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Reload Thread: Alpine 1542D or 12D4 for SQ?

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    Alpine 1542D or 12D4 for SQ?

    I currently have a 1542D and sounds great but It just doesn't have that quick response that I'm really looking for. I have the chance to trade the 1542D for the 12D4 and was wondering if the 12D4 will still work with my Kicker zx750.1 It's still a dual 4 ohm so would I still be wiring it in a parallel to form a 2 ohm load? My only real concern is the specs on the 12D4 say rms of 300-1000 and I've never seen any item that wasn't an exact RMS. Sorry for the ******* questions and for creating a Sub X vs Sub X thread....
    Last edited by Jordan515; 04-24-2013 at 02:36 AM.







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    Re: Alpine 1542D or 12D4 for SQ?

    Specs on your box?




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    Re: Alpine 1542D or 12D4 for SQ?

    The ported box is 3.2 cu ft. tuned to 32 hz and the 1542D is reccomended at 1.5-3.0 cu ft.

    The 12D4 box would be sealed at 1.25 cu ft. and the reccomended air space is .25-1.0 cu ft. I can always fill in the sealed box to shrink the volume though.




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    Re: Alpine 1542D or 12D4 for SQ?

    Change your enclosure not your sub. The 15 can sound just as good as the 12 while having more potential output. This is assuming that you have the room for a proper enclosure for the 15.



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    Re: Alpine 1542D or 12D4 for SQ?

    Quote Originally Posted by RicksI30 View Post
    Change your enclosure not your sub. The 15 can sound just as good as the 12 while having more potential output. This is assuming that you have the room for a proper enclosure for the 15.
    So you think you think that a 15 in a sealed box can sound better than a 12 in a sealed? (Assuming they're both the appropriate size)




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    Re: Alpine 1542D or 12D4 for SQ?

    Quote Originally Posted by Jordan515 View Post
    So you think you think that a 15 in a sealed box can sound better than a 12 in a sealed? (Assuming they're both the appropriate size)
    Yes the 15 can sound just as good, but the type r is more suited for a ported enclosure.



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    Re: Alpine 1542D or 12D4 for SQ?

    Ok so what I gathered is that Ported can be just as good as sealed for SQ if it's a well designed box. I'm sure it's impossible to tell from just a pic but is this box "well designed"?

    As I said earlier it's 3.2 cu ft. 32hz





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    Re: Alpine 1542D or 12D4 for SQ?

    Just from the pic I would say definitely not. It looks like a prefab with too little port area. It probably isn't even .75 mdf.



    Head unit: Kenwood Excelon KDC-X996
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    Re: Alpine 1542D or 12D4 for SQ?

    Quote Originally Posted by RicksI30 View Post
    Just from the pic I would say definitely not. It looks like a prefab with too little port area. It probably isn't even .75 mdf.
    I figured... Thanks for the advice. Is there a section here where I can find people in my area that make boxes? Since I've dropped all this money already I might as well do it right.




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    Re: Alpine 1542D or 12D4 for SQ?

    Thats a prefab that will offer way less than optimal results on a 15" sub like the Type R.

    Get a custom box built. The 15 can be just as tight as the 12. Neither will be noticeably tighter than the other; however, the 15 has the potential to be louder if you have enough air space for it.

    Check the vendor section for box builders




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    Re: Alpine 1542D or 12D4 for SQ?

    Quote Originally Posted by Why So Cereal? View Post
    Thats a prefab that will offer way less than optimal results on a 15" sub like the Type R.

    Get a custom box built. The 15 can be just as tight as the 12. Neither will be noticeably tighter than the other; however, the 15 has the potential to be louder if you have enough air space for it.

    Check the vendor section for box builders
    And to sum up everything I've said this^^`



    Head unit: Kenwood Excelon KDC-X996
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    Sub amp: PPI Bk1300.1
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    Re: Alpine 1542D or 12D4 for SQ?

    Sorry guys I'm having a hell of a time trying to find anything in the vendor section. Anyway you could direct me to somebody in Iowa? Preferably Des Moines but not a big deal if not.




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    Re: Alpine 1542D or 12D4 for SQ?

    Quote Originally Posted by Jordan515 View Post
    Sorry guys I'm having a hell of a time trying to find anything in the vendor section. Anyway you could direct me to somebody in Iowa? Preferably Des Moines but not a big deal if not.
    Best boxes and great prices.
    Starr Mountain Sound



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    Re: Alpine 1542D or 12D4 for SQ?

    Quote Originally Posted by Popwarhomie View Post
    Best boxes and great prices.
    Starr Mountain Sound
    Yeah thanks, I noticed he's very popular with many of the members here and the prices are extremely reasonable.




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    Re: Alpine 1542D or 12D4 for SQ?

    Quote Originally Posted by Jordan515 View Post
    The ported box is 3.2 cu ft. tuned to 32 hz and the 1542D is reccomended at 1.5-3.0 cu ft.

    The 12D4 box would be sealed at 1.25 cu ft. and the reccomended air space is .25-1.0 cu ft. I can always fill in the sealed box to shrink the volume though.
    This seems like a fine box volume. You'll get about perfect box qtc. If sealed box volume is larger then you will actually get slightly better transient response at the expense of slightly less power handling.




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