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View Full Version : Amp Technical Info

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  1. 100 watt head into a 50 watt 1x10 speaker?
  2. Tools / Process for Rebiasing DRRI
  3. Any love for the ampeg jt-12?
  4. Can anyone tell me what kind of amp this is?
  5. Installing a Speaker and F/S Jack on a Fender Champ 12
  6. using fender amp ground switch as impedance selector
  7. 125DSE and 269EX transformer set lying around
  8. "Life Test" on Used Tubes
  9. Amp repair shop...necessary tools?
  10. What speakers are these?
  11. Laney ProTube AOR extremely farty on low end..HALP!
  12. Tube Rectifier v. SS rectifier and clean headroom? (TopHat content)
  13. 64 vibroverb custom fuse
  14. Amp conversion
  15. Vox AD15VT Problem
  16. Is there a proper way to ground out a solid state before servicing
  17. Which Oscilloscope and signal generator???
  18. Which tube is my tremolo tube? diagram included
  19. Does this amp ever need biasing? Diagram included.
  20. Replacing Orange Tiny Terror Tubes
  21. efficieny of a 4ohm speaker vs 8 ohm speaker
  22. Princeton Reverb Reissue circuit?
  23. Need a bit of direction...
  24. 7591 info?
  25. Bogner Shiva. # of gain stages
  26. Tech. info on pedal?...fuzz face
  27. SF Princeton problem
  28. Will that fuse eventually go out?
  29. Which rectifiers are designed for 3 amps?
  30. Vox AC15CC - Higher current mains fuse?
  31. what resistor do you add to stop "ticking" on tremolo FX fender amps
  32. Mesa Express 5:50 112 rattle at high master vol settings
  33. SO, what happens if I don't have the bias adjusted?
  34. KT88 and 6550, what max. dissipation?
  35. Help! Problem with amp!
  36. It's time for new tubes when....
  37. 1/4" jacks--Open or closed circuit???
  38. Using 400v cap instead 600v ... repercussions?
  39. Princeton Reverb Problem
  40. Amp Popping sounds
  41. Can someone explain, in dummy terms, what effect a 12AX7 has on the tonestack?
  42. What are the symptoms of an amp needing a cap job?
  43. 1971 Super Reverb technical journey...
  44. Biasing an Orange or80m
  45. Help, Smoked My Transformer
  46. Anyone know how to use a voltmeter?
  47. Push Pull Question
  48. Ground Lifts - Dangerous to Use?
  49. Space heaters versus my amp
  50. High pitch squeel
  51. Amp Tremolo
  52. practice space, voltage regulator?
  53. ok... I've been in here before with this sucker... rectifier questions...
  54. Is it possible to fix an Accutronics reverb tank?
  55. 6SC7 tubes - anyone have a good source for non-microphonic examples?
  56. Bias fender blues deluxe RI question
  57. Hughes and Kettner amp pre amp info
  58. Amp tech/repair in Reno, Tahoe,Truckee, Sacramento, or Bay Area?
  59. Are reverb tanks interchangable?
  60. VOLUME AND BASS LOSS.changed imput jacks.my tech said power tubes are ok
  61. Question about Speaker db’s and math …?
  62. Marshall 6100 bias adjustment?
  63. Amp Knob Replacement (Two-Rock Knobs)
  64. Finding the mA in a device?
  65. type of solder to use in amplifier work?
  66. who makes this power supply transformer ?
  67. What's a good 6V6 tube?
  68. Amp Speaker Cable Question
  69. Changing tubes in Crate V18, V33, V50
  70. Do all mullards flash at startup?
  71. Narrow Panel Tweed Deluxe Output Transformer ????
  72. Mods for Crate VC 20 (Old Vintage Clubs)
  73. mechanical rattle when firing up old amp
  74. a slightly different filter cap discharge question
  75. Removing resistor at input on master vol models???
  76. Help! I need speaker advice for a Super Reverb
  77. Tales of Twin Hackery...
  78. First amp, need tube ID help
  79. triode mode vs. pentode mode
  80. Adding additional speaker output jacks question
  81. jcm 2000 dsl blowing fuses
  82. blackstar HT-5 volume issue?
  83. Single rectifier problem
  84. Ohms Mismatch
  85. Are you experienced with NOS tubes?
  86. Can't figure out this resistor
  87. I'm at my wit's end!!! Part search...
  88. another bias question
  89. Crate Vintage Club 30 Speaker Advice
  90. Help with Naylor amp needed.
  91. Yet another Phase Inverter Tube Q
  92. Can I identify a bad tube by looking at it?
  93. Does my amp need a retube(Marshall)??
  94. 2203kk schematic
  95. Need Brown Princeton cabinet dimensions
  96. Good book on amp circuits
  97. Got a nasty distorted sound on top of every note...
  98. I can't wait to cut one of these open
  99. Harp player wants me to re-work his amplifier - circuit suggestions sought
  100. Orange OR80 chassis hardware?
  101. Mullard 12AT7 - CV4004 vs. CV4024
  102. Asian Engineer???
  103. Odd Ghost Notes - Bad Filter Cap?
  104. Blues Jr Tube Swap? What Sounds Good??
  105. What could cause this strange noise?
  106. Plate Voltages
  107. Amp killed my pickup?
  108. Bias switch on AC30CC
  109. This is why you don't replace a fuse with one of a higher value.
  110. 6G2 Princeton Speaker Recommendation
  111. Tube tester repair?
  112. reverb tank is more sensitive to vibration than most I've seen
  113. Which 6SJ7 tube?
  114. Replacing a Marshall preamp tube socket.....
  115. Which tubes to pull?
  116. My vintage Mullard 12ax7 is microphonic. Any hope?
  117. Gain Structure 101: Now Showing in Amps and Cabs
  118. Voltage Switch
  119. Pulling 2 x power tubes plus UA ?
  120. musicmaster circuit help?
  121. Adding a bright cap...what size?
  122. Issue with Divided by 13 LDW
  123. Boogie Tube Placement
  124. EL34's.....
  125. Nomad 55 Reverb not working
  126. Anyone familiar with the Fender Yale Reverb circuit?
  127. Forgetting to connect amp to speakers.
  128. Cutting cone from speaker to use as a dummy load possible?
  129. Should I avoid using a 100 watt attenuator w/ a 20 watt amp?
  130. Help: Tube Identification
  131. static.....tubes??
  132. Does anyone have experience with the Iron Sounds fx loop kit?
  133. peavey classic 50...
  134. Pittbull 45 loop question...
  135. Ampeg Gemini I reverb issue
  136. Soldering Question
  137. proper height for a vibroclone cab is ???
  138. 5E6A versus 5E8A Narrow Panel Low Power Twin and 2 Hole Bassman
  139. Do Super Reverbs and Vibroverbs have the same guts?
  140. Super Champ seeing 2ohm load?
  141. twin reverb silverface 135 mod...again:)
  142. Speaker hiss in overdrive channel
  143. power transformer correct?
  144. 5ar4 Rectifiers....which new production tubes are decent?
  145. Big disparity in 6v6 current draw...
  146. Does Power Tube Vibration Contribute to "Tone"?
  147. Tonestack/Hiwatt: "Old" VS New
  148. Could Someone Please Explain..
  149. Bad Cat Hot Cat 15```
  150. WTB/Looking for 1M-LOG Push/Pull-Pot DPDT Mastervolume in Fenders (01154
  151. 1st generation Jensen neo vs. 2nd generation - how can you tell?
  152. Can anyone help me identify these tubes?
  153. Rivera knucklehead... Please help me.......
  154. 1982 Fender Pro Reverb - Vibrato not working
  155. Carvin V3 tube replacement
  156. Groove Tubes GT6L6GE opinions?
  157. Clark Beauford makes strange noise
  158. Start-up noises on my blues jr...
  159. PCB Design Grounding
  160. All the noise noise noise
  161. Hum X?
  162. HELP! Weird distortion.....Sometimes...???
  163. No Breakup and seemingly low plate voltage
  164. peavey classic 50 212 with celestion gold and hellatone 30
  165. how to add reverb to a Fender "Normal "channel
  166. Question on attenuating a small signal
  167. crate palomino v32 - tube/speaker swap?
  168. Funny Speaker noise... help?
  169. Just another wacky Tube issue (challange)
  170. VC20 speaker swap
  171. Heritage amp owners...
  172. Strange Problem--Sovtek MIG50
  173. Triple Rec Problem
  174. What could have went wrong with replacing a tube socket?????
  175. 3.5A Fuse?
  176. tubes and speakers for HRD
  177. How do you Metal Scoop an Amp?
  178. which tubes to replace, where, and why
  179. Tremolo "Roach" circuit info.
  180. Help with biasing '57 Tweed Twin RI?
  181. Amp Has Volume Issue
  182. what caps are closest in sound/feel to old mallory blue 60's caps?
  183. Blues junior reverb fail need urgent help thanks
  184. Which reverb pan in silverface Twin?
  185. know of any interesting fender reverb circuit tone mods?
  186. HELP!! Schem. JMF Spectra 60T
  187. Deluxe Reverb with 6L6s ?
  188. Noisy Vox AC15CC
  189. Traynor ysr-1 1967-1969 questions
  190. Question for Myles: GT 12AT7 and 12AY7
  191. Link for making a new grill?
  192. Do I need to bias my Blues Junior when replacing the power tubes?
  193. Help, Vicky 20112 no sound!?!
  194. Problem with California Blonde - HELP!
  195. 1965-1967 Pro Reverb Chassis material ??
  196. Marshall 6100 Blue Tolex - Intermittent Buzz
  197. Egnater Mod 50 problems
  198. Ampeg B25B speaker cable
  199. What would the effect be if...
  200. Help modifying bandmaster for reverb or just for more gain
  201. Color codes for Peavey Delta blues OT???
  202. Re-voicing an amp circuit?
  203. HELP! Amp Question
  204. Purpose of the "fizzy" (PI) cap?..
  205. Where can I get a Marshall logo - ....
  206. ab165 bass channel mod?
  207. Boogie volume loss help
  208. Want more "definition" from wound strings...
  209. What would cause noise to come through the speakers while the amp is on standby?
  210. I keep reading about phase inverters... do microphonics matter?
  211. Transformers for Zinky Mofo/Blue Velvet's
  212. Bassman AB165 Question
  213. Multimeter Advice......
  214. Building New Marshall Silver Jubilee 2555
  215. Another Deluxe Reverb question...
  216. What to build bandmaster ab763... where for chassis and parts?
  217. Mesa Bass Head
  218. Tell me about an "impedance mismatch"?
  219. Rented backline and bias
  220. Neil Young's Rig (Herzog)...Tone Quest Report question.
  221. New 5e3 deluxe clone with hum
  222. Marshall JMP 50 Watt 1979 questions
  223. Combo Cab for Dual Showman Chassis?
  224. Dean markley RM 80 DRM
  225. Mesa Boogie Experts (express5:50)
  226. 5E3 Help
  227. Volume loss and bass increase - Why?
  228. How difficult to change 2 prong?
  229. Do I HAVE to use this footswitch? (Fender Twin Amp)
  230. Matching speaker power to Amp power?
  231. Info on this Mullard?
  232. Modding a Deluxe Reverb to make the normal channel a gain channel?
  233. Ceriatone Kleinulator FX Loop
  234. POLL: channel switching, Abrupt or Gradual?
  235. Caps in my 1963 Gibson ga 8t Discover
  236. Jensen speaker model?
  237. SF Pro Reverb delay before tremolo kicks in
  238. How to handle vacuum tubes? I'm new to this.
  239. "cut" box question
  240. Learning Tube Amp Repair/ Servicing
  241. how do i chek the caps
  242. Boogie Treble Control works 7-10 only
  243. Mesa Maverick Rattle
  244. One powertube lights up bright blue...No sound...Loud hum..
  245. Home built Twin AB 763 Reverb channel Problems.
  246. (Korg) Vox AC15TBX Reverb Problem; Help!
  247. 6V6 Tube ID
  248. Can't reach desired bias setting
  249. VVR in a 5e3 Deluxe?
  250. Tube layout on the Gibson ga 8 t