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. 6L6 Triode AB Push/Pull Pout
  2. Schade and CFB exactly equivalent
  3. need some advice on updating this one
  4. Abdellah KT88 cathode follower addition?
  5. Where to buy vacuum tubes in Hong Kong city?
  6. Help needed on restoring a Bogen AP-200 amp
  7. homemade case for a homemade amplifier
  8. Two driver options for 300B push pull
  9. Heath Williamson type W-3M
  10. 6n3c 12ax7 amplifier
  11. HELP needed to design/build DRD 6C33C SET
  12. k12g left channel is out
  13. Yaqin MC-100B... anyone modded for tape loop?
  14. Simple Se build, Which tube?
  15. Re-thinking Hybrid!
  16. History of RIAA standards
  17. GU48/833A medium power SET
  18. Bass control causing hum + no bass from left channel
  19. bad PX4? dark blue glow
  20. Soft Start/bucking transformer For Marantz 9 Monoblocks
  21. Direct coupling with CCS
  22. 407A/B Preamp
  23. Bad 845 tube? (video link)
  24. Dynaco PAS 4
  25. OTL Amplifier in 1990 Glass Audio Magazine
  26. Volume drop when playing and hiss noise at turning off from one channel
  27. OPT in or near loudspeaker?
  28. Soft start for tube amplifier
  29. Transformer Sizing, etc
  30. 4P1L filament oscillation
  31. Toroidal power transformers in a tube amp
  32. No left channel output
  33. Conrad Johnson PV-10 squeal!
  34. Need expert help on EL34 SE tube amplifier.
  35. Coupling Caps
  36. 12pin/compactron tube socket
  37. Aikido audio problem w/ mains voltage fluctuations
  38. Radford STA-12
  39. New popping sound from my amp
  40. Line stage experiments with 6sn7
  41. simple SE headphone amp
  42. Aesthetix Metis Linestage
  43. Problem with Antique Sounds Pre Amp
  44. Output coupling capacitor question
  45. Screen Voltage present without B+
  46. jolida jd3000b preamp
  47. Need help on output transformer wiring alternatives
  48. Hi-End Push-Pull universal driver
  49. schematic for pentode 42 SE
  50. 6L6 / EL34 / EL84 / 6V6 frequency response curves?
  51. cheap and dirty supply
  52. EL84 SET red plating problem
  53. Using Aikido Topology to make Phono Preamp and Power Supply
  54. 5687 & OB2 as an excellent HT regulator
  55. 6S45P-E questions
  56. Extreme hybrid, a 100W with the vacuum tube sound
  57. Test Settings for a EL33/6AG6/6M6 on Eico 628 tester
  58. Chinook (Baby Amp II)
  59. Einstein Amplifier Input and Driver Section
  60. Tube System for Symphony/Jazz
  61. What is the purpose of C3 & C4?
  62. Yes, I'm the one who bought it...
  63. Capacitor Values
  64. Parks Audio / Triode ST35 kit?
  65. noob question.
  66. First stereo amp "Newbie" questions
  67. Newbie tries to design an amp
  68. Help - analysis on an output KT88 PP amp
  69. 12T10 triode connection - similar "real" triode to compare to?
  70. Recommendations for tube preamp (vinyl playback)
  71. Magnavox 8802 refurb boutique or standard parts.
  72. Allen model 75 organ amplifiers modifications
  73. Capacitance of rectifier tubes/valves near V=0??
  74. Volume/selector switch
  75. Auto Bias w/ LM317
  76. Volume drops and then comes back - anyone recognizes the sympthom?
  77. Cathode Follower and Volume Pot
  78. Dyna Mark III monoblocks. Driver boards and some questions on modding.
  79. switching a 5y3 for a 5y4?
  80. K-12M in Ultra Linear Mode Volume Issue
  81. SA 260 Pilot tube amplifier
  82. Standard Earmax Mod
  83. 470V using Bridge vs. 230V using Doubler
  84. Troublesome hybrid shengya a10..
  85. Heater Dropping Resistors
  86. Useing Mosfet in cathode leg of phase splitter
  87. Cheap (<100€) Digital Tube Tester from ebay; experience/build/mod thread
  88. Cleaning old tube sockets with common household products
  89. Automatic Bias Kit
  90. Triode mode Pentode G2 resistor?
  91. Rectifier.
  92. Tube gainstage for newbie
  93. Source follower irf720 or DN2540
  94. Toroidal OPT
  95. Tesla E83CC - Have done research & still havingt trouble spotting fakes from real
  96. Can Capacitor
  97. SE Power amp SG2 voltage
  98. Bias supply
  99. 7377 tube socket
  100. Power Transformer Impedance Matching
  101. zenith console amplifier (a stereo mono amplifier :) )
  102. Trutone model Teeco 610-D
  103. electromagnetic hum problem
  104. Heathkit A7 Volume.
  105. Ribbon Tube Amp
  106. Brimar ECC83 with red bottom
  107. Dynaco ST 35 Cheap Transformers source in EU
  108. Transformer input for P-P
  109. Help Identifying 12au7a From Hammond Organ
  110. K502 Bleeder and LED
  111. Cathode follower attenuates signal
  112. Anyone has a curve tracer to trace Western Electric 436A 448A 418A in triode mode ?
  113. Breadboards and tube voltages
  114. Dynaco 35 Power Supply
  115. Magic eye with tube em80-schematic or circuit
  116. Using 220v amp in country with 230v
  117. Magic eye with EM81 tube - made in China
  118. Improvement Suggestion Wanted: 6AS7 Hybrid PP Amp
  119. Tube amp instability in LTSpice (Claus Byrith 4-30)
  120. Current mfg triode's
  121. K12g upgrades
  122. Help Needed Identifying a Custom Tube Amp
  123. Capacitor Voltage rating
  124. 6dj8 6922 driver question
  125. APPJ PA0901A Repair
  126. Output tube G1 resistors question
  127. Building Mullard PP ECL86 stereo
  128. 6SN7 Parallel Preamp Anyone?
  129. Advice on Finishing my K502 Build
  130. Another SSE build question
  131. Ferrite SE Outut XFMR for HF Tube Amp
  132. Question about grounding a 2-prong tube amp
  133. Grommes Mono Block
  134. EL84 triode mode @ 425V?
  135. Hybrid amp - Grounding Suggestions?
  136. Advises asked for, exquisite taste wanted!!
  137. need a good 2a3 socket... need advice
  138. Cathode feedback comments?
  139. Does different Rectifier Tubes change the tone????
  140. Another boring day
  141. el84 Tube amp
  142. Haddon PL151 Quad II input transformer
  143. Noob question
  144. Futterman H3 Set Up
  145. Any tube guys here use a MiniDSP
  146. Should Output Transformers be replaced
  147. Quad II questions
  148. MY OTL Tim Mellow-ESL 63 PROJECT
  149. Zobel for REDD47 w/ HA-100 Inpu
  150. Pentode P-P - cathode biasing for A and AB
  151. Why a Headphone Amp?
  152. How little B+ ripple do I really need?
  153. Need good EF86 based RIAA preamp.
  154. Which Tube amplifier should I build first?
  155. Sound Practices Magazines, Complete Set 98% perfect
  156. 6L6GC in Push Pull Class A - how much power out?
  157. ECC83 DC Heater Supply - without CT
  158. PPP EL84 monoblocs: i knew then what i know now...
  159. zener, voltage devider or 02A
  160. DHT heater current draw - how fast?
  161. Rca sa752
  162. Audio Research and Octal Pre's
  163. Scott 299D
  164. Unison Smart 845 big problem
  165. Need help with driver idea for 845 amp - have a few ideas
  166. Input impedance on cathode follower stage?
  167. Picked up a box of tubes for $5.. What tubes are usable?
  168. Need help on potentiometer.
  169. A Raven preamp (mk2) finished
  170. need help searching for ground
  171. Pre-amp transformer output
  172. Boyuu EL34 A9 Tube Amp
  173. Hybrid 15W, want feedback - work in-progress
  174. SP12 and PH12 Pre and Phono from Vacuum Tube Audio
  175. Which tube amp for Telefunken-tlx3 loudspeakers?
  176. Burned up a tube - want to be sure I know why
  177. Output Transformer Windings in parallel
  178. New tube tech from Korg
  179. Got some PX4 valves from an old radiogram
  180. At the start: Triodedick´s Monobill Classic KT88 Monos
  181. Choose your harmonic distribution: which sound better?
  182. Recommended HT current limit for old stock power transformers
  183. preamp circuit
  184. Low impedance headphone amp
  185. "Earthing" in DIY tube preamps
  186. Tube amp help
  187. How to draw a dynamic load line for cathode bypass triode like 12AX7
  188. Common Grid design
  189. 6AW8-A
  190. Push pull amp without GNFB
  191. No filament voltage
  192. Selecting Component Values for Simple Current-Feedback Amplifier
  193. 4 Blown Soft Recovery Diodes...Are TV Damper Tubes more Reliable?
  194. Just got a nice EL84 based receiver
  195. Is there any good current Production 6550s?
  196. Building the Damn Good 300B
  197. convert trashed kolster k20 into tube amp?
  198. Junkbox Hero
  199. KT150 curves by Sofia
  200. My new EL84 Amp
  201. 1955 Bogen J330 Mic Input Problem
  202. parallel el84 output pp. shared coupling caps?
  203. Will a Western Electric 422A substitute for a 5Y3?
  204. Question for a moderator
  205. bottlehead quickie schematic
  206. RCA 6146B sub for 807 or 6L6?
  207. Leak monoblock hum
  208. Eico 2036
  209. Heathkit iT-12 signal tracer to much gain??
  210. Valve Monoblocks - am I being realistic?
  211. Aikido Headphone Amp and PS1 Power supply
  212. Transforming a triode into a pentode?
  213. New to amps - Long-tail pair and heater hum
  214. Experimenting with the Aikido 12Vac kit
  215. Strategies for Implementing Negative Feedback in a 12ax7 Line Amplifier
  216. Output Transformer Impedances
  217. PP 6l6 class ab...advice needed
  218. 300B
  219. 12AX7 EL34B TUBE AMPLIFIER
  220. UK info please
  221. PAS 2/3 RIAA Modification
  222. My Homage to the Earmax Headphone Amp
  223. Aikio Line Stage
  224. Lite Audio LS 58 schematic
  225. Lite Audio LS 58 schematic
  226. Love those triodes
  227. Differential Pair with negative feedback
  228. Quad II Eighty Schematic?
  229. Adventures with Aikido
  230. Beard BB 100 and Beard A35
  231. Noob is about to press the BIN button and buy a Chinese tube amp kit. Save me/ help?
  232. Ebay Kit EL34 6n9P 5Z3P Build Thread.
  233. Sakuma 46 / 801A Circuit
  234. Tube Manufacturing at Expo-Pul
  235. Philips EL6410, how does it sound?
  236. tube amp power help
  237. Video from the Czech Tesla Tube factory
  238. Alans' rantings
  239. 3 x 3 Tube amp 30 watts
  240. Maximum allowed capacitance after gas rectifiers
  241. PSUD2 rectifiers list
  242. EL34 amplifier with these transformers
  243. Aikido Octal Dual Mono for Dummies... Help me.
  244. Monster Trans or Really Good Doorstop?
  245. The correct way to wire DC filaments 3B7 DHT
  246. Haller Circuit Problems
  247. Need recommendation for VERY basic amp project
  248. Recommendation on tube buffer?
  249. For Your Consideration: Unity Coupled Plitron Amp, No Bootstrapped Driver, No GNF
  250. Tango Transformers - any unique push pull circuits?

Content Relevant URLs by vBSEO 3.3.2