of Weak Mains Power
  114. Croatian Triode Festival Zadar-2016
  115. Using dht self bias resistor to lift idht front end heater
  116. Philips EL6411/01 amplifier
  117. Quad II output transformer
  118. Mosfet or other semiconductor substitute for cathodyne?
  119. 6SN7 preamp tube alternative with less gain?
  120. Hagerman Cornet Octal planning help and build
  121. output transformer opposing windings/ please explain
  122. Preamp Transformer overheats
  123. Finishing ASC capacitors
  124. Can't identify this tube?
  125. 6SN7 pin 4 signal input
  126. Help - Tube PSU Design
  127. Little help for a newbie?
  128. Has anyone built this phono stage you can buy on ebay as a circuit board.
  129. pl504 Vacuum tube
  130. Tubes in the Unballancer
  131. Quad II Amplifier KT66 Valves/Tubes and Carbon Composition Resistors
  132. ecc88 preamp
  133. Tube socket center post
  134. Troubleshooting bias of old diy amp with Acrosound TO-300 transformer
  135. Dynaco Mark III with noisy transformer, making hum.
  136. Power amplifier EL 34
  137. Replace 6SN7 to E88CC on HP amp 90VDC plate capable?
  138. 1p24b Russian tube
  139. Tube power supply
  140. Tube-O-Philes, Please help with this chassis search
  141. WOW, I want one !!!
  142. B&K dyna-quick 550
  143. What is this? Valve Amp?
  144. CCS instead of a resistor in the cathode of a cathode follower?
  145. Please comment on D3a tube testing
  146. ID tube amp kit 8 watts stereo.. unsure what tubes to use
  147. Mixed bias for 6336a or 6AS7 output tubes?
  148. Vintage Tube Amp kit - Can it be refurbished?
  149. Any experience or opinions about this 300B Chinese DIY Kit ...
  150. Measuring "high impedance voltage" with digital multimeter
  151. SE (UL ?) HI FI project needs help
  152. Can anyone verify this math? MC 2205 Watt Scale
  153. Generic design question for Pentode CCS
  154. Using big power tubes as buffer?
  155. Reason for tube converter
  156. Valve Mosfet Hybrids: a solution
  157. Protecting Plitron OPT
  158. DHT line stage 26, 01a or 101d
  159. Tube manufacturers
  160. Pinnacle Datasheets
  161. Tube preamp
  162. Can I use 1.1 instead of .47
  163. Project: Add a DAC to Pete Millett's low voltage hybrid tube amp
  164. Speakers for S5 K-16LS Kit
  165. Inexpensive B+ Batteries
  166. Leak Stereo 20 Capacitor Replacement Question
  167. Dynaco Mark IV exploding bias filter capacitor
  168. Anyone familiar with the Raphaelite sinovt 2a3-845
  169. Building monoblocks, go Dynaco MKIII or.....?
  170. Priboi (Surf :d) output transformer possible problem
  171. replacing ECC83 with ECC82 in stereo amp
  172. Counterpoint SA-5000 FET Buffer
  173. C3M 300B SET build, input appreciated.
  174. K12G Quiet Channel
  175. Weird "holes" in getter
  176. Radiotron A530 6J7G-6V6G-2A3 PP Amp
  177. Tube Identification
  178. Can i sub a 50K for a 100K volume control?
  179. Are the 12B4 and 12b4A interchangable?
  180. SE or PSE amplifier with 6N6P driving the 300B tube
  181. About 300B SE heater w/t Coleman regulator
  182. I just picked up this incredible bench top meter that measures everything.
  183. Should my TVC x formers be input or output
  184. Preamp Chassis Layout Advice
  185. Russian Audio Tubes
  186. SE UL EL 300 / ECC 83
  187. Grid Chokes
  188. Pot for project test
  189. Interpreting "Horizontal Osc. Service"
  190. My Take on a DIY Valve tester
  191. 6Н6П vs 6Н6П-И (gold grid etc claims ? )
  192. GU 19 VS GU 19-1 What's the difference ?
  193. please advice 1K Vdc power supply
  194. Has anyone used an opamp to split phase for a tube amp?
  195. Advice for budget valve amplifier
  196. S-5 Electronoics K-12M amplifier: lack of plate to grid coupling caps
  197. Eico ST70 needs a preamp output....
  198. Damper diode slow start
  199. KT150 SE based on Mikael's KT88 Schematic
  200. Oil filled capacitor
  201. Octal driver tube choice
  202. Anyone ever clone a Audionote P1 SE
  203. Bogen DB212 phase-inverter
  204. EAR 869
  205. # triode 31 line pre amp
  206. Choosing The Iron For A SE OPT?
  207. Swap EL34 with 6L6 or 6V6
  208. Bridgeable floating output transformer help
  209. tapedeck playback amplifier
  210. Design based on the Output Transformer
  211. UL Push-Pull Tube Amp (mono combo)
  212. Power transformer for SET: toroid vs EI core
  213. Tektronix 547 Oscilloscope reserection
  214. can I use 12v to run 6C33C tubes???
  215. How to understand the data sheet for this 'universal' SE output transformer?
  216. DIY Stereo Amp
  217. el84 and 6aw8a
  218. Tube amp reboot Re: Chinese 6P6P (6V6) Push-Pull Tube Amplifier Kit
  219. 2A3 driver
  220. Tube Phono Preamps
  221. Newbie. Balanced 2A3 SE amplifier information
  222. Tube rectifier supply help
  223. cathode follower - please check my circuit
  224. Output tube stage 1578 for no DAC
  225. Bias for 300B
  226. Pots value in tube equalizer
  227. 'Real world' max plate voltages for 6DJ8, 6P15P?
  228. Lower load resistance for lower distortion (6L6 PP)
  229. Transformer Hum.
  230. Hmmmm Star ground
  231. Updating a HeathKit IT-11 capacitor checker
  232. Taylor T20 triode - anyone used these?
  233. Filament DC power supply for 2 valves
  234. Tubes availability
  235. Tube power amp bad fit for ML?
  236. SLA Battery (Filament Supply) DC Reference limits?
  237. Citation I, Citation II, and another Citation I
  238. tube amp damping / weird bass response, speaker movement
  239. Convert valve output stage to pre amp
  240. 6HJ5 SET
  241. A different type of EL84 SE
  242. Transformer covers; steel or aly?
  243. Triplett 3444A tube chart
  244. polyester or polypropylene or other??
  245. Opinions on SET transformers for 307a amp
  246. Strange experience with Dynaco ST70 input tubes
  247. Need advice regarding SET 45 Amplifier
  248. "Low" B+ Voltage Amplifiers
  249. Small power all russian tubes single ended amp
  250. Noob question on triode

Content Relevant URLs by vBSEO 3.3.2