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Old 06-08-2009, 11:23 PM   #1
SpinWheelz
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Poles vs. blades/rails

I'm curious to learn why poles seem to be preferred over blades/rails in pickup construction - why is that? What do poles get you in terms of pickup tonal quality that you don't with blades? Is it simply a cost thing? In the area of string bending, I would think that if a blade picks up vibrations all the along the course of that blade, wouldn't that be a better than poles that lose the signal when the strings are bent away from them?

Any insight?
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Old 06-08-2009, 11:32 PM   #2
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Re: Poles vs. blades/rails

I use EMG's. No pole pieces... no problem.



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Old 06-09-2009, 09:18 AM   #3
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Re: Poles vs. blades/rails

Great, thanks for explaining not a whole lot. Great plug, though.
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Old 06-09-2009, 09:36 AM   #4
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Re: Poles vs. blades/rails

Quote:
Originally Posted by WildeStarr View Post
I use EMG's. No pole pieces... no problem....
Quote:
Originally Posted by SpinWheelz View Post
Great, thanks for explaining not a whole lot....
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Old 06-09-2009, 09:54 AM   #5
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Re: Poles vs. blades/rails

Wildstar, it is just a cover. Chances are it looks like THIS
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Old 06-09-2009, 09:56 AM   #6
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Re: Poles vs. blades/rails

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Originally Posted by Paragon View Post
Wildstar, it is just a cover. Chances are it looks like THIS
Just post the photo, like THIS:

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Old 06-09-2009, 10:49 AM   #7
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Re: Poles vs. blades/rails

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Originally Posted by SpinWheelz View Post
Great, thanks for explaining not a whole lot. Great plug, though.
I explained everything you need to know. You just didn't understand.

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Old 06-09-2009, 12:16 PM   #8
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Re: Poles vs. blades/rails

I know very little but, here is a couple of things I have heard....

pole pieces allow for the adjustment of the volume of each area under the strings...

peolpe used to file their Charlie Christan PUs because the mids were too high....

but there is some loss of volume when a bent string moves away from the pole piece.....

this is what I have heard so how accurate these explanations are I do not know....
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Old 06-09-2009, 12:22 PM   #9
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Re: Poles vs. blades/rails

Well, if you think about it, the magnet poles are what is receiving vibrations from the string and in turn transmitting sound back to the amplifier. Now, as long as the string is directly over the pole, you will have the strongest reception off of said pole.

Bend a string, and the signal may get weaker, or it might be split between 2 poles depending on how hard you bend the string.

This isn't an issue with a blade since at no time does a string stray from a position away from a magnetic pole..(you're not focused on one pole position or being phased between 2 magnetic poles...the blade is just one long magnet set across the width of the pickup.)

From a technical perspective, this is going to offer superior reception off of the vibrations of the strings...HOWEVER, this doesn't necessarily mean that it will be the most pleasing to a player. It's the same argument with microphones: In essence, a pickup is a microphone, and a microphone that offers the most response and output isn't necessarily what is desired for a certain tone.

(Which is why a lot of people like the older microphones...same deal.)
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Old 06-09-2009, 12:37 PM   #10
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Re: Poles vs. blades/rails

Quote:
Originally Posted by dennistruckdriver View Post
Just post the photo, like THIS:
I know you like posting pics.. I think we all have figured that out by now . I leave that to you.. I like links at times.. lets ppl investigate for themselves.
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Old 06-10-2009, 08:10 AM   #11
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Re: Poles vs. blades/rails

The sound is different. The blades give you a more "Hi-fi" sound, the poles have a more complex behavior.
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Old 06-10-2009, 01:19 PM   #12
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Re: Poles vs. blades/rails

The pickup's concentrated or focused magnetic field through steel screws as 'pole pieces', essentially direct the magnetic flux into a small area where you want it, by a single string.

It's not the string that is inducing the current in the coil, it's the string's magnetic fields interferrence with the magnetic field around the coil that generates current. The strength (flux) and intensity (flux density) affect the pickup performance. Also a magnetic field drops off very rapidly with distance. Setting the correct height of the pickup magnets from the strings is crucial to performance, as is where the coil sits in the magnetic field.
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Old 06-10-2009, 01:21 PM   #13
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Re: Poles vs. blades/rails

Quote:
Originally Posted by Paragon View Post
I know you like posting pics.. I think we all have figured that out by now....I like links at times....lets ppl investigate for themselves.
'Ppl' don't want to 'investigate'; they want to see what you are talking about. If you have 'figured it out', then just post the photos.
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Old 06-10-2009, 01:22 PM   #14
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Re: Poles vs. blades/rails

Quote:
Originally Posted by SpinWheelz View Post
Great, thanks for explaining not a whole lot. Great plug, though.
hahahah!
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