View Full Version : Mods & Tweaks

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  1. Hum/Noise vs shielded cable or twisted wires in a Peavey Triumph 60
  2. A bit confused about V1 and V2 in my Mesa F-50
  3. LED activation from 5v winding?
  4. advice on more bass and treble from "Micro Champ"
  5. effects loop idea
  6. question about mods to valve amps
  7. Inexpensive L-Pads...
  8. Change led color and some mod to footswitch
  9. Hammond / Everett AO-50 conversion to Vox AC15
  10. Mesa Boogie F-50.. what is this?
  11. Question about using relays for foot s/w
  12. Bugera V22 Infinium CHOKE mod
  13. Opinions on a relay activated volume boost
  14. Bright Switch/Cap Wiring
  15. would a Master Volume solve my issue?
  16. MOSFET PI, how to Bias?
  17. Fender M80 Overdrive Channel
  18. Ampeg Ba 210 SP High EQ mod?
  19. Can't Turn Volume Completely Off
  20. Solder Both Sides of PCB?
  21. Adding gain stage to Marshall 2203; handling the 10k cold clipped stage
  22. Adding an on/off reverb switch to vintage amp
  23. Fender Twin Reverb
  24. DSL 100: Changing Grid Blockers and Bias Resistors
  25. Mesa Boogie SPAX7 in a Peavey Valve King Head.
  26. Effects loop on a AC15CHWX
  27. New AB763 Blackface Mods Page (includes DRRI & 68 CDR)
  28. Ampeg B-15 Preamp...
  29. Modding Boost Switch on Bugera V22
  30. 65 Blackface Fender Showman PPIMV
  31. Peavey Valve King 112 Dynamics/Attack/Gain fuzz MOD
  32. Final tweaking of a 1959SLP Re-issue..
  33. JTM60/JCM600 important MODS
  34. Adding a choke to Sovtek Mig 60
  35. I wish I had one of these years ago - '71 Traynor YBA-1 gets Plexi modded ** CLIP **
  36. Peavey Triumph 60 Hum
  37. Fender Frontman Mod.
  38. Removing power valves to reduce output
  39. Fender Reverb Mods
  40. Vox DA5 lineout modification - speaker bypass
  41. Princeton 112 Plus - 50k 15A Volume Pot Mod - Part Number And Source Needed, Please
  42. Possible to add NFB to this schematic?
  43. lower wattage in 5E7A tweed pro?
  44. Peavey Classic 50 Blue Guitar Mods
  45. I think it's attenuater time
  46. Pushing V2 harder within older fenders. Pre-amp clipping mod?
  47. Bassman AA568 unused triode applications
  48. Super Reverb '65 RI - Changing Output Transformer to Match Speaker Load
  49. Log/ Lin Bass Pot (DlxRev).
  50. EL34 in a Champ?
  51. Blackstar Artisan 100 circuit PPIMV and FX Loop Mods
  52. 6150+ Mods and a real engineer guitarist!
  53. Adding Filament Transformer to Sovtek Mig-50. How to place it?
  54. Thank you Valvewizard - Ground, hum blocking
  55. Replacement speakers poll
  56. Bias points
  57. 5150 bias mod
  58. Fender Pro Jr More Bass
  59. Trying New Speakers/replacements
  60. Marshall Amp increase Bass/low-mid response
  61. Can y'all help me with a minor mod to a Peavey Rage 158?
  62. Relay wiring for Vox Night Train mod
  63. Adding additional input output to Line6 spider ii amp
  64. Suggestion for moderator - let's spell "Tweeks" correctly!
  65. Looking for more gain mod schematic jcm800 2210
  66. Negative feedback loop mod for Pro Reverb
  67. Using Combo amp Speaker as Cab
  68. Marshall JVM
  69. Are SoZo blue caps the same as Fender blue caps?
  70. Line out help please
  71. I want to reduce the gain in my Peavey Rage 158.
  72. help with some peavey XXX mods
  73. Simplest way to turn a combo amp into both a head and a cab as well?
  74. Amp Mod for some More Gain?
  75. Bogen PA head for guitar? Help with pentode preamp stages.
  76. Another JTM60 1x12 thread/question... (haven't seen this one)
  77. Fender Blues Jnr Mk3 Mod
  78. What's this JCM800 mod do?
  79. What's this JCM800 mod do?
  80. Supro Inspired VVR Question
  81. MASSIVE improvement to Mesa Boogie SOB mod - How to add a real presence control
  82. Adding tube spring reverb to a Mesa Boogie SOB
  83. 5V4 instead of 5Y3 ?
  84. Bypass Digital Board in Super Champ XD (& possibly others)
  85. Epiphone valve standard to increase the treble
  86. Different Speaker Outputs On Marshall DSL 40C
  87. Help needed to upgrade Capacitors in a Marshall DSL 40C
  88. coupling cap to block some bass?
  89. Hicks mender
  90. 2015 VOX Ac30c2 service manual
  91. Drop preamp voltage
  92. Fun new zener tweak!
  93. Convert 5F6A Bassman into 5F8A Twin
  94. Blues Jr, any mods or advice available to convert tube mount pcb to hard wired?
  95. Newest Peavey Classic 30 - Blue Guitar Mods?
  96. Cathode bypass gain boost questions
  97. converting 6sc7 amp to use 6sl7
  98. 6CA7 tubes something different in the place of EL34 ??
  99. Remove ground lift network? JCM900 dual reverb
  100. Gallien Krueger MB150S-III adding Boost circuit ala GK MB150E-III
  101. JCM900 4500 Mod: C27 Jumper or...
  102. cathodyne/LTP switch (for small P-P amp)
  103. Replacing my tone control with an Orange-style shape control
  104. Project! Convert push/pull 'boost pot' to a footswitchable jack?
  105. Fender Twin bias dilema
  106. Fender Ultralinear - KT66, 77 or KT88?
  107. Improved circuit for power tube tremolo in a fixed-bias amp
  108. Bias test points for PCB amp
  109. Fender Frontman 65R volume mod
  110. Peavey Classic VTX 65 watt combo question for Enzo
  111. Eyelet boarding a reissue amp (Fender)
  112. Which switch for high voltage switching?
  113. Carvin Belair - moding one channel
  114. Sound differences from different dual op amps in SS amps
  115. De-biasing a Peavey Classic VT (6L6 output stage)
  116. Tonestack help
  117. add an attenuator to an existing tweeter?
  118. mesa mk IV bias
  119. Conversion to acoustic amp
  120. Taming Fender Blues Deluxe Abrupt Volume Control
  121. Switchable VTM 60/120
  122. SF Twin reverb Ultra linear transformer Blackfacing
  123. Age Old Problem of TOOO Bright Super Reverb
  124. Deeper voicing on EVH5150iii
  125. Different types of power resistors
  126. What cap value for this idea?
  127. Mesa Nomad 55 Reduce the gain
  128. Vox Escort Mains/Battery amp power upgrade?
  129. Possible wrong installation of diodes in place of a 6X4
  130. Taming a Gibson tone stack
  131. "Tighter" Bass on a Tone King.
  132. Peavey xxx upgrades
  133. Cable runs and effect on tone
  134. Help with mod to Crate FW65 Combo
  135. Mesa .50cal EL84 version bias pot mod
  136. Switch ratings for mods with high voltage
  137. Musicman 75 head 2100EX too much overdrive
  138. Marshall DSL mod
  139. Any ideas for a temperature controlled fan for Bass amp
  140. Traynor YBA-3 dummy load to use 8 ohm cabinet?
  141. Slitting speaker cone or knitting needle ? Kinks content
  142. Vox lead escort 50 - integrating valve stage
  143. LTPI on a 6G2?
  144. Adding a footswitch to a Blackstar HT-1
  145. Fender Deluxe 112 Plus Too LOUD
  146. JCM 2000 Marshall TSL 100 mod to DSL 100 Specs
  147. Built-in solid state reverb circuit for tube amp homebrew...
  148. Reduce treble in Fender Frontman 212r clean channel with circuit mod
  149. Silverfacing a Deluxe Reverb
  150. Crate Vintage Club 30 /50 Remove V1 from the dirt channel to reduce gain
  151. ROLAND BOLT 30- 60 cycle hum...
  152. Fender Bassman AA864 variant - mods
  153. Peavey 6505+ 112 mod for channel balance
  154. Peavey Valveking Modifications
  155. tightening up BF Princeton reverb ?
  156. Best way to increase bass response...
  157. E-Wave DG2-30RH head Clean channel too bright
  158. ENGL E320 clean vol mod
  159. Trem and Bias
  160. marshall 1987x hiss reduction possible?
  161. Slope resistor and cap changes when changing a CF side to a 12ay7/12au7
  162. I wish to modify the tone stack in my Ashdown Mag 300 head.
  163. Using 12AT7 instead of 12AX7
  164. Subbing 12AU7 for 12AX7
  165. Any thoughts on how to "soften" attack on a Fender Bassman ?
  166. Fender Blues Junior excessive treble
  167. Looking for less low-cut in Randall RVC (like RD5C)
  168. Marshall JCM 900 mod
  169. Modding reverb
  170. Marshall Split channel again (some interesting information)
  171. Changing rectifier in a Ceriatone 5f6A Bassman
  172. guitar amp ->PA =cabulator
  173. Optocoupler in Fender tremolo
  174. Bugera 1960 infinium Schematic
  175. Epiphone Valve Junior OT upgrade -- help please???
  176. Hall Amplification VVR3 in Selmer Treble & Bass 50 Mk3
  177. modifying the Fender Greta line out
  178. Wanna help with basic mods...
  179. B+ voltage drop via Zener/MOSFET question
  180. Minimum output impedance for Marshall Lead 12.
  181. Hammond drawbars - guitar
  182. Peavey Bravo modifications
  183. Hot Rod Deville upgrade
  184. Twin reverb new speakers
  185. 65 Princeton reverb reissue Power transformer pn# 75165 Where can I get one ??
  186. Converting a PCB Champion 600 to a handwired 5F1
  187. Magnatone M13 - Easy Gain Boost
  188. Marshall DSL 100 - Mod to Switchable (50/100 watts)
  189. Fender Hot Rod Deluxe volume pot replacement
  190. Peavey Classic 50 Blue Mods
  191. 12AU7 failed in Orange AD30
  192. Crate gxt-100 is now a BENGL two more related mods needed
  193. Line-In to Active EQ of Fender Super Twin?
  194. Peavey Bandit 65 mods, anyone have any good mods?
  195. Best SGRs?
  196. Fender Greta Tone Control Mod for Music Playing Purposes
  197. Switchable Cathode Bypass Cap help
  198. Adding another tube to a Crate GXT100
  199. 6V6 bias question
  200. Marshall JCM800 4210 Channel Switcher - modification - advice sought.
  201. My amp needs to be louder, said the novice
  202. Marshall Valvestate - Adding Cooling Fan?
  203. Help with Mesa mark V CH2 mod
  204. JCA22H too bright
  205. Crate Gxt-100 looking for any mods
  206. The beauty of a decade box: ab763 tweaks
  207. non-presence 12ax7 phase inverter
  208. bugera 333xl-212 tone stack mod + more
  209. Silverface to Blackface
  210. Rivera S120 Mods - Please Help!
  211. Orange tiny Terror fx loop mod ?
  212. Help on DIY F2B with mods
  213. Changing Plate resistor question.
  214. Compilation of BF Reverb Fender Mods
  215. Guild Thunderbass 50Watt power supply issues
  216. Dual independent bias for a Windsor
  217. Amp Maker SE5 extra gain stage
  218. large PI tail resistor
  219. Bucking Transformer Built In to Chassis
  220. Univox U45b Tremolo
  221. Jcm 2210 mod help
  222. VHT Special 6 Ultra Mods
  223. Mod/Tweak VHT Special 6 Combo
  224. CRATE VC-3112 4xEL84 to 2xEL84 mod?
  225. "Fender" remote reverb control Badabing ka-pow!
  226. A couple questions about Peavey Butcher mods (should also apply to VTM)
  227. 5F1 Champ Mods - component ratings?
  228. 68 Princeton Reverb Bias Mod Question
  229. Moving clean ch. Tonestack on a 2210. Good idea?
  230. Can I add a Piezo tweeter to Peavey KB100?
  231. L-pad question
  232. Blackstar HT-1 - Add reverb?
  233. Useful Matchless Cluman mods?
  234. Line 100v amp conversion ?
  235. Add choke to blues junior (mexico)
  236. Music Man RD50 112 6l6 to 6v6
  237. LOW Gain !
  238. Looking for Bright options...
  239. DSL 401 mods
  240. prosonic combo weak reverb
  241. Marshall AVT50 cd input too loud
  242. Princeton 112 Plus - Shutdown MOD
  243. Fender Bassman output waveform oscillations
  244. PPIMV in SF Twin 135
  245. Uberschall channel balance
  246. Modifying Princeton 112 plus - Make Dirty Channel Versatile Clean Channel
  247. Fender princeton 112 solid state too loud!!
  248. Converting AA371 Basssman to best sounding circuit for guitar- which one ?
  249. Bugera v22 mod questions from a beginner
  250. Mustang III