PDA

View Full Version : Amp Technical Info

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
  1. Using a 5Y3G in place of a 5Y3GT
  2. Tubes for UL TWIN?
  3. Fender BMR Power Tranny
  4. Test-driving preamp tubes--do I have to bias?
  5. Marshall 1987 and 1959 RI-- surprise inside
  6. help with a 10 watt tube amp
  7. amp tech?
  8. Sveltlana EL34's, opinions?
  9. Mullard/Siemans KT-77
  10. Pre-Amp Tube Order Question
  11. What to do with my Fender PA100 top?
  12. Power drop in Super Reverb
  13. 8 and 16 ohm load in parallal?
  14. Does a 6V6 need to line up in the socket?
  15. Reverb tank questions
  16. New SOZO caps,looks cool!
  17. Crackling on Reverb Knob?
  18. Gibson GA 15RV Speaker Issue
  19. Question about preamp and power amp tubes
  20. Unbuffered Effects Loop
  21. Stoutest new production 6V6?
  22. Headroom, Chokes, and Transformers -- Tweed Pro, Super, and Bandmaster
  23. Reverse Polarity Zener diode
  24. 1969 Twin Reverb extension speaker jack
  25. Original grey frame JBL D110F cone code?
  26. Weird Tone Change
  27. Rectifier question
  28. Celestion Blues
  29. Using two cabs simultaneously - possible or not (Marshall content)?
  30. Need Suggestions for NOS 6SL7's
  31. What does it mean when my power switch flickers?
  32. How do I mod/ground a 2 prong '68 amp?
  33. Tube bases loose - need fix
  34. I tried the reissue Mullard EL34 .....
  35. Ampeg Gemini VI info
  36. 5150 Bias Mod DIY
  37. SF Fender Twin help
  38. Marshall Valvestate problem
  39. Mesa DC5 Problem
  40. T-Nut Installation
  41. Help with my MESA
  42. Allen Old Flame mods
  43. 3 prong cord question.......
  44. Problem with Rich Mod (PPIMV)
  45. HELP: TRRI breaking up on 3!!!
  46. Cab/Speaker Wiring Help
  47. Marshall JMP-1 tube locations
  48. A question about Marshall tube power sections
  49. Mixing and Matching AX and AT7's in a Princeton Reverb
  50. High pitched squealing in reverb tank?
  51. Blown Fuse After Loud Jam Session
  52. Rectifiers
  53. Forward voltage for footswitch LED?
  54. Need 6CG7's - What are my options?
  55. gettin your amp biased: why and how?
  56. What EL34's will handle high plate/ screen voltages?
  57. Fender Blues Deluxe (chicago)
  58. Problem with the bias on a Bassman 100
  59. Repro Levant for late '60s Marshall cabinet??
  60. Need schematic of Fender footswitch
  61. Quick couple of preamp Tube Questions
  62. What are the hottest 12ax7's for a marshall valvestate
  63. Capacitors...can you hear the difference?
  64. Speaker switchout Need help!
  65. Ok...what does "organic" sound like.
  66. Output transformer knowledge sought...
  67. What are your most asked-for JCM800 mods?
  68. help! please...
  69. standby switch, whats up with the snap, crackle, pop?
  70. DC-5 FX loop mod
  71. Nos 12ay7
  72. Matchless HC30 chassis
  73. Replacing Plug
  74. 6L6's to EL34's
  75. Solid state amp blowing fuses
  76. Replacing the filter cap on a 66 bassman head
  77. Rectifier Plate Voltage Difference
  78. Fuse blowing
  79. custom wound vintage tranny sources?
  80. Bendix 5992 vs. RCA 6V6GT blackplates??
  81. Amp Designer said this (about bias-rite/bias king, etc)
  82. Cathode Biased.....with unmatched tubes?
  83. Dissipation Calculation question. For 6L6's
  84. Fixed resistance pad for tube amp, can it be done
  85. 407 Volts on EL84's
  86. Weber bias rite questions
  87. Aluminum vs Steel chassis?
  88. ID'ing Marshall Cabinet
  89. Electro Harmonix 12AX7 - Taking the bad with the good
  90. Resistor types in non-signal areas and effects on tone.
  91. Biasing
  92. Power supply resistors
  93. Speaker impedence please??
  94. Mesa Boogie tubes
  95. Re-bias a Carmen Ghia?
  96. 1968 G12M 20W Celestions
  97. 60 cycle hum in low power setting on Marshall 2555
  98. Marhsall TSL
  99. vintage Gibson BR6- tube problem?
  100. Question about 68 Bassman circuit.
  101. Speaker repair
  102. Have IEC Mullard tubes been "Made In Japan?"
  103. Just started my first amp build!
  104. Guitar amp tube definitions, functions...
  105. Twin Reverb Mods
  106. Can a 70's bassman PT handle the heater current draw of EL34's?
  107. Fender '64 Vibroverb Custom: help me bias the amp please
  108. bias cap
  109. Stupid Question, sorry.
  110. Bass amp tech Q
  111. Volume drops, farting
  112. Tube question
  113. Dumb speaker wire question
  114. Bass pot "Pops"
  115. Amp guts pictures
  116. Dead Reverb on SF Princeton, troubleshooting tips?
  117. ? What's the difference btw bandmaster and vibroverb circuitry ?
  118. Treble Pot taper - Fender expert needed
  119. Output Transformer Placement
  120. Can you do this with a speaker cab?
  121. Have I done permanent damage to my plexi?
  122. When to change tubes?
  123. Parallel Wiring Question
  124. Bias Points for Custom Twin (15) RI
  125. Should you REALLY pull 2 of 4 power tubes?
  126. Fender BF Channels the same w/out bright cap
  127. mesa parts
  128. Princeton Reverb transformer code
  129. Power Tube quickie
  130. Amp power cord question?
  131. 'Broken' speakers?
  132. ohm question
  133. Traynor YSR-1 Question
  134. Help with chasis installation
  135. Histroric tube prices?
  136. Bias Probes--Do they really wear out?
  137. power tube question
  138. tube dissipation - am i getting this right???
  139. Reissue TS 5881 vs TAD6L6short vs JAN 6L6WGB
  140. 'tapped output' - what exactly is it?
  141. Blown speaker?
  142. Any cool Jcm 900 or Carvin MTS 3200 Mods
  143. Music Man HD130 Power Tube Question
  144. Marshall amp Tech Help...
  145. Did I get robbed... Mike KCA or Lord Valve...tube question??
  146. Where do I get good filter caps for my '68 Fender Twin Reverb?
  147. KT66's or 5881's?
  148. ENGL Savage 120 needs help
  149. Ac Voltage
  150. Where's the cheapest place to get Tolex, 15" drivers & misc hardware?
  151. Can OD/Boost screw up the amp?
  152. 6L6 Tube question
  153. A choke to tighten bass?
  154. Speaker construction question out of curiosity only
  155. 6SH7 for Matchless Clubman
  156. who can tell me about 5U4Gs?
  157. Tube Holders w/ YJ's
  158. Sovtek 5881WXT Equivalents?
  159. To Bias, or Not to Bias... Thanks Mesa!
  160. Custom Audio OD-100 FX Loop noise ..Help!
  161. Screwdriver Tip/Style/Size for RI Custom Twin BIAS
  162. Marshall Lead 100 Model 3210 Volume loss Help!
  163. Need help with a Mesa 4x12 cab / wiring
  164. Eden Metro not putting out the volume...
  165. Gain Stage Feedback Loop
  166. Larger dust caps for G12H-30's?
  167. reverb tank bags??
  168. in search of good current production 12AT7 tube
  169. Tungsram ECC808?
  170. Stupid question.....
  171. Fender Vibratone / Leslie 16 question
  172. Strange overtones on Low E notes
  173. Strange Metallic Whistle in Rivera (sample)
  174. Strange Champ Phenomenon
  175. Power tube matching...??
  176. 70's Princeton Reverb Dead- Please Help!
  177. Loud, high-pitched buzz from my Bassman
  178. Harvard Tweed
  179. Contact Cleaner
  180. DEAD Princeton Update need advice.
  181. Noisy Budda Verbmaster
  182. Need help reading schematic
  183. Question - 6550s?
  184. My Music Man RD112 Fifty Bit Me!
  185. Adding ext. cab to Princeton...ohm question
  186. Balanced triode?
  187. Exploding Capacitor
  188. Weird fizzy sound...
  189. Reverb diagnostic?
  190. Traynor YCV20 WR (15 watt EL84) problem
  191. Replacing the tubes on a 70s SVT
  192. Variable Negative Feedback Control.
  193. Changing tubes (help)
  194. Tube question - opinions
  195. resistor wattage - need help
  196. Anyone ever switch speaker wiring for a tonal change?
  197. Filliment hum on cathode follower tube question ??
  198. No sound coming out of a tube amp?
  199. What speakers best resemble a Fender Twins?
  200. Transformers and rust
  201. SF Vibrolux - Normal Channel - any mods suggestions?
  202. Please help me make my Mesa 50/50 accept EL-34s
  203. 4/16 ohm switch
  204. Marshall Circuits 101 - Non-MV Models 1959,1987,...
  205. More Marshall Wierdness-John, Guys Help Please
  206. Laney GH50L additional bias control?l
  207. Anyone repair/calibrate TV-7D/U tube testers?
  208. Help: M/V on a '75 JMP 100
  209. Need more clarity in bottom end... HELP
  210. The Riddle of Tone
  211. v1 location
  212. Strange Bogner amp footswitch problem
  213. cathode follower vs. plate fed tone stack?
  214. Komet 60 tube type question?
  215. Finding a push/pull pot
  216. question on bias probes and differnces....
  217. Tube qualities for PI...?
  218. Tube Light Emittance...
  219. Blackplate tube poppin
  220. Need Power Tube Information
  221. Going NOS w/hayseed on limited budget
  222. Wiring plexi input jacks
  223. Tech Q re one of a pair of power tubes...
  224. fuchs internal gain trim
  225. Ohmage Issue
  226. xicon vs sprague caps
  227. screen grid resistors?
  228. 6SC7, 6SJ7 info needed
  229. 50w Plexi Clone build complete
  230. Chassis Holes - Sizes?? Punch, Saw, or Drill?
  231. Butane Soldering Irons?
  232. How does voltage affect tone? ODS 30
  233. Need to build one of these...help with a schematic/layout?
  234. Peavey Classic 30 reverb tank hum
  235. reconmend me a good soldering iron
  236. Which digital multimeter for biasing amps?
  237. installing a bias pot in a pro jr.
  238. New Tung-Sol 5881's sub for 6L6GC's?
  239. Okay...what the heck is an overtone???
  240. help: old amp buzzz a.k.a.- a good tech in Seattle
  241. D*mble kits?
  242. hum problem
  243. Koch issue - What do you guys think
  244. How much EL34 bias mismatch is acceptable?
  245. is my amp modded or is sumthing wrong
  246. l-pad also need inductor?
  247. EL84's ma Draw Question.
  248. Mullard Re-issues
  249. NOS RCA/TRW Caps.. what're they made of?
  250. Transformer question