caps for dual voice coil sub?

mhmacw
mhmacw Posts: 832
edited May 2010 in DIY, Mods & Tweaks
i have 2 40uf (+-6%),440v ,1000dc,50/60 hz. what will these do to my sub?
Post edited by mhmacw on
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  • FTGV
    FTGV Posts: 3,649
    edited May 2010
    Adding them in series with the voice coils will remove all the bass,so effectively turning your woofer into a midrange. .
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  • mhmacw
    mhmacw Posts: 832
    edited May 2010
    so i guess it doesnt work the same way with sub capps eh? ir they just arent big enough? also i meant 40 mfd not uf
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  • FTGV
    FTGV Posts: 3,649
    edited May 2010
    mhmacw wrote: »
    so i guess it doesnt work the same way with sub capps eh? ir they just arent big enough?

    I'm not sure what your refering to as "sub capps" but what are you wanting to achieve?
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  • mhmacw
    mhmacw Posts: 832
    edited May 2010
    i know cars have big capps for their subs i just figured these were lying around they might be good on my sub
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  • FTGV
    FTGV Posts: 3,649
    edited May 2010
    mhmacw wrote: »
    i know cars have big capps for their subs i just figured these were lying around they might be good on my sub

    Ahhh,gothca those big >1 farad caps are meant to be connected to the 12 volt power supply of the amplifier,not to the driver.Your little 40uf jobbies will not have any benificial effect.
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  • mhmacw
    mhmacw Posts: 832
    edited May 2010
    oh ok they are for the amps not the speakers in a car...its all coming clear haha.
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  • Fongolio
    Fongolio Posts: 3,516
    edited May 2010
    Big caps (greater than 1 Farad) help regulate the power supply to the amps under peak loads. They store voltage, that when needed during really heavy bass passages, can be released very fast, thus helping the battery and alternator not have to work so hard and, in theory, the lights not dim with every big bass hit.
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  • zingo
    zingo Posts: 11,258
    edited May 2010
    mhmacw wrote: »
    also i meant 40 mfd not uf

    Same thing. :)
    Jake
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