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

  1. Screen Grid Peak Voltage
  2. Unknown (Westrex?) AE285 KT66 cinema amplifier
  3. Has anyone dual-monoed a Stereo 70?
  4. CV2799 (Mullard) QQV04-20 parallel single-ended audio amplifier
  5. Pentode G1 series resistance effects.
  6. MUZAK 975a 75watt, 50s
  7. Hybrid SS/Tube Balanced Mic Pre
  8. Adding a baland pot to cathodes on a cathode biased amp?
  9. Is the 8532W a substitute for 8532?
  10. Low cost class A Hi-Fi amplifier 807 S.E. Ultralinear - Pentode drivers [6G6G]
  11. Configuring 2A3 Driver for 2A3 PSE
  12. Integrated Tube Amp opinion
  13. Ultra-Linear vs. Pentode Longevity
  14. RCA PA amp SA752LO...
  15. Running preamp into acive speakers with cap input
  16. Putting Stock In Carver?
  17. Weak treble
  18. About GU50 PP in UL with separate G2 winding and supply
  19. Volume control after the preamp stage or before ?
  20. COPLAND CTA 401 - upgrade of components ?
  21. 2 amp simulation/dummy load for transformer
  22. Optimal Operating Point for E280F Driver for 300B Single End Amplifier
  23. 809 Triodes
  24. PSRR
  25. Looking for a schematic or link to a post
  26. Who makes a Williamson output transformer ?
  27. Help with an S5 K12-G Tube Amp
  28. Turing's new tube amps. Please give staff about.
  29. Life Expectancy of DHT's
  30. 6GB8 data sheet translation needed
  31. Full Wave Rectifiers: Center Tapped vs. Bridged
  32. Vectorscope?
  33. Apple macmini become to 6MD8 tube amp
  34. Potting Wax?
  35. How do I repair my Tube Amp?
  36. asr433 simple problem (i hope)
  37. Russian Tube Codes
  38. Help: Driver Stage Design
  39. PAS Power Transformer Capability
  40. 7A5 tube...a small marvel !!!
  41. phono preamp for the s5 electronics model 16ls amp
  42. Screen Stopper Blew
  43. OTL design opinion
  44. Pile of TEK scopes.........what do I keep?
  45. Inclusion of an oscilloscope on tester
  46. 6V6SE - Suggestions?
  47. Heretical Line Stage: BOM?
  48. Tube amp to drive 4 ohm headphones?
  49. Another TVA1 - KT88 power amplifier
  50. 845 parafeed
  51. datasheet 6P44C
  52. ecc85 tube buffer or line stage?
  53. Valvestate 8080 That's been dog Peed...
  54. "An elegant full function tube preamp mated to 1st rate SS power amp"
  55. How to select a good Hifi 12AX7 tube?
  56. LTP with CCS and negative PS
  57. Odd phase splitter
  58. Yet Another Hybrid Amplifier
  59. what Lundahl OPT for headphone 2A3 amp? (for HD800)
  60. Heater to Cathode voltage e88cc
  61. ASR-433
  62. Marantz 8B phase splitter
  63. Bob Latino ST120 Down
  64. SS phase splitters?
  65. Supply Filtering and why Capacitance Multipliers are NOT the Answer
  66. SE 6L6 to KT88
  67. HT power supply design
  68. Good tubes for concertina - 4P1L maybe?
  69. Powr supply question
  70. What is wrong with this Amplifier?
  71. Palmer DREI - Three SE Output Tubes Together?
  72. Heathkit TC-2 Checker and KT88s
  73. my Dummy Amp Contraption
  74. HF Oscillation Heat-Up Spk's Magnet!?
  75. Triode calculations
  76. Western Electric 131
  77. Electrolytic vs. Film 2A3 Cathode Bypass?
  78. Sylvania JAN 6SN7WGTA, late 1970's
  79. Stromberg-Carlson AP-55
  80. SHUGUANG 2A3
  81. Circuit breaker help.
  82. Recommend me a bookshelf speaker for 5W
  83. Monarch STA 100X weird?
  84. 1954 US Army "Sound Repeater" amplifier
  85. 6N7...this configuration work ?
  86. RIAA Active EQ
  87. Direct Coupled E-Linear Amp
  88. Double Triode Mu
  89. Music Angel kt88 new pcbs problem
  90. EL503 replacement?
  91. Reducing gain in a SRPP circuit with ECC82?
  92. 12XX7 Triodes
  93. Output Tx just for interest
  94. Valab in Taiwan output transformers
  95. Impedance Question
  96. How to include a dual triode tube in a KiCAD schematic?
  97. 12U7 SPICE Model
  98. Phono Stage Woofer Bounce
  99. Problem with new L3-3 please help!
  100. Edcor output transformer...very nice !!!
  101. SE Hybrid Amp "The Lunatic one"
  102. Marantz 8b power transformer B+ down 30%
  103. Single or paralell trafo?
  104. CJ PV 5 Impedance?
  105. ECF80 driving EL84 PP
  106. Luhdahl LL1660S what current rating for D3a driver?
  107. what's that cap?
  108. SE EL84 Component placement Suggestion
  109. How to make a cheap 6N3 Buffer Amp even better?
  110. buying Tube Amps need advice/opinions
  111. dynaco pas3
  112. 5U4GB full-wave bridge, stumped
  113. HELP NEEDED for a 6CA4/EZ81 power supply
  114. OT for 2A3 PSE w/Parafeed
  115. More Dynaco Mark VI Questions
  116. curious feedback in circuit of Pioneer SM-Q300 receiver
  117. Hytron 2E25 - Other forgotten and marvelous tube !
  118. need tube upgrade advice please sir
  119. buyer beware
  120. JJ 5y3S pin 1??
  121. My first Sansui AU-111 Rebuild
  122. Capacitor-induced distortion
  123. Elevating Heater Voltage with multiple Transformer Heater Secondaries
  124. Common Cathode as DAC output
  125. Pre-Amp with russian tubes 1j24b
  126. How to calculate, the output impedance of a tube with grounded grid
  127. How To Draw Load Line With Output Transformer ?
  128. Inter electrode capacitance.
  129. My amp is an oscillator !
  130. TESLA PL509
  131. What value for Va ?
  132. Help selecting an input transformer ?
  133. Should same valves grid voltage vary much ?
  134. Driver options for 300B-XLS (4P1L-IS-4P1L-IS)
  135. Restoring a Scott 299-B
  136. Latest project, 80 watt valve amplifier
  137. PP Amp Doubling Output Power
  138. Setting up a Wilson current mirror as a differential load
  139. interested in tube amps
  140. Baldwin 45P amp project
  141. DIYGene's Jadis JP-200 Preamp Kit
  142. Need design/schematic for 6H30P driven 6C33C SET
  143. Substitute 6AQ8 for my 6CG7's
  144. 6bq5 tubes in a Heathkit AA-151
  145. Marantz 8b restoration: colour code, prints, schematics
  146. Show me your screen drive circuits
  147. Potting Compounds
  148. Chokes in the ground "plane"
  149. OTL idea
  150. Balance control tip for newbee's
  151. Ebay win - is this any good?
  152. 6sn7 pse amp for altec lansing 604E
  153. "Cockeyed Bridge" with damper diode?
  154. Mac 2100 Hybrid
  155. Single-Stage Hybrid Cascode Power Amp
  156. New to Tube amps, heathkit question
  157. 6AS7 OTL PL build
  158. On Bootstrapping diodes for UL G2 MOSFET
  159. Chasing Aikido "hum"
  160. valve monobloc designs
  161. 7A5 is a good driver for the 300B ?
  162. Parallel Push Pull 6V6 design
  163. Soundstage
  164. Brains & Brawn CF : where's the catch ?
  165. ISO-TANGO to quit
  166. Shifting reflective loads using secondary taps?
  167. VTL -- 20 6550's a side and their xfmrs
  168. "Diamond" tube preamp with 12au7
  169. Wich factory made this tube ?
  170. Bootstrapped Cathode Coupled Amplifier
  171. OTL 6AS7
  172. Diode performance testing
  173. Monacor SA-10
  174. Volume Control Hum
  175. Stromberg-Carlson AP-50
  176. 5 wire and 3 wire output transformer change ?
  177. Yaqin mc 10L
  178. Can OTL Ciclotron amp use solid state regulated PS?
  179. Cross-channel overtalk with strange effects
  180. Why 6.3V?
  181. KT88 Williamson Design Questions
  182. Winding a center-tap secondary
  183. HV delay switch
  184. McIntosh MC-30...Balanced Input Feasible?
  185. Designing line driver / pre-amp
  186. Bucking and boosting a tube power transformer
  187. 33A-158M
  188. All DHT integrated amp
  189. 6N1P
  190. basic query - Pete Millett 807 board.
  191. "Fritz" the Boston/RI tube guy - ANYONE know what became of him??
  192. EI yugoslavia gone forever.
  193. Quicksilver 8417 Design - Stay with it or modify?
  194. Looking for some advice on odd preamp noise issue
  195. Tubes in an opamp feedback loop ?
  196. Jensen P-P Cathode Follower
  197. Cathode follower rigorous definition.
  198. Little Bear P3 ?!?! opinions ?
  199. NOS GU-81
  200. OPT endbell color!
  201. Music Angel kt88 with unbalanced output.. help me!
  202. Heater Supply Center Tap
  203. SCA-35 Pot noise
  204. Conrad Johnson MV 55
  205. Comments on 6C33C-B ARG OTL
  206. Construction tips for high voltage amps.
  207. 6L6 bias
  208. came across Mingda Tube king mono blocks
  209. a lot of noise
  210. El84 pp Amp problem
  211. Power on filament current surge question
  212. Its likely a repost but W/e
  213. Scored some 8236's....
  214. What causes valve to glow red inside ?
  215. Tubes and radioisotope decay
  216. PSUDII Question
  217. DIY Bias Buddy
  218. Recommend me a high power OPT
  219. Design Shorting Tubes?
  220. Microsoft Tube Amp and Speakers
  221. S5 K-16LS Tone Control - Help Please
  222. SEUL Circuit for PL519, has anyone here built this?
  223. Motorola three channel
  224. Your own builders book
  225. WE91A - high frequency roll off
  226. Dynaco MarkIII dimensions
  227. Leak TL12+ smoothing capacitors.
  228. Question about failing 6550 output
  229. Need help converting Ampex 960 R2R to a preamp...
  230. 5751 SPICE Model -- for Poddwatt II
  231. Configuring an Audio Transformer for 8 Ohmsuring
  232. OTL Blocking cap / RC filter
  233. What do you think..OP Tx
  234. Does anyone have GA399MA.pdf?
  235. New Amp Build, First Post
  236. Twisting HV leads
  237. Phono MC/MM Stage like Audio Space Reference Two RIAA Section
  238. Why use a pentode?
  239. Filter choke temperature concerns
  240. Is my output transformer damaged?
  241. Parafeed without a cap
  242. Edcor Transformer Problems
  243. From The Daft Idea Department
  244. Do I need a resistor between plates? pic included.
  245. Tube preamp overheating characteristics?
  246. Valve amplifier sounds great
  247. volume pot hum at low and high volume
  248. Thank You
  249. Help Needed ;)
  250. Mullard EL-34: new vs vintage

Content Relevant URLs by vBSEO 3.3.2