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

  1. Two stages EL34 power amplifier
  2. 7199 replacement in AMPEX 6973
  3. IT coupled tube-SS hybrid amp suggestion- needs development
  4. Original Cary CAD-300se upgrades?
  5. Convert Integrated Tube Preamp to an amplifier
  6. McCurdy AM405 Schematics
  7. Looking for Neumann N149 power supply schematic
  8. B&K model 747 tube tester for EL34
  9. Behringer DEQ2496 for testing amplifiers and preamps frequency response ???
  10. I need datasheet of 8753 tube, help me!
  11. New 6L6GC Project. DC -> LTP
  12. EL84 in UL
  13. 1953 revere amp conversion
  14. Manley transformer specifications
  15. Recommended 300B SE Amplifier Designs
  16. Found a new interstage coupling method (?)
  17. Amplifier Distortion (Northern Electric)
  18. when do filament supplies need to be floated
  19. gm70 filiment transformers
  20. Replacing 6922 Preamp Tube in ARC LS7
  21. Please educate me: Tube testing, the life test, and Grid Leakage
  22. 6AR6 6098 Triode PP Load Line
  23. music reference rm5-4 schematics
  24. S5 K-12G output trans
  25. Transformer center tap question
  26. EF86 + 4*EL84PSE
  27. solid state relays for plate load switching?
  28. Dont have a power transformer?
  29. Kora Equinoxe Triode or Blue Circle BC-21.1 preamp?
  30. Pre-Amp For my Tubelab Simple P-P
  31. Power Transformer Help
  32. Analog Metric 2A3 PP Kit
  33. Good, starter OTL kit
  34. Dual SE amplifier? - (not PSE) - Take two!
  35. Mysterious SE OTL headphone amp from China?!
  36. Inv. Futterman with gain stages between PI and O/P?
  37. PSU configurations for tube amp
  38. HP Model 712b Regulated Power supply
  39. Dynaco low Power Amp
  40. 300b power suply
  41. Very Strange Preamp Issue
  42. WTB: I am looking for a Freed 1400V or Chicago 1200V/1400V Potted Power Transformer
  43. tube transformer suppliers in Mercosur
  44. Please Help: 6CJ3 Damper Diode Tube as Rectifier Question
  45. time delay sophia electric
  46. Twisting the leads of filter choke
  47. This SPUD's 4 U
  48. I am Looking for tubes
  49. Thuan
  50. Nanjing 6V6GT ( 6P6P)
  51. Should I keep this old stuff?
  52. 300b
  53. ganged output transformers
  54. Holco H4P Resistors, Should I use them?
  55. 6BX8 curves, help !
  56. SANSUI AU-70 or 1000A???
  57. General Electric YTW-1 Tube Checker
  58. Ground or amp hum-which?
  59. need help to fix the "hiss" on my tube preamp
  60. Best SE interstage 1:1 for min. 15mA?
  61. Dual Single Ended Amplifier? - (not PSE)
  62. RIP Forum Member "Ivey"
  63. Balanced Buffer Needed with a Balanced Volume Control?
  64. valves to replace opamps in cd player
  65. Replacing capacitors on Audio Research D40 power amp.
  66. No sound and low B+?
  67. Replacing capacitors on Audio Research D40 power amp.
  68. 2 Channel Tube Amp and Sub Connection
  69. EZ125 Amp Project
  70. Yaqin MS-22b Phono Amp
  71. First post and a couple P.P. questions
  72. adding a preamp to tube power amp
  73. 6SN7 6N8S preamp suggestions
  74. 300b polarity
  75. Electrolytic capacitor vs extra triode stage
  76. WE JAN 274B Dating
  77. EICO 666 Tester Help
  78. Hickock 550X signal voltage
  79. First Headphone tube amp kit to build??
  80. Anyone owns a Dynavox VR-307 Amplifier ?
  81. NOS potted Chicago Transformer 1BC-150
  82. capacitor voltage for tube amp power supply
  83. 808 SE Design Help!
  84. Why can't I build my own ARC LS-5 or CJ PV-12?
  85. Post-mortem on a 80 year old 2A3 amp
  86. 6e5p gm70 with 6d22s?
  87. 6L6-6V6-EL34-KT88-6CA7-EL84
  88. Scheme for SE amp
  89. $16,000
  90. Hybrid power amp
  91. Diagnosis please
  92. On now! Jamerson's Ampeg
  93. BK 707 Tube Tester Mods
  94. monarch 614
  95. Separate Filament and B+ Switches
  96. Dynaco Low Power with 12AY7's
  97. PTP kits available?
  98. Which OP transformer and materials?
  99. Power of Tube Amp and Transistors Amp
  100. testing tubes
  101. current servo not voltage.
  102. Help Me, How to make Pre-amp using 12AU7 tube and Op-Amp Ic mix?
  103. 300b filament
  104. DHT SE auto bias circuit
  105. Anyone try swapping 6SN7 w/ 6F8G
  106. Eliminating Cathode Bypass Caps In SET Amplifier
  107. Nano vacuum tube
  108. Help High Line voltage
  109. Switchable Amp Output?
  110. PCB or hardwire?
  111. 27 line pre amplifier
  112. Mystery tubes on FB?
  113. amplifier discussion
  114. Mikael Abdellah KT88 SE with Cornet2
  115. 5879 to 12AX7 conversion
  116. CCDA SE output stage?
  117. Bravo V2 tube headphone amp - high pitched noise?
  118. Preamp Grounding Question
  119. SE on 300B
  120. musical paradise mp 301
  121. Newbie plan
  122. Capacitor Voltage rating Question
  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 HIGH-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. tubelab SE component mounting
  166. Pre-amp for Tube Sound
  167. Audion tube amp capacitor questions
  168. Capacitor Substitution
  169. Hello, looking for advice on a tube project...
  170. Testing my Tube Tester
  171. Is this speaker a good choice for Tube amps
  172. Suggestions for upgrading my first tube amp!
  173. Why does the Miniwatt N3 have 4 connections to its output transformers?
  174. Anyone know if there is an octal
  175. Cathode Follower, where is the 3d H gone?
  176. Sylvania 45C14M progress.
  177. Collins R-390 Audio Deck
  178. 2 stage 2A3 SET - why does the 6n6p sim so well?
  179. Hi Everyone! Your thoughts on my Yaqin dilemma
  180. Audioromy in Shanghai ?
  181. volume Pot noise
  182. Full Music 300B solid plate sound fine ?
  183. Removing cathode-bypass capacitors, and compensation
  184. Q: UL PP Instability - Anode Grid2 Snubber
  185. The Shuguang SG-50 really support 650V in the plates ???
  186. Addinging windings to an Antek AS-... transformer
  187. Supertex dn2540 CCS Rset trimmer value
  188. help with amp ohms
  189. First Kit
  190. High-End Tube preamp with ECC88
  191. ALERT! WARNING! J. SOUND LAB 300b
  192. Gott 30u tube amp (biggs of ca)
  193. Tips needed for some testing my newly built tube amp
  194. Need help for designing C3g pentode driver for 6b4g se
  195. another circuit idea
  196. EL41 PP triode strapped
  197. Odd-ball PI circuit identification request, and headroom question
  198. b+ Delay Arrangement for Power Amp
  199. Stackin' Chokes
  200. Source of IXYS 10m45s and other CCS devices
  201. Help identifing a 12ax7a
  202. EICO HF-60, rebuild and test
  203. Hum in homebuilt amp
  204. 845 Heater Power supply problems
  205. Tubelab SE choke
  206. First Amp Build, (But not complete beginner to electronics)
  207. X10 V3 SERVICE MANUAL
  208. PP kt88 amp problem.
  209. How much power do I need?
  210. Hickok TV-7 D/U calibration
  211. 12 VAC for both AC heaters and DC B+ via voltage doubler?
  212. Adding CF to SRPP to lower output impedance?
  213. BCF build
  214. 12vac heater - dc elevated question -
  215. 6V6 VERIABLE TUBE REGULATED
  216. please help identify jennen tube amp.
  217. Settings for ECC808 tube on 539c tester
  218. KEG-EAR 6L6-KT88 PP AUDIO AMP
  219. Aikido LV
  220. RH-84 voltages
  221. RIAA Tube Preamp Build (Part 1)
  222. Hybrid amplifier with ECC88(PCC88) + LM3875
  223. Triode and Input Transformer
  224. RH-84
  225. DL22N
  226. Single Tube Amp
  227. Antique radio info
  228. Alps & Panasonic pots (what's the dael? :: pics)
  229. Vintage GE Tube Amp
  230. Troubleshooting BIG hum problem. CJ CAV-50
  231. Impedance multiplier hybrid parafeed
  232. peavey heritage 212
  233. Crosley 68CR restore
  234. Question for EU diyaudio members
  235. need advises tweaking PSE 300B
  236. CounterPoint SA-12
  237. Bleeder Resistor for Choke Input Supply
  238. Large tube anode connections caps.
  239. Gyrators
  240. newbie questions about 300B tube amp
  241. EL84 SE advice for a beginner
  242. Re: Buffer with tube PCC88
  243. Transformer impedance calcs from windings
  244. Anyone came across AirTight ATM-2 schematic?
  245. Transmitter tube hybrid - Because why not?
  246. where is the output capacitor?
  247. Clarifications on role of pre VS power
  248. My poor man version of the Raven Preamplifier.
  249. GSG problem
  250. Transformer selection/brands

Content Relevant URLs by vBSEO 3.3.2