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. coupling caps for RCA rebuild
  2. Recommended coax
  3. Adding solid state bass to valves
  4. Incompatibility between Aikido Pre and Tubelab SimpleSE
  5. What power amp design would suit Esoteric MG-20?
  6. PL36 (triode) SE
  7. Any thoughts on this?
  8. BAT VK 55 paralleled
  9. Looking for a good phono preamp schematic.
  10. Nice diy from Poland
  11. Unballancer humming in one channel
  12. 6S19P tubes instead of 7233 tubes.?
  13. Looking for good stereo amp <$350 - help
  14. Question on EL84 SE triode with CCS at cathode
  15. Convert choke loaded 12b4 to CCS and retain od3's
  16. What can I make with these?
  17. 12AT7 LTP Calling Eli Duttman
  18. Book Help, Please?
  19. Amplifier class A EL34
  20. ps audio hybrid tube buffer
  21. FS: Copper chassis, OPT and Power Xfmrs
  22. Negative Feedback Amplifier with embedded Positive Feedback Booster
  23. Looking for a single ended amp.
  24. EF39 as 300B driver...
  25. How is Electro Harmonix 6922 sonicly compared to NOS?
  26. Tube amp driving a Subwoofer
  27. Leak Stereo 20 Power Supply Choke?
  28. help me read circuit: broski 300b shunt reg
  29. CCS current regulators for OP valves
  30. 1930's push pull field coil amplifier
  31. Loudness and power and volts
  32. Opinions; big mess or have potential?
  33. Star grounding
  34. High NFB OTL headphone amp
  35. Any technical advantages of almost floating grounds?
  36. Twisted power cables
  37. Output transformer
  38. 12AU7 Tube Line Pre-amp on Ebay
  39. Would you run these at say 1200vdc?
  40. MOSFET equivalent
  41. 6BY5 GA full wave rectifier replacement
  42. ID those parts - trafo
  43. Sweeps in class A
  44. Preamp valve rectified power supply
  45. Grommes Precision S-35 - Worth playing with?
  46. 6922 or E88CC in the Rode NTK Mic
  47. What the hell caused this?
  48. 6SN7 Aikido White Follower - Spice simulation
  49. Need to build a moving coil stage
  50. You guys and gals recognize any of this equipment?
  51. Help with first amp design, SET no feedback hp amp
  52. LTSPICE problems with 10Y model
  53. 5876 tube
  54. P2P wiring and cable types
  55. Claus Byrith 4-30: missing valve in the PCB?
  56. KR T1610 PP amp building
  57. Pls Help me Identify these Tubes!
  58. measuring output transformer primary impedance
  59. Unusual output transformer Triad
  60. Input transformer differences
  61. Faint buzz through power stage (845)
  62. Pros and Cons of 3rd Stage in SE (6AV5/2A3 drive requirements)
  63. Star grounding - wooden box
  64. R601P Tube Radio
  65. analog metric el34 se amp
  66. EL34 PP amplifier suggestions
  67. 6AU6 Triode Mode
  68. Another GM70
  69. newbie amp question.
  70. Push-Pull Plate Choke from Edcor?
  71. Finalizing 300B Amps==Please Comment
  72. Help!!!
  73. Controlling gain in VA stage
  74. 833 Push Pull Design
  75. restoring mullard valve paint
  76. Mentmore TVA1
  77. DIY in Korea?
  78. Case suggestions for Pye Black Box?
  79. help trouble shooting a problem
  80. Liteaudio 1s37 Phono preamp
  81. All DHT tube amp dream
  82. Suggestion for valve amp kit
  83. Alps black beauty inductive?
  84. Why are directly heated rectifiers still popular?
  85. Headphone amp with pre out
  86. wish to buy 10's or other tungsten DHT's
  87. Audio Innovations Series 300 II -red plate
  88. 811 heater power supply...
  89. Bijou resistors specs
  90. Bijou schematics question (PINs)
  91. Looking for a proficient tube tech in New England.
  92. hybrid amplifier using EF86
  93. Looking in San Diego....
  94. Ground of tube headphone amp
  95. Input Transformer Question
  96. Low imp tube headphone diy amp
  97. Cathode Follower as DAC Output Stage?
  98. Monoblock Gu-50 help.
  99. Aikido CF question
  100. Tube Power Amp Kit Recommendations
  101. EL34,KT66,6L6GC,KT77:who works better with high impedance OT load in SE Triode Mode?
  102. ECC40 Voltage Question
  103. Question re DC coupling vs RC coupling (AC)
  104. Measuring ripple in filament supply (coleman reg)
  105. What about use largest possible capacitor as interstage decoupling ( 1 or 2uf)
  106. replace 6N3 tube preamp with mullard E555L
  107. Preamp to Poweramp tube proximity/spacing?
  108. List of Tube Noise Measurements - please nominate lowest noise tubes
  109. Just for interest
  110. Time to build the big one.
  111. Opinion? Would the input/driver from a HK-5 be good to replace original Mk3 ft. end??
  112. Has anyone built this kit?
  113. 22 AWG PTFE Wire jacket
  114. mu-follower with output transformer?
  115. ECC81 double triode tubes flashed brightly when switched on.
  116. pre amp with tone controll
  117. Making own hifi tube amp from scratch!!
  118. Pentode CCS as a load for long tailed pair?
  119. E88CC & 6N23P plate voltage range?
  120. First pre phono design [newbie]
  121. Struggling with LTspice - How to use .inc to get a tube to appear
  122. Eico St 40
  123. ECC88 Input/driverstage for F4 amp
  124. Tube headphone amp
  125. Rike Audio S-cap
  126. Acquired free brand new Jolida 302a
  127. Triode vs Transistor
  128. Help with restoration of Audio Research equipment
  129. Grommes 103gt tuner
  130. Frank’s 6SN7 pre & regulated supply
  131. Sleeping giant
  132. hum by mounting powertransformer and tubes on same chassis
  133. Rectifier tube overheating
  134. "World's Best Technical Master Craftsmen"
  135. OPT for 2A3
  136. getting rid of pre amp in a tube amp
  137. A question on OPT and no loads.
  138. Auto-Bias vs Manual bias vs EFB
  139. Russian receiving tubes and foreign equivalents
  140. B+ delay timer module
  141. Testing DIY triodes
  142. Adding a dummy load to prevent amp from being damaged by having no load?
  143. 30 watt class A chopper controlled bias with 6 EL84
  144. THD
  145. Input resistor (What are purposes?)
  146. Posted new 300B push-pull amp design
  147. Help me source a pair of OPT for Knight KG-240 tube amp
  148. Help Pick Transformers for EICO HF-87
  149. PreAmp
  150. Original price of the Conrad Johnson PV-5
  151. balance pots in Williamson driver stage
  152. Another Question on Tektronix Transformers
  153. Philco K1629 Upgrade Options
  154. My return to tubes, via headphones - what circuit would you recommend?
  155. High Quality EL84 UL SE Amplifier
  156. regulated supply to CCS plate load
  157. Twin Audio Sinfonia Preamp
  158. ecll800 schematic confusion
  159. 6L6 recommendations
  160. tube 100th
  161. Luxman OY15-5k OPT?
  162. Has anyone had experience with Russian 5C8S and 5C9S?
  163. New Here looking for info on rare SVIKO russian made 6KG6 monoblocks
  164. EL 84 pp amp - simple regulated circuit sought
  165. Any tube amp to drive B&W 802D?
  166. New to valve amplifiers
  167. SE 6GW8 output transformer with 5 wires.
  168. Mr.Curwen's single ended adventures
  169. Tube magic eye with em84-sensitivity?!
  170. Tube test
  171. Brimar 6V6 USSR
  172. Construction Guides
  173. World Design KT88 Kit
  174. Opinions appreciated: Lafayette LA 224b vs. McIntosh 225
  175. Clone X10D problems distortion / saturation ... help!
  176. 12DW7 or 12AU7+12AX7 if stereo?
  177. First preamp and gain control
  178. Tube life..
  179. Berman 76 preamplifier, I need some advice please
  180. How to light GM70 tube as decorative?
  181. Old Tube amp missing tubes. HELP
  182. Going to Berlin, looking for electronics diy shops
  183. 6SJ7 Vs 6Ж8 - Can the russian tube be considered an equivalent tube ?
  184. 6L6G Tung-Sol reissue: sweet sound and delicious night sight, but...
  185. Help with Eico ST70
  186. Class-D and Tube buffer/preamp off same 12V SLA?
  187. Hard time to find High Voltage medium power linear BJT
  188. Gu50 or 1624 PP amp first trials
  189. cathode follower driver A2
  190. High Pass Filter for OTL headphone Amp
  191. Bewitch 6550 Balance Issue
  192. ground hum issues in an old peak st-100
  193. Need an APPJ PA0901A Mini Amp Output Transformer.
  194. VTL Tiny Triode Schematics?
  195. A question of dynamics: Amplifier design?
  196. Rechargeable battery for cathode bias: open discussion
  197. High quality tube socket for 4P1L tube ?
  198. VTL Schematic needed
  199. Diode rating for filament voltage doubler
  200. SE vs PP for SET amps
  201. Use "mu output" from depletion mode MOSFET load?
  202. GM70 SE mov rectifiers
  203. First Preamp build
  204. Fisher KX-200 driving a pair of ESL from the plates
  205. Disadvantages of unbalanced tube
  206. The anatomy of a vacuum toob
  207. Valve Amplification Company CLA1 mkii help
  208. leak stereo 20 channel imbalance
  209. Mains powered 20W submin bridge amp
  210. SS rectification ST70
  211. K-12g ultra fast diode mod UF4007
  212. WE46c..
  213. 10 Pin B10A socket
  214. RIAA network adjustment
  215. audio research sp16
  216. Visiting Japan
  217. "up-rating" power filter chokes
  218. Differential pair gain/ where to apply feedback
  219. EL84 ECC83 SE Amp schematic
  220. high B+ voltage drop
  221. Volume control chip
  222. Signal Ground
  223. New to 6DJ8 tube
  224. EL91 Max ratings ? help
  225. I need a distraction!
  226. 300B amp project
  227. "bevois valley" in triode
  228. Strange problem wit a 3 tube preamplifier
  229. JJ Tesla vs. Electro Harmonix for Hi-Fi EL84 SE?
  230. This Tube CB make
  231. tubecad el84 powersupply ps4 question
  232. ART Tube MP studio V3 problems
  233. Calculating Cathode Bias w/o tube curves?
  234. Cathode follower PA Driver in a cathode biased amp
  235. I have my first Valve Amp, help me not blow it up!
  236. Unison Research SR-1 schematic/service manual
  237. Mega Tube DIY project
  238. very very simple single ended 300b valve amp schematic?
  239. 300b with single stage driver, c3m or?
  240. Cap upgrade for SVP RIAA stage
  241. Quick Q about JC's upside down front end.
  242. Bogen beasts again
  243. I thought this was a joke...but..
  244. Black pollution
  245. Difference between 6N1P and 6N23P?
  246. low voltage AC umbilical advice
  247. RCA MI-4288J Amplifier - Any info?
  248. 3.5k OPT for 45 type tube?
  249. DIY/OOTB upgrade? PP/SE?
  250. Sansui AU70

Content Relevant URLs by vBSEO 3.3.2