First off, I just want to say this is a great forum and I have found it to be an invaluable resource to all things Boogie. I am not technically the owner of anything Boogie at the moment, except for the entire set of internals to a Quad preamp. This was found many years ago at the practice spot of a band I just joined; they had no idea what it was (it was assumed that it was the circuit board to a PA mixer) and when they found out I built/worked on amps they said 'what can you do with this?' At first I had no idea what it was for either but I never refuse free components, especially all those nice orange drop caps! After I got it home and started cleaning the caked on dust off of it, I then realized 'Sweet Baby Jesus, it's a Mesa/Boogie!' Since then I had the intention of turning all those parts into something functional, most preferably a complete MarkIIC+; my dream amp practically from the time first I picked up a guitar. Time went on, and the drama of life made such ambitious ideas temporally obsolete until recently.
As a side note to this story, a little while before I joined that band I mentioned, I got the fantastic opportunity to work on a 1983 MarkIIC 100/60 watt 1x12 combo, serial number 11289; the guy was the original owner and loved the sound of it except for the reverb. My job with that amp was to change out the filter caps (all original) and tweak the reverb circuit a bit. When I got it home and plugged it in through my 4x12, I was absolutely floored, at that moment I officially fell in love with Boogie! In the process of working on that amp, I traced out a detailed schematic of it and documented everything, thus I became very familiar with the old Boogie's method of construction which has influenced me to this day as the PCB's I design share much in common with these early Boogies.
Back to more recently, I began to finally think more seriously about making good on my promise to make something of that disemboweled Quad preamp. My goal has been to as accurately as possible reproduce the chassis arrangement and PCB layouts. The research needed to do this has lead me to this forum as you guys have the highest quality of documentation and internal pictures. These pics have been invaluable towards this project as I have found a few things about the MarkIIC+ I never knew before and haven't seen documented anywhere.
As to the point of this thread............ In the numerous gut shots I have seen of nearly a dozen original factory MarkIIC+'s and my familiarity with the MarkIIC, I do believe I have reached an interesting conclusion (I'm sorry if this is already known information, but in my research nobody has yet said this explicitly)...........
That all MarkIIC+'s are modified MarkIIC's.
Looking at all these pictures of MarkIIC+ guts, the one occurring theme I've found is that circuit boards are not any different than that of the MarkIIC, and all the jumper wires and components that are attached off the board further prove this. This also explains in part why there were so few originals built (aside from the introduction of the MarkIII); the process was more labor intensive on top of the original method of PCB construction being a labor intensive process itself.
Sorry for the long thread, thanks for reading :wink:
As a side note to this story, a little while before I joined that band I mentioned, I got the fantastic opportunity to work on a 1983 MarkIIC 100/60 watt 1x12 combo, serial number 11289; the guy was the original owner and loved the sound of it except for the reverb. My job with that amp was to change out the filter caps (all original) and tweak the reverb circuit a bit. When I got it home and plugged it in through my 4x12, I was absolutely floored, at that moment I officially fell in love with Boogie! In the process of working on that amp, I traced out a detailed schematic of it and documented everything, thus I became very familiar with the old Boogie's method of construction which has influenced me to this day as the PCB's I design share much in common with these early Boogies.
Back to more recently, I began to finally think more seriously about making good on my promise to make something of that disemboweled Quad preamp. My goal has been to as accurately as possible reproduce the chassis arrangement and PCB layouts. The research needed to do this has lead me to this forum as you guys have the highest quality of documentation and internal pictures. These pics have been invaluable towards this project as I have found a few things about the MarkIIC+ I never knew before and haven't seen documented anywhere.
As to the point of this thread............ In the numerous gut shots I have seen of nearly a dozen original factory MarkIIC+'s and my familiarity with the MarkIIC, I do believe I have reached an interesting conclusion (I'm sorry if this is already known information, but in my research nobody has yet said this explicitly)...........
That all MarkIIC+'s are modified MarkIIC's.
Looking at all these pictures of MarkIIC+ guts, the one occurring theme I've found is that circuit boards are not any different than that of the MarkIIC, and all the jumper wires and components that are attached off the board further prove this. This also explains in part why there were so few originals built (aside from the introduction of the MarkIII); the process was more labor intensive on top of the original method of PCB construction being a labor intensive process itself.
Sorry for the long thread, thanks for reading :wink:
