Removing the Cover plate effects tone?

Greyum

New member
Hi, I have a pair of humbuckers with cover plates, I'm wondering if removing the cover plate will help them sound... less muddy?
 
Re: Removing the Cover plate effects tone?

Yes

Sent from my Pixel XL using Tapatalk
 
Re: Removing the Cover plate effects tone?

Generally, you can squeeze a little more high end out of them without covers, and possibly a little bit more output.
 
Re: Removing the Cover plate effects tone?

Before you start pulling covers off (which has a minor effect), try lowering the pickups to thin out the tone. Small adjustments, play for a time, adjust again.
 
Re: Removing the Cover plate effects tone?

Quality of the cover affects the amount of change. Low quality covers = big difference.
 
Re: Removing the Cover plate effects tone?

Quality of the cover affects the amount of change. Low quality covers = big difference.
Likely not the greatest quality...

Before you start pulling covers off (which has a minor effect), try lowering the pickups to thin out the tone. Small adjustments, play for a time, adjust again.
They are already pretty low, I'll see if going lower is possible.
 
Re: Removing the Cover plate effects tone?

I just assumed they were Duncans, my mistake. What brand/model are they?
 
Re: Removing the Cover plate effects tone?

The bad covers I think use a layer of copper after the forming to make the surface smooth for plating. High quality covers are ground smooth and don't have the layer. Its this middle layer that dulls the highs quite a bit.
 
Re: Removing the Cover plate effects tone?

Yup- on cheap import pickups removing the covers can make a significant difference.
For pickups that have better quality covers, the change is more subtle.
 
Re: Removing the Cover plate effects tone?

The bad covers I think use a layer of copper after the forming to make the surface smooth for plating. High quality covers are ground smooth and don't have the layer. Its this middle layer that dulls the highs quite a bit.
Alex, I'm close with an artisan that actually specializes in all kinds of platings, so he explained me the process in great detail.

For the record, the copper layer used is far too thin to affect tone in any way and it by no means should ever be considered as a sign of "bad quality" or ground to justify "bad tone". The reason of having it is doublefold: it helps to give the desired "mirror-like" effect when polished and to keep the plating firmly attached to the cover.

You can apply the plating to a highly polished raw nickelsilver cover without the copper layer, but it won't hold for long nor will ever have the "mirror-like" look, not even close; the "grain" is far too coarse.

It's the material used to make the covers that greatly affects tone, and that's brass, which, BTW, it's also needs to use a copper layer to be able to hold the nickel, gold or other plating material.

I've seen it myself by measuring the exact same p'up with no cover, raw nickel silver and the same raw nickel silver cover after the copper layer and nickel plating applied.

/Peter
 
Last edited:
Re: Removing the Cover plate effects tone?

Yup- on cheap import pickups removing the covers can make a significant difference.
For pickups that have better quality covers, the change is more subtle.

The only pickups I've been able to directly compare covers on vs off are Duncan '59s and Gibson '57 Classics. On the '59s there is a slight difference, but it's quite subtle. The '57s OTOH change pretty significantly with the covers removed. I'm not a fan of '57 Classics in general, but they aren't bad with the covers removed.

All IME of course as guitar, amp, playing style, etc may also have an affect.
 
Re: Removing the Cover plate effects tone?

Put on a thin hoodie with the loose hood up,,,,,,,then plug-in and adjust your amp to taste,,,,,,,,then just take the hood off.
That's about the difference you'll hear when removing covers and going to open-coil.

Same thing also works in reverse.
 
Back
Top