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 45 46 47

  1. hum - fixed it mostly, but minor idiosyncratic problem remains
  2. 2x12 cab wired at 4, 8 or 16 ohms...any difference tonewise?
  3. Adding "Loop Return" to Amp
  4. Bandmaster 5e7 excessive hum
  5. how to bias a hotrod deluxe
  6. Tools to Troubleshoot an Old Tube Amp???
  7. Putting a PC Fan in Amp: Help Needed
  8. Need help diagnosing a Marshall guys...John Philips?
  9. Acitive effects loop VS. passive
  10. Alright... I'm stumped.
  11. Oil & paper caps?
  12. What's a Marshall Silver Jubilee supposed to look like inside?
  13. AC30cc1 problems...almost no volume from either channel..
  14. SS Rectifier Question...
  15. vintage jensen question
  16. A (Probably Simplistic) Amp Question
  17. Mission amps 5E3 deluxe weirdness!
  18. 72 SF Deluxe Reverb keeps blowing fuse
  19. SFDR: Do 6L6's NEED a SS recto...
  20. what to build 6l6
  21. Weak Reverb in Vibrolux
  22. JCM 900 Question
  23. need help with BIASin' a la Ken Fischer...
  24. Head cab, inside clearance for tubes
  25. Baffle Board: Floating vs Fixed
  26. Would a SFDR w/6L6's, weber cap, and cathode biasn'...
  27. winding specs for a power transformer for an egnater tol 100 head?
  28. What makes a solid state amp sound good?
  29. I need a part for my cab...
  30. how much will a "cap job" affect tone?
  31. ZZZZZZZZ Sound at Power up
  32. EL84's for Crate V3112...
  33. Balanced Triodes?
  34. Hiwatt DR504 adjustable bias?
  35. Okay, here's a REAL super dumb-ass question...
  36. Do these capacitors look OK to you?
  37. Carvin Legacy footswitch help please
  38. Help with part id
  39. Marshall DSL-100 blowing mains fuse
  40. does a SFDR have too much voltage to cathode bias?
  41. Kalamazoo type trem not oscillating
  42. Amp tech in Calgary, Alberta?
  43. Ampeg 7027A Power Tubes Replacement Blues
  44. Hot Rod Deville Probs.
  45. Installing Outputs
  46. Peavey transtube circuit
  47. Princeton Reverb Speaker Impedance Mismatch
  48. kt66, kt77, kt88 - what's the difference?
  49. Audio Taper pots for Blues Deluxe Reissue?
  50. Need help with mid 60's Gibson amp
  51. Speaker cone creasing...
  52. DRRI Problem - Power On, No Output
  53. Sovtek Mig 100 Bias settings??
  54. JCM 800 and the Sovtek 12AX7-LPS
  55. 68 Vibrolux Reverb Recap Caused Reverb Motorboating
  56. Tonal impact of wiring mistake
  57. Would this old Gibson scare you away?
  58. Speaker Stuck to Baffle Board
  59. Output Bias Trem + PPIMV = Problem
  60. One bad speaker, should both be replaced?
  61. silvertone 1471/airline 62-9012 amp mods
  62. Deluxe Reverb RI OT and PT help
  63. Jointed boards on solid pine cabs?
  64. Strange noises from Dual Rectifier...
  65. 67 BF Vibro Champ orig Fender Upgrades ?
  66. 5150 Incredibly Noisy???
  67. Blues Deluxe Gain Mod?
  68. Ampeg VT-40 Help ?
  69. Jensen vs. Weber Specs
  70. Anyone have AxeFx clips w/o effects?
  71. 12ax7 tube ID
  72. help with 4th tube problem (Marshall 1959 100W bias)
  73. Determining an amp's full output wattage
  74. Transformer ID
  75. Tung Sol black plate?
  76. Today is opposite day for my amp...
  77. Grounding a BF Vibro Champ
  78. Amp techs...I need a schematic. Check this out....
  79. Tweed Cabs: What kind of pine?
  80. 12AY7 in V1 of a Marshall 50 ?
  81. Marshall 4140 Help
  82. 5F1 with a tone pot added?
  83. Bacon frying sound in amp at idle...
  84. Old Vox- Wiring Question-
  85. Trem saga. -How to adjust intensity?
  86. Tube order for Fender '64 Vibroverb Custom
  87. Ever re-cone a speaker that wasn't blown?
  88. Noisy Deluxe Reverb
  89. Vibro Champ Biasing
  90. Current EL34's
  91. New Rectifier (GZ34) Do I need to Rebias?
  92. What kind of toggle switch?
  93. Vox AC 30/6 TB re-issue noise problem
  94. What kind of tranny for a simple, active line mixer?
  95. ok, so i had my speaker cab disconnected...
  96. DRRI issue, please help
  97. Adjusting Grid voltage
  98. Great tone, bad hum
  99. Amp "overhaul" and do I need one? ! (Rivera)
  100. How to reverse bright cap mod to a DRRI???
  101. Marshall 2204, Amersican/Canadian Transformer Question
  102. Different Ohm Loads on a Shiva
  103. 68 K or 6.8 K input jack resistors on blackface Deluxe Reverb ?
  104. Has anyone modded
  105. Help -- Buzz (even when amp is off)?
  106. 2 to 3 prong conversion on BF Vibro Champ still need help please
  107. fender vibrosonic reverb - revalving
  108. Repro Princeton Faceplates?
  109. Recommend a bang-for-your-buck 5E3 kit please?
  110. Questions about (passive) Leslie speaker
  111. Impedance for Silvertone 6X10?
  112. Faceplate Restoration
  113. Orbit Electronix Info
  114. How does cathode biasing affect tone?
  115. Ceriatone Plexi 50W problems
  116. Rattling tube covers on Crate Vintage Club
  117. Louisiana amp tech
  118. preamp tube info needed
  119. anyone changed the Transformer on a 64 Vibroverb Custom?
  120. NFB cap instead of resistor? Anyone familiar...
  121. Blew a filter cap need advice or info
  122. Bogner Question
  123. Vibro Champ Mods???
  124. '63 Tremolux - is the original transformer multi-tap?
  125. John Phillips???
  126. Is it worth reconing an old Oxford?
  127. 5150 effects loop question?
  128. series/parallel cab into series OR parallel ext. jack?
  129. '57 Tweed Twin RI vs. Weber 5E8A kit
  130. 4x12 into 2 2x12 cabs
  131. Build quality on new vs. old Peaveys?
  132. Power Amp phase splitter tube question
  133. 6G6 Kit? Studio Outboard Gear Kits?
  134. Transformers v. Rectifier Tube
  135. Tolex for Amp project
  136. amp tech's in ct?
  137. speaker magnet recycling?
  138. EL84 tube rattles at certain FREQ
  139. What's your favorite new production 5AR4/GZ34?
  140. What circuit revision for '79 pro reverb? And some gut shots
  141. NOS tube issues in Dr. Z z28
  142. Solid Core vs Stranded?
  143. Tube porn
  144. HUM in a newer Marshall JCM 2000 (or is it DSL)
  145. 4 tubes, then 2 tubes, then 1 tube
  146. tube amp troubles
  147. Power Tubes in Old Gibson Skylark
  148. Red Plate Special
  149. 1972 Fender bassman ten amp
  150. DRRI light dimming power loss problem!!
  151. Vibro-King screen resistor
  152. Super champ reverb noise?
  153. Randall RG100ES diode (CFH) mod?
  154. Sovteks Failing...Again?
  155. Speakers for 64 vibroverb
  156. Please recommend a noise filter that works!
  157. Impedience matching for blackface bandmaster
  158. Supplier for tolex, grill cloth, and piping?
  159. My weird, vintage, rare amp
  160. Can you diagnose this problem?
  161. Trouble Finding Some Tubes
  162. source for Matchless style lamp holders?
  163. Need insight: "Fancy" cabinet design
  164. Mullard (matsushida {sp?}) 12AX7
  165. Adding a line "in" ?
  166. Mullard manufacture videos and more
  167. Salvaged Univox - now what?
  168. Amp builders/designers - please critique my circuit
  169. 5u4 Rectifier in Brownface Princeton?
  170. fx loop in a 5g9 tremolux clone
  171. Easy to punch chassis?
  172. Can someone help me ID these tubes
  173. 5E7 Checkout
  174. Express schematic
  175. 8 ohm +16 ohm in a 2x12
  176. What Makes Amps Out Of Phase?
  177. Adjust ohmage when pulling power tubes?
  178. Speaker impedence help.
  179. Fender Blues Deluxe Cutting Out?
  180. Noisey Reverb?
  181. To all you amp techs out there....
  182. Tube Amp probelm...must fix by tomorrow!!! (video included)
  183. Ampeg B-25 Amp Problems
  184. you gotta see this...
  185. V32 cathode resistor change
  186. 100 watt VS. 50 watt by removing tubes
  187. 70s Pro Reverb: noisy click on of vibrato
  188. 12AY7 vs 12AU7
  189. amp clone buyer's guide
  190. shielding a pedal
  191. Bias for Tung Sol 5881
  192. Custom Chassis Fabricators? Anyone??
  193. Question about resistor tolerance ratings
  194. Tube amp design relative to tube manufacturers
  195. 5U4 versus GZ34 (5AR4)?
  196. no sound at all in marshall jmp
  197. Marshall Help
  198. what's your opinon on using HexFred diodes in tube amps?
  199. Amperex Bugle Boy 12AX7 anybody use them?
  200. PR + Emi Red fang?
  201. Digitech gsp 2101 locked up????
  202. Amp tech in Cincinnati
  203. Princeton Reverb Experts?
  204. Metal Oxide vs Carbon Film for screen grid resistor
  205. slave out?
  206. Question about safe practices... (bias voltage)
  207. Cabinet Impedance?
  208. New Tung-Sol 12ax7
  209. OT swapping info
  210. Laney AOR 50watt model 1045
  211. Use guitar cable from head to cabinet?
  212. anyone near Milwaukee??? I need someone to fix my amp.
  213. Chassis source: FOUND ONE!
  214. wire strippers for teflon wire?!?
  215. Champ with 8ohm Tone Tubby
  216. Vintage Tung-Sol blackplate 12AX7s out there?
  217. pt for '66 super reverb bf
  218. "British Champ" w/ Power Scaling, Which Builders?
  219. How do you rebias a Bruno Cowtipper 22?
  220. Polytone Broke!
  221. channel selection of a 6505+ via midi?
  222. Amp/Channel Switching
  223. Whine - Bluesbreaker - and Pedal Question
  224. Power Amp Damage??? Help Please.
  225. Powering Orange Cabs w/ Fender Hot Rod ???
  226. Tube Tester ?
  227. Help with plexi hum.
  228. Safe to mix speakers in a series wired cab?
  229. About mixing a 1x12 and 4x12 - does ea. cab get ½ amps power?
  230. Venus 3 manual/schematics
  231. Amp making a harsh crackle on one channel?!
  232. differences between 2 identical output transformers,one of them multi tap
  233. Twin Reverb Power Tubes...dead tube?
  234. half power load switch
  235. GE 6201 for Reverb Driver in Fender BF amps?
  236. Please help me build a parts list for 5E5A Pro
  237. Replacement reverb tanks for BF amps?
  238. Of Eyelet Boards and Solder Blobs
  239. Bogen CHB 35A tricks?
  240. Allen Old Flame bias question/biasing in general
  241. 5150 III schematic
  242. Connecting a 6v6 output tube in triode mode?
  243. woodworking question
  244. Voltage conversion - how much trouble?
  245. Vibrato not working in Showman Reverb TFL5000D
  246. Are long speaker cables viable?
  247. AXESS FX1 Power Supply Question
  248. Rocktron Vendetta Output Tube Q
  249. BF Amp Filter Design Differences
  250. What transformers in a '72 Marshall?