I opened up a Marshall JTM50 and…..surprise! Rats Nest! The wiring is very sloppy and neatness does count for many reasons in an amplifier. It also had the output transformer replaced some time ago. The owner wanted to replace it with a Mercury Magnetics unit, replace the filter caps and clean up the wiring. In the end the amp looked better inside and sounded better as well. I’m more of a Fender amp guy but these early Marshalls do sound gooood!
I used some waxed string to bundle all the appropriate wires together. I also added screen and control grid resistors which made the amp sound and feel more stable. For some reason both types of resistors appear to have been removed.
My shop is located at 1 Executive Dr Unit L Toms River, NJ 08755
Please feel free to email me if you have any questions or are in need of some tech work.
- Monday: 10am - 5pm
- Tuesday: 10am - 5pm
- Wednesday: Closed
- Thursday: 10am - 5pm
- Friday: 10am - 5pm
- Saturday 10am - 2pm. (I am in every other Saturday).
I am also an Eminence, Mercury Magnetics, Mojo Musical Supply dealer.
I do all the tech work myself so you deal directly with me. I am a one man shop and my hours can vary so please contact me to confirm that I will be open.
Email me: billy@300guitars.com
Call or text me: 848-218-0362
Shipping Info for all repair work:
Please ship all repairs to: 1 Executive Dr Unit L Toms River, NJ 08755
I am currently offering all phases of guitar work which includes:
- Set-ups
- Fret dressing
- Re-fretting
- New hand cut custom bone nuts & saddles
- Electronics work
And amplifier work which includes:
- Basic maintenance
- Bias adjustment
- Repairs and restorations
- Modifications
- And more....
Testimonials:
David Nicholas - The 20watt amp is sounding fantastic! Delivered the goods at the gig and I'm finding cool tones all over the place with it. Love the cab w Emenince Tonkerlites too- perfect for my sounds! Makes the 12 string sound like a grand piano!
Peter Lacis - I had an audition for something recently that was all about Led Zeppelin I -- my custom Pennalizer BLEW THE MINDS of the guys I was playing with. They couldn't believe the sounds coming out of that amp. That album was never in my mind when I came up with the idea....so that's yet another testament to the amazing work that you do.
Scott Goldberg - I am very satisfied with the set-up, and the fast turn around. With the "lower" action it feels easier to play. I will definitely spread the word.