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    riddla's Avatar
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    Icon10 My port position question with pics

    Ive been told over my neck of the woods that the way I have my subs mounted in my box is not good because the subs are not loading properly.

    they say port in the middle of two subs for good loading ?

    Whats your opinion on this please. Over in the uk they use mainly round ports not slot ports but I come to this forum more because all you guys seem to know whats going on more than over here.

    I built the box below for 2 pioneer premier champion woofers 1000w rms each 3000 peak and they wang sweetly. They drop very deep ( very deep ) tuned to 30 hz with my hifonics 1606 amp and I have had no problems with them.

    Whats your opinion on the above please, subs in middle best or is the way i have it ok.

    A forum member here helped me with my box









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    Re: My port position question with pics

    no issues, your fine



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    Re: My port position question with pics

    it'll work.. some people just prefer having separate chambers because with one chamber, if one sub blows the other sub now thinks its in an enclosure twice the size of what it needs and can **** that one up too.




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    Re: My port position question with pics

    I think (that right there is a dangerous statement) the MOST important thing is to have the port on the same baffle as the speakers. In theory it would be nice to have the port equa-distant from the subs, but I can't see that making a huge difference.



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    Re: My port position question with pics

    Quote Originally Posted by hoxie08 View Post
    it'll work.. some people just prefer having separate chambers because with one chamber, if one sub blows the other sub now thinks its in an enclosure twice the size of what it needs and can **** that one up too.
    you also get a bump form having a single chamber fyi



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    Icon10 Re: My port position question with pics

    Ok thanx, thats good to know. This forum is definately THE BEST. Thanx again




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    Re: My port position question with pics

    Quote Originally Posted by kmanian View Post
    you also get a bump form having a single chamber fyi
    Sorry man, whats that mean ?




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    Re: My port position question with pics

    Quote Originally Posted by 2fnloud View Post
    I think (that right there is a dangerous statement) the MOST important thing is to have the port on the same baffle as the speakers. In theory it would be nice to have the port equa-distant from the subs, but I can't see that making a huge difference.
    Umm.. Then why do most people day to fire up and port to the side



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    Re: My port position question with pics

    Quote Originally Posted by miker View Post
    Umm.. Then why do most people day to fire up and port to the side
    I thought that COULD cause cancellation? If I am wrong please let me know.



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    Re: My port position question with pics

    Quote Originally Posted by riddla View Post
    Sorry man, whats that mean ?
    If you use a single chamber you will typically see a higher spl number than using seprate chambers.



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    Re: My port position question with pics

    Quote Originally Posted by 2fnloud View Post
    I thought that COULD cause cancellation? If I am wrong please let me know.
    It depends on the design of the system, in a perfect world (home theater) you are correct, however in the auto enviroment there a many variables that would allow you to have the port place on a different plane and acheive the desired result



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    Re: My port position question with pics

    Quote Originally Posted by 2fnloud View Post
    I thought that COULD cause cancellation? If I am wrong please let me know.
    I'm running my subs up port back and no cancellation what so ever, you've heard wrong..




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    Re: My port position question with pics

    Quote Originally Posted by kmanian View Post
    If you use a single chamber you will typically see a higher spl number than using seprate chambers.
    Does this apply with sealed enclosures as well?



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    Re: My port position question with pics

    yes, typically it may just be fractional but it is measureable usually. I picked up almost 2 db when I put 4 12" in a sinble instead of seprating.



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    Re: My port position question with pics

    Quote Originally Posted by kmanian View Post
    If you use a single chamber you will typically see a higher spl number than using seprate chambers.
    Ok. Cool.




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