Turning Dimarzio Mud Lab into real Crunch Lab 7

[belensky]

7 sting version of Dimarzio pickups often uses base plate made of fibreglass with layer of cooper. I'm not really good in physics but fibreglass and copper creates some kind if magnetic interference that makes pickup to sound a bit more muddy than 6 stings versions of the same pickup(that uses nickel silver base plate) So by recommendation of my good friend, I decided to upgrade my Crunch Lab 7 and Liquefier7 with Nickel Silver Bass plates. Now pickups have a bit more clarity and top end. I hope it helps some of you. It's very easy upgrade.

 

[vel0c1ty]

Re: Turning Dimarzio Mud Lab into real Crunch Lab 7

Neither fiberglass or copper is magnetic. It was probably muddy due to wiring issues. Next time you have this problem, install a treble bleed circuit consisting of a 1nf capacitor and 150k resistor in parallel. That'll really brighten the pickup up.

 

[belensky]

Re: Turning Dimarzio Mud Lab into real Crunch Lab 7

it has nothing to do with wiring, what I was trying to say(and sorry for my bad English) is that materials like brass or fibreglass+ copper foil, besides not being magnetic still subject of magnetic interference because of Eddy currents that happened there due to conductivity
fiber glass with Cooper foil are even more conductive than brass, so they they change sound of pickup(eat up highs) even more..
nickel silver is not magnetic, and less conductive, so it doesn't has that intensive interference, so by putting Nickel silver plates(instead of fiber glass + copper, or brass) you getting more highs and more transparent sound. if you try Dimarzio crunch lab 7 and crunch lab 6 they will sound different not only due to dimensions but as well because of baseplates, crunch lab 6 – nickel silver, crunch lab 7 – fiber glass + copper foil

this isn't such a big difference, just a little cheap tweak that could help to prevent high loss, as well as treble bleed mode as you suggested.

 

[DavidRavenMoon]

Re: Turning Dimarzio Mud Lab into real Crunch Lab 7

it has nothing to do with wiring, what I was trying to say(and sorry for my bad English) is that materials like brass or fibreglass+ copper foil, besides not being magnetic still subject of magnetic interference because of Eddy currents that happened there due to conductivity
fiber glass with Cooper foil are even more conductive than brass, so they they change sound of pickup(eat up highs) even more..
nickel silver is not magnetic, and less conductive, so it doesn't has that intensive interference, so by putting Nickel silver plates(instead of fiber glass + copper, or brass) you getting more highs and more transparent sound. if you try Dimarzio crunch lab 7 and crunch lab 6 they will sound different not only due to dimensions but as well because of baseplates, crunch lab 6 – nickel silver, crunch lab 7 – fiber glass + copper foil

this isn't such a big difference, just a little cheap tweak that could help to prevent high loss, as well as treble bleed mode as you suggested.

Copper foil is not thick enough to generate eddy currents. Fiberglass is non conductive.

I said this in your other post.

Plus I hear no difference in your clips.


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[idsnowdog]

Re: Turning Dimarzio Mud Lab into real Crunch Lab 7

I have noticed the exact opposite with the 6 and 7 string version of the Evolution. The 7 string version sounds better than the brass baseplate 6 string version. However I will say that different baseplate materialsto make a difference in the tone of the pickup.

 

[DavidRavenMoon]

Re: Turning Dimarzio Mud Lab into real Crunch Lab 7

I have noticed the exact opposite with the 6 and 7 string version of the Evolution. The 7 string version sounds better than the brass baseplate 6 string version. However I will say that different baseplate materialsto make a difference in the tone of the pickup.

A brass baseplate can change the tone. It’s a bit more conductive than nickel silver (which is also an alloy of brass).

This is why Bill Lawrence didn’t use metallic baseplates. Not even on the Gibson “Super Humbucker” (tar back)

But copper foil won’t unless it’s a closed loop wrapped around the coils. It’s too thin.




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