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 Post subject: 4003 pickups
 Post Posted: Wed Feb 06, 2008 6:24 am 
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Joined: Tue Feb 05, 2008 12:08 pm
Posts: 93
i was just curious if there is any difference between the neck and bridge pickups on a 4003?


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 Post subject: Re: 4003 pickups
 Post Posted: Wed Feb 06, 2008 10:09 am 
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Joined: Mon May 28, 2007 7:02 am
Posts: 859
Location: CA
On an new, stock 4003, no. They are exactly the same.


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 Post subject: Re: 4003 pickups
 Post Posted: Wed Feb 06, 2008 10:19 am 
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Joined: Thu Sep 22, 2005 1:00 pm
Posts: 1527
Location: S.W. Michigan
Not totally true. The bridge pickup has a larger magnet under the coil than the neck pickup. Both are wound to about 11.4K ohms. The bridge pole pieces are a tad wider spaced than the neck coil poles, at least on my 2004 bass.


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 Post subject: Re: 4003 pickups
 Post Posted: Wed Feb 06, 2008 10:55 am 
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thanks guys, i really appreciate it!


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 Post subject: Re: 4003 pickups
 Post Posted: Wed Feb 06, 2008 10:58 am 
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Joined: Tue Feb 05, 2008 12:08 pm
Posts: 93
ric seems to be only selling the neck pup, so should i just go with that and stick it in the treble position of my 4001?


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 Post subject: Re: 4003 pickups
 Post Posted: Wed Feb 06, 2008 1:57 pm 
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Joined: Thu Aug 11, 2005 1:00 pm
Posts: 908
Location: Kansas City, Missouri
To do that, you'd have to drill mounting holes in the bridge pickup plate and use spacers on both ends because the bottom of the neck pickup is not flat. I'd wait and get the new 4003 bridge pickup when it's available or look on Ebay.


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 Post subject: Re: 4003 pickups
 Post Posted: Wed Feb 06, 2008 8:31 pm 
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Joined: Wed Aug 10, 2005 1:00 pm
Posts: 1666
Location: Colorado
Is your 4001 treble pickup dead? The 4003 pickups are hotter than the 4001 pickups. 11k ohm vs 8k ohm. And you have to decide whether or not to keep or remove the capacitor.

For old 70s 4001 basses I like to keep the 2 original 8k ohm pickups and replace the 500k ohm tone pots with 250k ohm tone pots and remove the .0047 capacitor.

Or if you want to put in a 4003 treble high gain pickup then I would leave in the 500k ohm tone pots and again I would remove the capacitor.

Or you might consider the push pull circuit for the bypass of the .0047 capacitor.

And you might also think about a 4003 high gain for the neck so the pickups are more balanced.

Some other options are putting an hb1 pickup in the bridge position on you 4001 or putting a toaster in the neck position.

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 Post subject: Re: 4003 pickups
 Post Posted: Thu Feb 07, 2008 8:36 am 
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Joined: Tue Feb 05, 2008 12:08 pm
Posts: 93
actually i am putting a dimarzio model One in the neck, and thought it might balance better with a 4003 pickup as suposed to the lower gain 4001.


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 Post subject: Re: 4003 pickups
 Post Posted: Thu Feb 07, 2008 8:38 am 
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Joined: Tue Feb 05, 2008 12:08 pm
Posts: 93
also i think i am going to throw in a little toggle switch as a bypass for the capacitor.


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 Post subject: Re: 4003 pickups
 Post Posted: Thu Feb 07, 2008 8:53 am 
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Joined: Tue Feb 05, 2008 12:08 pm
Posts: 93
i am ready to get virtually yelled at for ruining a beautiful instrument by someone on here but i think it could turn out really cool


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