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Board index » Electric Guitar & Bass Construction

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jamesnv
PostPosted: Sun Jan 16, 2011 1:02 pm 
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Walnut
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hello, i have a bass with emg active P & jazz bass pickups, the precission pick up is shot and i was wondering what would happen if i switched the volume pot, installed a passive pickup and kept the active jazz pickup as is? thanks james
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peters instruments
PostPosted: Sun Jan 16, 2011 2:37 pm 
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jamesnv wrote:
hello, i have a bass with emg active P & jazz bass pickups, the precission pick up is shot and i was wondering what would happen if i switched the volume pot, installed a passive pickup and kept the active jazz pickup as is? thanks james


that depend entirely on how it is wired up.

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jamesnv
PostPosted: Sun Jan 16, 2011 4:20 pm 
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Walnut
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what if i wire the passive pickup with a 250K double stacked pot, for volume and tone, and wire it to the jack separate of the active pot ? thanks james
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peters instruments
PostPosted: Sun Jan 16, 2011 11:17 pm 
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i no wiring expert so maybe someone else can chime in here, but i think that that would work fine, although i dont know if you would run into issues playing the two together.

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Ti-Roux
PostPosted: Mon Jan 17, 2011 4:21 pm 
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I would not do this myself, 'cause there is too much different in tone and power between active and passsive. You should put another active P-bass, but, if you want, you could rewire it all to get the possibility to switch 'em two on a passive mode.

Check out Seymour Duncan website for many wiring diagrams, it could help you.

Francis

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theguitarwhisperer
PostPosted: Mon Jan 17, 2011 4:43 pm 
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You can possibly run an active pickup with a 250K pot, you might get feedback issues, but I wouldn't run a passive pickup on a 25K pot, might sound muddy.
It's not good to mismatch your impedances.
http://www.emginc.com/pages/support
Go to the "wiring questions" section, it has a response to your query specifically.

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alan stassforth
PostPosted: Mon Jan 17, 2011 8:20 pm 
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I'm pretty sure an active pup needs a 25k pot, and passive needs 250-500k.
So, you would need to have 2 volume controls as I see it.
I would go with active or passive, not the 2 together.
You might get varied volumes which might get to be a pain if you are playing a "show".
You know, switch to active and it's way louder, etc.
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jamesnv
PostPosted: Tue Jan 18, 2011 12:21 pm 
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Walnut
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thanks for the input, i think i will purchase another active pickup and be done with it. james
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