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. Bought a set of Greenlee conduit punches for my latest project - WOW!
  2. "Universal" octal amplifier?
  3. MU follower - distortion
  4. lighting transformers 12V
  5. Chinese 6N3 preamp questions
  6. Why are Chinese preamp knockoffs so popular?
  7. 4K7 OPT suitable for 6550/KT88?
  8. Transformer question - 110 v and 25 v from 1 secondary?
  9. About loadline again, how to choose load and current
  10. Parallel Output Transformers
  11. 6SN7 / 6V6 power amp : very odd behavour
  12. HV mA Spec on Large RCA Power Xfmr?
  13. Is the Aikido too 'bright'?
  14. Has anyone put the Glassware phono & line amps in same box?
  15. High impedance balanced output: how long the cable?
  16. Data Sheets
  17. Can I use a LM317 bias on lower cathode of SRPP?
  18. AU-34 Output transformer replacement question
  19. The new KT120 from tungsol
  20. em83 questions
  21. Push-pull PCL84 schematic and a question
  22. confused on power transformer ratings
  23. C3g:GM70:GM70 schematic advice
  24. Can someone explain Load Lines?
  25. Humming from WCF but not SRPP
  26. Gas regulator tubes
  27. My B&K 707 sensitivity seems wonky
  28. Lowrey LC1 B schematic wanted
  29. Complete tube amp novice got a few questions!!
  30. jacked up the bias...WOW!
  31. Looking for PP 7027a shematic
  32. So, if it's not DIY Gene, then what?
  33. What driver tube for 200Vrms?
  34. Tube socket purchase
  35. Something I found interesting a while ago!
  36. Eico HF-22 Circuit
  37. SEDHT amp - decisions decisions
  38. Confused with designing
  39. Digitally controlled analog attenuator
  40. Purchased my 1st valve amp and can only get one channel working, please help!
  41. Another silly tube yesting question
  42. potentially very stupid questions....
  43. Tube rectifier: AZ1, AZ31, AZ50 vs 5u4
  44. Tube Square-Law, what and how to set up?
  45. Need help finding schematic. Conn 720
  46. OPT for parafeed SE
  47. Anyone else tried an opamp as a driver?
  48. e180f/6688 pentode operting points
  49. power supply reassignment problem
  50. Mains power transformer on S5 K-12 kit hums?
  51. Oriole OPT
  52. 26DQ5's vs 26HU5's vs 6KN6's and transformers
  53. SRPP power using power tranny as OPT?
  54. Need guidance with heathkit SA-2 refurbish/mods
  55. B+ discharge times!
  56. 26HU5's....and a confession
  57. Bell Sound Systems Pacemaker Model 2220
  58. Any thoughts on this transformer on eBay?
  59. Need some help figuring out a Wurlitzer 6240.
  60. Bypassing cathode resistor on pp power tube
  61. Is it safe to use a 8BQ5 in place of a 6BQ5 in a guitar amp?
  62. TRIODE Voltage amp + Power OP output follower
  63. Cats and tube-a-holics
  64. Replace Tube Rectifier With Weber CC?
  65. 717a 2 stage SE amplifier
  66. Thoughts on Oatley K282 Valve Preamp?
  67. SS rectifier for SimpleSE and others...
  68. Need match Pr KT-88
  69. EL34 PP - again !!!
  70. S5 K-12 Kit sounds excellent with iPod, but relatively low volume with turntable?
  71. Finished K-12 Kit with cedar / brass chassis (pics)
  72. Groove Tube Dual 75 schematics
  73. Tubes HOT!
  74. Meng volume pot problem
  75. Use P-P OPT for SE?
  76. Safety ?
  77. Film caps always better than lytics?
  78. Valve Preamp for voice / guitar purpose
  79. 851 set?
  80. dual cathode follower problem
  81. Question about connecting grounds
  82. Is it okay for capacitors to be close to the main power transformer in S5 K-12 Kit?
  83. Fisher 500C Schematic
  84. looking for PP 6l6 schematic
  85. Muiscal Paradise MP-301 6V6 amp.
  86. First Build - PS Voltage Question?
  87. Need help about an hybrid amp circuit
  88. Radio to guitaramp conversion hum problem
  89. Pioneer SX-348 - Service manual?
  90. Tube PS for mic preamp Help
  91. Add rectifier tube to yaqin mc10l? What size is best?
  92. global negative feedback schematic
  93. Signal transformer question
  94. What speaker system for tube amplifier
  95. 39/44 Tube
  96. tube-aholics anonymous ?
  97. 12AX7 heaters from 9VAC transformer
  98. Cant stop Aikido Humming
  99. Suggestions for rotary switches
  100. Question about potential transformer placement in K-12 Kit
  101. Extra pins on replacement potentiometer for K-12 tube kit?
  102. Instrument tube / valve preamp
  103. SRPP - issues understanding how to increase current
  104. ARC Power source+Marantz 7C(PCB edition)
  105. Repair and adjustment tips
  106. trimax output transformer TA2444
  107. anyone recognize this valve?
  108. Microphone Preamp design
  109. 6CM5 hi-fi amplifier
  110. Building an amp try #2
  111. Can the 6S33S/6C33C be mounted horizontally?
  112. A heptode question
  113. Looking for a 807 amp with 4 pairs of 807's
  114. pp output transformer miniblok2
  115. John Swenson's BDT preamp - finally!!
  116. Voice of Music console 816
  117. Steve Bench 1 tube reg in all glass
  118. Conn Caprice 427 needs new 12AU7 tubes—advice?
  119. Position of Iron in Can of HK Citation II Output Transformers
  120. Bottle size,does it matter in matched quads?
  121. Heater Pots?
  122. Current calculation from datasheet
  123. Any one ever seen this amp?
  124. Guiguang 300B for 300Beast.....
  125. FLEA PPP, all ecc99
  126. Well, it is time to start thinking about winter projects. GM70
  127. aghhh is my tube okay?
  128. Grid Bias provided by transformer secondary winding, what is this stuff about?
  129. Zener regulated supplies
  130. OPT fore drive ribbon speaker directly; why not ?
  131. van Dorn's Octode design - recommendations for a 10W/ch version
  132. Outrageous Speaker/Amplifier Idea
  133. Anyone ever made the EL84 P-P circuit referenced on the Tubecad Journal site?
  134. Scratchy volume pot on TAD DIY deluxe reverb
  135. Cathode Follower ideas please.....
  136. Anyone used the NTE1866 VU LED driver?
  137. Any potential problems when using a combo potentiometer / power switch on a K-12 kit?
  138. Help needed understanding component values.
  139. Separate passive pre and monoblocks?
  140. My new diy site
  141. Valves and musical instruments
  142. My DC Darling
  143. Question - add LED power indicator to Aikido pre
  144. Colorful amps
  145. Aikido Cathode Follower
  146. Converting a dirty channel to clean?
  147. A few questions about transformer placement in an S5 K-12 tube amplifer
  148. Bogen AP30 and new member
  149. Adding Clean channel to AX84 P1-Ex
  150. Echocord Super 62 Feedback at Low Levels?
  151. Direct Coupled 76/5687 linestage
  152. Be kind to your 5AR4 and input capacitor
  153. New Self-Powered ROHS compliant electronic device invented!
  154. Making my first hifi tube amp.
  155. Variation on Rodīs bias servo
  156. "No Light District" P-P amplifier
  157. What kind of tubes do i have?
  158. Understanding Scope Trace Square Wave
  159. Single tube SE with EML-20B
  160. LED bias cathodyne
  161. Diagnosing hum???
  162. Posted tube microphone preamp design
  163. Finally put the Aikido in a proper chassis
  164. Tube Preamp / Headphone amp question...
  165. Phono Preamp
  166. Initial 'DQ5' testing
  167. Free Tube Amplifier Schematic Diagrams
  168. Testing with DMM
  169. The Impressive Vetruvio GM70 SET amp.
  170. Fender Twin Reverb channel 2 has no output
  171. 6sn7 subminature??
  172. One channel louder than other
  173. How to use RCP 802A tube tester test B9A tubes?
  174. phono amp question - adding input tx
  175. Ebay "clones" PCB
  176. Phase splitter and balance input
  177. At Last....First Build Complete...6V6/6SL7
  178. Amplifier input
  179. The Tube Maze
  180. Variable Harmonizer
  181. Vetruvio Audio; new competition for the Chinese?
  182. Transmitting tube-driven transmitting tube SET amp?
  183. Circlotron questions
  184. Home Grown tube amps
  185. LT108 Oscillation sounds like tube rush/white noise
  186. Cool looking tubes anyone...
  187. st70 standby switch/cathode stripping SS rect
  188. BoM for an RH84 mono build?
  189. Signal hum ideas please.
  190. E88CC turbo
  191. SRPP vs. plate loaded, musicality and details
  192. 300B/EL156 Amp
  193. Just new one .all new layout.
  194. Am I correct????
  195. Need help identifying this amp...
  196. The Maggie factor
  197. Help wiring up anLED Bar
  198. E810F/7788 Pinout name/number?
  199. Need some help with a mercury 1200 tube checker
  200. Adjust cathode bias pot - both channels move together. Why?
  201. Building a 45 SET
  202. Stereo Pententometer Questions
  203. Looking for oscilloscope recommendations.
  204. dm160 magic eye help
  205. Tube stage for acoustic guitar?
  206. Zener heater regulator
  207. Dead Time - Correcting for it
  208. ARC Power source+ 12AX7&12AU7 Pre-amplifier
  209. PTC Thermistor for auto fixed bias
  210. How do I calculate output power?
  211. Microcontrollers in tube amps
  212. Dynaco PAT4/Aikido tube preamp
  213. RCA red base 5691 / 5692
  214. Updating my amps....and "hello" :-)
  215. my first attempt
  216. Finished my first PP amp, 6SJ7-6SN7-6v6
  217. Triode PP OP stage combining Blumlein Garter and CCS bias - anyone tried this?
  218. 6U8 Revisited
  219. DePalma redux
  220. Could this be a perfectly linear triode?
  221. Grounding elevated ccs series filament supply
  222. What to do with E182CC's
  223. Angela EL34 opinions please
  224. Chinise 6N1 tube replacement
  225. Ridiculous Hallucinations
  226. Transformer Ratings
  227. dB Meter with tube circuit
  228. Suggestions for pp or se monos
  229. Low filament current tubes
  230. Tube Clearout
  231. First tube amp, it needs maintenance
  232. Need EF86 phono preamplifier shematic
  233. cannot locate documentation on SCA 9190 receiver
  234. Ecc88 pin 9 connection??
  235. VTL Compact100 Monoblock Blows Fuse
  236. 300b driver revisited.
  237. SYclotron schematic
  238. Hum problem
  239. Suppo el34
  240. my new tube experience
  241. LL1682PP Lundahl
  242. BP Ultrapath
  243. Tube shops/sellers in Kiev , Ukraine ?
  244. Headphones with tubes...
  245. A Triad xfmr for a voltage doubler PSU
  246. Ra-100
  247. Series Resistors on Outputs of Transformer?
  248. what's up !? new choke=subsonic pumping
  249. How to get the best out of the 6C33C-B?
  250. TO-220 PCB spacing for HV MOSFETs

Content Relevant URLs by vBSEO 3.3.2