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

  1. Supro Golden Holiday Schematic Needed
  2. Does this transformer work?
  3. Max grid resistance for GM70?
  4. Stacked power supply HELP!
  5. Parallel pwr supply chokes for add'l current?
  6. Need help to verify Amperex 7119's genuineness
  7. Need help/advice on a problem with console amplifier
  8. Getting started with my VERY FIRST project
  9. PCL Vintage Amp VA1956 - transformer issue
  10. Help to Identify
  11. 300B based preamp....looking for schematic
  12. USB Oscilloscope
  13. RH84SE, use as headphone amp ?
  14. The New Yaqin/Music Angel/Meng & Others Discussion Thread
  15. Power triode bias by tube rectifier
  16. Two questions on IR volume control
  17. 25 watt output tube
  18. DC heating my 300b
  19. RNT-900 regulator
  20. KT61 Equivalent - Ping Waveborne
  21. EICO 666 meter needle moves too fast/pegs too hard...help?
  22. Eico 666 meter movement speed help
  23. Running a tube without heaters
  24. SE-BAL-SE Switching
  25. What makes is stereo?
  26. Triple Checking Calcs: metering bias with mA meter
  27. EL84 & 12AX7 Amp possibilities
  28. Weird issue with tube driver.
  29. 6E5P
  30. 6B4G / 6S4S Biasing Question
  31. Quick tube wear question
  32. Looking for a tube amp
  33. Internal placing of components
  34. Preamplifiers v power amplifiers
  35. LP2 dht driver
  36. hammond 1650
  37. reverb
  38. Load For PSU
  39. *PING* Tubechimp
  40. Revamping of a Michaelson & Austin TVA-1
  41. 6V6 Behavior W/Fixed Bias (SE Amp)
  42. Low noise, low microphony, low hum valves
  43. 6L6 / 12AX7 push-pull
  44. bowei amp for audionote ax-2 speakers?
  45. Yet another Priboi thread...
  46. Help Old Radio Philips
  47. Distortion discussion from mosqueto Hybrid thread
  48. Sovtek 6N1P Microphonics
  49. ECC86 / 6GM8 Radio Receiver Help
  50. Los Angeles
  51. Op point for 6au6/6gu5 in P-G feedback 6550
  52. Tube Pre-Amp Schematic Needed
  53. find a YAQIN 5881a amplifier
  54. 11N90C in the SBCCS circuit
  55. Help replacing a PSU choke - How to choose choke
  56. does this look like a joke to you?
  57. Electronic Choke for Valve Amplifiers
  58. Sockets for a WE429A
  59. To bypass or not to bypass...
  60. DIY Curve Tracer
  61. 300B filament winding center tapped?
  62. help me decide,headphone amp - parafeed or normal tx ?
  63. 7060 vs 6AN8A
  64. Psu
  65. Blackheart amp moding question
  66. EDCOR Output transformer for 300B
  67. 80 or RGN1064 Scenario
  68. TUBENEWB - Quad KT88 Monoblocks
  69. CCS in Differential phase splitter?
  70. Need schematic for Smart 2x150vt
  71. Antek OPT
  72. 6DQ6 for audio power amp?
  73. Anyone identify this Mullard?
  74. My Mullard 5-20: some photos and a question
  75. Tube can work in low volt~~fix your knowledge
  76. A problem with a tube receiver
  77. Auto Transformer - safety advice
  78. Where I could find tube in San Jose
  79. 6Н30П spice model for MicroCap ?
  80. Transformer input and resonance
  81. GE6111 Preamplifier
  82. Where to buy audio tubes in Europe
  83. Play iPod into 1955 Record Player's Tube Amplifier
  84. To Schade it , or not..
  85. questions on input stage
  86. Planar/Lighthouse triodes for Audio?
  87. The Best coupling cap..THEL??
  88. 211 SET 40W output design and mfg.
  89. Volume Control with Loudness and no Taps
  90. Use for 4k PP (non UL) OPT's?
  91. Heathkit Oscilloscope O-12
  92. Filament Autobias
  93. Shelby NC Ham Fest
  94. 2A3 Spud
  95. Resistor as a load
  96. How to balance pushp pull DHT finals
  97. 240v to 220v
  98. Hammond 272 FX plate voltage
  99. Drawing Load Line for Parallel Output Tube
  100. question about swapping el34 for kt77 in my tube amp
  101. 6 volt recifier tubes
  102. PSU Capacitor Selection
  103. Output transformer sizing...again...
  104. Power supply cabling
  105. Voltage doubler using PSUII?
  106. Rectifier Tubes in SE Amps
  107. 6v6 SEP
  108. 1967 Pioneer SX-34, 11W, WORTH FIXING???
  109. Jumper Wire Gauge and Material for Phono Preamp?
  110. Tube libraries for AutoTRAX wanted.
  111. DIY Layout Creator for Chassis Designs
  112. ecc99 - 6C19n PP, (6S19P)
  113. Dr Z Carmen Ghia build from a Hammond Reverb amp!!
  114. Strange HF distortion
  115. have a pair of 5k:8 OPTs lying around.. suggest me something to build?
  116. Marshall 1959 (Super Tremolo) repair help
  117. Early history of High Fidelity amplifiers
  118. Which pentode for input?
  119. 6n6p or 6P14P-ev for driver
  120. Old tranny - confused with windings
  121. Dynaco A-430 Vintage Output Transformers
  122. Output tube for 800 Ohm speaker?
  123. Today was the anual Tree Street Yard Sale event
  124. Florida ? what did I get ?
  125. 26HU5's vs 26DQ5's
  126. VoltCraft AT-400?
  127. Sonic differences: 45, 2A3, 300B, 845, 211
  128. Need help wiring a pot for cathode adjustment
  129. Sound of the 6SN7?
  130. A mystery device
  131. Plate curves... Ic2 & Ib?
  132. How to choke load for big voltage swings?
  133. 6550 SE design, please comment.
  134. "Impedance" of the output transformer
  135. Triode-wired small signal pentode question
  136. Calculating output impedance
  137. 6JM6 Infomation for Pete Millett's DCPP Amp
  138. Tube labeld ETBB
  139. Heaters wiring help!
  140. What do you guys think of this IR volume control?
  141. Can you send me the Aikido 5687 user manual
  142. Cathode Follower output cap
  143. EL84 rebuild suggestions
  144. voltage divider in WE91 driver
  145. Power Tx Myth?
  146. voltage multiplier based on SS trafo - LONG
  147. What tube for QUIET phono pre??
  148. A&R 8ohm 4008 output transformer
  149. How does DRD Ultrapath Work?
  150. Russian 6H2p-E??
  151. Started work on my stereo 7027a PSE amp
  152. Mono Tube Comp for analog kick drum
  153. Line stage preamplifier
  154. Trying to select the Aikido components
  155. X-PRE musical fidelity preamp. need help modifying
  156. 6C33C & Borbely Question
  157. 12BH7A in common cathode
  158. Sneak Preview: 9 Band Active All Tube EQ
  159. Bought a set of Greenlee conduit punches for my latest project - WOW!
  160. "Universal" octal amplifier?
  161. MU follower - distortion
  162. lighting transformers 12V
  163. Chinese 6N3 preamp questions
  164. Why are Chinese preamp knockoffs so popular?
  165. 4K7 OPT suitable for 6550/KT88?
  166. Transformer question - 110 v and 25 v from 1 secondary?
  167. About loadline again, how to choose load and current
  168. Parallel Output Transformers
  169. 6SN7 / 6V6 power amp : very odd behavour
  170. HV mA Spec on Large RCA Power Xfmr?
  171. Is the Aikido too 'bright'?
  172. Has anyone put the Glassware phono & line amps in same box?
  173. High impedance balanced output: how long the cable?
  174. Data Sheets
  175. Can I use a LM317 bias on lower cathode of SRPP?
  176. AU-34 Output transformer replacement question
  177. The new KT120 from tungsol
  178. em83 questions
  179. Push-pull PCL84 schematic and a question
  180. confused on power transformer ratings
  181. C3g:GM70:GM70 schematic advice
  182. Can someone explain Load Lines?
  183. Humming from WCF but not SRPP
  184. Gas regulator tubes
  185. My B&K 707 sensitivity seems wonky
  186. Lowrey LC1 B schematic wanted
  187. Complete tube amp novice got a few questions!!
  188. jacked up the bias...WOW!
  189. Looking for PP 7027a shematic
  190. So, if it's not DIY Gene, then what?
  191. What driver tube for 200Vrms?
  192. Tube socket purchase
  193. Something I found interesting a while ago!
  194. Eico HF-22 Circuit
  195. SEDHT amp - decisions decisions
  196. Confused with designing
  197. Digitally controlled analog attenuator
  198. Purchased my 1st valve amp and can only get one channel working, please help!
  199. Another silly tube yesting question
  200. potentially very stupid questions....
  201. Tube rectifier: AZ1, AZ31, AZ50 vs 5u4
  202. Tube Square-Law, what and how to set up?
  203. Need help finding schematic. Conn 720
  204. OPT for parafeed SE
  205. Anyone else tried an opamp as a driver?
  206. e180f/6688 pentode operting points
  207. power supply reassignment problem
  208. Mains power transformer on S5 K-12 kit hums?
  209. Oriole OPT
  210. 26DQ5's vs 26HU5's vs 6KN6's and transformers
  211. SRPP power using power tranny as OPT?
  212. Need guidance with heathkit SA-2 refurbish/mods
  213. B+ discharge times!
  214. 26HU5's....and a confession
  215. Bell Sound Systems Pacemaker Model 2220
  216. Any thoughts on this transformer on eBay?
  217. Need some help figuring out a Wurlitzer 6240.
  218. Bypassing cathode resistor on pp power tube
  219. Is it safe to use a 8BQ5 in place of a 6BQ5 in a guitar amp?
  220. TRIODE Voltage amp + Power OP output follower
  221. Cats and tube-a-holics
  222. Replace Tube Rectifier With Weber CC?
  223. 717a 2 stage SE amplifier
  224. Thoughts on Oatley K282 Valve Preamp?
  225. SS rectifier for SimpleSE and others...
  226. Need match Pr KT-88
  227. EL34 PP - again !!!
  228. S5 K-12 Kit sounds excellent with iPod, but relatively low volume with turntable?
  229. Finished K-12 Kit with cedar / brass chassis (pics)
  230. Groove Tube Dual 75 schematics
  231. Tubes HOT!
  232. Meng volume pot problem
  233. Use P-P OPT for SE?
  234. Safety ?
  235. Film caps always better than lytics?
  236. Valve Preamp for voice / guitar purpose
  237. 851 set?
  238. dual cathode follower problem
  239. Question about connecting grounds
  240. Is it okay for capacitors to be close to the main power transformer in S5 K-12 Kit?
  241. Fisher 500C Schematic
  242. looking for PP 6l6 schematic
  243. Muiscal Paradise MP-301 6V6 amp.
  244. First Build - PS Voltage Question?
  245. Need help about an hybrid amp circuit
  246. Radio to guitaramp conversion hum problem
  247. Pioneer SX-348 - Service manual?
  248. Tube PS for mic preamp Help
  249. Add rectifier tube to yaqin mc10l? What size is best?
  250. global negative feedback schematic

Content Relevant URLs by vBSEO 3.3.2