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. marconi tubes....can someone idntify these
  2. DeathTrap400 : : A Pretty Damn Good 300B Amp
  3. SOS: First Build, Lots of Hum
  4. KR Audio Marconi R valve amp?
  5. Distortion
  6. Tung-Sol 6098/6AR6 Substitution
  7. Dropout in RTP3 phono stage
  8. Audio Research EC-3 modification
  9. 300b all-DHT SET
  10. My first tube project !
  11. Trouble with homebuilt amp
  12. Music angel el34b problem
  13. The end of tubes?
  14. Two stages EL34 power amplifier
  15. 7199 replacement in AMPEX 6973
  16. IT coupled tube-SS hybrid amp suggestion- needs development
  17. Original Cary CAD-300se upgrades?
  18. Convert Integrated Tube Preamp to an amplifier
  19. McCurdy AM405 Schematics
  20. Behringer DEQ2496 for testing amplifiers and preamps frequency response ???
  21. I need datasheet of 8753 tube, help me!
  22. New 6L6GC Project. DC -> LTP
  23. EL84 in UL
  24. 1953 revere amp conversion
  25. Manley transformer specifications
  26. Recommended 300B SE Amplifier Designs
  27. Found a new interstage coupling method (?)
  28. Amplifier Distortion (Northern Electric)
  29. when do filament supplies need to be floated
  30. gm70 filiment transformers
  31. Replacing 6922 Preamp Tube in ARC LS7
  32. Please educate me: Tube testing, the life test, and Grid Leakage
  33. 6AR6 6098 Triode PP Load Line
  34. music reference rm5-4 schematics
  35. S5 K-12G output trans
  36. Transformer center tap question
  37. EF86 + 4*EL84PSE
  38. solid state relays for plate load switching?
  39. Dont have a power transformer?
  40. Kora Equinoxe Triode or Blue Circle BC-21.1 preamp?
  41. Power Transformer Help
  42. Analog Metric 2A3 PP Kit
  43. Good, starter OTL kit
  44. Dual SE amplifier? - (not PSE) - Take two!
  45. Mysterious SE OTL headphone amp from China?!
  46. Inv. Futterman with gain stages between PI and O/P?
  47. PSU configurations for tube amp
  48. Dynaco low Power Amp
  49. 300b power suply
  50. Very Strange Preamp Issue
  51. tube transformer suppliers in Mercosur
  52. Please Help: 6CJ3 Damper Diode Tube as Rectifier Question
  53. time delay sophia electric
  54. Twisting the leads of filter choke
  55. This SPUD's 4 U
  56. I am Looking for tubes
  57. Thuan
  58. Nanjing 6V6GT ( 6P6P)
  59. Should I keep this old stuff?
  60. 300b
  61. ganged output transformers
  62. Holco H4P Resistors, Should I use them?
  63. 6BX8 curves, help !
  64. SANSUI AU-70 or 1000A???
  65. Ground or amp hum-which?
  66. need help to fix the "hiss" on my tube preamp
  67. Best SE interstage 1:1 for min. 15mA?
  68. Dual Single Ended Amplifier? - (not PSE)
  69. valves to replace opamps in cd player
  70. Replacing capacitors on Audio Research D40 power amp.
  71. No sound and low B+?
  72. Replacing capacitors on Audio Research D40 power amp.
  73. 2 Channel Tube Amp and Sub Connection
  74. EZ125 Amp Project
  75. Yaqin MS-22b Phono Amp
  76. First post and a couple P.P. questions
  77. adding a preamp to tube power amp
  78. 6SN7 6N8S preamp suggestions
  79. 300b polarity
  80. Electrolytic capacitor vs extra triode stage
  81. WE JAN 274B Dating
  82. EICO 666 Tester Help
  83. First Headphone tube amp kit to build??
  84. NOS potted Chicago Transformer 1BC-150
  85. capacitor voltage for tube amp power supply
  86. 808 SE Design Help!
  87. Why can't I build my own ARC LS-5 or CJ PV-12?
  88. Post-mortem on a 80 year old 2A3 amp
  89. 6e5p gm70 with 6d22s?
  90. 6L6-6V6-EL34-KT88-6CA7-EL84
  91. Scheme for SE amp
  92. $16,000
  93. Hybrid power amp
  94. Diagnosis please
  95. monarch 614
  96. Separate Filament and B+ Switches
  97. Dynaco Low Power with 12AY7's
  98. PTP kits available?
  99. Which OP transformer and materials?
  100. Power of Tube Amp and Transistors Amp
  101. testing tubes
  102. current servo not voltage.
  103. Help Me, How to make Pre-amp using 12AU7 tube and Op-Amp Ic mix?
  104. 300b filament
  105. DHT SE auto bias circuit
  106. Anyone try swapping 6SN7 w/ 6F8G
  107. Eliminating Cathode Bypass Caps In SET Amplifier
  108. Nano vacuum tube
  109. Help High Line voltage
  110. Switchable Amp Output?
  111. PCB or hardwire?
  112. 27 line pre amplifier
  113. Mystery tubes on FB?
  114. amplifier discussion
  115. Mikael Abdellah KT88 SE with Cornet2
  116. 5879 to 12AX7 conversion
  117. CCDA SE output stage?
  118. Bravo V2 tube headphone amp - high pitched noise?
  119. Preamp Grounding Question
  120. SE on 300B
  121. musical paradise mp 301
  122. Newbie plan
  123. Can anybody identify this amp?
  124. Old RCA radio; can anyone ID this?
  125. Class AB2 - Kink, how and why?
  126. 6SL7, 6J5, or 6SN7 unity gain buffer amp
  127. CCDA dissimilar triode preamp
  128. NOS Neglected Hi-End Audio Tube
  129. GOSS C-core suppliers in UK/Europe
  130. Old radio -> tube amplifier
  131. Sowter 8650 in SE
  132. My Russian SET
  133. Raysonic vs. DIY tube amp?
  134. Which pins to use first?
  135. Bypass gain stage on K16LS amp
  136. Schematic help for a Pilot 505 amp please
  137. Question re: Distortion in triode gain stage
  138. Newbie needs help
  139. Marantz Model 9
  140. Is my power transformer bad?
  141. japanese 6v6 amp on youtube, anyone got the link?
  142. First attempt at tube amp.
  143. 6p3s,6N1P,6j1p
  144. 6bq5 p-p diagnosise
  145. MFA Lumi suddenly whistles (on bench)
  146. Pure tetrode and negative g2
  147. ECC85, EL84 tube amp please help.
  148. Pentode buffer.
  149. 5k:8 ohm vs. 10k:16 ohm output transformer. What is the difference?
  150. Help restoring old Maas-Rowe amp
  151. Early Sansui Valve Amp
  152. mismatched transformer impedance question.
  153. Second-hand or NOS tubes?
  154. Any suggestion for a 12AT7 / ECC81 SRPP powerstage ?
  155. Looking for High voltage double triode
  156. Will this ebay cover fit my Scott 272 integrated amp?
  157. My new find
  158. Thordarson Dual Tone Control
  159. samsung experiments with "tube sound"
  160. PP OPT design
  161. Heater voltage drops?
  162. WE448A data
  163. How come signal input capacitors are not on every amp?
  164. Any body can help to identify this pair of OPTs.
  165. Pre-amp for Tube Sound
  166. Audion tube amp capacitor questions
  167. Hello, looking for advice on a tube project...
  168. Is this speaker a good choice for Tube amps
  169. Suggestions for upgrading my first tube amp!
  170. Why does the Miniwatt N3 have 4 connections to its output transformers?
  171. Anyone know if there is an octal
  172. Cathode Follower, where is the 3d H gone?
  173. Sylvania 45C14M progress.
  174. 2 stage 2A3 SET - why does the 6n6p sim so well?
  175. Hi Everyone! Your thoughts on my Yaqin dilemma
  176. Audioromy in Shanghai ?
  177. volume Pot noise
  178. Full Music 300B solid plate sound fine ?
  179. Removing cathode-bypass capacitors, and compensation
  180. Q: UL PP Instability - Anode Grid2 Snubber
  181. The Shuguang SG-50 really support 650V in the plates ???
  182. Addinging windings to an Antek AS-... transformer
  183. Supertex dn2540 CCS Rset trimmer value
  184. help with amp ohms
  185. First Kit
  186. High-End Tube preamp with ECC88
  187. ALERT! WARNING! J. SOUND LAB 300b
  188. Gott 30u tube amp (biggs of ca)
  189. Tips needed for some testing my newly built tube amp
  190. Need help for designing C3g pentode driver for 6b4g se
  191. another circuit idea
  192. EL41 PP triode strapped
  193. Odd-ball PI circuit identification request, and headroom question
  194. b+ Delay Arrangement for Power Amp
  195. Stackin' Chokes
  196. Source of IXYS 10m45s and other CCS devices
  197. Help identifing a 12ax7a
  198. EICO HF-60, rebuild and test
  199. Hum in homebuilt amp
  200. 845 Heater Power supply problems
  201. First Amp Build, (But not complete beginner to electronics)
  202. X10 V3 SERVICE MANUAL
  203. PP kt88 amp problem.
  204. How much power do I need?
  205. 12 VAC for both AC heaters and DC B+ via voltage doubler?
  206. Adding CF to SRPP to lower output impedance?
  207. BCF build
  208. 12vac heater - dc elevated question -
  209. 6V6 VERIABLE TUBE REGULATED
  210. please help identify jennen tube amp.
  211. KEG-EAR 6L6-KT88 PP AUDIO AMP
  212. Aikido LV
  213. RH-84 voltages
  214. RIAA Tube Preamp Build (Part 1)
  215. Hybrid amplifier with ECC88(PCC88) + LM3875
  216. Triode and Input Transformer
  217. RH-84
  218. DL22N
  219. Single Tube Amp
  220. Antique radio info
  221. Alps & Panasonic pots (what's the dael? :: pics)
  222. Vintage GE Tube Amp
  223. Troubleshooting BIG hum problem. CJ CAV-50
  224. Impedance multiplier hybrid parafeed
  225. Crosley 68CR restore
  226. Question for EU diyaudio members
  227. need advises tweaking PSE 300B
  228. CounterPoint SA-12
  229. Bleeder Resistor for Choke Input Supply
  230. Large tube anode connections caps.
  231. Gyrators
  232. newbie questions about 300B tube amp
  233. EL84 SE advice for a beginner
  234. Re: Buffer with tube PCC88
  235. Transformer impedance calcs from windings
  236. Anyone came across AirTight ATM-2 schematic?
  237. Transmitter tube hybrid - Because why not?
  238. where is the output capacitor?
  239. Clarifications on role of pre VS power
  240. My poor man version of the Raven Preamplifier.
  241. GSG problem
  242. Transformer selection/brands
  243. Newbie DC heater help
  244. HF oscillation bursts at low ( < 40Hz) frequencies
  245. Why the GZ34 Rectifiers are so expensive!
  246. OPT designing?
  247. Looking for a DIY repair guy near Toledo or Ft. Wayne
  248. beginner: which DIY kit will go well with these drivers?
  249. Xindak MT-3
  250. Loudness controls

Content Relevant URLs by vBSEO 3.3.2