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. Amp Tech near Chicago? For SF Fenders
  2. Removing Tubes in a Twin Reverb
  3. 50's Gibson GA6 60 watts?
  4. Help with JTM-45 impedance questions...
  5. UPS strikes again, can I fix this?
  6. where to find exact Accutronics reverb tank?
  7. Mercury Magnetics OT in 59 RI?
  8. Gibson Ga20t Grid Leak Bias-change It?
  9. What is done when an amp is "BALCKFACED"?
  10. Amp buzzing...
  11. Half-wave Diode Recitifer
  12. time for a recap?
  13. I just got a DRRI - what mods can/should be done
  14. /13 cabinet hookup question
  15. Bias Test points on a stock DRRI?
  16. fender concert II ?
  17. Speaker cable question
  18. Help me set the bias on my Fuchs...
  19. Opinions on replacing Choke
  20. Vibrolux Reverb Filter Caps
  21. Fuse blown, replaced rect tube as advised and
  22. buzzing problem
  23. what's happening to my amps?
  24. 62 Bassman Replacement OT
  25. Signal cap Polarity in Blkface Fenders?
  26. Orange Drops in old Marshalls
  27. Ei 12AX7 variant
  28. Tube ID - 12AX7s
  29. Help! Stokes mod in process!
  30. what's the high and low DC ampres (bias adjustment) for EH 6V6 tubes
  31. RCA Black Plate 6BQ5/EL84 What can you tell me?
  32. SF Princeton Reverb questions?
  33. tubes recomantation for rivera quiana
  34. Strange ringing from amp...help!
  35. Amp settings, low vol vs high vol...
  36. Request: Clear layout for the AA846...
  37. Cathode Resistor Values
  38. 5963?
  39. Cathode resistor...
  40. Swapping 6550s for 6L6s?
  41. 6L6 vs KT66 vs 5881 in same amp....general differences?
  42. Biasing ??? Help.
  43. quick question on bias readings
  44. Marshall 4140 Footswitch
  45. What's a good Rectifier for a Princeton Reverb?
  46. Bypass Cap switch
  47. Adding reverb to the Normal channel on a DRRI?
  48. Radio Spares De-Luxe Output Transformer (JTM45, Vox) on Ebay right now
  49. Sparks in el-34 under load?
  50. Matched pairs/quads
  51. Bought an old PA tube amp that...
  52. Monster Speaker Cable???
  53. Can I change the filter caps in my JTM45RI myself?
  54. Question about 100 watt Marshall... heat!
  55. Princeton Reverb re-tube and bias
  56. pilot lamp question
  57. London Power power scaling kits
  58. Amp Squealing. Why?
  59. Question on Biasing
  60. Van Halen 1 Old Sound Which New Production El34
  61. Matching up the Princeton PI
  62. Carbon comp resistors
  63. Scrapping a Hammond-Questions
  64. EL84's
  65. Converting AC Filamenta to DC Filaments
  66. Changing OT transformer from US to UK - safe?
  67. Re-wiring input jack
  68. Hadaway mod for Peavey?
  69. How much will a speaker swap affect tone?
  70. How do I take the grills off a DRRI and a Budda combo
  71. I need a picture of the location of the Treble Cap solder points on a DRRI Please?
  72. Speaker impedence question?
  73. Amp tipped over in truck: no reverb!
  74. Amp Running Hot
  75. Reverse Engineering... questions about amp design
  76. Why do Marshalls have bigger caps?
  77. Biasing
  78. el34 to kt66
  79. Building a Lightweight Tube Amp
  80. 5e5a intermittent sound
  81. Might have a rectifier tube problem?
  82. Leslie 215
  83. weber amp kits
  84. Does anyone besides Allen do a Bassman conversion like this?
  85. Ohms, Speaker Cabinet Question
  86. Adding a "Bright" cap
  87. Preamp Tube Function(s) - Does This Sound Right?
  88. Measuring Output power using a scope
  89. Installing casters
  90. AB763 - Effects Loop?
  91. 8 diode rectifier
  92. Blackfacing A Silver Fender
  93. Attenuator and two cabs?
  94. Laney AOR resistor question
  95. When my TC. Vintage delay is in my effects-loop.....
  96. Bias an amp using Weber Bias Rite or BiasProbe??
  97. My Failed Attempt at Shellac'ing
  98. Removing a speaker bell?
  99. Victoria speaker recommendations
  100. HELP...weird noise with my mesa dual rectifier....
  101. Small fan for amp
  102. Failed Shellac'ing Part II
  103. Amp Hum - Are musicians being screwed?
  104. Marshall 'Pig'
  105. I found what appear to be RCA 6CA7s...
  106. Attenuator question ( need help)
  107. Speaker ohm question
  108. JTM 45 Build Caps
  109. 70's bassman head problem
  110. Another voltage regulator question...
  111. Different Xformers-Different Tone?
  112. can a amp going bad fry EMGs or vice versa?
  113. Weakness for my Princeton
  114. Cap job on a vintage 64 Princeton Reverb
  115. I left my Dual Recto on for 5 days!
  116. Decibel Question
  117. Can amps affect preamp tube microphonics ?
  118. carbon comp vs. metal oxide???????
  119. Amp Screeches on High Notes! Help!
  120. Question on rewiring speakers in an AC30 CC2
  121. Sub a 12AT7 in the PI?
  122. Is this speaker wiring correct?
  123. '62 Ampeg Reverberocket - Fixed or Cathode biased?
  124. Rectifier tube issues
  125. Help me revive an old Traynor YGM3!
  126. Does anyone know a top Australian amp tech to work on my komet?
  127. Ampe SB-12 breaking up in a bad way
  128. Crate VC3112 - Pulling Tubes or Half Power?
  129. Head-cab wattage help:)
  130. Dead amp
  131. Hairline crack in a preamp tube
  132. Tubes For A Lucky 7
  133. Fender Capricorn / Two questions
  134. How to tell if your amp is Class A???
  135. GT12ax7M
  136. Useful mods for 71 SF Deluxe Reverb?
  137. Would like to know about TSL 100 bias !!!
  138. I....Must...Build...a....JTM45...
  139. master volume twin
  140. Here is what I did with 3 speakers, do I have 16 ohms??
  141. Marshall 1987x to 2100 lead/bass conversion?
  142. fx Loop on Marshall JCM800 not working?
  143. JTM45 problems, suggestions?
  144. Help me bias my '79 JMP 50 MV
  145. 2 sets of tilt back legs
  146. Super Reverb/ JTM 45
  147. Anyone who knows how amps work please come in and solve this problem!!
  148. Alamo reverb unit schematics
  149. Another vintage Fender amp impedence question.
  150. juice up a silvertone 1484?
  151. hello! i'm new and need help!! PLEASE!!
  152. Blown output tranny?
  153. A couple Bandmaster head questions for the experts!
  154. SFVR Normal Channel Tone Stack Bypass question.
  155. preamp tubes combination in my Marshall...
  156. Ei 12ax7 reliability, any good or worth the risk?
  157. 5E3 tweed Deluxe/12AX7 question
  158. Tube life question
  159. help troubleshooting a tube amp.....
  160. OHM's
  161. Traynor YSR-1 Headroom?
  162. Suggestions - Headphones for late night playing...
  163. Matching Power Tubes Question
  164. Impedance checking question
  165. Please Enlighten Me On The 5751...
  166. 7591A: EH vs JJ vs NOS?
  167. Amp Repair
  168. Amp - unwanted brittle noise
  169. Question for the amp pro's (need help w/ question)
  170. Amp repair near Wilkes Barre/Scranton, PA
  171. Marshall Lead MV MkII 50W PT
  172. Ei etch code interpretation?
  173. Grill cloth questions...
  174. Need Cap Cover for Piggyback Bassman
  175. Gemini II died?
  176. What's the tonal difference between a 12AX7 & 12AY7?
  177. About ready to bias - Troubleshooting?
  178. What am I doing to my sound by using 5881s?
  179. SFPR to BFDR specs
  180. Ceriatone 5E3
  181. Gemini GV-22 - loud pop, now the thing sounds very quiet when playing
  182. Whats the formula for setting Bias?
  183. Adding headphone jack
  184. Solder/Desolder Station?
  185. Rectifier tube in '71 Princeton?
  186. How hot do you like your tubes?
  187. Head shell - metal shielding...
  188. AC30 help
  189. Fender Amp Treble Pots
  190. Source for 6C10 tubes at a sensible price
  191. Weber Trannies
  192. Changing Speakers
  193. 1974x power tranny replaced not good
  194. myles111 - tube question...
  195. Taking apart a Marhsall 4140 combo
  196. Marshall JTM 60 problems
  197. Deteriorating Speakers
  198. Preamp Tubes - to crackle or not crackle
  199. Which has more effect on changing the sound of an amp...tubes or speakers?
  200. do you guys know anything about tube echoplexes?
  201. GE long plate 12AX7 differences.
  202. 65 Deluxe Reverb Mod - Time / Cost
  203. "what tube is this" volume 9765432
  204. Replacing solid state rectifier with Weber Copper Cap
  205. which fender tweed to build??
  206. Jjecc83s Vs Jjecc803s
  207. Did I break my fluke?
  208. Amp Noise
  209. Speaker Ohm Ratings?
  210. First big mistake!
  211. THD Flexi 50 - Multi-meter question
  212. Converting a Superlead to Superbass specs
  213. Fender Bandmaster Date Code
  214. Traynor YBA-1 channel jumpering question
  215. Princeton Reverb 2
  216. Power Scaling...Best Candidate
  217. 12DW7 Preamp Tube - Where Would You Use It?
  218. 12 Ga. Romex in speaker cab. Don't do it!
  219. Variac vs. Dimmer
  220. Best way to keep amps that get little use?
  221. Fender The Twin
  222. Super Reverb Vibrato doesn't work
  223. Zappage!
  224. What preamp tubes for my DRRI
  225. Bias mA values for 6550s in marshalls?
  226. DrZ Maz Crackling
  227. Talk To Me About Shuguang Tubes
  228. maintaining an old echoplex motor
  229. Turning a combo into a head and cab...
  230. Did I get the right multimeter to bias my Allen Old Flame?
  231. My Weller iron gets too hot!
  232. musicmaster bass amp mod from torres... opninions?
  233. Warped speaker frame question
  234. Tubes in the RI Marshall Bluesbreaker
  235. GT 6CA7-sound better than they look
  236. Removing tubes?
  237. 6SN7GBT Question
  238. Victorilux tremolo
  239. AMP TECHS... (question)
  240. Tube reviews or rankings ??
  241. Airbrake tips
  242. Ge 6l6gc ?
  243. Both my amps crapped out this week - suggestions appreciated
  244. Lead free solder for RoHS
  245. Tube Springs? Those little springs to help hold em' in...
  246. 1959 Siemens VS 1958 Mullard...
  247. suping up an hold supro - hints?
  248. Help with a Crate VC30 project.
  249. Turning A Gain Control Into A Volume?
  250. Fender Amp - Neutral EQ Setting?