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    Trevor28139's Avatar
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    4th order vs vented wall

    i have a 2001 expedition with:

    2 DD 3515 CF
    1 DD M3A

    currently have a vented box subs firing up vent back.

    going to do a rebuild this weekend and trying to decide between:

    A fourth order with subs firing up into vented chamber with vented chamber firing forward, everything walled off behind the back seat.

    A vented enclosure subs firing forward vent firing forward everything walled off.

    my thought process is that if i wall off the space behind the back seat it reduces the amount of space to pressurize.

    my main focus is daily listening but would like to see a nice number on the meter as well.







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    Re: 4th order vs vented wall

    I dont think that the dd's are suited for a 4th, but im not too sure..I think you should try a 6th order



    1999 Tahoe
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    Re: 4th order vs vented wall

    i thought 6th orders were really hard on subs?




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    Re: 4th order vs vented wall

    Quote Originally Posted by Trevor28139 View Post
    i thought 6th orders were really hard on subs?
    Not if designed correctly, just like any other box. I agree, 6th order over 4th.



    Alpine - ASE (local) - Batcap - C&D Tech - CT Sounds - DC - eD - Excessive Amperage - Rainbow

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    Re: 4th order vs vented wall

    I agree too. with DD's you gonna wanna go with a 6th or ported.




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    Re: 4th order vs vented wall

    A 6th would be a fun build, but a 4th will work as well. If you are able to design/build it yourself try em both. The baffles for sealing it off should be the same for both options.




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