Marshall 1987x rebuild
Posted: Sun Apr 29, 2018 4:33 pm
Hello guys! This is my first post here, decided to register as I have heard that there's a lot of people with insane amounts of knowledge on here, and have also read more than a few interesting topics.
I currently have a Marshall 1987x, which is a cool amp but it's a one trick pony to put it mildly... The volume/gain sounds good at one point only, where the bright cap is perfectly blended in/out. And with the bright cap disengaged it can get some cool clean tones, but that's about it. Back in Norway I have a Ceriatone 2204, and it's the best amp I've ever had. After inspecting PTP layouts of both amps it's clear that they are very similar, and the 2203x utilises the exact same PCB as the 1987x. The problem is that I am quite the noob, when I see a circuit diagram just showing where the signal goes I get completely confused and I don't have the time to learn it at this time, busy times and all that. I plan on eventually learning it, but I would prefer to not spend months reading up and down and sideways to do a small modification that I know I have the physical skills to do, I just don't know exactly what to do. Also I vastly prefer the learning-by-doing approach
So I was wondering, do any of you have, could make or know anyone who could make kind of a a step for step guide to what I have to do to convert the amp into a 2204 with the existing PCB? I was initially considering converting it to PTP, but that is quite expensive and seems unnecessary at this point. Turning the existing PCB into a 2204 shouldn't cost more than £10 tops, so if i want to turn it into PTP for modification purposes later it's not loads of money lost.
PS: this isn't a pristine clean, mint condition 1987x. It has already been modified with a fat switch, bright cap switch, one wire mod (on a switch as well) and a PPIMV, but I intend to reverse all of it and replace the fx loop with a NFB knob and something else. Just so you know that I'm not gonna ruin a relatively valuable amp (although it's not even worth that much in stock and mint condition, here in the UK).
I currently have a Marshall 1987x, which is a cool amp but it's a one trick pony to put it mildly... The volume/gain sounds good at one point only, where the bright cap is perfectly blended in/out. And with the bright cap disengaged it can get some cool clean tones, but that's about it. Back in Norway I have a Ceriatone 2204, and it's the best amp I've ever had. After inspecting PTP layouts of both amps it's clear that they are very similar, and the 2203x utilises the exact same PCB as the 1987x. The problem is that I am quite the noob, when I see a circuit diagram just showing where the signal goes I get completely confused and I don't have the time to learn it at this time, busy times and all that. I plan on eventually learning it, but I would prefer to not spend months reading up and down and sideways to do a small modification that I know I have the physical skills to do, I just don't know exactly what to do. Also I vastly prefer the learning-by-doing approach
So I was wondering, do any of you have, could make or know anyone who could make kind of a a step for step guide to what I have to do to convert the amp into a 2204 with the existing PCB? I was initially considering converting it to PTP, but that is quite expensive and seems unnecessary at this point. Turning the existing PCB into a 2204 shouldn't cost more than £10 tops, so if i want to turn it into PTP for modification purposes later it's not loads of money lost.
PS: this isn't a pristine clean, mint condition 1987x. It has already been modified with a fat switch, bright cap switch, one wire mod (on a switch as well) and a PPIMV, but I intend to reverse all of it and replace the fx loop with a NFB knob and something else. Just so you know that I'm not gonna ruin a relatively valuable amp (although it's not even worth that much in stock and mint condition, here in the UK).