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Guitars, Gear, Tone!
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PostPosted: Sun, Mar 03, 2019 2:57pm 
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Image

Before the mods.
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After the mods.
Image

1971 JMP Marshall Super Lead - One Wire Mod and a couple of circuit tweaks.

This is one I own. I wanted to keep the circuit as stock as possible and very easy to reverse. So I designed this "71 mod" for this old girl and also for my musical needs.
This is not my "Plexi R/T mod. The two are different. The R/T mod is more like an old JMP Super Bass circuit.
If you want to try this out in your old Marshall Super Lead, click on the link for more detailed info.
Image
This is what it sounds like. :)

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PostPosted: Sun, Mar 03, 2019 3:06pm 
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That tone reminds me of early Adam Jones Tool tone!

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PostPosted: Sun, Mar 03, 2019 3:55pm 
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I like it... sounds like it has a bit more clarity and crispness to it. What are the V1A V1B coupling cap values? It looks like .022uf V1a / .0022uf V1B judging by the size of the mustard caps in the pic? I

and there is 100K resistor after the 68K mixers?


Last edited by harddriver on Sun, Mar 03, 2019 4:19pm, edited 1 time in total.

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PostPosted: Sun, Mar 03, 2019 4:11pm 
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Wow. That sounds fantastic! Great stuff Michael. I'm still loving my Major with the RT mod.


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PostPosted: Sun, Mar 03, 2019 4:23pm 
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sutepaj wrote:
That tone reminds me of early Adam Jones Tool tone!


That's very kind of you to say, thank you. :thumbsup:

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PostPosted: Sun, Mar 03, 2019 4:33pm 
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harddriver wrote:
I like it... sounds like it has a bit more clarity and crispness to it. What are the V1A V1B coupling cap values? It looks like .022uf V1a / .0022uf V1B judging by the size of the mustard caps in the pic? I

and there is 100K resistor after the 68K mixers?



Thank you for watching the clip. :thumbsup:

Both V1A - V1B coupling cap values are .0022uF.

The 100k is joined to the center wiper of Vol 2 pot and the other end is joined to where the Channel 1 input resisters (68K) meet each other.
The 100k reduces some of the gain and is a sweet spot in my amp. You can use anywhere from 100k to 1meg to find which sound best in your amp.
Sometimes I use no resistor at all in this location.

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PostPosted: Sun, Mar 03, 2019 4:34pm 
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littleguitars wrote:
Wow. That sounds fantastic! Great stuff Michael. I'm still loving my Major with the RT mod.


Thanks a ton my friend. :thumbsup:
I'm so glad the R/T modded Major is working out for you so well. :thumbsup:

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PostPosted: Mon, Mar 04, 2019 2:03am 
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Juicy! Especially the section from about :08 to :50. Some Badlands feels there.

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PostPosted: Mon, Mar 04, 2019 12:06pm 
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Tronald Dump wrote:
Juicy! Especially the section from about :08 to :50. Some Badlands feels there.


Ahh, that's very kind of you to say.
I love Jake E Lee's sound. :thumbsup:

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PostPosted: Mon, Mar 04, 2019 12:24pm 
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Sounds sizzle-licious! Great work as usual Michael. Rock on brother.

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PostPosted: Mon, Mar 04, 2019 5:03pm 
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Fret-Shredder wrote:
Sounds sizzle-licious! Great work as usual Michael. Rock on brother.


Cheers Bro!!
I appreciate the kindness. :thumbsup:

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PostPosted: Sat, Mar 16, 2019 10:30pm 
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