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  1. 69 Bandmaster reverb-rebuild
  2. Do variacs help in voltage regulation too?
  3. Plate resistors in Marshall circuit creating noise?
  4. built a guitar amp. need some troubleshooting advice
  5. Selecting correct wattage speakers!
  6. Power cord question
  7. Update - Cryo Tubes
  8. AC-powered Flanger - electrocution danger?
  9. Preamp tubes - when to buy "balanced" and/or "matched"?
  10. Tubes identification
  11. help with a hot rod deluxe
  12. DRRI questions
  13. Found a amp project today comments welcome.
  14. Resistance across speakers.
  15. New Weber Speaker in My Velocette
  16. Standard Tone Stack Cap Value Question
  17. What's magical about the 4-16 ohms window?
  18. Recitifer tube?
  19. Looks like Atoms may be here to stay after all?
  20. rebiasing question
  21. Tube going bad? Bad Cat Cub... Which one? Refresh my memory...
  22. Amp Dropped Reverb Doesn't Work Help
  23. Clean up oozing capacitors
  24. Why does my amp sound different sometimes?
  25. wiring in parallel - odd question
  26. Rectifier tube trouble
  27. For EI tube fans
  28. Modding my Fender Bassman head...
  29. Can you diagnose this amp problem??
  30. Need help finding a schematic for a phono amp for a conversion for a friend
  31. Fender Amp tech question, Please help if you can...
  32. Speaker rating systems
  33. who is this guy?
  34. Recommended JTM45 mods
  35. Help Biasing a Class A Amp
  36. Is there any hope for this chassis as a guitar amp project?
  37. Positioning of V1
  38. tweed differences?
  39. NEW book about preamps!
  40. discharging caps
  41. How DO you bias an amp correctly?
  42. fix for "dirty" power?
  43. YBA-1 ground switch
  44. Red Plateing question
  45. A little Class D remedial help?
  46. Green face altecs
  47. JJ 6V6S putting out >15w in my Victoria 518
  48. tube amp noise question
  49. 12AY7 in a DRRI?
  50. Noobie wants to fix his own amp... help!
  51. Bringing back a messed-with small single-ended amp... help!
  52. Peavey XXX Retubing
  53. How do I get reverb into channel 1 of fender deluxe reverb reissue
  54. How do I make the 2 channels of a deluxe reverb reissue in phase with each other?
  55. '?? differences in biasing GEC KT77 compared to EL34 in JMP marshall'
  56. Changing out a resistor on a 5E3- Dangerous?
  57. blown fuse problem with a Marhsall Super Lead
  58. Question: Amp Damage from Bad Tube
  59. Suggestions for a Digital Multimeter
  60. Does this sound like a blown filter cap?
  61. Two questions about THD Hot Plate
  62. The 'Presence' control?
  63. Bias pot in Ampeg V-4B
  64. Amp makes "single coil" type hum
  65. Reeves Custom 50 head (EL34's)
  66. 6v6 tubes questions
  67. Too much bass/woofiness in Marshall Plexi circuit...
  68. Adding ground prong to an old Champ?
  69. 12AX7 and 12AY7
  70. Turning A Combo Into A Cab
  71. tubes for a Naylor SC-38
  72. Worthwhile SR mods?
  73. Noisey Microphonic Reverb
  74. Could this be a bad speaker?
  75. Changing the PI in cathode bias amp
  76. Chinese KT66 Rattle
  77. Who wants to fix my Valve Jr.
  78. Electro Harmonix or JJ tubes??!
  79. 'brighter' 12ax7
  80. Too low or too high voltage? I need help!
  81. Cap voltage values . . .
  82. Hot rod Deluxe input jacks
  83. Bias Question
  84. Gibson Skylark 5T Help the Dummy
  85. Speaker ohms question
  86. Tung-Sol Issues
  87. 12b4a Is used like high gain 12ax7?? or i'm being fooled?
  88. Bassman RI internal fuse value?
  89. deluxe reverb 2 problem
  90. London Power Press?
  91. New VA KT66 Dead in 20 hours...Replace w/ same/other?
  92. Class A + Orange
  93. this is a lil weird.
  94. Tweaky tone knobs?
  95. OK I tried that Zenith amp as is to see what it sounded like.
  96. hmm... an interesting terminology/nomenclature question...
  97. jtm 45 vs tweed bassman
  98. Amp Help
  99. modifying a Bassman
  100. Another beam blocker question.
  101. Reverb driver question
  102. Fender amp squeals when tilted back
  103. Help me service my Champ!
  104. Carvin SX100 amp speaker hiss
  105. Sozo Cap test
  106. EF86 front end on a Marshall!
  107. Speaker Phase?
  108. Fender Twin Reverb Noise Problem
  109. Dr. Z Rt. 66/KT45 questions
  110. EL84 amps and biasing
  111. 12AY7 question
  112. wiring a 4 10" for 16 ohms..?
  113. Vox AC15 CC, what tubes to buy for the best sound?
  114. Transformer Specs
  115. 12EU7 Preamp Tubes?
  116. ID a 12AX7 please
  117. not really technical amp info but...
  118. Loose tube base
  119. The importance of biasing.
  120. Anyone know if a a good online source for detailed Tube pictures?
  121. Brand new 1M pot bad?
  122. Question on a Champ 12...
  123. Amp impedance switching
  124. Silverface Vibrolux bypass caps
  125. Anybody have a Ceriatone DIY amp?
  126. Vox AC30 question - Subtones
  127. Bias question - voltage & current difference between tubes
  128. drri reverb & volume questions...
  129. Amp makes cracking losing power noises only at higher volume, what to do?
  130. Denver/ Colorado Amp Techs
  131. Princeton/Weber Speaker Problem
  132. Can speakers "go bad"?
  133. STF Electronics question
  134. What does "HI-MU" mean when describing a tube?
  135. Volume swell. What would cause this?
  136. Help! VAC 22 6V6 Bias
  137. What model Jensen speaker is this?
  138. New Project? SF Dual Showman Reverb Questions...
  139. Fender Concert II question
  140. Effect of cap type in BF vibrato circuit
  141. Restoring a Tweed Deluxe
  142. Fender Princetons
  143. Speaker sensitivity question...
  144. tube warm up time?
  145. Speaker Cab Insulation, Yes or No?
  146. Adding a "Speaker OUT" for Roland JC-55?
  147. Tube question
  148. international servicemaster 6l6gc
  149. Tung-sol 5881's in a Super Champ?
  150. Is This Fixable? (Twin Reverb Cab)
  151. Combo cabinet tolexing services???
  152. Suggest OP XFM fro Marshal TSL 100W
  153. Disconnecting a Fender Trem Circuit...
  154. Why Fenders are pedal un-friendly?
  155. Cap Goo
  156. Is this thing safe for my amp, anybody use one
  157. reverb on both channels
  158. Help with 50wOT for MS1987
  159. tube or other issue?
  160. Blasphemy ?
  161. Who will fix it?
  162. Instructions on biasing a Marshall head?
  163. Tung-Sol 6550 tubes anybody tried them
  164. Traynor production amp assembly video
  165. Any benefits of Series over Parallel or visa versa?
  166. SUPER CHAMP Gain Channel Mods?
  167. JCM800 2203 Bias Pots
  168. Amp Hum
  169. What can be done to (make better) a Blues Deluxe Re Issue
  170. De-rating amps
  171. Plate Voltage Question for Reverend Owners?
  172. Need Some Electronic Guru Help
  173. Fender Intensity Control Switch/pot... (wiring question)
  174. Power Tube glow question 50 watt Marshall
  175. Tung Sol KT 66?
  176. Ported 2x12 cab idea....
  177. Pulling tubes and using a Hot Plate
  178. Can reverb be added to a Showman?
  179. Mercury Magnetics?
  180. Bias Pot
  181. What output transformer for '68 Fender Vibrolux Reverb?
  182. Badger/Suhr/Power Scaling questions
  183. Dr.Z Maz38 - volume issues
  184. Switching a Sunn Model T to EL34s
  185. Help with blown fuse?
  186. Just got a peavey ultra 60, and was playing :( now it won't
  187. Retentioning octal tube sockets
  188. Fender power transformers; any effect on tone?
  189. Amp tech question...Fender Vibrolux
  190. Another Impedance Mismatch Question
  191. Lay rest to some amp myths
  192. Increasing Fender Bright Switch Cap. Uf Pf Nf ?!? Help
  193. preamp tubes problem solved??
  194. Where to get turret board?
  195. Marshall JTM-60 troubles..
  196. Weber Z Matcher?
  197. Fender Pro Junior Mods
  198. SFVR pull boost removal
  199. oscilliscope. any good cheap used models to go with
  200. Which 6L6 tube for '66 Pro Reverb, least amount of breakup?
  201. What gives still getting shocks?
  202. Budda sd18 troubles???
  203. Loose Tubes Cure ???
  204. Just got my Traynor, BUT
  205. Plate load resistor mod for AC30CC
  206. Looking for an Amp Tech in Los Angeles Area
  207. Fuse question
  208. Help! My new (old) Magnatone got boinked by UPS!
  209. Shielded wire from input jack; ground one end???
  210. FRED vs. THD Reactive Rectifier
  211. Hiwatt transformers - today's equivalent
  212. 5E5 Bassman cab vs. 5F6 Bassman
  213. 6L6GC identification?
  214. Speaker cab construction idea
  215. ohmage help!
  216. 5AR4/GZ34 = 5V4GA (Philips ECG/JAN)
  217. 68 Bandmaster Reverb cathode biased?
  218. '68 Traynor Custom reverb; remove ice pick highs via slope resistor?
  219. Help in re-capping my Gibson Falcon please?
  220. Current Production 6V6s?
  221. Identifying old versus reissue Mullard EL34 tubes?
  222. Question on KT66s
  223. Biasing 5881's
  224. Tube / valve Identification Codes
  225. What is the VibroKing a combination of?
  226. Zenith amp conversion update.
  227. Using a 1/2A fuse in place of a 1/4A...
  228. Question for you pro designers
  229. New Tubes For Fender Twin
  230. Eminence question
  231. Can someone ID this OT?
  232. Cabinet Help
  233. EVM Recone
  234. Mesa MK IV Question *Tube Related*
  235. where to get transformers?
  236. Bias Meters...
  237. New production tubes vs NOS
  238. Thoughts on Hammond OTs needed
  239. freezing tubes?
  240. What happens if I leave the 2 prong cord on a '70 Princeton Reverb?
  241. 22uf/500v cap on plate resistors?
  242. I think I killed my amp, HELP!!!
  243. Need tech in So. Fla..
  244. BF Bassman for mostly Bass. Tubes??
  245. Amp Cuts Out Until Well Warmed Up
  246. SF Bassman Retubing
  247. Musicman RP-100 EL-34 amp worth fixing?
  248. Tweaking the Tiny Terror - check my work?
  249. Want to run 4x10 cab as either mono or stereo
  250. More tube questions - troubleshooting - 6L6 GC