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    528hz's Avatar
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    Can someone help me with an aero port?>>

    I want to use and aero port, but the calculator on PSP is confusing to me, so here I am.

    The dimensions of this box I am building are:

    32.5W x 15.5H x 21D

    These are EXTERNAL DIMENSIONS and I am using 3/4 in. birch

    Disp. of sub: 0.31

    I want to tune at 30 hz.

    How do I go about doing this? I want to keep as little port area as I can, but enough.
    Last edited by 528hz; 06-29-2008 at 03:06 PM.







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    Re: Can someone help me with an aero port?>>

    What kind of sub? This is the only way to determine how much port area is enough.

    Without knowing this I'd say a single 6" port at 16" or dual 4" ports at 15.25" to get you started.



    Alpine CDA-9887 - PG Xenon 100.4 - PG Xenon 600.1 - IDQ10V3(1.3cft. @ 28hz) - Polk SR6501 mids - Seas Neo's - Knuconceptz - RAAMAudio
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    Re: Can someone help me with an aero port?>>

    Well it's for an RD Alpha.......here are the T/S specs. and I want the box more for SQ than SPL hence the "less port area need."

    15" D2 (double spider)

    FS 33.9hz
    RE 3.6 ohm
    QMS 5.21
    QES 0.522
    QTS 0.4745
    RMS 10.27
    CMS 0.0874 MM/N
    MMS 251G
    BL 19.22 TM
    SPL @ 1W 91.55 DB
    VAS 98.94 L
    XCOIL 53 MM
    Cutout 349 MM
    Mounting Depth 230 MM
    Displacement .31 cu.




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    Re: Can someone help me with an aero port?>>

    How about Le, Xmax and Pe... Do you have these? I'll whip something up on WinISD, if so.



    Alpine CDA-9887 - PG Xenon 100.4 - PG Xenon 600.1 - IDQ10V3(1.3cft. @ 28hz) - Polk SR6501 mids - Seas Neo's - Knuconceptz - RAAMAudio
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    Re: Can someone help me with an aero port?>>

    Well....Pe would be 2000.

    The Le and xmax I don't have....




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    Re: Can someone help me with an aero port?>>

    Also.....I've run my specs through Box-Port Design and all I need to know is the how, what, where, and so forth for the port.




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    Re: Can someone help me with an aero port?>>

    WinISD isn't jiving with the ts parameters you've provided...

    If you have a box building program, doesn't it allow you to figure ports?

    Either of the two I listed are tuned correctly, but I'm not able to calculate the Vent mach without WinISD cooperation. That's my only concern.

    I guess I can't be of much more help. Good luck.



    Alpine CDA-9887 - PG Xenon 100.4 - PG Xenon 600.1 - IDQ10V3(1.3cft. @ 28hz) - Polk SR6501 mids - Seas Neo's - Knuconceptz - RAAMAudio
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    Re: Can someone help me with an aero port?>>

    Thanks for your help BEAV.

    Anyone else?




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