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. 6L6 Ultralinear cathode Follower
  2. Grid current operation
  3. 431 based screen supply
  4. Where did all the money go?
  5. Hyperx soft start any good for valve amp situation?
  6. Class AB2, Class B, and Hifi
  7. PP 6b4g bad / distorted channel diagnostics
  8. Transformer usage ??
  9. Phono Amplifier
  10. Need EL84 Brand Identification
  11. RCA Octagon dating
  12. Most Accurate Bias Testing Method
  13. ASL AQ1003DT schematic or manual?
  14. Penta brand 6L6GC info?
  15. Mod to SE 6SN7 - 6V6 amp
  16. adjust filament ECC82/83
  17. Clear out of old valves - advice needed
  18. Help ID this OPT
  19. Help? 6n23p cathode follower
  20. DC Heater Caps
  21. Load Line and Biasing for Class AB 6550 power amp
  22. Amp project help needed
  23. LTP with CCS and feedback
  24. Clarion simple 2A3 amplifier
  25. Another question about plate curves and pentode load lines
  26. 5V Indrect Heated Rectifiers?
  27. Easy CCS
  28. I just setup my mimiwat n3 with a pair of Energy cb-20 speakers
  29. First watt F2/little dot MK III
  30. Old Motorola console tube amp, fuse problem
  31. How much performance difference w/ this config?
  32. 6P8S datasheet, help !!
  33. DHT IMD
  34. How to calculate OPT transformer windings
  35. Newbie Questions
  36. Building a Harmonic Distortion Generator
  37. plate curves and max ratings questions
  38. Heater-cathode DC conduction resistance
  39. EL 84 Capacitor Equivalent
  40. How do they get away with this?
  41. well-loved Sherwood "popping" prob mouse pee
  42. Tube Newb: 12sn7 and 12sl7 interchangeable?
  43. Totem-Pole OTL with 6c33c tubes and 0.079 % THD at 20 Watt
  44. sonic frontiers sfm-75
  45. Chinese tube amp mods?
  46. PSU for JE Labs Simple 45/2A3
  47. frustrated ,Bought a 845 NOS - springs are discconnected need help
  48. Running water sound in amp
  49. Peerless 16458 output transformers
  50. Noisy high-gain preamplifier
  51. Cheap ($235) SE Tube amp kit, transformer and chassis on ebay
  52. 2A3 single plate RCA/Cunningham tube prices
  53. output transformer power rating
  54. Rectifier Foward Voltage?
  55. Help With 6Y6 amp
  56. What are 12AT7/ECC81 power drivers ?
  57. Help with these Russian GU50 tube amplifier
  58. Eico ST-70 Supermods
  59. Mullard PZ30, how's its Peak Inverse Voltage?
  60. Optical compressor project
  61. 12AU7 in cascode configuration
  62. Bad tube in old record player?
  63. check this out glas-fiber cartridge
  64. cathode caps
  65. Aikido HV PSU
  66. Distance between 6N23P and a cap?
  67. solid and strand wire in amp
  68. Phillips Music Sudio
  69. LTPI Grid stopper value affect on harmonics
  70. WTF. What's going on here.
  71. 7-pin pcb mount socket with shield?
  72. SIMPLE remote volume control with alps motorized pot
  73. Hybrid Partial Feedback SE Amplifier
  74. HV +B Connector
  75. Eico experts needed: PEC in 2050 driver stage bad
  76. Best sounding linestage/buffer topology?
  77. Using ECC88
  78. what tubes should I upgrade a mini watt with I currently have the stock 6p14 and 6bq5
  79. EL34 cathode bias PA
  80. Tube Amp Art
  81. Quick OT Question
  82. Power Transformer
  83. ampex 354? some questions
  84. Good power Filter Capacitors
  85. Fisher 101d blow fuse
  86. Valco Model 1200 help
  87. Jolida 502A lost output...?
  88. Codename "Tapyrus", my ongoing DIY headphone amp
  89. RIAA preamp with DHTs
  90. Dynaco Mark VI feedback values
  91. Eagle PCB
  92. Ode to Tube Rollers
  93. switching tubes: good or bad idea?
  94. COnn Organ Amp DI266 Info 12v6GT tubes
  95. Please help me figure out why my plate voltage is too high here
  96. Yaqin MC10L Question for the Guru's
  97. PP PSU: How much ripple is too much ripple?
  98. Bypass caps in choke PS
  99. Grounded Grid TRANSCENDENT line stage
  100. Battery Powered Tube Amp
  101. 5Z4PJ 6N2J
  102. Almost there! opinions are welcomed(6C33SET)
  103. Speaker impedance and amp matching?
  104. r core or toroidal output trafo for dynaco st70
  105. Heathkit Returns
  106. How to get started
  107. WANTED: schematic for Eico 2050 Classic Series
  108. winding an output transformer
  109. 12AX7 vacuum tube pre-amp?
  110. motor 'defeat' switch for echoplex/etc
  111. Audionote kit L4 and L6
  112. class a audio amplifier 5w with ic ne5532
  113. Fate of my Heathkit W7-M amplifiers
  114. Trying to get my B&K 500 up and running.
  115. Tubelab simple SE ideas
  116. Newcomb E-10B Amplifer
  117. Telefunken RV218 power triode
  118. Crowhurst High Power vs Low Power Amplifiers
  119. Duncan amps PSU designer II help
  120. damper diodes
  121. EL12N in JCM800 clone
  122. Amp design exercise, mentorship needed...
  123. Need help with series filament 25l6GT amp
  124. Dynakit Mark IV Oscillation
  125. Telefunken C3M data
  126. Can a tube guru help with nu>lambda conversions?
  127. plate dissipation vs brand
  128. Solid-state replacements for PAS2/3 rectifiers?
  129. first integrated amp
  130. Problems with Unbalanced to Balanced line matching transformer from EDCOR
  131. st70A mod.kit
  132. Grampian 600u
  133. Suggest amp to drive mangnapan SMGa/MMG
  134. Valve DI box
  135. Yaqin Tube Amplifier
  136. Jensen JT-11P-1 on tube amp input
  137. Amperex PQ 6922 code decifering?
  138. 12ax7 driving a DHT out, why not?
  139. unknown Rogers Pre Power
  140. Mic pre question
  141. power tube power scaler
  142. Tube Rectifier with transformer without Center tap
  143. Can I use this stuff (does it have any value?)
  144. Full regulated power supply for 12au7(preamp)
  145. 6C33 OTL Circlotron
  146. Ammeter connection for Tubelab SE
  147. Unknown output transformer
  148. Building a tube pre/amp copy (6V6)
  149. 6922 pin i.d.
  150. KT88 Push Pull Amp using transistor driver stage
  151. 45 DHT HT Supply oscillating - help!
  152. exceeding plate voltage of the output tube
  153. Fisher 101D
  154. Tubes and Eagle3D
  155. Looking for old amp info
  156. Restoring an old tube amp
  157. Noob Tube Preamp Finished Kit Transformer HOT!
  158. the tv underrated tubes
  159. Headphone Amp
  160. What is needed to drive 86db speakers and sound *good*?
  161. ef86 - plate voltage
  162. Output signal distortion
  163. Minimum Acceptable Gm
  164. Anyone have experience with the 6SD7GT tube ?
  165. Identifying an ultralinear OPT
  166. A good sounding EL34 PP sch please
  167. THE CHAMP CBA-20807 1000 Watt Valve amplifier
  168. ST-35 First Build
  169. Identifying EL34 tube?
  170. Solid state relais in stean of standby swtich
  171. $75 tube amp kit on eBay???
  172. Power supply RC (ohm's law) question -NEWBIE ALERT
  173. variable power control
  174. reccommend a voltage doubler for bias?
  175. Point to Point build tips
  176. I need some fairly specific capacitors types, like polyester or silva mica.
  177. ecf82 pentode instead of ef86
  178. K-12G vs. K-502
  179. eq in a tiny Directly Heated Cathode amp
  180. Anyone ever try 6C33C SE with Aikido drive?
  181. Help with 1:2 line level input Tx's
  182. 112a preamp need comment please
  183. Excellent (Modified) Williamson Treatise
  184. Vintage Hoffman Stereo Amp Problem - fump, fump, fump
  185. Chicago BO-14 100w amp
  186. ef861 - guitar preamp
  187. volume pot question, help.
  188. Simple B+ delay circuit for tube power amp?
  189. Dynacord Super 61, 62 spares request
  190. My small tube does it work?
  191. Approaching the best primary impedance on low or high side?
  192. CT Trafo and floating psu for circlotron?
  193. Unknown tube, need help to identify!
  194. 6L6 guidance needed
  195. Output Power Question
  196. Can the 7AK7 computer tube work as audio output tube ?
  197. Burned in Power Tubes?
  198. Driver Match for K-12G TubeAmp
  199. KT90 to KT88 with autobias
  200. SRPP DC working condition for Rk1=2Rk2
  201. NOS Russian Reflektor 6P6S (6V6) tubes were a pleasant surprise
  202. the 'sound' of a CF
  203. Hickok I-177B tester help!
  204. Illinois Capacitor or Cornell_Dubilier
  205. Found iron recycling - what possible uses?
  206. Class AB PP - is it any good ?
  207. Stereo to mono by paralleling outputs?
  208. BOX in the making
  209. How about paralleling output tubes
  210. Are they basically Borbely hybrid circuitry?
  211. Service Life at Low Plate Current
  212. Sophia Electric SE Transformers for 813 "Super Schade"
  213. 10W suitcase amp
  214. PP OT made of 2 transformers
  215. If I change B+ do I have to change the circuit?
  216. PhonoDude
  217. Lafayette Phono/Reverb /Center channel amp
  218. Seller recommendation needed.
  219. Jeffrey's Super Circlotron (hybrid)
  220. Request for obscure heater specs
  221. Jolida JD1501RC Service Manual / Schematic
  222. 80W amp with a pair of EL34
  223. Epiphone Valve Junior to HiFi Conversion
  224. Serious Distortion on my DIY Toccata Phono Preamp
  225. Hickok 539b switch settings for 6SL7
  226. help me designing parallel SE guitar amp with 12at7 as power tube
  227. Voltage Change9115v/230v) of Audio Research amplifiers
  228. HF oscillation with no load, but only on one channel.
  229. Tube innards
  230. Peavey valveking 112 lead (distortion) channel doesn't work
  231. Looking for a tube amp
  232. What happens If I use too weak output transformer?
  233. Chinese amp: 2A3 6SN7 6SJ7 5Z5P push pull
  234. 6C33C based Version for Welter's Single Ended Amp (enhanced Forward Transconductance)
  235. Single Ended EL84 B+
  236. Looking for some PSU advice ...
  237. Electronic transformer filament supply
  238. Which Salas HV shunt regulator should I choose?
  239. Traced an old valve with no specs - thoughts please
  240. Resistor socket?
  241. Dynaco PAS 3X PSU mod
  242. Best sounding 500v. electrolytics
  243. CCS's for CCD line amp?
  244. tube life
  245. For tube amps w/ high output Z - Parallel R cross spkr?
  246. High and low impedance output preamps
  247. LTspice and simulating tube circuits?
  248. Cheap & Well Made Chinese SE EL34 Amp
  249. Heathkit transformer replacement...
  250. Integrated amp will not turn on

Content Relevant URLs by vBSEO 3.3.2