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View Full Version : Amp Technical Info


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  1. Pre-amp fixed biased. Anyone else do it this way ?
  2. My rig is quiet
  3. Boogie Mark chassis material?
  4. Why would a modern 3 prong power cord amp have a ground switch?
  5. Question on Weber Bias Rite...
  6. 5E3 and 6L6WGB
  7. Mesa died! Fuse?
  8. Interesting Variac Idea- Toroidal? Rackmount?
  9. 6dj8?
  10. Goop! Electrical 12V DIY question
  11. SF Vibrolux tube question
  12. Jj Ecc 832
  13. Biasing questions (hopefully simple . . .)
  14. 1974 Deluxe Reverb Noise Question
  15. Got vintage Tung-Sol made 7581A/6L6GC???
  16. Converting my 2/10 Fender Prosonic to a 1/12
  17. Custom amp build - advice sought
  18. I'm looking for a Deluxe Reverb Reissue schematic???
  19. Voice of Music Model 165 vintage amp
  20. deluxe reverb
  21. help identifying a 12ax7 tube
  22. Peavey classic 50 reverb problem
  23. Pot froze up and lubricated to free up any consequences?
  24. SS Rectifier in an AC30 style amp? Anyone?
  25. Weber amp kits... flexibility?
  26. rust on output transformer?
  27. airliner hifi amp
  28. Check those new filter caps, guys
  29. New Amp! Sounds great but a little dark.
  30. Vibro Champ Power Section
  31. Fender 65 Princeton Resissue Mods
  32. Solid State Amp Troubles -- Ampeg SS-70 cutting in and out
  33. Gibson Falcon Reverb Problems
  34. Ghosting? what if it's not the Filter Caps or Grounding?
  35. 4 ohm amp in 8 ohm speaker?
  36. 36w amp build, what trannies should i use.
  37. Different ohm tap, different sound?
  38. NOS GE 6V6GT Plate Voltage in my SE homebrew is 425v... too high?
  39. Hotplate ohms
  40. Rivera M100 Footswitch
  41. Tubes for Tone King Comet 40A
  42. Tube amp dies on stage...
  43. amp screws w/grommets
  44. Custom Kraft 600 amp info needed "pics"
  45. weber bias rite ?
  46. Another mismatched impedance thread: KT66s in an old 50 watt plexi
  47. Amplifier repair reading material??
  48. Low Impedence to High Impedence Jack Question
  49. Which layout is the right one? Lightning Clone.
  50. Will a 20w speaker be okay in a 50w amp?
  51. Pulling my hair out over here...any ideas??!!
  52. Filter cap replacement question
  53. lower gain reverb driver?
  54. How to Blackface a Dual Showman with Master Volume
  55. Adding a footswitchable solo boost to a Mesa Rectifier 2 channel?
  56. Splitting Signal for wet/dry setup...suggestions needed
  57. HiWatt DR103 layout?
  58. bias cap question
  59. Deluxe Reverb Clone - Vibrato problem
  60. adding a sag resistor to a SS rectified amp - sound nice?
  61. Cap value range and the compensating for hard to find values question.
  62. how to properly drain filter caps in AC15cc1x
  63. Silvertone 1434 4x6L6 Dual OTs advice on tweaks
  64. Blues Jr - removed neg feedback wire... any problems?
  65. Ever seen a Mullard GZ34 without a hole in the key?
  66. anybody try the GT 6L6 CHP blackplate yet?
  67. running only half the power on tube amp question
  68. Weber 18 watt clone questions
  69. Would this be a cap issue?
  70. Touching Glass? (Tubes that is...)
  71. How close should power tubes match up?
  72. Adding a TUBE Phase Inverter
  73. tubeworks td-742 problem
  74. Let's talk about 5E7 tweed bandmaster output transformers
  75. Thump on standby
  76. Blackface 6L6 to EL34 mod conversion--need a resistor value
  77. replacement 3 prong hum..
  78. Wierd runaway volume issue tonight!
  79. Allen Brown Suger - help needed
  80. Connecting 2 cabs in series?
  81. Can I use these tubes?
  82. Need help with removing Speakers
  83. Mesa Lonestar Problems!
  84. How to test caps for leakage
  85. Vibro Champ troubles
  86. Semi-Hollow guitars and amps
  87. who makes AB763 replacement boards for fender amps?
  88. What's your experience with...
  89. "Low E Fart" on Twin Reverb
  90. Any thoughts on Mojo Dijon or Vitamin T caps?
  91. Fender Bassman 6G6-B Layout
  92. How does Master Volume work comp'd to Attenuation?
  93. BF circuit coupling cap to PI
  94. Cab Wiring: switch for two or one speaker, 8 or 4 Ohms - question
  95. Hooking a 16ohm cab to my Ecstasy
  96. Danelectro DM-25 Thread
  97. What new cap is best for replacing astrons
  98. 100 watt marshall into 80 watt cab
  99. 80's Fendert Concert Bias change. (Rivera)
  100. Type of Alnico used in Speakers? II, V?
  101. SPL Calculator.
  102. Using 12AX7 as phase inverter in '74 DR
  103. Help Identifying 12AX7A tubes.
  104. C-Gold--LSC
  105. Hot Rod Deluxe - help me with tubes, speaker, etc.
  106. Forming Filter Caps with a Variac... Yes or No?
  107. Anyone sell tweed era Fender logos that don't cost a small fortune?
  108. AC30CCH Choke
  109. Fast or Slo Blow?
  110. New York Metro area amp tech
  111. Tampa Fl Area Amp Techs
  112. KT77 match power tube?
  113. Question re removing power tubes to reduce power
  114. Guitar Cab speaker wire?
  115. BF Deluxe Reverb Clone
  116. FenderRivera Era Effects Loops
  117. Very simple question about a DPDT slide switch
  118. Tube amp repair, or how not to electrocute myself?
  119. Reissue Tung-Sol 5881 Volt question
  120. HELP please!!!
  121. Vibro Champ caps
  122. 456v Plates... Enough for 5881s?
  123. Marshall Experts- What's the deal with ____?
  124. Attenuators and Bassman RI's
  125. 65 Fender BF help!
  126. Tweed Bandmaster OPT recommendation
  127. JTM-45 clone bias
  128. deluxe reverb or any of its clones
  129. DRRI Bias check with multimeter?
  130. AC30CCH Choke - FREE
  131. Any Ideas Fellas?
  132. A Phoenix is born (out of a Carvin amp)....
  133. Removing Grill on Fender Concert II
  134. I think my amp is biased too hot
  135. Help - large pop when flipping standby switch
  136. Tfl5000d
  137. Two Amps one guitar.
  138. Output Transformer Question
  139. messed up my traynor ycv40
  140. Bandmaster extreme drop in volume.
  141. Weird stuttering feedback at high volume
  142. Doing some repairs to my old Laney AOR30...capacitor questions
  143. How do I find out the wattage ouput of my homebuild?
  144. nasty 120Hz hum & scope trace question
  145. Hellatone 30 with ???? 212 cab with Bogner Ecstasy head
  146. Vibro Champ Mods
  147. What's the op amp do on the Circuit board on my amp?
  148. Harsh at louder volumes???
  149. Cool vintage parts ebay score!
  150. SOZO Vintage Caps, Hype Time!
  151. Peavey Classic-30 woes. . please help!
  152. Help in Selecting Proper Parts for Reconing a V30
  153. Epipy SoCal Reverb
  154. Do you Risk Damaging your amp by using an attenuator?
  155. Have you ever tried this mod?
  156. Switching cabs while in standby
  157. how much power...
  158. 5881 High Voltage Update!
  159. 2x10 tremolux cab
  160. 1968 Bandmaster Makeover AB765
  161. Mixing Cap Brands
  162. Is this an acceptable way of replacing big caps..?
  163. Marshall Super Bass does something strange
  164. need advice: simple SE amp tone improvements
  165. How to tighten tube sockets?
  166. Please help settle this transformer question
  167. Super Reverb Cab Question
  168. Where To Find The Following Caps...
  169. '66 SUPER REVERB BF changing power tubes
  170. PT question
  171. Preamp Tube Identification - Help !
  172. Quick question on fuses
  173. :::Pre Amp Out - Power Amp In Question:::
  174. Bad Tube???
  175. Treble cap changes & Gain/Tone change
  176. Adding a LED to a Marshall footswitch
  177. Fender Champion 600 problem help?
  178. Vintage Fender Amp Logo Paint?
  179. Modding a Bassman 100
  180. 2nd Gain Stage NFB in Early 35w Tweed Amps
  181. Amp builders/techs....need some assistance
  182. Are big filter caps suppose to discharge so quickly? (schematics in)
  183. Ohms load with multiple cabs
  184. Fender Blackface Breakup Q's
  185. Help! Shiva Problems!
  186. Oddball transition Tweed Deluxe---anyone seen this before?
  187. Did moving cause my hum/buzz?
  188. A few Laney Issues/Woes
  189. Telefunken ECC81/12AT7
  190. Where to buy Heyboers?
  191. EL34 identification
  192. Adding Reverb
  193. The final steps in the laney's repairs, biasing: 10W per 6V6s ok?
  194. Made the local Feedback Switchable... question:
  195. Help with SS Ampeg Head trouble....
  196. Earth problem in Guitar cause problems in Amp?
  197. is speaker cone-cry temperature dependent?
  198. 1940's Amp ID Help
  199. help with misbehaving bassman RI Ltd.
  200. what difference does dope make
  201. Help with ValveKing 212
  202. Fender tweeds - why short the secondary...
  203. Bad Sounding Plexi
  204. need amp tech ann arbor/detroit
  205. Orange won't turn on! Help!
  206. Mojo769 hookup
  207. More presence out of the presence control...
  208. Blues Jr-replacement tubes
  209. Super Reverb hiss
  210. New Production 6L6gc with largest pins?
  211. Power supply Question/Deluxe Reverb
  212. troubleshooting Fender FM 212R Guitar amp- It's a kid's amp
  213. Plate Voltage eluding me !
  214. Fender Studio Bass Amp Volume Question
  215. Vox Custom Classic series amps/ changing speaker question
  216. Amp Bulb
  217. International 12AX7?
  218. Early Breakup on '95 Blues Deville
  219. 12AX7 DRRI question
  220. Variac question
  221. 6L6 tubes in a Deluxe Reverb
  222. bad cat trouble
  223. Matched quad = 2 pairs w/ same bias point?
  224. Blown vellocette transformer
  225. Broken Trace (Pics!)
  226. Dying OR120
  227. Suggestions for 65 Fender Champ Tubes to try
  228. Broken Hiwatt... Suggestions?
  229. So if you have an amp with 8 ohm and 4 ohm out can you use both?
  230. bad power in practice space
  231. One tube getting REALLY hot!
  232. Power tubes, help!!!
  233. 16 ohm minimum impedence question
  234. individual bias pots for each power tube
  235. Tweed Champ Has No Top End
  236. Ampeg Gemini sounds like a ring modulator
  237. really bright gibson skylark
  238. Output transformer & Rectifier Tube Question
  239. Quick dumb question about wattage
  240. Do you really need to bias your tubes?
  241. Shunting highs: What's your favorite approach
  242. So if I'm already faced with the issue of old wiring... (2 prong to 3)
  243. Bias Monitoring Question
  244. Reverb send & receive as an effects loop
  245. Vitamin T caps in Fender circuit?
  246. FX loop
  247. AC15 Heritage
  248. Help - Blowing Fuses!
  249. Best way to install adjustable bias in 5E7 bandmaster?
  250. Bias on a 93 Blues DeVille