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  1. Accutronics Reverb Pan Question
  2. Going rate for cap jobs
  3. Vibroclone filter caps
  4. reverse phase
  5. Ei EL84EG tubes
  6. unplug that speaker?
  7. Y cable for two heads into one cabinet??
  8. Quick tubing size question......
  9. Dumble OD trim values?
  10. Rectifiers - Solid State vs Tube
  11. Bassman Head Slow to Power
  12. brownface question
  13. amp tech in minneapolis
  14. Tube Question
  15. Bias voltage Question
  16. 1979 Bandmaster Reverb question
  17. Over powering a bass cabinet
  18. tubes for an AC30HW 2*12
  19. 16 ohm head into a 8ohm cab ?
  20. blowing amp?
  21. Boogie 50 Caliber + problem
  22. Swapping low output tubes for high output tubes?
  23. Amps without standby question (s)...
  24. Recommend books for audio circuits?
  25. What's the "Brown" sound?
  26. TAD 6L6 power tubes
  27. Mesa Lonestar makes a loud bang when shut off
  28. Wire for a marshall cab
  29. Yet another Dumble conversion...
  30. speaker wiring question
  31. Help, only 1 power tube glows
  32. 64 Vibroverb tranny quest
  33. Volume going up/down.... bad tube?
  34. Pedal or signal path problem.
  35. Speaker doping?
  36. ohms of the 1960 Ampeg Jet (Speaker swap)
  37. Recommend an oscilloscope?
  38. Tonal Characteristics of Cathode Biased Amps...
  39. Deciphering Ruby Tubes label on EL34's...
  40. el34 test data ...... good?
  41. Amp experts come to my rescue!
  42. Plate dissipation vs. Power output at speaker
  43. Installing Speakers yourself...how hard?
  44. Using Two Amps with One Cab?
  45. Sourcing 3/4" Italian poplar ply
  46. Carvin Factory Hot-Rod Mod??
  47. Solen Polypropylene Caps
  48. Question for tube tester gurus
  49. 64 Deluxe Reverb Voltage question
  50. Best NOS tubes for Marshalls?
  51. Guitar tone for dummies?
  52. Biasing question - if power tubes are matched but...
  53. Un-Matched Tubes = Best Tone?
  54. Solid State or Tube?
  55. Smooth vs. Ribbed
  56. Tubegarden Harvard circuit
  57. tube question...
  58. el34 and 6l6, interchangable?
  59. What proves a tube is microphonic?
  60. What does Oscillation sound like?
  61. impedance = power & volume loss
  62. I have a Crown CE 2000 amp on the fritz..
  63. Celestion G12 Alnico Repros on Ebay?
  64. Fender Champ 12
  65. making my champ clone clean?
  66. Help! Amp Problem!
  67. Celestion Blues in a Bluesbreaker?
  68. 4-ohm parallel or 16-ohm series?
  69. Do I need to rebias my Marshall 2203X if I pull 2 power tubes?
  70. NOS Phillips Miniwatt EL34's
  71. changing valves
  72. strange tube thang...
  73. Please help! How do I find the center tap of an o/p tranny?
  74. retainer springs making tube microphonic?
  75. Couple things on EH and RFT's
  76. Need help with transformer ID
  77. Another Tube Pulling thread.
  78. Help restoring 1961 Fender Vibrolux Reverb Amp
  79. Can you hear a difference in brands of rectifier tubes?
  80. TAD 6L6 tubes
  81. GT Chinese 12AX7....
  82. How to ID 9th generation chinese tubes?
  83. SOVTEK MIG-50 pilot light??
  84. polarity of an old fender
  85. Is it true that the better the clean channel on amp.....
  86. (preamp question)v1~v4 what does that mean?
  87. 6l6 - 6v6
  88. JCM Blowing fuses after a strange hum. What is causing this to happen?
  89. '61 Reverberocket fails!
  90. Need advice on how to troubleshoot a hum
  91. chirp/squeel from Fender Vibrato circuit
  92. Who makes the best sounding EL34's in Production Today?
  93. Question about Tubes?
  94. Biasing your own amp
  95. cathode switching vs B+ (plate)switching
  96. Power, but no sound
  97. VHT Pittbull Bias and related
  98. another biasing thread-jsx
  99. Impedance matching?
  100. Mesa amp troubles started while playing.
  101. Replace Classic 30 MV pot for better control?
  102. Tungsram 12AX7- these any good?
  103. newbie
  104. Tube questions
  105. pulsing standby light AC30
  106. Ok, tube historians
  107. What does a blown speaker sound like??
  108. Help
  109. Circuit question regarding a higher gain preamp tube
  110. NOS tubes for Fender Vibro Champ
  111. Does Unused Solder Go Bad Over Time?
  112. high gain kicked in
  113. Anyone have a tube chart for the Vox AC-30 handwired?
  114. Zinky Superfly - Stuck with Sovtek 5881's?
  115. Mods for Epiphone Valve Junior
  116. Blackfacing a Bandmaster Reverb to AB 763 Vibroverb specs
  117. I Need EF86 Tube Help
  118. Help quick, Is this a good deal on a Princeton?
  119. Vibrations in chassis, but not on a cab?
  120. series/parallel wiring and output transformer
  121. Weber Mass 50 in parallel
  122. Wrong impedance!
  123. SLO-100 Warren Haynes Mod
  124. What are the best cheaper tube amps to practice mods on
  125. Trouble with Soldano Decatone - tubes?
  126. How does this work?
  127. Hot Rod Deluxe question?
  128. peavey XXX problem
  129. Best amp "feet'?
  130. Any technical info on Bogen Challenger CHB10?
  131. 12az7
  132. 6L6/5881 in a deluxe?
  133. Best brand and types of resistors and caps
  134. Recommend an internet dealer for a quad of EL-84s
  135. Help
  136. Power and Volume
  137. My opinion: Sylvania 12ax7 NOS sounds sick in V1
  138. Amps for Idiots.
  139. Fender low-end problem when using a tremolo pedal.
  140. any amp tech/modders in Texas?
  141. Pre-amp question(s) from a newbie to Amp tech...
  142. Do you have to bias pre-amp tubes?
  143. VOX AC-30 with O'Connors Recommendations
  144. Gibson Supergoldtone GA-30Rv died
  145. Anyone used Lowery labeled 12ax7s?
  146. Crackling noise in my Hybrid build
  147. Variac amp rating question
  148. O.K. Marshall experts, here's a strange one.
  149. Biasing EL34's
  150. tracking down hum and grounding
  151. Fender 59 reissue Bassman
  152. Very noisy amp, yuck!
  153. Need help with a subwoofer issue
  154. Quick tube pulling question (100w -> 50w)
  155. lee jackson mod DVD
  156. An ohm question....
  157. logo glue?
  158. Fender 75 mods?
  159. Marshall DSL201 problems
  160. rectifier tube retainers for an Orange AD15/12?
  161. Loose power tubes
  162. did a stupid thing, help.
  163. Congested ! 6CA7 Candidate ??
  164. Roland Bolt 60 question
  165. Tube RMS rating vs. SS
  166. Trouble getting Winged C el-34's
  167. Which Euro NOS tubes flash on startup?
  168. AC ADAPTOR question
  169. Question for amp builders
  170. Reducing the feedback inna Sup Reverb
  171. Tube guys?
  172. Please explain tube "ratings" to me.
  173. Having an audio output transformer replaced - which way to go?
  174. replacing transformers in tube amps
  175. PI plate resistor trimmers?
  176. JCM 900 5881 to EL34's
  177. Justify cleaning effects loop jacks.
  178. '61 Fender Reverb unit problems
  179. Need AC30 TBX technical help!
  180. '64 Super Reverb help! What kind of mod is this? Pics inside
  181. Master Volume Inquiry
  182. HELP!My tech says Mustard caps will add bottom end to my Marshall JCM800 2203x reisue
  183. Tung Sol 5881 Reissue
  184. Going from a GZ34 to 5Y3 in a 5E3
  185. Aluminum chassis?
  186. Question about Fender amp circuit designations.
  187. Blue Glow in the Tubes???
  188. Bench power supplies, signal generators, etc.
  189. Authentic Amperex 6L6GC's?
  190. Searching for NOS Mullard CV4004 for my V1 slot in my 2203x
  191. Running without a load
  192. Opinions on the newer KT66 tubes
  193. New Kingsnake. Bias problem?
  194. can you swap a 12by7 for an ax7?
  195. Ei Gold 12AX7's
  196. tube recommendations for new Fender 40th Anniversary Twin Reverb
  197. Kit recommendations, Please
  198. Silvertone 1484: Switching out the Reverb?
  199. EL34 to 6550 taste testing
  200. How to determine if a speaker works properly
  201. IEC Mullard question
  202. Ampeg SJ 12 T speaker connection
  203. Speaker cab design
  204. Will removing a power tube cut my power in half?
  205. Celestion, Eminence, VHT
  206. Which 6550 tubes?
  207. Question about draining caps
  208. marshall jmp mkII ?
  209. 12AU6 versus 6AU6
  210. Conversion 4xEL84 to 2xEL34
  211. Koch Help??
  212. Dating an old Fender speaker...
  213. OT and PT questions
  214. 2 to 3 prong power on Sunn 200S
  215. adjusting the voltage selector on a 69 marshall 20 watt head
  216. Grounding an old Supro
  217. Simple question - tube removal?
  218. Does anyone know what brand of power tranny is used in a fuchs lucky 7?
  219. Marshall 2203x HT Fuse blown. Should I check the Screen Resistors?new tubes?
  220. Let’s talk about screen grids.
  221. Blues Jr. mods to get it towards Blackface?
  222. Preamp tube works in one amp - not in another?
  223. Rewiring Engl from 230Volt to 120Volt?
  224. Tube swap question...
  225. !963 sears silvertone tube maker?
  226. FX Loop mod?
  227. Valco cathode biased?
  228. Can EL34's sound good at low volume?
  229. Tranny Q for Hiwatt
  230. Help: Engl SE With No Sound
  231. garnet questions
  232. preamp tubes
  233. Bias Test Point installation
  234. Possible Cold Solder Joint on Speaker
  235. Are 6AQ5-A and 6v6 tubes the same thing?
  236. just got new tubes and...
  237. Hooking up a speaker - stupid question
  238. Fender amp polarity help
  239. 63 Vibroverb RI upgrade suggestions ?
  240. John P, Trisonic, anybody: follow-up: correcting factoy bias on sf Vibro Champ
  241. Matchless tube help.....
  242. Impedence and stringing cabs together.
  243. IEC Connector, Rivets?
  244. Converting Marshall ptp PA to Lead
  245. Help installing Celestion G12H30 Heritage!
  246. Are my NOS RFT ECC83s /Thin plates for my Marshall?
  247. JTM45 upgrade Output Transformers
  248. Microphonic Tubes in Fuzz Box
  249. Best current Prod. 12AX7 Opinions..
  250. Please help me diagnose this amp noise...