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    Port Area Question

    ok, i know for pure SPL you want as much port area as possible but does having large amounts of port area decrease SQ? even if its tuned low-ish like 34hz



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    Re: Port Area Question

    No, as a matter of fact, the greater the cross-sectional area of the port, the less chuffing there is at higher excursions, so you get more music and less noise.

    EDIT: And I wouldn't say 34Hz is a "low" tuning point, either. It isn't too high, but something like 20-25Hz is low.




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    Re: Port Area Question

    34 is pretty low I mean I dont know too many people who have the woofer in their car tuned below 30Hz.



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    Re: Port Area Question

    i didn't mean that 34 was low, it was just a number to put up, but so basically if you can get 400 square inches of port, it'd be good?



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    Re: Port Area Question

    Yea itd be good but nearly impossible to do.



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    Re: Port Area Question

    why? ...10char



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    Re: Port Area Question

    bump......



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    Re: Port Area Question

    larger port area means you need a longer port
    for example in a box thats 4 cubes after displacement tuned to 34 hz with a 10"x10" port it needs to be 49.82" long (winisd)
    in that same box with a port thats 40"x10" the port needs to be 210.25" long
    so 400 sq inches of port area is pretty impractical, but I suppose you could do it if you wanted to
    Last edited by Benny212; 04-29-2004 at 11:30 PM. Reason: left some stuff out




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    Re: Port Area Question

    this isn't going in a Civic or anything, just theory... so it is possible? just need a hugely long port?



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    Re: Port Area Question

    I've heard you actually start going downhill after the port area gets larger then the cone area, So 400 sq. inches would be a waste




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    Re: Port Area Question

    Quote Originally Posted by RMKrider1
    I've heard you actually start going downhill after the port area gets larger then the cone area, So 400 sq. inches would be a waste
    alrighty, that's what i wanted to know

    so the port area shouldn't be larger than the cone area of all sub(s) combined?



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    Re: Port Area Question

    I think thats right.......BUT I have no proof to back this up!! I've only heard this mentioned a few times.
    Maybe rangerman or bigbassman will read this and help out




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    Re: Port Area Question

    thanks for your help, i hope one of those guys could give me a definite answer



    MdOiDcEtRaAtToOrR
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    Re: Port Area Question

    Im pretty sure I've heard Lloyd say that for spl comp. you want to have the port area to equal Sd



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    Re: Port Area Question

    Sd is cone area? and Sd of all subs combined?



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