I do all my own work. I do all my own tolex and restoration work.
I also do all my own mods.
Gator 5150- added adjustable bias. older Ruby 6l6 str power tubes set to 40ma. Clarity and hiss reduction mod. Gain reduction mod. Upgraded screen resistors. Replaced all master volume pots. Fixed the clamping circuit to eliminate the channel switching pop...
Pinto 5150- added adjustable bias. The new design Ruby 6l6 str power tubes set to 40ma. Clarity and hiss reduction mod. Gain did not need reduction. For whatever reason is sounds awesome as is...
The Gecko 5150 2- fixed the adjustable bias circuit to correct the range. Power tubes are two TAD 6l6 short bottles and two new design Ruby STR 6l6s. Lead channel revoked to Marshall tone stack... Much better than stock.
I have a EVH block letter on the bench right now... It already has adjustable bias circuit added, upgraded screen resistors, hiss reduction mod and gain reduction. I am going to add a choke and noise reduction circuit.
Those 5150s are killer looking! Thanks again Psychodave for sharing the mods too. Since I've modded my 5150 I haven't used my DSL even once at practice or a gig. This thing has really grown on me. And damn this amp is loud! I was GASing for a straight cab so I could go full stack (so unnecessary but SO rock & roll) but it seems silly when you can't even really get into what I found to be the sweet spot with mine at normal gig volumes. Gig volume through my 5150 cab with Eminence Man O' War and Tonkers in an X pattern is about 2.5 to 3 on master. Even at that most sound guys want me to turn down.
Mine will smoke anything I have played... Fixing the bias works wonders first of all... We are an authorized service center so I have access to all the drawings and a tech to help me learn more. Some sound better than others. I suppose it is the tolerances on the caps in the tone stack and preamplifier tube section. Once the power section is correct it will not fall apart at volume like stock. The stock ones sound like crap to me now unless you just happen to get a real soft set of power tubes that just happen to bias correctly... Which would be tough...