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

  1. To bypass or not to bypass...
  2. DIY Curve Tracer
  3. 300B filament winding center tapped?
  4. help me decide,headphone amp - parafeed or normal tx ?
  5. 7060 vs 6AN8A
  6. Psu
  7. Blackheart amp moding question
  8. EDCOR Output transformer for 300B
  9. 80 or RGN1064 Scenario
  10. TUBENEWB - Quad KT88 Monoblocks
  11. CCS in Differential phase splitter?
  12. Need schematic for Smart 2x150vt
  13. Antek OPT
  14. 6DQ6 for audio power amp?
  15. Anyone identify this Mullard?
  16. My Mullard 5-20: some photos and a question
  17. Tube can work in low volt~~fix your knowledge
  18. A problem with a tube receiver
  19. Auto Transformer - safety advice
  20. Where I could find tube in San Jose
  21. 6Н30П spice model for MicroCap ?
  22. Transformer input and resonance
  23. GE6111 Preamplifier
  24. Where to buy audio tubes in Europe
  25. Play iPod into 1955 Record Player's Tube Amplifier
  26. To Schade it , or not..
  27. questions on input stage
  28. Planar/Lighthouse triodes for Audio?
  29. The Best coupling cap..THEL??
  30. 211 SET 40W output design and mfg.
  31. Volume Control with Loudness and no Taps
  32. Use for 4k PP (non UL) OPT's?
  33. Heathkit Oscilloscope O-12
  34. Filament Autobias
  35. Shelby NC Ham Fest
  36. 2A3 Spud
  37. Resistor as a load
  38. How to balance pushp pull DHT finals
  39. 240v to 220v
  40. Hammond 272 FX plate voltage
  41. Drawing Load Line for Parallel Output Tube
  42. question about swapping el34 for kt77 in my tube amp
  43. 6 volt recifier tubes
  44. PSU Capacitor Selection
  45. Output transformer sizing...again...
  46. Power supply cabling
  47. Voltage doubler using PSUII?
  48. Rectifier Tubes in SE Amps
  49. 6v6 SEP
  50. 1967 Pioneer SX-34, 11W, WORTH FIXING???
  51. Jumper Wire Gauge and Material for Phono Preamp?
  52. Tube libraries for AutoTRAX wanted.
  53. DIY Layout Creator for Chassis Designs
  54. ecc99 - 6C19n PP, (6S19P)
  55. Dr Z Carmen Ghia build from a Hammond Reverb amp!!
  56. Strange HF distortion
  57. have a pair of 5k:8 OPTs lying around.. suggest me something to build?
  58. Marshall 1959 (Super Tremolo) repair help
  59. Early history of High Fidelity amplifiers
  60. Which pentode for input?
  61. 6n6p or 6P14P-ev for driver
  62. Old tranny - confused with windings
  63. Dynaco A-430 Vintage Output Transformers
  64. Output tube for 800 Ohm speaker?
  65. Today was the anual Tree Street Yard Sale event
  66. Florida ? what did I get ?
  67. 26HU5's vs 26DQ5's
  68. VoltCraft AT-400?
  69. Sonic differences: 45, 2A3, 300B, 845, 211
  70. Need help wiring a pot for cathode adjustment
  71. Sound of the 6SN7?
  72. A mystery device
  73. Plate curves... Ic2 & Ib?
  74. How to choke load for big voltage swings?
  75. 6550 SE design, please comment.
  76. "Impedance" of the output transformer
  77. Triode-wired small signal pentode question
  78. Calculating output impedance
  79. 6JM6 Infomation for Pete Millett's DCPP Amp
  80. Tube labeld ETBB
  81. Heaters wiring help!
  82. What do you guys think of this IR volume control?
  83. Can you send me the Aikido 5687 user manual
  84. Cathode Follower output cap
  85. EL84 rebuild suggestions
  86. voltage divider in WE91 driver
  87. Power Tx Myth?
  88. voltage multiplier based on SS trafo - LONG
  89. What tube for QUIET phono pre??
  90. A&R 8ohm 4008 output transformer
  91. How does DRD Ultrapath Work?
  92. Russian 6H2p-E??
  93. Started work on my stereo 7027a PSE amp
  94. Mono Tube Comp for analog kick drum
  95. Line stage preamplifier
  96. Trying to select the Aikido components
  97. X-PRE musical fidelity preamp. need help modifying
  98. 6C33C & Borbely Question
  99. 12BH7A in common cathode
  100. Sneak Preview: 9 Band Active All Tube EQ
  101. Bought a set of Greenlee conduit punches for my latest project - WOW!
  102. "Universal" octal amplifier?
  103. MU follower - distortion
  104. lighting transformers 12V
  105. Chinese 6N3 preamp questions
  106. Why are Chinese preamp knockoffs so popular?
  107. 4K7 OPT suitable for 6550/KT88?
  108. Transformer question - 110 v and 25 v from 1 secondary?
  109. About loadline again, how to choose load and current
  110. Parallel Output Transformers
  111. 6SN7 / 6V6 power amp : very odd behavour
  112. HV mA Spec on Large RCA Power Xfmr?
  113. Is the Aikido too 'bright'?
  114. Has anyone put the Glassware phono & line amps in same box?
  115. High impedance balanced output: how long the cable?
  116. Data Sheets
  117. Can I use a LM317 bias on lower cathode of SRPP?
  118. AU-34 Output transformer replacement question
  119. The new KT120 from tungsol
  120. em83 questions
  121. Push-pull PCL84 schematic and a question
  122. confused on power transformer ratings
  123. C3g:GM70:GM70 schematic advice
  124. Can someone explain Load Lines?
  125. Humming from WCF but not SRPP
  126. Gas regulator tubes
  127. My B&K 707 sensitivity seems wonky
  128. Lowrey LC1 B schematic wanted
  129. Complete tube amp novice got a few questions!!
  130. jacked up the bias...WOW!
  131. Looking for PP 7027a shematic
  132. So, if it's not DIY Gene, then what?
  133. What driver tube for 200Vrms?
  134. Tube socket purchase
  135. Something I found interesting a while ago!
  136. Eico HF-22 Circuit
  137. SEDHT amp - decisions decisions
  138. Confused with designing
  139. Digitally controlled analog attenuator
  140. Purchased my 1st valve amp and can only get one channel working, please help!
  141. Another silly tube yesting question
  142. potentially very stupid questions....
  143. Tube rectifier: AZ1, AZ31, AZ50 vs 5u4
  144. Tube Square-Law, what and how to set up?
  145. Need help finding schematic. Conn 720
  146. OPT for parafeed SE
  147. Anyone else tried an opamp as a driver?
  148. e180f/6688 pentode operting points
  149. power supply reassignment problem
  150. Mains power transformer on S5 K-12 kit hums?
  151. Oriole OPT
  152. 26DQ5's vs 26HU5's vs 6KN6's and transformers
  153. SRPP power using power tranny as OPT?
  154. Need guidance with heathkit SA-2 refurbish/mods
  155. B+ discharge times!
  156. 26HU5's....and a confession
  157. Bell Sound Systems Pacemaker Model 2220
  158. Any thoughts on this transformer on eBay?
  159. Need some help figuring out a Wurlitzer 6240.
  160. Bypassing cathode resistor on pp power tube
  161. Is it safe to use a 8BQ5 in place of a 6BQ5 in a guitar amp?
  162. TRIODE Voltage amp + Power OP output follower
  163. Cats and tube-a-holics
  164. Replace Tube Rectifier With Weber CC?
  165. 717a 2 stage SE amplifier
  166. Thoughts on Oatley K282 Valve Preamp?
  167. SS rectifier for SimpleSE and others...
  168. Need match Pr KT-88
  169. EL34 PP - again !!!
  170. S5 K-12 Kit sounds excellent with iPod, but relatively low volume with turntable?
  171. Finished K-12 Kit with cedar / brass chassis (pics)
  172. Groove Tube Dual 75 schematics
  173. Tubes HOT!
  174. Meng volume pot problem
  175. Use P-P OPT for SE?
  176. Safety ?
  177. Film caps always better than lytics?
  178. Valve Preamp for voice / guitar purpose
  179. 851 set?
  180. dual cathode follower problem
  181. Question about connecting grounds
  182. Is it okay for capacitors to be close to the main power transformer in S5 K-12 Kit?
  183. Fisher 500C Schematic
  184. looking for PP 6l6 schematic
  185. Muiscal Paradise MP-301 6V6 amp.
  186. First Build - PS Voltage Question?
  187. Need help about an hybrid amp circuit
  188. Radio to guitaramp conversion hum problem
  189. Pioneer SX-348 - Service manual?
  190. Tube PS for mic preamp Help
  191. Add rectifier tube to yaqin mc10l? What size is best?
  192. global negative feedback schematic
  193. Signal transformer question
  194. What speaker system for tube amplifier
  195. 39/44 Tube
  196. tube-aholics anonymous ?
  197. 12AX7 heaters from 9VAC transformer
  198. Cant stop Aikido Humming
  199. Suggestions for rotary switches
  200. Question about potential transformer placement in K-12 Kit
  201. Extra pins on replacement potentiometer for K-12 tube kit?
  202. Instrument tube / valve preamp
  203. SRPP - issues understanding how to increase current
  204. ARC Power source+Marantz 7C(PCB edition)
  205. Repair and adjustment tips
  206. trimax output transformer TA2444
  207. anyone recognize this valve?
  208. Microphone Preamp design
  209. 6CM5 hi-fi amplifier
  210. Building an amp try #2
  211. Can the 6S33S/6C33C be mounted horizontally?
  212. A heptode question
  213. Looking for a 807 amp with 4 pairs of 807's
  214. pp output transformer miniblok2
  215. John Swenson's BDT preamp - finally!!
  216. Voice of Music console 816
  217. Steve Bench 1 tube reg in all glass
  218. Conn Caprice 427 needs new 12AU7 tubes—advice?
  219. Position of Iron in Can of HK Citation II Output Transformers
  220. Bottle size,does it matter in matched quads?
  221. Heater Pots?
  222. Current calculation from datasheet
  223. Any one ever seen this amp?
  224. Guiguang 300B for 300Beast.....
  225. FLEA PPP, all ecc99
  226. Well, it is time to start thinking about winter projects. GM70
  227. aghhh is my tube okay?
  228. Grid Bias provided by transformer secondary winding, what is this stuff about?
  229. Zener regulated supplies
  230. OPT fore drive ribbon speaker directly; why not ?
  231. van Dorn's Octode design - recommendations for a 10W/ch version
  232. Outrageous Speaker/Amplifier Idea
  233. Anyone ever made the EL84 P-P circuit referenced on the Tubecad Journal site?
  234. Scratchy volume pot on TAD DIY deluxe reverb
  235. Cathode Follower ideas please.....
  236. Anyone used the NTE1866 VU LED driver?
  237. Any potential problems when using a combo potentiometer / power switch on a K-12 kit?
  238. Help needed understanding component values.
  239. Separate passive pre and monoblocks?
  240. My new diy site
  241. Valves and musical instruments
  242. My DC Darling
  243. Question - add LED power indicator to Aikido pre
  244. Colorful amps
  245. Aikido Cathode Follower
  246. Converting a dirty channel to clean?
  247. A few questions about transformer placement in an S5 K-12 tube amplifer
  248. Bogen AP30 and new member
  249. Adding Clean channel to AX84 P1-Ex
  250. Echocord Super 62 Feedback at Low Levels?

Content Relevant URLs by vBSEO 3.3.2