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  1. microphonic tubes
  2. Grounding schemes
  3. OEI and Mercury Magentics Transformers
  4. Impedence for Matchless at half power?
  5. Bias Tool
  6. Route 66 bias.
  7. grill cloth and tolex source
  8. Speaker vs. guitar cables
  9. PA-related question
  10. Which tubes for DRRI ?
  11. Mono/Stereo cab wiring..How?
  12. JJ ECC83S VS. Sovtek 12AX7LPS
  13. What type/brand of wire do you use to wire up your speakers in your cab?
  14. Rivera Rake: Intermittent Tube
  15. pickup hieght
  16. Imoh?
  17. Weber Bias Rite?
  18. Purple thing blew up. :(
  19. Amp not turning on, HELP!!!
  20. How to use 220V Marshall in U.S.??
  21. Adding Stereo/Mono Switch to 4x12 Cab
  22. Series/Parallel wiring question
  23. Amp Crackle When Turned On
  24. Amp making strang noises...
  25. How do I find out how many Ohms my amp is?
  26. Is it me or the Z?
  27. Can Bad PWR Tube damage amp or preamp tubes??
  28. New Allen Amplification Power/Output Trannys
  29. volume decreasing
  30. Plate current
  31. swapping rectifier tubes
  32. Parts sources
  33. JJ tubes?
  34. Amp Shutdown
  35. Resistors
  36. Variac
  37. Ashdown Amps / Marshall
  38. reverb
  39. Amp acting funny
  40. preamp vs. poweramp (basic question)
  41. Wiring question -- speaker phase
  42. Which filter caps for a '66 Twin Reverb?
  43. Tone wise, what`s the difference?
  44. amp damage from having no speaker hooked up
  45. Amp makes fizzy noise when passing signal
  46. Weber Copper Cap Rectifiers are not what they seem
  47. UK Transformer Source + Champ questions
  48. Tubes vs Solid State - the real difference
  49. Late 60's Twin Reverb question
  50. Advice on building a speaker cab...
  51. Amp Volume Factors
  52. "Re-Capping" An Amp
  53. Can tubes and tones change after a couple of hours?
  54. Amp Troubleshooting
  55. What exactly are "caps?"
  56. Old Marshall Speaker Settings
  57. a couple of questions about 6550 tubes?
  58. Can you run 2 heads into a Marshall stereo 4x12?
  59. HELP! Tube question for '69 Deluxe Reverb
  60. mesa dual recto combo
  61. Line out Question
  62. Cabinet Impedances
  63. Dumb Ohm Guy
  64. Sorta Dumb ohm Guy Pt II
  65. Amp modding questions: impedance, new chassis
  66. 70,s twin
  67. shipping amps in this new world market economy
  68. Cabinet Power Handling - How to determine?
  69. 6L6 vs. 7581 swap out...
  70. I'm really confused about bias
  71. 100 Watt amp through 100 watt cab
  72. Help and instruction for the new guy
  73. on the behringer PMX2000 !! inputs would be appreciated...
  74. "Slave" into a power amp
  75. Rectifier Tubes???
  76. Tubes for Budda SuperDrive 30 II
  77. Name that Rectifier?
  78. Just curious - EL34/84s
  79. How to re-glue tolex on Maz 18?
  80. What to clean potentiometers with?
  81. Rectifier tube substitution
  82. Why are transformers so important in amp tone?
  83. Alessandro making a funny popping noise
  84. Att Mesa Rectifier Owners
  85. Sovtek 12AX7LPS
  86. Martha Stewart's new amp mag
  87. Wiring a cab for switchable impedence?
  88. Marshall DSL50 feedback
  89. Marshall 2204 mods
  90. Mesa MK III footswitches
  91. Biasing a Peavey C30??
  92. Amp volume pots
  93. Hard to find guitar wiring schematic
  94. My Shiva rattles - please help
  95. Tubey tendencies
  96. Possible Problem with Marhsall DSL: need some advice
  97. Microphonic Tubes
  98. 1967 Vibro-Champ
  99. Maz 18 - Hum - Humidity
  100. transformers
  101. kinda embarrassed to ask...but
  102. Mullard EL34
  103. Pre-amp output/Power amp input-style Effects Loop question
  104. Plastic jacks - any hope?
  105. Angela Amps
  106. 3 what ? possible or not ?
  107. Amp Repair Literature?
  108. 71 marshall imedance question
  109. Glowing plates - is this OK?
  110. Presence control not working - help!
  111. changing tubes
  112. wacky question
  113. Lowering B+
  114. Selmer question--Unquiet, anyone
  115. Calling Unquiet ...
  116. help: Mounting a 12V DC Fan?
  117. DrZ Maz 18JR Bias Question
  118. Hot Cat rectifier tube options
  119. Help - Toroidal power transformer
  120. Mesa Amp with Digitech RP300
  121. Weber Blues Ceramic Or Alnico?
  122. Practice amp kit
  123. Weber version of Greenback
  124. Speaker wire question?
  125. Bassman project
  126. Where to buy Tubes? Production and NOS
  127. Replacement Output Transformer
  128. Pro Reverb please help!!!!!!
  129. Kendrick/Trainwreck project
  130. '68 twin reverb-reverb/tube questions!
  131. Help....Glitch noise in my TR Custom
  132. Amp repair/tech in Philly??
  133. Pros and cons of rectified?
  134. Hooking up multiple amps
  135. Hoffman board kit question
  136. Variac
  137. Using SWR California Blonde for Bass
  138. Channel jumpering question
  139. Mesa Nomad power tubes question
  140. Tubes Versus Transistors
  141. Bias modulated trem help
  142. Weber load dump or Mini-Mass
  143. Speaker Frequecy Graphs???
  144. How does bias mod trem work?
  145. easy question (I think)
  146. Replacing tube rectifier with solid state plug
  147. I Think the Caps in my '62 Fender Brown Princeton 6G2 are Shot
  148. Want to understand your amp better?
  149. Tube question
  150. Sovtek 12AX7WA vs Sovtek 12AX7LP
  151. How Do the Big Guys Break In Their Speakers??
  152. Would a power conditioner tame the intermittent buzz in my house?
  153. class A, cathode bias, and tube life
  154. Tube questions from a tube doofus
  155. Attenuator Y/N ?
  156. Build Suggestions/Recommendations
  157. Impedance/Resistance
  158. How do you measure OPT impedance?
  159. Ever heard an OPT actually make vibration noises??
  160. microphonic tubes question
  161. hellhound crackles?!?!?
  162. EL84 question
  163. EI 12AX7s in a Soldano
  164. 12AX7/ECC83 Valve life
  165. Can One of You Uber-Techs Explain the Numbers and Letters To Me?
  166. effects loop
  167. Shiva FX Loop question
  168. Need Help With With Preamp Tubes In a Maz Sr.
  169. Effects loop problem
  170. Two heads, One cab?
  171. Good source for grill cloth, jacks and other amp building supplies
  172. New valves..must I re-bias?
  173. Series / Parallel wiring question (speakers)...
  174. Please help me find this transistor
  175. Removal of Feedback Circuit?
  176. Which soldering Iron?
  177. twin reverb inputs
  178. Tubes for Marshall Bluesbreaker RI
  179. Older Matchless preamp tubes?
  180. fixing a reverb tank
  181. Boogie Mark IV Question.
  182. Bewildered, but not shocked!...........[tube biasing question]
  183. Can I safely swap preamp tubes w/amp on in standby?
  184. 2 in one day! Those silver preamp tube shields ...
  185. Tone King Meteor reverb update mod....
  186. Cosmetic Issue: Removing/Replacing Trim Piping??
  187. 6l6 swap with el-34? Bogner Shiva??
  188. Aluminum vs. Copper for a chassis?
  189. 6BG6GA for a 6l6GC - too good to be true?
  190. Tech. question re speaker suitability for closed or open back cabs
  191. ID 12AX7A's on line???
  192. Hum on clean channel only
  193. KT66s - Me like a lot
  194. Univalve problem
  195. building a 2*12 cab
  196. Best Tweed Kit?
  197. is it safe to run 8 ohm into 16 ohm?
  198. tube tester recommendations?
  199. 18 vs 22 vs 18 watts: Amp volume
  200. Installing a trim pot
  201. ID these 12ax7's
  202. How dumb am I? (amp troubleshooting)
  203. Channel switching/cable question
  204. Any amp techs looking for an odd project to work on?
  205. Power Supply Caps question.
  206. guitar amp voltage question
  207. Very old (new to me) amp
  208. Favorite sounding caps and resistors
  209. Preamp tube sequence in the Carr Rambler...
  210. Fender Chassis In Music Man Cab?
  211. Star Ground?
  212. U.S.A Wiring
  213. Mullard 6v6's in my Marshall 1987
  214. Most important components for tone
  215. Doping speakers
  216. JBL D120 F repair?
  217. bassman heads and phase
  218. Mounting a Bias Pot?
  219. Fender Prosonic improvements?
  220. Retubing a blackface Bandmaster
  221. Voltages too high on a Jim Kelley amp.. what to do?
  222. hey.. i need help with my vibro champ
  223. Tube Replacement Soldano
  224. FX Loop Question
  225. Upgrading power and output trannies....
  226. Tube Shields
  227. FX loop...........
  228. Amp techs in Philadelphia, PA
  229. Speaker wiring...
  230. Cone cry on celestion speakers, or ?!?
  231. Slave outs
  232. Intermittent Amp Operation, Please HELP!
  233. Wiring a 4X10 cab
  234. Newbie Question - Connecting to 1936 cabinet
  235. A new tube design?
  236. Bassman Mods???
  237. Ground (earth) Color HELP QUICK
  238. Additional speaker wiring questions...and MORE!
  239. 60 or 50HZ does it matter (Hogy)
  240. Half-power the simple way?
  241. Cathode bias and NFB
  242. Amp power versus wattage
  243. Tearing Down A 6L6GC
  244. Dr. Z Maz Jr............
  245. Can you Help me look at this Diagram?
  246. Cabinet wiring question
  247. Anyone have the 80s Dumble Schematic
  248. should power tubes glow orange while playing the amp?
  249. Explanation of Self-Biasing/Cathode Biasing
  250. Mesa Studio .22 Rebuild?