View Full Version : Mods & Tweeks

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  1. Amp Mod for some More Gain?
  2. Bogen PA head for guitar? Help with pentode preamp stages.
  3. Another JTM60 1x12 thread/question... (haven't seen this one)
  4. Fender Blues Jnr Mk3 Mod
  5. What's this JCM800 mod do?
  6. What's this JCM800 mod do?
  7. Supro Inspired VVR Question
  8. MASSIVE improvement to Mesa Boogie SOB mod - How to add a real presence control
  9. Adding tube spring reverb to a Mesa Boogie SOB
  10. 5V4 instead of 5Y3 ?
  11. Bypass Digital Board in Super Champ XD (& possibly others)
  12. Epiphone valve standard to increase the treble
  13. Different Speaker Outputs On Marshall DSL 40C
  14. Help needed to upgrade Capacitors in a Marshall DSL 40C
  15. coupling cap to block some bass?
  16. Hicks mender
  17. 2015 VOX Ac30c2 service manual
  18. Drop preamp voltage
  19. Fun new zener tweak!
  20. Convert 5F6A Bassman into 5F8A Twin
  21. Blues Jr, any mods or advice available to convert tube mount pcb to hard wired?
  22. Newest Peavey Classic 30 - Blue Guitar Mods?
  23. Cathode bypass gain boost questions
  24. converting 6sc7 amp to use 6sl7
  25. 6CA7 tubes something different in the place of EL34 ??
  26. Remove ground lift network? JCM900 dual reverb
  27. Gallien Krueger MB150S-III adding Boost circuit ala GK MB150E-III
  28. JCM900 4500 Mod: C27 Jumper or...
  29. cathodyne/LTP switch (for small P-P amp)
  30. Replacing my tone control with an Orange-style shape control
  31. Project! Convert push/pull 'boost pot' to a footswitchable jack?
  32. Fender Twin bias dilema
  33. Fender Ultralinear - KT66, 77 or KT88?
  34. Improved circuit for power tube tremolo in a fixed-bias amp
  35. Bias test points for PCB amp
  36. Fender Frontman 65R volume mod
  37. Peavey Classic VTX 65 watt combo question for Enzo
  38. Eyelet boarding a reissue amp (Fender)
  39. Which switch for high voltage switching?
  40. Carvin Belair - moding one channel
  41. Sound differences from different dual op amps in SS amps
  42. De-biasing a Peavey Classic VT (6L6 output stage)
  43. Tonestack help
  44. add an attenuator to an existing tweeter?
  45. mesa mk IV bias
  46. Conversion to acoustic amp
  47. Taming Fender Blues Deluxe Abrupt Volume Control
  48. Switchable VTM 60/120
  49. SF Twin reverb Ultra linear transformer Blackfacing
  50. Age Old Problem of TOOO Bright Super Reverb
  51. Deeper voicing on EVH5150iii
  52. Different types of power resistors
  53. What cap value for this idea?
  54. Mesa Nomad 55 Reduce the gain
  55. Vox Escort Mains/Battery amp power upgrade?
  56. Possible wrong installation of diodes in place of a 6X4
  57. Taming a Gibson tone stack
  58. "Tighter" Bass on a Tone King.
  59. Peavey xxx upgrades
  60. Cable runs and effect on tone
  61. Help with mod to Crate FW65 Combo
  62. Mesa .50cal EL84 version bias pot mod
  63. Switch ratings for mods with high voltage
  64. Musicman 75 head 2100EX too much overdrive
  65. Marshall DSL mod
  66. Any ideas for a temperature controlled fan for Bass amp
  67. Traynor YBA-3 dummy load to use 8 ohm cabinet?
  68. Slitting speaker cone or knitting needle ? Kinks content
  69. Vox lead escort 50 - integrating valve stage
  70. LTPI on a 6G2?
  71. Adding a footswitch to a Blackstar HT-1
  72. Fender Deluxe 112 Plus Too LOUD
  73. JCM 2000 Marshall TSL 100 mod to DSL 100 Specs
  74. Built-in solid state reverb circuit for tube amp homebrew...
  75. Reduce treble in Fender Frontman 212r clean channel with circuit mod
  76. Silverfacing a Deluxe Reverb
  77. Crate Vintage Club 30 /50 Remove V1 from the dirt channel to reduce gain
  78. ROLAND BOLT 30- 60 cycle hum...
  79. Fender Bassman AA864 variant - mods
  80. Peavey 6505+ 112 mod for channel balance
  81. Peavey Valveking Modifications
  82. tightening up BF Princeton reverb ?
  83. Best way to increase bass response...
  84. E-Wave DG2-30RH head Clean channel too bright
  85. ENGL E320 clean vol mod
  86. Trem and Bias
  87. marshall 1987x hiss reduction possible?
  88. Slope resistor and cap changes when changing a CF side to a 12ay7/12au7
  89. I wish to modify the tone stack in my Ashdown Mag 300 head.
  90. Using 12AT7 instead of 12AX7
  91. Subbing 12AU7 for 12AX7
  92. Any thoughts on how to "soften" attack on a Fender Bassman ?
  93. Fender Blues Junior excessive treble
  94. Looking for less low-cut in Randall RVC (like RD5C)
  95. Marshall JCM 900 mod
  96. Modding reverb
  97. Marshall Split channel again (some interesting information)
  98. Changing rectifier in a Ceriatone 5f6A Bassman
  99. guitar amp ->PA =cabulator
  100. Optocoupler in Fender tremolo
  101. Bugera 1960 infinium Schematic
  102. Epiphone Valve Junior OT upgrade -- help please???
  103. Hall Amplification VVR3 in Selmer Treble & Bass 50 Mk3
  104. modifying the Fender Greta line out
  105. Wanna help with basic mods...
  106. B+ voltage drop via Zener/MOSFET question
  107. Minimum output impedance for Marshall Lead 12.
  108. Hammond drawbars - guitar
  109. Peavey Bravo modifications
  110. Hot Rod Deville upgrade
  111. Twin reverb new speakers
  112. 65 Princeton reverb reissue Power transformer pn# 75165 Where can I get one ??
  113. Converting a PCB Champion 600 to a handwired 5F1
  114. Magnatone M13 - Easy Gain Boost
  115. Marshall DSL 100 - Mod to Switchable (50/100 watts)
  116. Fender Hot Rod Deluxe volume pot replacement
  117. Peavey Classic 50 Blue Mods
  118. 12AU7 failed in Orange AD30
  119. Crate gxt-100 is now a BENGL two more related mods needed
  120. Line-In to Active EQ of Fender Super Twin?
  121. Peavey Bandit 65 mods, anyone have any good mods?
  122. Best SGRs?
  123. Fender Greta Tone Control Mod for Music Playing Purposes
  124. Switchable Cathode Bypass Cap help
  125. Adding another tube to a Crate GXT100
  126. 6V6 bias question
  127. Marshall JCM800 4210 Channel Switcher - modification - advice sought.
  128. My amp needs to be louder, said the novice
  129. Marshall Valvestate - Adding Cooling Fan?
  130. Help with Mesa mark V CH2 mod
  131. JCA22H too bright
  132. Crate Gxt-100 looking for any mods
  133. The beauty of a decade box: ab763 tweaks
  134. non-presence 12ax7 phase inverter
  135. bugera 333xl-212 tone stack mod + more
  136. Silverface to Blackface
  137. Rivera S120 Mods - Please Help!
  138. Orange tiny Terror fx loop mod ?
  139. Help on DIY F2B with mods
  140. Changing Plate resistor question.
  141. Compilation of BF Reverb Fender Mods
  142. Guild Thunderbass 50Watt power supply issues
  143. Dual independent bias for a Windsor
  144. Amp Maker SE5 extra gain stage
  145. large PI tail resistor
  146. Bucking Transformer Built In to Chassis
  147. Univox U45b Tremolo
  148. Jcm 2210 mod help
  149. VHT Special 6 Ultra Mods
  150. Mod/Tweak VHT Special 6 Combo
  151. CRATE VC-3112 4xEL84 to 2xEL84 mod?
  152. "Fender" remote reverb control Badabing ka-pow!
  153. A couple questions about Peavey Butcher mods (should also apply to VTM)
  154. 5F1 Champ Mods - component ratings?
  155. 68 Princeton Reverb Bias Mod Question
  156. Moving clean ch. Tonestack on a 2210. Good idea?
  157. Can I add a Piezo tweeter to Peavey KB100?
  158. L-pad question
  159. Blackstar HT-1 - Add reverb?
  160. Useful Matchless Cluman mods?
  161. Line 100v amp conversion ?
  162. Add choke to blues junior (mexico)
  163. Music Man RD50 112 6l6 to 6v6
  164. LOW Gain !
  165. Looking for Bright options...
  166. DSL 401 mods
  167. prosonic combo weak reverb
  168. Marshall AVT50 cd input too loud
  169. Princeton 112 Plus - Shutdown MOD
  170. Fender Bassman output waveform oscillations
  171. PPIMV in SF Twin 135
  172. Uberschall channel balance
  173. Modifying Princeton 112 plus - Make Dirty Channel Versatile Clean Channel
  174. Fender princeton 112 solid state too loud!!
  175. Converting AA371 Basssman to best sounding circuit for guitar- which one ?
  176. Bugera v22 mod questions from a beginner
  177. Mustang III
  178. Connect a combo amp to a 4x12 cab.. Can it be done?
  179. need to add an Fx loop to valve amp ?
  180. Mesa boogie Nomad 100 new speaker reqd
  181. Marshall 1987X. customer says too loud
  182. Help me please
  183. Anyone know where to get the Fender silverface push/pull master volume pots?
  184. What Have I Done??? Orange Rocker 30 OT Swap
  185. Adding Midrange control to this tone circuit
  186. Effects loop wont work ?????
  187. I know, Valvestate 150 mod to make clean channel worth using?
  188. FX Loop problems
  189. Univox U200B
  190. El 84 fixed bias amp & Paul Ruby zener mod.
  191. Fender Blues jnr Too much treble
  192. Switching jack needed?
  193. Marshall JCM 800 2204 FX loop advice
  194. Question about gain staging
  195. tube saving power up tweaks?
  196. Mark Moyer mods to "Custom" Vibrolux Reverb
  197. Adding a choke to Ampeg V-4 power supply?
  198. Using Kalamazoo Model One as a preamp.
  199. Older Traynor YCV40 Master Mod.....again
  200. triode/pentode high/low power switch
  201. Peavey Classic 30 Cathode Bias / Half wattage mod
  202. BF Fender VibroVerb and Deluxe Reverb double note intermod at 15 Fret
  203. Lowering the Voltage on Traynor YBA-1
  204. 1996 Marshall 1959SLP Reissue
  205. Volume pots with power switches
  206. Factory bulletins on the Fender Princeton 112+? Nope but here are some mods I did
  207. Mods for Fender Champion 30
  208. EL84 NFB
  209. HRD Fromel Mod
  210. Dana Hall's VVR Install: Marshall 50 watt Plexi 1987x
  211. 1968 Bandmaster TFL5005 amp cabinet swap
  212. 5e3 Internal jumpering on an on/off switch
  213. Fender Hot Rod Deville 410
  214. Tone control lift for an 18 watter
  215. adding tweeter to 2x10 bass cabinet
  216. boosting highs/ adding presence control?
  217. fender bright swith help
  218. 5F2-A Build - Help with -NFB and Pull Switch
  219. Marshall 18 watt TMB mods?
  220. Super Champ XD harsh treble--any popular mods?
  221. Vox Lil Night Train Fizzy Overdrive
  222. Fender Dual Showman Tremolo clicking and speed issues
  223. Too Much Compression - Heavy Squish - Parallel 12ay7 Tweed Style
  224. Replacing & interchanging reverb tanks
  225. Mod Troubles !
  226. External bias jack
  227. variable slope mod
  228. Mod fender vibrato circuit???
  229. cathode R value
  230. Cause of distortion pedal fizz on certain amps?
  231. Can two single ended OT's be wired for push pull use?
  232. BITMO mod for Valve Jr
  233. the bright cap (blues jr or any other amp w/one)
  234. Bassman 100 Filter cap help
  235. Fender blues jr - convert to cathode bias?
  236. Fender Champion 600 mod help...
  237. Tweed Deluxe Mods -- HELP!!!
  238. Remote controolled reverb on a Bassman????
  239. CLASSICTONE-50w-OT-Transformer for Marshall?
  240. I thought of using a 12AY7 in my SF Champ homebrew instead of a 12AX7
  241. Cascode/Triode Switch?
  242. Peavey Encore 65 Service, and Upgrade or Mods ?
  243. Orange Drop Caps vs. Ceramic Disk?
  244. Power Tube change questions
  245. Question in regards to treble bleed resistor
  246. Matchless spitfire clone?
  247. Peavey Delta Blues to Hi Gainer
  248. Robert M. Martinelli Vox Pathfinder mods
  249. Laney LC15R - too much heat - should I install a fan ?
  250. Ok to run only 2 KT88s in Fender Twin