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View Full Version : Amp Technical Info

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  1. Premier Reverberation repair?
  2. AC-50- tech in Toronto area?
  3. Hot Rod Deluxe hums
  4. Modded Fender Champ 12
  5. Replacing 8 ohm speaker with 16 ohm???
  6. OT's question - teachable moment
  7. Traynor YCV 40T Mods
  8. 6973 power tube ID?
  9. recs/thoughts on new transformer for '60's ampeg jet?
  10. Rivera M100 Head, is it possible to pull two output tubes safely?
  11. Ac30ccH question
  12. Is a 2104 Marshall different than a 2204?
  13. BF Champ Conditioning
  14. Ampeg Gemini I Reverb & Trem don't work.
  15. Caps in parallel ?
  16. Marshall Rebranded EL34's ?
  17. Practice solid-state amp has a flatulence problem.
  18. Best Way to Test Capacitors "In Circuit"?
  19. What is this amp
  20. Quick rectifier question
  21. My First Cap Job (Fender Champ)
  22. Twin Reverb--Clicking Vibrato
  23. DR with a line out...
  24. How hard is it: True Bypass my 80's Phase 90?
  25. Screen/Grid resistors
  26. Fuse markings question
  27. anyone tried a beefier Reverb transformer in a Fender Black face/silverface amp
  28. A Couple Questions about My Vic Champ?
  29. Wattage/power usage question:
  30. Amp pops when turned off/on
  31. What are the first five things you would do to a 50 year old amp?
  32. Bias 6g6-A Bassman
  33. "Capco" brand capacitors circa 1965
  34. LANEY GH100L OT or other??? UGH
  35. Recap 6g6-a bassman? 600v?
  36. Amp's Total Wattage
  37. What are you guys using to replace the can-caps of BF/SF Champs?
  38. Powe Tube Biasing
  39. Vintage Ampeg Gemini Re-cap, re-tube questions
  40. Fender DRRI reverb comes on magically
  41. PRRI and Tung-Sol 6V6GT Reissues: What Bias is too Hot?
  42. More Questions About a Champ
  43. Red-Plating in Cathode Bias Amp
  44. Sunn Sceptre: Weak Vibrato Cause?
  45. Another tube matching question
  46. Can the same Xformer from different eras put out different voltages?
  47. SF Deluxe Reverb 70w Ultralinear mod
  48. High voltage on preamp section for re-solder?
  49. Fuse blows, then?
  50. Quick death cap question
  51. Not really amps..but technical..pedal.. COT
  52. HELP!!! My '68 Deluxe is having issues!!!
  53. Low hum in solid state head.
  54. output transformer for upcoming project
  55. SF Super Reverb dead this morning
  56. TV's "How It's Made": Electric Guitar Amplifiers
  57. lower gain preamp tubes realy giving more headroom?
  58. soldano SLO
  59. Help Biasing A Peavey Roadmaster??
  60. marshall dsl 100 died on me
  61. Desoldering
  62. Damaged speaker: is it a goner?
  63. What do I have here? (tube related)
  64. Can new pots cause hum?
  65. Help! - Need layout diagram for Fender Concert II
  66. While Impedance Is Being Discussed - Need help
  67. Bassman - strange click/snap noise...
  68. Bassman started humming even with the volume off. Diagnosis?
  69. Taming a Super Reverb with 6L6WGBs
  70. Using "Power Amp In" on Hot Rod Deluxe
  71. 4\16 option.... How does my amp know which...
  72. Suhr Badger, tubes light up but no sound.
  73. Weber Ceramic California Speaker Info Needed
  74. Fender tech: Is there a real danger to ouput 4 ohms speakers with a 8 ohms amp?
  75. Rivera Fender Deluxe II Mods
  76. Traynor ygm-3 tone controls?
  77. Marshall: Need CORRECT JCM800 2203 Schematic
  78. making a metro jtm 45/100 louder??
  79. Allen Old Flame Issues
  80. NOS Tube Smell?
  81. NE1 know what brand Reverb tank came w/ Ampeg Gemini I
  82. EL34's for vintage Hiwatt DR-504....
  83. I need your opinions on building my first 4x12 cab
  84. AB763 Bandmaster Mod - what is it?
  85. Accutronics reverb model..what is this one for?
  86. What's the deal with Crown PA amp repair?
  87. Toilex and Speaker cloth
  88. Which tube runs the tremolo in a Princeton Amp
  89. Assuming the PT can handle the extra current, a Champ could run a 6L6, right?
  90. Thinking of re-tolexing an amp-- how do I get the tolex off?
  91. Using a Hot Plate with a Tonemaster. What Impedance?
  92. Fender dual showman reverb head size
  93. New power tube noises. Opinions?
  94. Noisy Tung-Sol
  95. Roland JC-120 1987 model potentiometer Q:
  96. Yamaha G-100 Troubleshooting/Repair
  97. power tubes and OT's
  98. NOS TUBES prove subtle difference
  99. 57 twin RI & leslie
  100. JTM45: put in EL34 instaed of KT66 ??
  101. looking for amp tech in CT, any advice
  102. Effect of lower voltages on amp
  103. Speakers--front or rear loaded: definition?
  104. 2 questions about sweetening mids on my BF Deluxe
  105. Trace Elliot Speed Twin C30 Footswitch
  106. Peavey Classic 30 tubes didn't light up.
  107. 59 Bassman RI & Attenuater?
  108. Best place to rebuild a vintage transformer?
  109. can I use polarity switch for a stanby switch?
  110. Fender '65 DRRI Tube advice needed
  111. Tubes glowing bright red...
  112. Does a rectifier change require re-biasing???
  113. Does anyone do fx loop mods on Blackheart Handsome Devil head?
  114. can someone decifer these transformer codes for me please
  115. 5E3 Output Transformer Impedance
  116. Crate V-33H power tube biasing...
  117. Matchless HC30 question...
  118. Ohm amp/cab ratings?
  119. Gemini 1 schematic
  120. Hiwatt DR-504 Very Little Volume...Help!
  121. What gauge wire do I need?
  122. Combo Amp Buzz
  123. Blues Deville help needed---UPDATED
  124. How to determine 12AX7 vs 12AT7 when
  125. 6CG7/6FQ7--Phase Inverter?
  126. Selmer Treble N Bass 50 Mk III
  127. Unwanted Speaker Noise - How to Eliminate???
  128. Can you hardwire a SLO for 240 volts?
  129. SLO volume dropping at times and EQ not doing much (very old tubes)
  130. Vibro Champ doesn't vibro
  131. JBL D130 Re-Cone
  132. Lamp Cord/ Extension cord for speaker wire... must be copper?
  133. New respect for Dr.Z -- Galaxie innovation
  134. Tube changes in crate v33
  135. Why don't SF wires run under the board and what advantages are there?
  136. 63 Vibroverb RI questions
  137. Attenuator & ohm question.
  138. Recommend a decent, reasonably priced tube tester....
  139. Anyone know of a good amp tech in Dallas / Ft. Worth area?
  140. Heathkit EA2 conversion question...
  141. so i can't date this pro reverb
  142. How to disconnect reverb (removing chassis from cab) on Fender HRD?
  143. New tubes go in - immediate fuse blow - reason?
  144. Marshall blows fuses
  145. Mullard Re-issue EL34/JJ 12AX7 Gold
  146. how to tighten low end in fender amp
  147. I Need Schoolin' (and baby I'm not foolin')
  148. Fender 57 Twin - Victoria 50212 owners... chassis cab mount question?
  149. How To: Deluxe Reverb RI Bright Switch
  150. Crate amp hums
  151. Tube substitute for 6SQ7?
  152. BF Bassman. Confusion over bias circuit.
  153. Mids Control Modification problem -Vibroverb -Please Advise!!
  154. Vibrolux Filter Caps
  155. Voltage Regulation 120 or 110 for vintage amps?
  156. master volume pot for 2204
  157. BadCat Effects Loop Issue
  158. Budda SD30 preamp tubes
  159. sozo cap markings
  160. I need some books on Building Amps?
  161. are there mods for Fender BF vibrato to make it deeper
  162. Tweed Deluxe/20112 Volume Pot Question
  163. BF Princeton (Non Reverb) Volume Issue
  164. My amp sounds great but?
  165. Blackstar Ht5 effects loop problem
  166. Does the amp need to be re-biased in this situation?
  167. Standby switch question
  168. JJ EL34s
  169. What is the easiest and fastest way to locate the bad tube?
  170. Replacing resistors question...
  171. Molded Caps
  172. SE Tube Amp Has Tremolo When It Shouldn't
  173. eq reverb mod HOT ROD DELUXE
  174. Holes in NOS EL34 guide pins...any big deal with that???
  175. 6G6-B Bassman Preamp Tube Functions
  176. Dumb question, I'm sure
  177. 1484 ohms
  178. Fair Price / Amp Repair
  179. 6v6 Cathode Bias ?
  180. ohmage prob?
  181. Loose tubes, blown fuse?
  182. 12AX7 PI Testing Results!!!
  183. Ohm, resistance, speaker and cabs
  184. How big a fuse does it take to use a JJ GZ34S?
  185. Anybody use a Mono Power Amp?
  186. Reverb Problem on DeVille
  187. Where can I go for info on some unusual power tubes
  188. TAD 7025 High Grade
  189. hum on a Champ 12
  190. Solid Sate power amp section problem - HELP!
  191. Any 2 knob tone stacks with low signal loss?
  192. Rectifier diodes...
  193. Effects stopped working on my JC-120.
  194. i was given these speakers. . .
  195. Put some NOS in the BF Bassman. It was good...then not so good.
  196. Crossover Distortion During clipping
  197. Signal cap Question (5e3 build)
  198. 12AX7LPS Question
  199. Fender SR Speaker replacement fit question
  200. Negative feedback resistor values
  201. 67 Super Reverb gain loss problem
  202. Strange resistors in my '61 Deluxe
  203. Question about amp impedence settings & speakers
  204. mullard el34+ rivera? Good combo?
  205. Output transformer shunt biasing...
  206. Biasing a Twin Amp
  207. Fender amp extension speaker question
  208. Matchless Rectifier Question
  209. Is this the "Death Cap"?!
  210. I'm thinkin' about building a brown Deluxe 6G3...
  211. ampeg sb12 with 7868 tubes need bias how to
  212. accutronics Reverb-Hot Rod DeVille
  213. help me identify some values in this Bassman 5e6 layout
  214. Getting horrible sound from amp's reverb
  215. Speaker cable
  216. Fender Hot Rod DeVille(4x10)-Should I make modifications?
  217. Suddenly..no sound at all ??
  218. What exactly do the Rivera boosts do?
  219. Help with -feedback question on a Gibson GA-16t
  220. NFB Polarity on SE Amps
  221. Bad Buzzing in SF Bandmaster Reverb
  222. Weber Z matcher tech questions
  223. Dr. Z Mazerati tube position
  224. speaker impedance question
  225. Peavey Bravo Reverb Tank
  226. Modified Bassman idea? Tell me what you think.
  227. Deluxe Rev Output Tranny Meltdown
  228. Horrible muffled dissonance coming out of EL84 amp
  229. Fender Super reverb problem
  230. Thoughts on weber mass?
  231. Using a 12AX7 as a phase inverter in a Fender BF Amp
  232. Anyone make a Vox Kit with reverb?
  233. Question about silver and blackface Vibrolux
  234. Installing 1/2 power switch?
  235. Ampeg Cap Kit?
  236. celestion blue vs vintage Jensen p12r vs RI Jensen P12r vs something better?
  237. Need suggestions for tubes
  238. Budda Superdrive Service/Tube Question
  239. Who here has converted an AB165 Bassman to EL34?
  240. Parallel twin triode for the 1st gain stage
  241. 100V in Japan...=....Brown Sound??
  242. Found some NOS Kapsch caps . . . anyone know about them?
  243. Want to build a tube preamp
  244. Modded Bassman idea-- take 2
  245. Phase angle of the impedance curve
  246. Help! Echo type of effect coming from reverb tank
  247. Gemini I Channel 1 out
  248. Hissing from my 57 twin....need advice!
  249. Multi Section Caps
  250. No screen resistors???