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    Full Tilt's Avatar
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    Give me your critique.

    I designed a new one..scroll down to check it out!

    Positive construction is great. (For an SA-15, aiming for 3.5 @ 35 hz)





    Uploaded with ImageShack.us

    Now, there are a few things I need to clear up -

    1) The height dimension excludes the top wall of the enclosure. So the total height will be 17".

    2) The outer dimensions of the box are 17 x 17 x 29. That means the inner dimensions are 15.5 x 15.5 x 27.5, giving me an internal volume of ~3.8 cu. ft. Then, as displacement of the sub and port are subtracted, it'll leave me in the ballpark of 3.5 cubic feet.

    3) I used Products Menu to find my port length, it's supposed to be around 35 hz with a 6" aeroport. Is this anywhere close? (Also, I know I don't have much room between my port and my rear wall, as shown in my second picture. Is this going to be a major problem?)
    Last edited by Full Tilt; 09-07-2012 at 12:13 AM.





    Quote Originally Posted by T.I.K. View Post
    Careful, by those definitions Spider Monkey is a contributing member, I don't think he even knows what a subwoofer is.
    Quote Originally Posted by Truman View Post
    Thanks quackhead. Your the only person who agrees with me. Jesus Christ I have like 40 post and I've been called a ******* like 37 times




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    Re: Give me your critique.

    I'm not a designer but I have made a few boxes and I'm pretty sure you want the ports distance equal too or greater then it's opening from the back wall, you may have to use a 90% elbow in there to achieve the tuning you want.



    electrical: Optima yellow top X 2 big 3 in monster OFC 1/0g high output alt by maniac electrics
    HU: JVC AVX-77 touch screen
    Front stage: RE XXX 6.5" comps
    front stage amp: Rockford T600.2
    subs: 1 Sundown ZV4 12"
    sub amp: Rockford T2500.1BDCP
    Enclosure: ported (by JayDubb757 )

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    Re: Give me your critique.

    go with a slot port. or fire the port to the side.



    1999 Tahoe
    2 sa12s
    4th order
    145.18 @33z... with less than 500 watts!

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    Re: Give me your critique.

    Quote Originally Posted by goingdef View Post
    I'm not a designer but I have made a few boxes and I'm pretty sure you want the ports distance equal too or greater then it's opening from the back wall, you may have to use a 90% elbow in there to achieve the tuning you want.
    I heard it was you wanted the end of the port at least equal to the ports diameter (which is certainly not the case here, I'm aware). How would I elbow an aeroport? And how would that affect the tuning/sound?

    ---------- Post added at 10:48 PM ---------- Previous post was at 10:48 PM ----------

    Quote Originally Posted by RangerDanger View Post
    go with a slot port. or fire the port to the side.
    Which side?





    Quote Originally Posted by T.I.K. View Post
    Careful, by those definitions Spider Monkey is a contributing member, I don't think he even knows what a subwoofer is.
    Quote Originally Posted by Truman View Post
    Thanks quackhead. Your the only person who agrees with me. Jesus Christ I have like 40 post and I've been called a ******* like 37 times

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    Toone's Avatar
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    Re: Give me your critique.

    port should be diameters distance away from back wall as said above, also no bracing?




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    Full Tilt's Avatar
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    Re: Give me your critique.

    Quote Originally Posted by Toone View Post
    port should be diameters distance away from back wall as said above, also no bracing?
    I've run multiple boxes, none of them ever had bracing, seemed to be fine. Then again, they were slot port boxes. I guess it never really came to mind, but I'm sure this isn't my final design. I'll add bracing when I redo the design for my port.





    Quote Originally Posted by T.I.K. View Post
    Careful, by those definitions Spider Monkey is a contributing member, I don't think he even knows what a subwoofer is.
    Quote Originally Posted by Truman View Post
    Thanks quackhead. Your the only person who agrees with me. Jesus Christ I have like 40 post and I've been called a ******* like 37 times

  7. #7
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    Re: Give me your critique.

    Quote Originally Posted by Full Tilt View Post
    I heard it was you wanted the end of the port at least equal to the ports diameter (which is certainly not the case here, I'm aware). How would I elbow an aeroport? And how would that affect the tuning/sound?

    ---------- Post added at 10:48 PM ---------- Previous post was at 10:48 PM ----------



    Which side?
    experiment and see which one will get you louder.



    1999 Tahoe
    2 sa12s
    4th order
    145.18 @33z... with less than 500 watts!

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    Re: Give me your critique.

    I've always just built slotted ports there easy to get everything you want built right into the enclosure, I have only done one aero type port and it was to the passenger side as coming out the front wasn't an option but to add an elbow I don't know how you would add that in hvac work a 90% turn represents a 10' straight piece worth of pressure drop I don't know if things like that factor in here or not.



    electrical: Optima yellow top X 2 big 3 in monster OFC 1/0g high output alt by maniac electrics
    HU: JVC AVX-77 touch screen
    Front stage: RE XXX 6.5" comps
    front stage amp: Rockford T600.2
    subs: 1 Sundown ZV4 12"
    sub amp: Rockford T2500.1BDCP
    Enclosure: ported (by JayDubb757 )

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    Re: Give me your critique.

    Quote Originally Posted by goingdef View Post
    I've always just built slotted ports there easy to get everything you want built right into the enclosure, I have only done one aero type port and it was to the passenger side as coming out the front wasn't an option but to add an elbow I don't know how you would add that in hvac work a 90% turn represents a 10' straight piece worth of pressure drop I don't know if things like that factor in here or not.
    I do like slot ported boxes, but unfortunately I really just don't have the room to work with one. I'll do a new design to the side.





    Quote Originally Posted by T.I.K. View Post
    Careful, by those definitions Spider Monkey is a contributing member, I don't think he even knows what a subwoofer is.
    Quote Originally Posted by Truman View Post
    Thanks quackhead. Your the only person who agrees with me. Jesus Christ I have like 40 post and I've been called a ******* like 37 times

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    Re: Give me your critique.

    Definitely don't want to crowd the port into the back wall! Bracing will always help.




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    Re: Give me your critique.

    Pretty much what everyone else has said about the port.

    The other issue if you port out the side is loading/unloading may become an issue.




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    Re: Give me your critique.

    New Design!



    Uploaded with ImageShack.us

    I realize it's pretty close to the wall, but I really couldn't move it over much further because of the subwoofer. Better/worse than the first one?

    EDIT: The 7 1/2 in. is for the SA-15s depth.





    Quote Originally Posted by T.I.K. View Post
    Careful, by those definitions Spider Monkey is a contributing member, I don't think he even knows what a subwoofer is.
    Quote Originally Posted by Truman View Post
    Thanks quackhead. Your the only person who agrees with me. Jesus Christ I have like 40 post and I've been called a ******* like 37 times

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    Re: Give me your critique.

    Quote Originally Posted by pro-rabbit View Post
    Pretty much what everyone else has said about the port.

    The other issue if you port out the side is loading/unloading may become an issue.
    How's the new one look? And what do you mean by loading/unloading?





    Quote Originally Posted by T.I.K. View Post
    Careful, by those definitions Spider Monkey is a contributing member, I don't think he even knows what a subwoofer is.
    Quote Originally Posted by Truman View Post
    Thanks quackhead. Your the only person who agrees with me. Jesus Christ I have like 40 post and I've been called a ******* like 37 times

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    Re: Give me your critique.

    Quote Originally Posted by Full Tilt View Post
    How's the new one look? And what do you mean by loading/unloading?
    unloading is when the woofer loses pressure on the rear wave. it basically starts to move free air. from my understanding anyways. also I would swap to a single 12 and run it in the correct box..



    1999 Tahoe
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    Re: Give me your critique.

    Quote Originally Posted by RangerDanger View Post
    unloading is when the woofer loses pressure on the rear wave. it basically starts to move free air. from my understanding anyways. also I would swap to a single 12 and run it in the correct box..
    But..but..I finally got my SA-15..

    And wouldn't I lose quite a bit of output? I do not want that.





    Quote Originally Posted by T.I.K. View Post
    Careful, by those definitions Spider Monkey is a contributing member, I don't think he even knows what a subwoofer is.
    Quote Originally Posted by Truman View Post
    Thanks quackhead. Your the only person who agrees with me. Jesus Christ I have like 40 post and I've been called a ******* like 37 times

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