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    Sq/In for 12" Fi Q's

    I’m looking for some suggestions on my next box build. I have designed and constructed many boxes for myself and forum member (for this and other forums), usually based on vender specs, members targets (ie net volume and tuning freq) and sometimes buy the use of winisd.

    Right now I have a set of 12” Fi Q’s that I am designing a box for that will be 5 cu/ft net @ 32hz. This is where I need some suggestions. How many sq/in of port should I be targeting?

    Right now I have a port that is 6” x 10” x 25” to give me my 32Hz.

    How would you design for a Daily Driver?
    Last edited by rpfuror; 01-15-2007 at 11:05 AM.



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    Re: Sq/In for 12" Fi Q's

    Here is how the design sits right now, with the specs from my first post.




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    Re: Sq/In for 12" Fi Q's

    go with 60-65



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    Re: Sq/In for 12" Fi Q's

    6” x 10” x 25”

    with those specs you have 60 sq. inches



    HU:Kenwood Excelon KDC-889
    Speakers: CDT 61A's with rainbow x-overs
    Front amp: Autotek MM100.4
    Sub amp: (2) Audiopipe 1500's
    Subwoofers: (4) 15" Crunch GPV
    Box: 16 cubes tuned to 28hz (removable port)
    Extra Batt: C&D 139AH
    151.xx sealed up 154.xx in the kick

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    Re: Sq/In for 12" Fi Q's

    Yeap 60 is what I designed to looks good then?



    **rpfuror_designs**
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    Design: RFmustang, e22s, Platestacker45, lilgator, diminishedpower, hannibal05

    Buy/Sell: 00maxima, Flyhalf, CaliforniabOY5, angrytrucker78, shawnfleming, dre2390 , IM IN HERE, Spellman, LazyRider, mikescanlon, AZ-ss, BLD 25, x1le woofercooker, Twisted_0912

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    Re: Sq/In for 12" Fi Q's

    heck ya man should sound awesome



    HU:Kenwood Excelon KDC-889
    Speakers: CDT 61A's with rainbow x-overs
    Front amp: Autotek MM100.4
    Sub amp: (2) Audiopipe 1500's
    Subwoofers: (4) 15" Crunch GPV
    Box: 16 cubes tuned to 28hz (removable port)
    Extra Batt: C&D 139AH
    151.xx sealed up 154.xx in the kick

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    Re: Sq/In for 12" Fi Q's

    I would go for about 70. I put 60 to my q15 in 4 cubes @ 30, you'll have a little more linear displacement than me and twice the thremal capacity and a bigger box.




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    Re: Sq/In for 12" Fi Q's

    With the 60 do you have any distortion / noise?



    **rpfuror_designs**
    ** Ask me about box design and construction **

    Build: bigmike8771, bama350z, nismos14, speedyg76, onnoff7, orioles26, Airman21

    Design: RFmustang, e22s, Platestacker45, lilgator, diminishedpower, hannibal05

    Buy/Sell: 00maxima, Flyhalf, CaliforniabOY5, angrytrucker78, shawnfleming, dre2390 , IM IN HERE, Spellman, LazyRider, mikescanlon, AZ-ss, BLD 25, x1le woofercooker, Twisted_0912

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    Re: Sq/In for 12" Fi Q's

    Quote Originally Posted by profundus-sanus View Post
    I would go for about 70. I put 60 to my q15 in 4 cubes @ 30, you'll have a little more linear displacement than me and twice the thremal capacity and a bigger box.
    huh?



    HU:Kenwood Excelon KDC-889
    Speakers: CDT 61A's with rainbow x-overs
    Front amp: Autotek MM100.4
    Sub amp: (2) Audiopipe 1500's
    Subwoofers: (4) 15" Crunch GPV
    Box: 16 cubes tuned to 28hz (removable port)
    Extra Batt: C&D 139AH
    151.xx sealed up 154.xx in the kick

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    Re: Sq/In for 12" Fi Q's

    I have 36sqin for my 1 12" Q and I have no distortion/port noise. I'd guess that 30 sqin of port per sub wouldn't be much worse.



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    Re: Sq/In for 12" Fi Q's

    31.25sq" is enough for my mt12



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