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View Full Version : Amp Technical Info

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  1. what should i do. save up for another guitar or get a Marshall AD50?
  2. 1 watt Carbon Film or 1/2 watt Carbon Comp?
  3. Anemic Super Champ
  4. Looking for Belden 1874/U 2 conductor, shielded wire
  5. Dead tube socket
  6. 1980 Hiwatt: Variac Recommended?
  7. Cabinet rear panels: Clearance for tolex??
  8. Marshall JCM 800 4010 capacitor question
  9. '67 Bassman problem......ideas???
  10. New rectifier tubes.....re-bias??
  11. Volume drop from normal to tremolo on DRRI?
  12. New 12AY7s - Groove Tubes vs EH
  13. ampeg sb12 bias
  14. Vox AC30 won't turn on...
  15. Help with a old Gibson GA-18t
  16. amp status LED
  17. Learning speaker reconing?
  18. question about Derek Trucks' amp????
  19. Can you modify reverb to decrease/quicken decay???
  20. Vibro-King Clone
  21. reproduction tube chart - where can I get them?
  22. Will JJ 6V6s take more abuse than some NOS?
  23. Installing a midrange control on a Fender
  24. Help (SF) Vibro Champ popping fuses
  25. Clean channel too bright
  26. tube replacement
  27. Help me identify this speaker
  28. Vibrato vs Tremolo
  29. help understanding split load PI's
  30. Tube Biasing and Tube Specs
  31. SF Princeton Reverb: Weird noise w/ delay pedals...
  32. Marshall plate voltage low??
  33. Cross Post: Add Mix to Muff?
  34. Need help dating a blackface Bandmaster head
  35. ID This OT
  36. RCA to 1/4" speaker jack?
  37. Marshall 2204 screen supply changes
  38. semi on-topic (but not really:) Help repairing an old hi fi speaker of strange design
  39. Bias????
  40. Cathode Follower and PI tubes- tonal impact?
  41. BF Deluxe Reverb High pitch noise
  42. 2x12 speaker hook up/out of phase
  43. 6V6 pair bias cap value
  44. Marshall 1974X tube question
  45. amp not producing sound
  46. Blues Deluxe problems
  47. Cabinet String: Glued in?
  48. How do you know when your amp tubes are spanked?
  49. Sig-x tube problem
  50. Redplating in Marshall 2061CX??
  51. Newbie question
  52. Grounding a '65 Vox Pacemaker
  53. Screws: Bulk suppliers?
  54. deluxe reverb clone normal channel not working
  55. 6sc7/6sn7/6sj7
  56. Mixing speakers
  57. Sourcing a ~'77 Marshall 100w output transformer?
  58. How does a phase inverter affect tone?
  59. Converting plexi clone to Cathode Bias?
  60. Fender 66' black face twin turning on after years of non use???
  61. When in half power mode, do the ohms double?
  62. seeking Fender reverb unit (6G15) knowledge
  63. About my newly acquired Marshall 1960AX cab....
  64. amp problem... help please
  65. Using 6CN6/EL38 for power tubes in place of 6V6's
  66. Tube help! Please!
  67. How would you make a '59 Bassman LTD run in class A...
  68. What kind of tubes?
  69. Series/Parallel vs. Parallel/Series speaker wiring
  70. PTP Tremwreck
  71. Urgent Help Needed Troubleshooting Amp Problem
  72. I need a line out from a Dr Z Airbrake.
  73. 6L6 recommendations...
  74. Effect of speaker specs on tone?
  75. Using different power tubes in an amp
  76. Could I mod a Fender Champion 600 to Vox AC4?
  77. Troubleshooting reverb..
  78. bad hum/noise from my amp that shouldn't be there(need help)
  79. Please school me on rectifier tubes...EZ81?
  80. Not sure what's going on with my JCM800
  81. Biasing a JCM800 2210
  82. Silvertone 1389 transformerless amp: looking for schematic
  83. Marshall 1960 cab 32ohms, how?
  84. Another Blown Fuse Request
  85. Effects Loop for BFDR
  86. JAN-CKR-6L6 Metal Casing Tube; Is it a suitable tube for Carr Mercury?
  87. Accutronics tanks from 70's...
  88. So I opened her up...(Mesa .50 Cal + problem)(pictures included)
  89. Help.. Jennings JEI V30
  90. How do I check plate voltages on my preamp tubes?
  91. Condensation/Saftey question
  92. Amperex Tubes Question
  93. Humming Phase Inverter
  94. Marshall Style switching Jacks?
  95. Doing a Cap job.....Vintage Fender.....
  96. anyone have a Motorola KSN1142 piezo horn driver laying around?
  97. Discharging Voltage in Amps
  98. Advice requested: Marshall + Step Up Transformer
  99. Power scaling in a Fender blackface style amp -- Any experience?
  100. Source for single conductor 22awg shielded wire?
  101. Portaflex PT replacement options?
  102. bedroom bass amp head for DIYer?
  103. Diagnosis needed
  104. Mesa MkIV Troubleshooting Assistance...
  105. Do all tubes have secret codes?
  106. In an effort to understand.....
  107. Tube Testing question
  108. HELP! Badger down.
  109. noob question about tweed amps and biasing
  110. Power Transformer upgrade in 5E3?
  111. 68 Bandmaster
  112. AC30 buzzzzzz
  113. Mallory dark yellow cardboard electrolytic filter caps : How old ?
  114. How long until my friends' amp blows?
  115. SFPR: distortion when vibrato on?
  116. why a choke?
  117. Fender blakcface amps - what causes bass to fart-out
  118. "Proper" Speaker Ohmage Choice ?
  119. cone cry
  120. Help with rola speaker
  121. soldering question
  122. Output tranny swap to multi tap?
  123. power transformer question for Blackface project
  124. OHM load change from removing 1 speaker in a Super Reverb, bad?
  125. Output Transformer wiring Question?
  126. Speaker Wattage/Efficiency Question
  127. IIC+ channel switch, what can I use ?
  128. Fender Pro-Reverb AA165 240v mod
  129. Ideas for replacing recessed handles?
  130. Fender Vibro-king cathode follower stage?
  131. Scored a 6G6-B, Lots of Tech Questions
  132. Question about Cross-Line PPIMV
  133. another noob question about biasing tweed amps
  134. Warmer 12AX7
  135. max dissipation for EH 6V6 ??
  136. Solid State Amp Question: Boosting line level before the input...
  137. Fender Red Knob loosing volume
  138. Tubes or sick amp?
  139. soldano sp77 pre amp, need info form owners
  140. Sovtek Mig 50 help!
  141. Bogner Shiva Help - Static/buzzing on low E, A, and D
  142. SF Pro Reverb Volume Issue?
  143. help ID'ing EV speaker
  144. Good NOS 12AX7 for PI?
  145. Going from Sovtek so called 5881s to EL-34s
  146. What is the name for these tube problems?
  147. El 34 tube life ?
  148. Current Lot of KT88's
  149. Groove Tubes Bias help
  150. 12ax7s in vibroverb custom???
  151. Question - Amp Problem SCXD
  152. amp tone question
  153. LTP as a Mixer
  154. What is the best filter cap for re-capping a vintage Hiwatt?
  155. Volume surge after the amp is switched off?
  156. Biassing Precautions
  157. 6v6 tubes for Meteor II
  158. anyone built an Allen sweet Spot?
  159. AC30CC Head Question
  160. opinions on Tino Zottola's books?
  161. I might just be stupid...Hum question
  162. Traynor YBA-1 preamp tubes - which is which?
  163. My cab's 16 ohm jack reads 22 ohms??
  164. JCM 2000 DSL100 no sound! please help!
  165. dyslexic needs help w fender tube slots
  166. Amp Tech in Orlando FL
  167. NOS JAN Philips 6L6WGB in 1966 Twin Reverb YES or NO
  168. jcm900 biasing problems!!!
  169. Shield the BOTTOM of the Reverb Pan? -SFDR
  170. Preamp tube clipping. Top vs bottom of wave.
  171. Source for NOS Fender BF Amp Tube Cans ?
  172. 18 watt TMB Problem
  173. shielding for the amp cab?
  174. What do these resistors do?
  175. Classic 50 static issue
  176. Weber Bias Rite
  177. 8 ohms into one 16 ohm cab
  178. Possible to turn an 8ohm speaker into 4ohm?
  179. Static type noise with no input
  180. EL34 Mesh Plates?
  181. Vibro-king W 15" Spkr Weber Z Matcher
  182. Vibro-Champ Help
  183. tube started to redplate, what's the likely problem?
  184. Best Re-Cap Job you ever seen...or NOT seen
  185. Repairing the footswitch relay on a Boogie
  186. Switch "Whump" in OD Pedal
  187. One amp noisy.............the other not??
  188. Pre-amp Tube Question (Valveking)
  189. KT66 in 69' 50watt Plexi
  190. Supersonic reverb feedback
  191. KT88 vs 6L6?
  192. Oscillating fuzz ?...and not in a good way...
  193. Supersonic volume loss (blown cap)?
  194. Y cable to connect cabinets
  195. KT-66 Bias ?
  196. 12ax7 to EF-86 adaptor ?
  197. wiring for PA speaker, need help
  198. Bogen CHB50 help
  199. Princeton reverb PaulC mod
  200. So I decided to go with an AC15H1TV combo.
  201. Diezel VH4S Biasing Question...
  202. Differences between 12AU7 vs 12AX7?
  203. 18 watt Tone Control Problems
  204. How much danger am I in?
  205. Choosing which tube/ valve to go where... [mostly chinese pre-amp content]
  206. searching for schematic.. AIMS VTG-120
  207. Why do the chassis in many amp heads hang upside-down?
  208. Matchless clubman shorted recto, now no output. Help!!! Puh-leese!
  209. Peavey PA head question
  210. Reverb not working......what to check next?
  211. Power tubes for MM 210-65
  212. Ugly distortion only at higher gain levels - reverb transformer?
  213. Substituting EL34s with 6V6s?
  214. Does the bias affect how well an amp cleans up?
  215. jcm800 clone, power tube issue.
  216. Matched quad tolerances?
  217. which tools are most helpful in amp building?
  218. jtm60 transformer URGENT
  219. Loud vibration noises from Fender reverb...How to fix?
  220. How do you know when caps in your amp are going bad?
  221. Peavey Delta Blues: Weak Vibrato
  222. 5881 vs 6L6.....the difference is?
  223. Cathode Bias Benefits?
  224. What do you think this could be?
  225. Bias Fender Amplfier Myself Easy Yes? No? Help the Dummy?
  226. Budda Super Distortion 30/ Ring Modulator
  227. who has a Weber Z-matcher?
  228. Just finished Metro 50 watt plexi build!!
  229. I think I destroyed a speaker
  230. Speaker Reconing in OC/LA reccomendations
  231. What's the word on Chinese 6V6's?
  232. tube socket recommendation?
  233. Filament Inrush
  234. Electrolytic Caps: Can vs Axial
  235. Searching for PCB-mount pots
  236. Filmosound M-1 2x6V6 mods?
  237. Mounting a speaker - how tight?
  238. My amp is squealing, cutting in/out..what's wrong?
  239. Running two attenuators on the same amp
  240. Is this normal?
  241. Good amp tech near Lake George NY?
  242. Bias Your Own Amplifier Video Instruction Site
  243. C-10 Mod on a DRRI...
  244. JCM 800 design question
  245. Anyone know of a good (beginner's) amp repair book?
  246. Tidy & Neat Wiring - Tips?
  247. Where can I buy amp tubes in Chicago?
  248. What is the goop used to hold down parts?
  249. Bizarre Electronic Conundrum !
  250. F&T Filter Caps: Any opinions?