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Reload Thread: Active vs. Passive: An attempt by me to explain

  1. #46
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    Re: Active vs. Passive: An attempt by me to explain

    Quote Originally Posted by Eugenics View Post
    two years later and still such a great tutorial. the ideas outlined in this thread are just now fitting together in my head.

    this does not mean that the ideas take this long to understand, only that my venture has taken me on a 2 year path to reach the level of understanding that is presented in these outlines.
    i agree... i've been an SPL head for about 7 years and this is the first time i've actually looked in this section and I have always wanted to know the legit and somewhat technical terms and differences... very good read!



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  2. #47
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    Re: Active vs. Passive: An attempt by me to explain

    wow... great thread, I feel that I actually have a decent basic understanding



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    Re: Active vs. Passive: An attempt by me to explain

    I'm looking into this but not sure if my headunit will work.

    it's an alpine 7894. Looking at the manual it says it has a built in crossover

    HPF (Setting the High Pass Filter):
    FLAT (OFF) ↔ 80Hz ↔ 120Hz ↔160Hz
    Outputs all frequencies higher than that selected
    according to your preference


    and

    LPF(Setting the Low Pass Filter):
    FLAT (OFF) ↔ 80Hz ↔ 120Hz ↔160Hz
    Outputs all frequencies lower than that selected
    according to your preference.
    (Only available when using the subwoofer output from
    this unit.)


    Since I am not running a sub that would make the LPF option not applicable.

    So, that leaves me with only HPF. But I have a 4 channel amp and would need seperate settings for the front two and rear two, right????

    Also, I though I read somewhere (maybe earlier in this thread) where the settings were changed in db's? but mine are settings for Hz????

    I'm assuming my Alpine just won't do it. Anyone know for sure?

    Here's alink to their manual.

    http://akamaipix.crutchfield.com/Man...500CDA7894.PDF




  4. #49
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    Re: Active vs. Passive: An attempt by me to explain

    can you go active with a dnx8120 or avic n5?



    Quote Originally Posted by thylantyr View Post
    You can make a killer SQL wall rear stage and when not driving, rotate your
    seat 180 degrees and you now have a front stage.

  5. #50
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    Re: Active vs. Passive: An attempt by me to explain

    No, neither one.






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  6. #51
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    Re: Active vs. Passive: An attempt by me to explain

    Quote Originally Posted by eggyhustles View Post
    can you go active with a dnx8120 or avic n5?
    Pioneer makes one DVD HU that can, but it doesn't have Navi. And it's expensive as hell

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    Quote Originally Posted by Cameron_B View Post
    I pulled into the trailer park at around 3 am bumping my sony xplod 12 on sony amp. **** SLAMS!!!!!! Anways, I pulled up and it got all the girls wet.....I guess im an uncle and a dad now
    Quote Originally Posted by Cameron_B View Post
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  7. #52
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    Re: Active vs. Passive: An attempt by me to explain

    Hmm..so what what be needed go active with either, an external processor?



    Quote Originally Posted by thylantyr View Post
    You can make a killer SQL wall rear stage and when not driving, rotate your
    seat 180 degrees and you now have a front stage.

  8. #53
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    Re: Active vs. Passive: An attempt by me to explain

    Quote Originally Posted by eggyhustles View Post
    Hmm..so what what be needed go active with either, an external processor?
    I would say a capable HU and a 4 channel amp. Also some mids and tweets without the crossover. That's pretty much it. There are some other alternatives, but I feel this is the easiest way.

    Not sure if there is a way with either of those. I believe you can hook an external processor up to the Alpine screens.



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    Quote Originally Posted by Cameron_B View Post
    I pulled into the trailer park at around 3 am bumping my sony xplod 12 on sony amp. **** SLAMS!!!!!! Anways, I pulled up and it got all the girls wet.....I guess im an uncle and a dad now
    Quote Originally Posted by Cameron_B View Post
    Don't listen to all the haters, their shiz doesnt knock...EDIT: Ohh yea, and by the way....before you haters start mouthing, I got my SLAB from wall-mart....that ish doesnt bang it XPLODES. Yea..I run sony... Schoche -SP box with 4 inch PVC downfiring into pasenger wheel well. 5-6 inch streamers...

  9. #54
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    Re: Active vs. Passive: An attempt by me to explain

    I wanna go active..but i also need nav



    Quote Originally Posted by thylantyr View Post
    You can make a killer SQL wall rear stage and when not driving, rotate your
    seat 180 degrees and you now have a front stage.

  10. #55
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    Re: Active vs. Passive: An attempt by me to explain

    Then just get an external crossover or an amp that has a built in crossover that's flexible enough to hit your crossover points.



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  11. #56
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    Re: Active vs. Passive: An attempt by me to explain

    seems like a shitload of work lol

    passive it is..



    Quote Originally Posted by thylantyr View Post
    You can make a killer SQL wall rear stage and when not driving, rotate your
    seat 180 degrees and you now have a front stage.

  12. #57
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    Re: Active vs. Passive: An attempt by me to explain

    Quote Originally Posted by eggyhustles View Post
    seems like a shitload of work lol

    passive it is..



    It is?



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  13. #58
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    Re: Active vs. Passive: An attempt by me to explain

    basic 3-way setup:

    highpass tweets
    bandpass mids
    low pass subs

    4-way (3-way fronts):
    highpass tweets
    bandpass mids
    bandpass midbass
    low pass subs




  14. #59
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    Re: Active vs. Passive: An attempt by me to explain

    Quote Originally Posted by eggyhustles View Post
    seems like a shitload of work lol

    passive it is..
    first thing i did when i started learning of this site was buy and alpine 9835 with the crossovers built in the hu and got rid of my passive crossovers. it is nice and one of the reason why i wouldn't buy and dvd unit. only units i would want cost over 2 grand! its very easy to do with and external crossover but it is really nice when the crossover is built into the HU.
    Last edited by joeboxer5876; 03-30-2009 at 08:42 PM.




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    Re: Active vs. Passive: An attempt by me to explain

    Quote Originally Posted by eggyhustles View Post
    I wanna go active..but i also need nav
    Alpine W205/505, Blackbird, H701 processor...




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