#Marshall jmp 50 full#
#Marshall jmp 50 mods#

The two extra holes next to the inputs worry me. Hardly and gain at all even with the preamp at 10. The Master and Preamp knobs are really reacting weird to what I expected from owning other master volume Marshalls. I will pull it a part again tomorrow and get some pictures. Here's the before pic.it was mess inside, like a monkey got in there and added jumpers, clipped leads, left components hanging on one end.surprised it still sounded decent:

#Marshall jmp 50 mods#

It's tough to find these things without mods though.Ĭan you post a clear chassis pic? I'll post a pic of the 'restored' chassis for you to compare. Michael_dba wrote:Right on! Cab does look good, not beat up or ripped.īummer it didn't scream right away. Photo.JPG (80.29 KiB) Viewed 5980 times JMP Home 2.JPG (571.03 KiB) Viewed 5978 times If I decide to keep it, I will restore it with 6550s’ and fix most of the issues. I think that I only have 9 days to return the amp back to Vintage GC so I will have to move quickly to decide whether to keep this or not. This weekend I plan to make a trip to an amp tech determine what’s going on and if it is worth the investment.

All this was done with the Master set to 2.

#Marshall jmp 50 full#

I also did not notice a lot of tone change rolling the treble, bass, middle, or presence knobs from full (10) on or off (0). Also with the master at 2 and the preamp backed down to 5 the volume drop was considerable. I really didn't get a chance to crank it, but with the master at 2, it was not as loud as I would have thought as compared to my old 4104 JCM800 and I really could not get much gain out of it even with the preamp all the way to 10. The bottom casters are missing and the amps has been changed over to E元4's.įiring it up, tubes all light up, no hums, but pots are a little scratchy. The speaker cloth only has one bad spot but no holes or tears. The cab is really in nice shape and so is the tolex. It appears have all the original components, transformers etc (I am no tech) but there are two extra holes on the top panel next to the two inputs that are plugged and one of the speakers output jacks is missing. Note that I bought this amp sight unseen from Guitar Center Vintage except for just a few pictures and knowing that I could return it if needed. The amp works perfectly and sounds good enough to easily justify its pricetag.Well, I picked up the new amp tonight, got her home, pulled it apart, and cleaned it up. Servicing involved replacing the power switch, testing and cleaning components and installing one aged control knob, but changing virtually nothing but the AC cord. Original tolex, handle, and feet are in great shape, replacement logo, original cover. Original transformers, original Brimar power tubes and Trigon 6CA7 preamp tubes. We’ve attached his service records to this listing. It has just been meticulously serviced, tested, measured and documented by Toronto’s Dom Tantalo on Instagram).

This example is in excellent condition and is nearly entirely original. If you’re after the tone of rock’s most important era, this is the amplifier that will take you there. From Jimi and Jimmy to Clapton and Beck, along with a seemingly endless list of some of the most influential rock guitarists the world has known, the JMP50 has been the amplifier of choice. The solid-state rectifier and EL-34 tubes combined to create an incredibly loud amp with serious punch and power out of the gates, without the sag that tube rectifiers create at high gain levels. From clean through crunch and onto a near-heavy metal distortion, the 50 watt JMP offered any sound a guitarist would want with the twist of a knob. The JMP50 watt Plexi 1987 Lead amplifiers built by Jim Marshall’s company in 1968/9 are considered by many to be the best amplifier since the original JTM45.