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Marshall JMP-1
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Marshall JMP-1

Guitar amplification from Marshall .

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Oli_34160 Oli_34160
Publié le 01/06/10 à 14:02
For specifications and review the original preamp, see below. On mine, I made the change, Dr. Boost (chgt condos on the audio line - sixty, ceramic films cons - chgts 15v regulators, amplifiers chgts Ops - 10 in all, the OPA2132 and 4132 to replace TL72 and 74). I changed the lamps by EH and other minor changes to control the breath. At the exit, not really spectacular ... But over time, there is greater precision in arpeggios, sweeps in saturated crunch or even a little push. This is especially the crunch and clean as we gain a better definition. Breath less, sounds a bit more "hifi", more modern (OP amps and condos are certainly something). Warning! That remains the Marshall! In any case the sound is changed. But it becomes more versatile and flexible as thinner and better defined. Consequently, you discover other facets of his guitar playing that lead to other types of uses that most of Marshall. Modif - gear and MO included - must revolve around the 250 €. I made ​​myself a small fifty € uro by drawing samples from the component manufacturers (TI, National Semiconductors, etc.).. Warning! This type of change is still an adventure that n is not within reach of a beginner. It is better to master the solder and the practice of desoldering braid and desoldering pumps. So think carefully before you start it!

SOUNDS

I do rock, variety, jazz, blues, hard ... A little of everything .. what I use it with a Ampulator ADA (I have no amp) on a active speaker Thomann PA302. I think it sends just fine!
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