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. 6p15p
  2. help with paul hynes reg
  3. Vinyl Savor 6CB5A SE Amps?
  4. PSU RC filter vs. VR regulator tube
  5. VTL Deluxe tube mystery
  6. My First SPUD Amp, 6EM7
  7. GK-71 SE amp
  8. 12ax7 Phono Preamplifier
  9. Aikido 6GM8 (ECC86) HPA or How I built a tube amp with non-scary voltages
  10. "Langham" Phase Inverter Origin?
  11. Adding "tube sound" via inline circuit
  12. Radford STA25 Renaissance - HELP!
  13. Capacitor across B+ and the input signal on the primary of the output transformer
  14. Zenith KPS-80 Rebuild
  15. 50+ watt diy tube amp recommedations
  16. Trouble with PSUD 2 high current / low voltage
  17. Magnavox 175 clone w/Fisher OPTs?
  18. First post here, need some help with PSU for amplifier
  19. Novice build of 6EM7 circuit. PSU advice.
  20. All DHT single-ended 211 amp suggestion?
  21. Adding inputs to Melody SP3 mk2
  22. Repurpose vertical output autoformer?
  23. Power supply for tube preamp - Help!
  24. Good ECL84 / 6DX8 Tube - Correct Pentode Spice Model Needed!!!
  25. Assistance with 211 powerdrive type design
  26. Passive pre for kt88 push pull
  27. Current production tubes testing used/low out of the box?
  28. Safe to use bare (laquered) copper wire for heaters?
  29. power supply
  30. Power transformer question
  31. 10W+10W EL34+ECC83 single-ended Class A Stereo amplifier Kit wlx
  32. Testing Volume Controls
  33. Rowe R-4359A Amplifier
  34. Converting pentode to triode
  35. Nuvistor heater current inrush question
  36. Stereo Pre-amp build issues
  37. Triode 843
  38. 12ax7 preamp tube for jolida 1501BRC
  39. Volume pot for tube preamp
  40. I finally won my fight to kill the hum, but not clear why
  41. HK A500 phono issues
  42. Parallel Damper Tubes for Voltage Doubler
  43. Good schematic (circuit) with tube 12ax7
  44. Potientiameter
  45. HH Scott 299C tube integrated amp channel B music comes on after 15 mins to 20 mins?
  46. transformer wiring
  47. Looking for help with my Emotive Audio ETA Amplifier
  48. Running tubes' filament on DC
  49. 6.3V Rectifiers and winding sharing?
  50. Audio colume controls / atternuators
  51. Determining output transformer turn ratio and impedance
  52. GM70 build startup
  53. Yukon Gold - a spud amp
  54. 310A (328A) triode curves
  55. Can anybody identify the manufacturer of this pcf80
  56. Need advice on Quad 22 repair
  57. 2P1P Russian tetrode
  58. Bogen MO-100 increase PS capacitor
  59. Does O-netics make SE OPTs?
  60. 1939 Rockola amp
  61. Yet another Aikido? NOVAL vs OCTAL
  62. Why are tube amp wattages low
  63. Vintage kt88 pp mod suggestions
  64. Balanced Bridge mode?
  65. Little Bear P5-1
  66. 10M45 power diss. w/ 6EM7 (12mA)
  67. Hot chassis death traps
  68. Do we need this input resistor?
  69. Brimar thermionic products 2015
  70. 'Cheap' 2A3 P-P OPT
  71. Thoughts/?'s about gain stages and PI
  72. 300V & 12.6V regulated power supply.
  73. Remember the Ekco radios.
  74. Converting hybrid from ECC88 to 6N1P
  75. What is, --'Crosswalk'...?
  76. first time dyi help
  77. 500k potentiometer to 100k - okay?
  78. B&K 707 Chart for Russian Tubes
  79. rca transformer output
  80. Western Electric 300B tubes
  81. Interstage transformer crosswalk help
  82. DC coupled MOSFET drivers for output stage - simple questions
  83. 813 PP Audio Amp Help
  84. Bargain basement coupling caps
  85. TX 2575
  86. HK Citation II Negative Feedback question... how can I measure it?
  87. a little help with the aikido lv?
  88. Is it possible for a tube to not light up without any visual other indicators?
  89. Oversized OPTs
  90. How to calculate global NFB CAPACITOR. Is it needed?
  91. Simple driver for positive grid tubes
  92. Is this how to create a full wave rectifier?
  93. Surplus for tubes in NY and Miami
  94. Lux CL-35 tone control simulation issue
  95. Stereo SE in Parallel?
  96. 6AR6: A new tube to play with
  97. Time for another dumb question
  98. CBS 12AU7?
  99. SE UL 6V6 GT
  100. RCA output transformer part # 246860
  101. 801A Battery Bias
  102. Acoustat Servo Amps
  103. how to connect output transformers??
  104. Tube Amp Power transformer getting Hot...dumb question
  105. Where to get tubes for DCPP build?
  106. Pro and Cons to use 4 ohm tap for Global Feedback instead of 8 ohm tap
  107. Any quality Chinese tube amps?
  108. 6V6 Single Ended question
  109. C. Follower w/- active load
  110. Bias adjustment in Stereo Power Amp with 4 x EL34
  111. All Tube MC Phono Head Amp
  112. Marantz 7 Tube pre-amplifier PCB Board Design
  113. Miller capacitance
  114. Regarding pin 1 & pin 8 EL34
  115. Better place for noise to put the Global Feedback resistor
  116. Change 12AY7 to 12AX7 Tube. Waht new settings?
  117. Bogen MO-100: Series and blown power transformer
  118. Tung Sol Reissue 6550 Ratings/ Reliability
  119. How do I calculate shunt resistor value in a heater series string
  120. Mikael Abdellah KT88 tweak
  121. Replacing caps 50uf with 47UF
  122. Where can buy those earthing rods?
  123. 845 tube biasing strangly
  124. Which phono should I pick?
  125. Combination of Philips en Psvane tubes EL34
  126. 388A datasheet
  127. Build diary - Ciuffoli all triode OTL
  128. porta fi modification help please
  129. Help me ID 6SN7 GTB Baldwin
  130. Some help with output transformers induced hum
  131. VA rating needed for Single End Power Supply
  132. Improved Mullard circuit
  133. Evaluating Tube Diodes as Rectifiers
  134. Output Transformer Saturation, Impedance Load Curve...
  135. HK Citation II - strange issues
  136. Combination of PCB and point to point wiring a bad idea?
  137. Sound Valves M60 red plated badly please help?
  138. Old tube Radio Conversion
  139. I need something that will take place of a 5965
  140. Mu Follower Analysis
  141. Looking for advice on selling an expensive tube (WE 274A)
  142. 6EM7 SET Amplifier
  143. El84-6BQ5... NOT!!!! just a lookalike!
  144. How to modify the Little Bear P8 preamp to become an amp?
  145. Differential Shunt Cascode Driver
  146. GZ32 vs ss rectifier
  147. Where do I put the resistor?
  148. been laying low - revisiting a KT88 partial FB amp
  149. SET Rebuild (Fixed Bias and Rod Coleman DHT Regulators)
  150. ATTN Sy: Why gold grids 2
  151. "el escorpion" line stage, plus 10W B+ flyback supply & mute circuit
  152. Cathode Follower config for Tube DI
  153. Replacing capacitors in a VTL300 power amp
  154. how do I connect a plate amp for subwoofer to tube amp
  155. 6sn7 why the soft clipping.
  156. Yes we need Tone Controls! An outstanding project from 1962
  157. counterpoint sa4 otl
  158. Eico ST40 Kit
  159. Audio output transformer
  160. Thoughts on this schematic actually working.
  161. PSUD2 on Mac
  162. Two-section 500V electrolytic caps for cheap (new production)
  163. I am completely new to tubes.
  164. 2C50 Preamp Schematic
  165. Yet another RH84
  166. Example of Anode Follower (plate follower) with volume ctrl?
  167. Beginner DIY Amp
  168. EF86 Grid/anode triode question.
  169. Tube power supply
  170. Citation II... can't get enough bias!
  171. Auto Radio Tubes
  172. 4 edition valve amplifiers (in London)
  173. Need Help With Screen Switch
  174. Output transformer help
  175. When to use artificial center tap
  176. High end car project- looking for advice
  177. I hate wiring amps!
  178. Silicone tube rings
  179. Quad Audio Digital Potentiometer for Tube Preamp
  180. Looking for grounded grid preamp schematic that use only 12ax7/420a
  181. Someone, please check my plot.
  182. Selecting output transformer for OTL headphone amp
  183. RCA tube preamplifier help
  184. Flickering knocking sound on a push pull EL34 configuration.
  185. Tubes headphone amplifier
  186. Custom tube amplifier builders
  187. New to valve cheap pre-amp tweak help please?
  188. ARC SP-3A-1 Tube Opinions
  189. Has anyone tried a "12AU7 to 6SN7 Adapter"?
  190. 300b filament on pb accumulator
  191. 2K2M Tubes...any use?
  192. GK-71 SE or PP?
  193. Electrolytic capacitors high quality
  194. 6HV5 / CCS - driver project
  195. Getting 60W from 6C33C pushpull
  196. Phono Pre - Chassis layout
  197. Heyco strain relief pliers
  198. RH84 and Electron stream question.
  199. 845 amp.. Now I've got a faint hum..
  200. "Lisa trafo" transformer builder
  201. KT-90 odd behavior
  202. ecc99-2a3
  203. 6SJ7 gain setup
  204. Prototype for 2X 20 Triode
  205. 6n1p preamp schematic
  206. PSU Choke - Valve Phono Pre project
  207. LND150 gyrator for ECC83/12AX7 ???
  208. GU-48 Tube amplifier 833A
  209. OTL with custom 64ohm speakers... Idea in the making
  210. Snap, Crackle, Pop!
  211. What normally causes buzzing?
  212. 690R:8R output transformer
  213. Redplate and Other Questions
  214. Tube wisdom...
  215. 01B thoriated tungsten filaments?
  216. Distortion/Low Signal/Noise from Ampex 620 after being on for 5 minutes?
  217. Max Plate (Boost + DC Supply), what does it mean
  218. It's been a while since I've been here...
  219. Quicksilver Silver Mono Mods
  220. Chinese, Single-Ended, Class A, Questions.
  221. Balanced Aikido Hum
  222. Pentode Tone Control Module
  223. Reason for no output reading and blown tube
  224. Volume control for 24v Aikido pre
  225. First Tube Project
  226. Pentode or triode mode EL84 design suggestions
  227. Question about the need for OPTs for headphone amps
  228. Help with ne-2 lamp in my tube tester!!
  229. Looking for a SRPP Calculator
  230. Snubber at primary SE
  231. JJ ECC802 grid current
  232. Tube Regulator Current Limiting Resistor?
  233. What tube
  234. 6AH4 Preamp Help
  235. B&K 650 signal voltage cal
  236. Testing on latest PP 300B build
  237. Book - Audiophile Vacuum Tube Amplifiers -
  238. Fusion Postmodernism and push tube amps 6SN7 + 26 45
  239. 6GE5 Triode
  240. Any plans to build a 100W per channel power amp?
  241. voltage drops HELP
  242. 2in1 headphone amp
  243. DIY Tube Amp with phono
  244. active loading and point to point
  245. Which tubes are having biggest influence on sound (not power)?
  246. Using epoxy to add mechanical strength to solder joints
  247. Output Transformers in series
  248. Trying to ID maker of O/P Transformers from 'Fuji-Star' tuner
  249. Dynaco Gear or Marketing?
  250. Help me ID these tubes

Content Relevant URLs by vBSEO 3.3.2