Even so, it was kind of hard to tell if there was much of a difference because of cap type changes but it is hard to A/B without two units.īut put back together and putting a new JJ803S in V1 and a Mesa 12AX7A in V2, everything sounds pretty good. For example, the 1u Presence measured as 8u on my meter. In pulling some of the tone caps, I found a couple that did not test very good. I think this is the area where you'd want to experiment the most with some values if you want significant change. It does take some of the over the top OD edge off. I'd say this is kind of a middle ground on the gain changes I would think (plus some parts I had on hand). I used a 150K Carbon Comp in R126 and 1.5K Gold lead Mepco in R124.
#Marshall jmp 1 mods#
I played around with all these mods except the IC31 pin which would be hard to reverse. I just picked up a broken JMP-1 this month and after reviving it with a new transformer, I just tried out some of these mods with parts on hand. I've been making and modding amps and pedals over the last few years so this is a great site to find and I am very fortunate to find this post in my first look. It helps being consistent, to allow you to focus on your playing rather than chasing tone and constantly having to adapt to new stuff.First post here. Hemer: I think it’s a good thing to find the gear that suits you fine as early as possible, learn to use it and then stick to it. And I think I would only change it if Marshall released a new JMP-2 or another preamp that would outdo the JMP-1.Īny final thoughts or comments on the gear?
#Marshall jmp 1 full#
I always use the same setting: a JCM800 program on the JMP-1 with everything full up except the mids and the presence full up on the 5100. Hemer: I switched from the JCM800s to the rack system in the middle of the recording of Horizon’s The Sky’s the Limit back in the early 2000s. How long have you had it, how do you use it, would you ever change it? Marshall’s current E元4 50/50 power amp is also awesome but the 5100 has a little more aggressive edge to it that I do prefer. Cons are that both the JMP-1 and the 5100 were discontinued a few years back and I have to stock spares. Hemer: The pros are that it’s simply the best amp tone in the world for me as well as extremely reliable gear. So I switched for the rack system that allows me to get the same genuine Marshall tone with much less noise because the JMP-1 delivers enough gain for most of my parts and I just need the SD-1 – with a soft setting – to add a little extra gain on some solos. Before using rack elements, I was using JCM800 heads, whose tone was also great, but I had to keep my Boss SD-1 pedal constantly on to get all the gain I need and this tended to make the whole system so noisy that gating was complicated. Almost like I also learned to play the amp.
Hemer: Marshalls, in general, are the only choice for me because I started using them in my early teens and their particular response had a strong influence on the development of my playing. What about it makes it so important to you? Anyway, if I had to choose the most essential one, I would probably choose my Marshall Amplification system composed of a JMP-1 preamp, a 5100 power amp and 1960 cabinets.
Hemer: It’s a difficult question because my signature sound is the combination of several different elements, including guitars, pickups, amplification, and sometimes pedals, which are all extremely important. What one piece of gear do you use to obtain your signature sound? Hemer took a moment to speak with me and tell me what one piece of gear he uses to obtain his truly unique sound. He has toured the globe, performed with many well-known artists, both on stage and in the studio, and is perhaps best known for his work with the German metal band, Horizon. Patrick Hemer is one of the most respected guitarists in the world of hard rock.
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