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  1. Voltage browning out?
  2. Marshall Volume Question
  3. Biasing my Fender amps
  4. Best speaker for home use DRRI?
  5. building the best backline "house" amp
  6. Changing tone of the reverb on a Pro Reverb
  7. High Quality 9V power supplies ?
  8. do princeton reverbs have a bright cap ?
  9. Speaker vs Speaker - can someone please enlighten me?
  10. How do I install a speaker into a cab?
  11. 5AR4 VS GZ34 rectifiers Differences?
  12. Where to get o'scope probes?
  13. Surfbug - easy trem fix
  14. Is it ok to trim away part of the speaker frame?
  15. allen old flame
  16. Marshall 2550 Loop Problem-Help!
  17. Humming transformer?
  18. '65 Bassman; Bright Switch and Death Cap Questions
  19. 65 Fender Deluxe
  20. Power tube question
  21. speaker selection for a SFPR
  22. Multiple Heads with Multiple Cabs: Permanant Studio Setup
  23. Help with my New Valvetech Hayseed 30...
  24. 6BQ5 "re-labeled" by Packard Bell
  25. Front Grill Removal - 79 SF Twin
  26. Vintage Fender Blue Molded Caps - Source?
  27. What preamp tube is this (Vox branded) ?
  28. Pulling power tubes in cathode bias amp
  29. Cutting tolex corners...
  30. Can you run your amp's speaker and a cab?
  31. Tweed Deluxe: normal channel with tone up, or bright channel with tone lower?
  32. Old Flame cap values
  33. 5E3 OT readings
  34. Amp bulding classes
  35. Hot Cat Humming - Anybody Else Have This Problem?
  36. matchless dc-30 users - your HELP needed!!!
  37. Eh 5u4gb
  38. Can anyone direct me to Sylvania 6v6 GTA info?
  39. A question about Mesa LSC tweed setting.
  40. BFDR problem
  41. Isolating Amps/Combos on stage or shielding them...
  42. Is this the PI coupling cap?
  43. Voltage Divider to drop B+
  44. daisychain
  45. Palomino V16 Rattling Noise...Help...
  46. Amp died tonight - what should I check?
  47. Epiphone ea 15rvt deathcap
  48. What are these two caps in this Super?
  49. Tube Question....6V6 and 6L6
  50. Effect of bypass cap on tone.
  51. Current production 6L6 with most headroom?
  52. Fender 1966 Champ Cap too large?
  53. Static through my Hayseed: a plea
  54. Need advice on cab wiring...
  55. Recommend replacement filter caps for Marshall Jubilee
  56. 8 ohm tap for Peavy C30 head
  57. adjustable cathode bias resistor
  58. Princeton Tremelo ?
  59. Reverb Tank Mod's
  60. Preamp tubes-mix and match or the same?
  61. I'm looking for a "Free" site where I can
  62. Muddy and missing mid range, any ideas?
  63. Best attenuator for Super Reverb?
  64. To Solder or NOT to Solder - Speaker Connections
  65. I need help bad...
  66. Missio 5E3 Build...Andthe fun starts now...
  67. Pro Junior Biasing
  68. Silvertone 1481 combo amp, speaker ohm?
  69. 4 Ohm 2X12 cab to 8 ohm
  70. Diagnosing EL84 problems...
  71. /13 amp will not power up????
  72. Aiken Intruder Bias Questions EL34 to 6550
  73. good amp tech?
  74. SOS Help - My Vibrolux - beeps like an insane sumbmarine dive-dive-dive
  75. Jensen P8R or Weber vintage BA100
  76. using a Multimeter to test cables? Help??
  77. Curious - why exactly do tubes sound different?
  78. Can a fender amp be "brownfaced"
  79. is my tube shot?
  80. Best NOS tubes for 65amps London
  81. Blown speakers or bad speaker cable/cabling?
  82. Dummy load
  83. multi-section caps
  84. transformer shunt method using cheap multimeter
  85. Which schematic - '70 Twin Reverb?
  86. Biasing question -Rivera Chubster
  87. Grid Leakage in 12AX7?
  88. Anyone have experience with the THD Yellow Jacket converters?
  89. I need some help please...
  90. Yet another board building question
  91. Noob Question on Cath. Bias
  92. Help with tube IDs
  93. Musicmaster amp: Tonestack mods?
  94. Princeton reverb bass problem
  95. Where can I locate a Marshall
  96. AB763 "brown turd" caps - Question
  97. 5E3 Tweed DeLuxe voltages
  98. 5E3 Questions Part 19 1/2
  99. Music Man 212 Sixty-Five - Power Tubes
  100. Allen Accoplice Bias - Old Power Tube Question
  101. Any hope to find an old opticoupler for an Epiphone?
  102. Did My First Bias...Question...Problem? Help, Smart Guys!!
  103. Reverb and Vib on channel 1 mod
  104. 5E3 Output tube resistor question
  105. 5881 to EL34 conversion in a Marshall JCM 900
  106. Adding a FET buffer to a 1/4" -XLR matching transformer.
  107. Vox AC30cc no reverb??????
  108. Metallic rattle or whoosh from speaker??
  109. Need help biasing Marshall SLX with Ruby Tubes
  110. Tweed Super (5F4) rectfier alternatives...
  111. Odor when playing through newly rewired cab and speaker?
  112. marshall 6100 resonance control mod
  113. super reverb problem
  114. Gretsch Valco Twin Reverb 6162 Speaker impedance?
  115. Bandmaster reverb and trem on both channels
  116. Effect of lowering preamp voltage?
  117. Vintage Amp Overhaul - a tube noob in dire need of advice
  118. Busted pot on AC-15...
  119. Preamp for smoothing out?
  120. Ampeg SVT Intermittently blowing fuse
  121. Fender speaker Question.
  122. 65 Fender twin reissue
  123. Echoplex Question for Tech guys.
  124. 4 amp slo blo instead of 5 amp question
  125. Best amp repair guy in San Diego?
  126. Blown C12Q's RI in a Deluxe Reverb... Jensen Power Handling
  127. Moderate Volume Loss?!?!
  128. Help- Amp/Tubes damaged in shipping??
  129. Optocoupler spec.
  130. 5881's in a BF Twin?
  131. Bizarre drifting speaker impedance Jensen P12Q
  132. First Problem with Amp Kit ...HELP!!!
  133. 8 Ohm 2x12 Cabinet.... How?
  134. Look's like glitter in dropped tube?
  135. I need an amp tech asap around Albany, NY
  136. how do I tell what ohmage my amp is outputting?
  137. Hayseed 30 grounding issue?
  138. Grounding a Tweed Champ
  139. how to wire two cabinets in parallel
  140. Switching Tube In and Out of Circuit Question
  141. replacing Preamp tubes
  142. Choke wiring
  143. Oil stain on faceplate: leaky pot?
  144. 68 Dual Showman Head: Blackface or CBS circuit and other questions.
  145. Egnater amp clinic
  146. What does the spider do?
  147. Can anybody I.D. this 6CA7/EL34 tube?
  148. Deluxe Reverb RI Reverb Mod
  149. Reverb and tremolo quesitons (old Gibson amp)
  150. help me arrange my various NOS tubes in my 63 concert
  151. Stupid Speaker Out Question
  152. Good replacement for a Vintage 30?
  153. Replacing Tubes in my Dr. Z MazSr w/reverb
  154. Problem With My Super Sonic
  155. Weber bias rite meters
  156. Bandmaster reverb head help
  157. Help Finding Transformer Specs
  158. Does this kind of cable have a name?
  159. Follow up Help with New build
  160. Output transformer question...
  161. Can I put a Metro board into a Laney AOR?
  162. Ticking noise on reverb
  163. 10W out of one EL34?
  164. Newbie Tube Question
  165. Current Draw
  166. Rectifier Purchase Advice
  167. Choppy vibrato.
  168. weber caps
  169. Sound City blowing fuses
  170. Can you please tell me what the impedance is for this cab? (picture inside)
  171. Fender Princeton NR Power Problem
  172. Speaker Cabinet Question
  173. Bogner Shiva el34 2007 model problems, please help
  174. Tube Recommendations for 5E3
  175. DRRI OHMS Question
  176. Another goofy ohm thing...
  177. Have I Blown My Speaker??
  178. Weird resonance noise in a Bassman
  179. Does a Phase Inverter Tube affect tone/output?
  180. Help Please! Roland JC-50 rear panel?
  181. Question about Reverb Tanks
  182. Hakko 936 Help
  183. Not another PI thread.......
  184. Amp Kit Suggestions for Allmans Tone
  185. volume and tone knobs have no range
  186. Understanding the voltage readings I'm getting
  187. Can't Pull the Speakers Out of My Twin!?!
  188. Best amp repair in SF Bay Area?
  189. Weber Solid State Rectifier
  190. mods to a germino club 40?(vs jcm800 2204)
  191. Amp Buzz - Really Strange - ?
  192. JJ's 12ax7s
  193. Sovtek Mig 50 Hum
  194. Slight Boominess on 5E3
  195. Question about running 5881s in a BFTR
  196. favourite pre-amp tubes in a JTM45 ?
  197. Deluxe Reverb Chassis - How's it mounted?
  198. OK. My LAST question about SR mods!
  199. SF Vibrolux Biasing Question
  200. Pedals, voltage, and BLOWN POWER TUBES
  201. Very weird problem with my AC30 ???
  202. Ampeg VT40 - need some technical help
  203. Vintage 50's AMPEX 403-P Mic Pre-amp
  204. Is my Output Transformer going Bad
  205. 61 Ampeg Reverberocket needs Reverb Tweaking
  206. Need help installing 8A-125 speaker for SF Vibro Champ
  207. LDR's or Relays?
  208. 64' Deluxe, no noise!
  209. Bias pot failure
  210. Garnet Herzog - Good or Bad Idea?
  211. Noisy amp, any help appreciated
  212. Winged C's not Winged C's anymore?
  213. Preamp Tube Replacement ?
  214. ok... if I remember right, I lowered the value of the negative feedback resistor on a
  215. Do 'big' iron amps just flat out sound beefier than 'smaller' iron amps ?
  216. loud pop when switching to full power normal?
  217. Can I run 6v6's in my Pro Reverb?
  218. 6G4-A Brown Fender Super
  219. Marshall 1987x FX loop woes.. ;[
  220. Switchable Bias Resistors and Other Tweakables
  221. another preamp tube question.
  222. Amp Guru in Toronto?
  223. Laney LC15R and 1x12 cabinet:- bypass internal speaker defeat?
  224. Switch for cabinet impedance selection
  225. PSU question for amp designers
  226. Why do our amps buzz when the neighboring suite has their lights on?
  227. 65 Super Reverb Head Cabinet?
  228. Can you educate me on biasing?
  229. Transformer Schematic for Bad Cat Hot Cat 15
  230. Undesirable noise from tube amp
  231. Fender Bandmaster Blackface - what circuit?
  232. Adding an FX loop to Allen Old Flame?
  233. amp tech in NH or MA?
  234. Amp tremelo ?
  235. Stand-by not really standing by
  236. Best New Production 6550 or ?
  237. Vaunted Blue Mallory Caps....
  238. swapping a 5V4 for a 5AR4
  239. 25 or 50 watt 12F150 in my SFDR?
  240. TSL 60 Volume question
  241. Mojave Line out?
  242. Standby - tube saver at shut down??
  243. cleaning diaphragm on 1969 g12h30
  244. Help diagnose hum problem
  245. Any good places to buy parts in Toronto or...
  246. EVH 5150 III change to EL34's?
  247. Allen Transformer in '64 Princeton reverb.
  248. Fender HotRod Deluxe channel switching
  249. Engaging the vibrato in a BF Fender
  250. My first time biasing new tubes...