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

  1. Ultra-Linear vs. Pentode Longevity
  2. RCA PA amp SA752LO...
  3. Running preamp into acive speakers with cap input
  4. Putting Stock In Carver?
  5. Weak treble
  6. About GU50 PP in UL with separate G2 winding and supply
  7. tube tester comparison
  8. Volume control after the preamp stage or before ?
  9. COPLAND CTA 401 - upgrade of components ?
  10. 2 amp simulation/dummy load for transformer
  11. Optimal Operating Point for E280F Driver for 300B Single End Amplifier
  12. 809 Triodes
  13. PSRR
  14. Looking for a schematic or link to a post
  15. Who makes a Williamson output transformer ?
  16. Help with an S5 K12-G Tube Amp
  17. Turing's new tube amps. Please give staff about.
  18. Life Expectancy of DHT's
  19. 6GB8 data sheet translation needed
  20. Full Wave Rectifiers: Center Tapped vs. Bridged
  21. Vectorscope?
  22. Apple macmini become to 6MD8 tube amp
  23. Potting Wax?
  24. How do I repair my Tube Amp?
  25. asr433 simple problem (i hope)
  26. Russian Tube Codes
  27. Help: Driver Stage Design
  28. PAS Power Transformer Capability
  29. 7A5 tube...a small marvel !!!
  30. phono preamp for the s5 electronics model 16ls amp
  31. Screen Stopper Blew
  32. Hickok 533 and 6dj8/6922
  33. OTL design opinion
  34. Pile of TEK scopes.........what do I keep?
  35. Inclusion of an oscilloscope on tester
  36. 6V6SE - Suggestions?
  37. Heretical Line Stage: BOM?
  38. Tube amp to drive 4 ohm headphones?
  39. Another TVA1 - KT88 power amplifier
  40. 845 parafeed
  41. datasheet 6P44C
  42. ecc85 tube buffer or line stage?
  43. Valvestate 8080 That's been dog Peed...
  44. "An elegant full function tube preamp mated to 1st rate SS power amp"
  45. How to select a good Hifi 12AX7 tube?
  46. LTP with CCS and negative PS
  47. Odd phase splitter
  48. Yet Another Hybrid Amplifier
  49. what Lundahl OPT for headphone 2A3 amp? (for HD800)
  50. Heater to Cathode voltage e88cc
  51. ASR-433
  52. Marantz 8B phase splitter
  53. Bob Latino ST120 Down
  54. SS phase splitters?
  55. Supply Filtering and why Capacitance Multipliers are NOT the Answer
  56. SE 6L6 to KT88
  57. HT power supply design
  58. Good tubes for concertina - 4P1L maybe?
  59. Powr supply question
  60. What is wrong with this Amplifier?
  61. Palmer DREI - Three SE Output Tubes Together?
  62. Heathkit TC-2 Checker and KT88s
  63. my Dummy Amp Contraption
  64. HF Oscillation Heat-Up Spk's Magnet!?
  65. Triode calculations
  66. Western Electric 131
  67. Electrolytic vs. Film 2A3 Cathode Bypass?
  68. Sylvania JAN 6SN7WGTA, late 1970's
  69. TV7 tester problem with 6CB5A tube
  70. Stromberg-Carlson AP-55
  71. SHUGUANG 2A3
  72. Circuit breaker help.
  73. Recommend me a bookshelf speaker for 5W
  74. Monarch STA 100X weird?
  75. 1954 US Army "Sound Repeater" amplifier
  76. 6N7...this configuration work ?
  77. RIAA Active EQ
  78. Direct Coupled E-Linear Amp
  79. Double Triode Mu
  80. Music Angel kt88 new pcbs problem
  81. EL503 replacement?
  82. Reducing gain in a SRPP circuit with ECC82?
  83. 12XX7 Triodes
  84. Output Tx just for interest
  85. Valab in Taiwan output transformers
  86. Impedance Question
  87. How to include a dual triode tube in a KiCAD schematic?
  88. 12U7 SPICE Model
  89. Phono Stage Woofer Bounce
  90. Problem with new L3-3 please help!
  91. Edcor output transformer...very nice !!!
  92. SE Hybrid Amp "The Lunatic one"
  93. Marantz 8b power transformer B+ down 30%
  94. Single or paralell trafo?
  95. CJ PV 5 Impedance?
  96. ECF80 driving EL84 PP
  97. Luhdahl LL1660S what current rating for D3a driver?
  98. what's that cap?
  99. SE EL84 Component placement Suggestion
  100. How to make a cheap 6N3 Buffer Amp even better?
  101. buying Tube Amps need advice/opinions
  102. dynaco pas3
  103. 5U4GB full-wave bridge, stumped
  104. HELP NEEDED for a 6CA4/EZ81 power supply
  105. OT for 2A3 PSE w/Parafeed
  106. More Dynaco Mark VI Questions
  107. curious feedback in circuit of Pioneer SM-Q300 receiver
  108. Hytron 2E25 - Other forgotten and marvelous tube !
  109. need tube upgrade advice please sir
  110. buyer beware
  111. JJ 5y3S pin 1??
  112. My first Sansui AU-111 Rebuild
  113. Capacitor-induced distortion
  114. Elevating Heater Voltage with multiple Transformer Heater Secondaries
  115. Common Cathode as DAC output
  116. Pre-Amp with russian tubes 1j24b
  117. How to calculate, the output impedance of a tube with grounded grid
  118. How To Draw Load Line With Output Transformer ?
  119. Inter electrode capacitance.
  120. My amp is an oscillator !
  121. TESLA PL509
  122. What value for Va ?
  123. Help selecting an input transformer ?
  124. Should same valves grid voltage vary much ?
  125. Driver options for 300B-XLS (4P1L-IS-4P1L-IS)
  126. Restoring a Scott 299-B
  127. Latest project, 80 watt valve amplifier
  128. PP Amp Doubling Output Power
  129. Setting up a Wilson current mirror as a differential load
  130. interested in tube amps
  131. Baldwin 45P amp project
  132. DIYGene's Jadis JP-200 Preamp Kit
  133. Need design/schematic for 6H30P driven 6C33C SET
  134. Substitute 6AQ8 for my 6CG7's
  135. 6bq5 tubes in a Heathkit AA-151
  136. Marantz 8b restoration: colour code, prints, schematics
  137. Show me your screen drive circuits
  138. Potting Compounds
  139. Chokes in the ground "plane"
  140. OTL idea
  141. Balance control tip for newbee's
  142. Ebay win - is this any good?
  143. 6sn7 pse amp for altec lansing 604E
  144. "Cockeyed Bridge" with damper diode?
  145. Mac 2100 Hybrid
  146. Single-Stage Hybrid Cascode Power Amp
  147. New to Tube amps, heathkit question
  148. 6AS7 OTL PL build
  149. On Bootstrapping diodes for UL G2 MOSFET
  150. Chasing Aikido "hum"
  151. valve monobloc designs
  152. 7A5 is a good driver for the 300B ?
  153. Parallel Push Pull 6V6 design
  154. Soundstage
  155. Brains & Brawn CF : where's the catch ?
  156. ISO-TANGO to quit
  157. Shifting reflective loads using secondary taps?
  158. VTL -- 20 6550's a side and their xfmrs
  159. "Diamond" tube preamp with 12au7
  160. Wich factory made this tube ?
  161. Bootstrapped Cathode Coupled Amplifier
  162. OTL 6AS7
  163. Diode performance testing
  164. Monacor SA-10
  165. Volume Control Hum
  166. Stromberg-Carlson AP-50
  167. 5 wire and 3 wire output transformer change ?
  168. Yaqin mc 10L
  169. Can OTL Ciclotron amp use solid state regulated PS?
  170. Cross-channel overtalk with strange effects
  171. Why 6.3V?
  172. KT88 Williamson Design Questions
  173. Winding a center-tap secondary
  174. HV delay switch
  175. McIntosh MC-30...Balanced Input Feasible?
  176. Designing line driver / pre-amp
  177. Bucking and boosting a tube power transformer
  178. 33A-158M
  179. All DHT integrated amp
  180. 6N1P
  181. basic query - Pete Millett 807 board.
  182. Tube Tester with undocumented tubes
  183. "Fritz" the Boston/RI tube guy - ANYONE know what became of him??
  184. EI yugoslavia gone forever.
  185. Quicksilver 8417 Design - Stay with it or modify?
  186. Looking for some advice on odd preamp noise issue
  187. Tubes in an opamp feedback loop ?
  188. Jensen P-P Cathode Follower
  189. Cathode follower rigorous definition.
  190. Little Bear P3 ?!?! opinions ?
  191. NOS GU-81
  192. OPT endbell color!
  193. Music Angel kt88 with unbalanced output.. help me!
  194. Heater Supply Center Tap
  195. SCA-35 Pot noise
  196. Conrad Johnson MV 55
  197. Comments on 6C33C-B ARG OTL
  198. Construction tips for high voltage amps.
  199. 6L6 bias
  200. came across Mingda Tube king mono blocks
  201. a lot of noise
  202. El84 pp Amp problem
  203. Power on filament current surge question
  204. Its likely a repost but W/e
  205. Scored some 8236's....
  206. What causes valve to glow red inside ?
  207. Tubes and radioisotope decay
  208. PSUDII Question
  209. DIY Bias Buddy
  210. Recommend me a high power OPT
  211. Design Shorting Tubes?
  212. Microsoft Tube Amp and Speakers
  213. S5 K-16LS Tone Control - Help Please
  214. SEUL Circuit for PL519, has anyone here built this?
  215. Motorola three channel
  216. Your own builders book
  217. WE91A - high frequency roll off
  218. Dynaco MarkIII dimensions
  219. Leak TL12+ smoothing capacitors.
  220. Question about failing 6550 output
  221. Need help converting Ampex 960 R2R to a preamp...
  222. 5751 SPICE Model -- for Poddwatt II
  223. Configuring an Audio Transformer for 8 Ohmsuring
  224. OTL Blocking cap / RC filter
  225. What do you think..OP Tx
  226. Does anyone have GA399MA.pdf?
  227. New Amp Build, First Post
  228. Twisting HV leads
  229. Phono MC/MM Stage like Audio Space Reference Two RIAA Section
  230. Help with AVO MK IV Meter
  231. Why use a pentode?
  232. Filter choke temperature concerns
  233. Is my output transformer damaged?
  234. Parafeed without a cap
  235. Edcor Transformer Problems
  236. From The Daft Idea Department
  237. Do I need a resistor between plates? pic included.
  238. Tube preamp overheating characteristics?
  239. Valve amplifier sounds great
  240. volume pot hum at low and high volume
  241. Thank You
  242. Help Needed ;)
  243. Mullard EL-34: new vs vintage
  244. A new IC for monitoring tubes
  245. 6L6 transformer on EL84
  246. Output transformer design
  247. Tubes4HiFi preamp questions
  248. Newbie advice - Phono Preamp/1st electronics build
  249. Got a HeathKit, now what to do?
  250. 4P1L push pull amp with Lundahl zero global feedback

Content Relevant URLs by vBSEO 3.3.2