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. twisted/isolated/shielded wires?
  2. Feedback question
  3. What tubes for a tube amp?
  4. SE-OPTs
  5. Phase splitting using directly heated tubes?
  6. Change EL84 from Triode to Ultra linear
  7. DC hybrid folded-cascode for Schade
  8. New UK Manufacturer of Valves
  9. Can any here explain the JHS designation?
  10. Too good to be true???
  11. Judging a tube's condition
  12. EF86 tube preamp
  13. Any tips for snap in type caps to replace solder lug cans?
  14. 6EM7 SET Headamp
  15. Are these ALL really EL34 subs?
  16. parallel tubes
  17. Changing the frequency of AC from mains to lower, out of audible range???
  18. Se 6550
  19. New Suppo Audio EL34 amp
  20. 60Watt+ valve design wanted
  21. Interesting tube on e-bay for trans atlantic cable
  22. Need help solving problem on new 2A3 build
  23. Tube and Passive Preamps-Auto Transformers for Attenuators/Volume Control - Overview
  24. Peavey Classic 30 - Squeal
  25. Where bay M6 lamination (M4,M2) metal for transformer
  26. dynamic pentode screen draw
  27. Tube Sockets
  28. Circuit Ideas for the 815 (martian tube)
  29. Old Tektronix unit, usefull?
  30. my transformer output has a center tap: what do I do with this?
  31. 6AV5GA amp?
  32. Phase splitter idea
  33. Lowering noise in small signal pentodes?
  34. Articles from the past
  35. tube upgrade for vintage orange 120
  36. Help for LTP/CCS plus cathode follower
  37. Conrad Johnson PV-5, my next project, some simple questions
  38. ALTEC 1566a (DiY...if)
  39. Friday Night Fun with a ST-70
  40. Aikido All-In-One Octal Heater Troubles
  41. Guitar tube amp OT Calculation/Winding HELP!
  42. transimpedance amplifier
  43. Jaehong Lee OTL
  44. What tube bases to support for a new tube curve tracer
  45. 6GE5 in driver service for class B P-P
  46. Replace Electrolytics?
  47. Can OT's couple?
  48. tube solid state hybrid guitar amp, looking for schematic
  49. before i drill Simple SE Chassis Seperation of input and output
  50. gates m-3638 preamp
  51. Oversized caps (PS and coupling) in RH84: Problem?
  52. What makes a great concertina triode?
  53. Luxman SQ5A
  54. Spice model with grid current 12ax7
  55. converting a magnavox pp 6v6 in triode mode
  56. 3-leaded russian PIO caps
  57. 6V6 filaments in series
  58. my loud valve preamp
  59. Tranformer for Chinese pre amp (6N11) ?
  60. 1 watt desk speaker
  61. PE06/40 replacement
  62. Salvaged console tube reciever
  63. EF86 swap for 6BQ5 reverb?
  64. Yaqin CD3 Impressions and Internals
  65. svetlana 6D22S heater issues/question
  66. Unity-Gain EL84 Push-Pull Power Buffer
  67. Tube rectifier input capacitance
  68. Borbely hybrid Tube-MOSFET opamp
  69. Help! Tube Rolling
  70. Articles on Global Feedback
  71. Symetrical out low Zout
  72. Any Rimlock PCB sockets out there?
  73. 12SN7 Round Plate Tung Sol--is there such a thing?
  74. Vintage 2a3 tube amp
  75. Balance in CCS Long Tailed Pairs
  76. Audioromy 813 Mains Transformer
  77. Hello all, Im new from Spain, sorry for my english, and problems with my music angel
  78. use 120V x 2 for Aikido octal transformer?
  79. P-P O/P Trafo with only 2 tubes insead of 4?
  80. Eico HF-87 refurb
  81. Which SS CCS for the plate load on a 6N1P?
  82. Um, Can I do this?
  83. Eico power supply trouble (hlp plz)
  84. TV live regulator to tube preamp
  85. How to Spec Headphone output transformers
  86. Can I enlarge the mounting hole on Mosfet?
  87. Meng Yue 6P1
  88. Finding triode curves
  89. Critique my schematic 12ay7 linestage
  90. Suppresor Grid used for Feedback?
  91. Power Cascode
  92. Audio grade components
  93. Line Voltage with Yaqin MC-100B amp
  94. heater warmup and b+ delay
  95. BAL to UNBAL DAC buffer
  96. Counterpoint SA-7 - need a pic of the inside
  97. Are Chinese 6N2 the same as Russian 6N2P?
  98. New project; Musical Machine
  99. 4D32 SE amp, a few more questions
  100. Static shock with simple se
  101. Old electrolytic caps ok? MOSCODE 600
  102. Transformer Flux Band Tips and Tricks?
  103. What tube config will get this sound?
  104. On cleaning transformers
  105. My first project ELEKIT TU-870R
  106. DC7 MkII :New Schade 6080 amp.
  107. current driver tube amplifier
  108. A DC coupled headphones amp
  109. Ebay trader zhangsheng
  110. decware kits worth it?
  111. Simple test for transformer frequency response?
  112. Modular guitar tube amp power supply - interface concerns
  113. Vacuum Tube Voltmeters
  114. Power Trans. Load Test
  115. Replacing Cap Across Filter Cap
  116. Regulate HV preamp with floating LM317?
  117. Rogers cadet 3
  118. AC15 Heritage Project w/ Sound Clips
  119. Output impedance tap considerations.....
  120. Amp switch safety load
  121. MF X-10D replica problem
  122. Nice triode
  123. Low gain preamplifier
  124. Improving a Maple Tree Audio PS 2 power supply
  125. Baby Huey-ish phono?
  126. New? Local Feedback Method
  127. PSUD Help Needed: What value do I enter for current?
  128. Question on WE310
  129. How do you calculate choke size in a power supply?
  130. tubecad and tubecad se
  131. 300B amp Power Supply
  132. Adjustable internal Resonance?
  133. B+ Voltage sag for AB1 PP
  134. Maplin
  135. Preamp with an integrated amp
  136. First "boot" in 15 years
  137. Inherited these tubes. Anything interesting?
  138. What application for this tube?
  139. tantalum cap
  140. do I need to upgrade my heater supply to add another tube?
  141. Anyone have curves for a 2C52?
  142. tube-amplifier-shaped-usb-speaker
  143. pre-amp tubes: matching and care
  144. How to self taught about building tube amplifiers
  145. Any pretty good/bad chinese amps?
  146. Couple idiot questions....
  147. Looking for the triode mode of Z759
  148. Couple idiot questions....
  149. push pull 45
  150. Video of hum noise when I switch on the reverb of my Twin Amp
  151. 6sj7 spice model
  152. Help finding parallel 45 SE schematic
  153. filling in the low end, 6bq5 12ax7 circuitry
  154. Dynaco Mark VI
  155. Looking for Sonic Frontiers SFS80 Schematic
  156. CCS or V.REG for OP anode
  157. Yarland FV 34CIII
  158. Looking for OPT steel covers
  159. Damper diodes, center tapped heater, B+
  160. Dynaco ST-35 Newbie cathodyne question
  161. Anyone have valve/tube libraries for express PCB or PCB123?
  162. Looking for the Ultimate Aikido.
  163. CCS loaded DHT cathode follower?
  164. Phono stage with LT1028 MC input
  165. New valve int flash over why ?
  166. Sweep tube suggestions
  167. Amp project output problem
  168. 12AX7,6BQ5 PP Amp Search.
  169. Dynaco MkIII preamp/linestage recommendations?
  170. Can someone please check my PCB layout for this preamp?
  171. looking for easy, low cost guitar amp project
  172. UK EBAY - 100W Marshall / Fender Clone Transformer Set
  173. Bottlehead Filament Choke FC-1 for Push-Pull?
  174. Home James! But first, which transformer?
  175. NAD preamp = 6BQ5 Frankenschteen
  176. Wintersweet highvividity driver circuit
  177. Looking for TT11(CV1501) triode mode curve
  178. Amp switching with 4093/4066. How to add indicator LEDs?
  179. Yaqin MC-10L Blown Fuse
  180. 2a3 amp, progress picture
  181. How do I implement an AZ1 rec tube???
  182. Profit margin on used tube amps
  183. 300B sockets (different question)
  184. How can I modify this grommes little jewel amp for guitar.
  185. tri-amping question (s)
  186. Unity coupled power stage
  187. Acquired A Bunch Of Tubes
  188. Understanding load lines
  189. what would happen if.........?
  190. Testing valves/tubes
  191. 300b socket
  192. Vertical vs. Horizontal does it matter?
  193. Layout thoughts hmm....
  194. ID request, is this a pre?
  195. Anyone got any info on the Tippatone 500 watt amps?
  196. SMPS for Filaments?
  197. Using 6n6pi Push and Pull
  198. Optimum Tube Temperature
  199. Chassis
  200. 5670
  201. will this spice works in real word?
  202. An amplifier for Burning Man
  203. 12AT7,12AU7 Ultra linear cascode
  204. El Cheapo Grande
  205. EL84 Unused pins safe to connect?
  206. 6BQ5/EL84 tube buffer questions
  207. How much power do I need?
  208. Tube buffer/preamp. Where to place voltage divider?
  209. Schematic wanted for VTL Preamp "Maximal"
  210. modified GEC 88-50
  211. Zenith 7B31 Help
  212. Do swingers always buzz when they swing?
  213. 6at6 tube? What can i use it for?
  214. Sovtek 6550WA?
  215. how to make a tube gyrator eq?
  216. Transformer needed or "solid state guy needs help from tube guys"
  217. Differential input, SET output
  218. FFT of PSUD2 output?
  219. Differential push-pull design question
  220. Any EF184 users?
  221. 30P1S - How to use them?
  222. st-70 as good as it gets?
  223. Subbing in a TVC - input load Q
  224. Chinese tubes, new ones or relabeled?
  225. 6AV6 => 12AX7 question
  226. crate vintage club 50 2x12 keeps blowing preamp tubes
  227. 845 & 300b tubes
  228. Sourcing sockets and plugs for power supply umbilicals
  229. Sub mini history question ...
  230. 6DX8 Amp for Headphones and Low Volume Needs
  231. Surplus Voltage Solution
  232. Tube rolling in the Triode Electronics 6au6/12au7 driver board
  233. RCA mystery tube help
  234. Breadboarding/Prototyping - How to and Tips/Tricks
  235. Sub-Miniature Tubes - Low Voltage
  236. True direct-coupled PP amp
  237. "Radical" twist on an all DHT phonostage
  238. input tubes for 300b
  239. JE Labs simple 2a3 filiment tranny, 1 or 2?
  240. ebay Valve Preamps boards for 18 !
  241. Smoothing caps
  242. Spud issues - a little help, please
  243. GLY513 in PS of Simple SE / PP and OTL
  244. Has anyone here built something with this super triode?
  245. What is this part in old radio?
  246. Has anyone done anything with a 5977 sub-mini
  247. Driving EQ from kathode resistor
  248. Understanding CCS vs CVS
  249. Can you believe this!
  250. help with my humming valve amp

Content Relevant URLs by vBSEO 3.3.2