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Reload Thread: I need some help with my next box.....

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    Grinder1989's Avatar
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    I need some help with my next box.....

    Here is what I have to work with.

    48" long

    23" tall

    14" deep

    Sub and port will be firing up.

    Port area must be 70 square inches

    I'm looking around 5 cubic feet after sub displacement but I have no idea what the displacement would be so we'll say the equivalent of an MT.

    I do not have any specs on the sub but I'd like it tuned anywhere between 28hz-35hz.

    I have tried to design this myself but I'm not sure what to do about port area and all that. Oh and the sub is the 15" Nightshade Prototype. Thanks for the help.



    North Coast Improvements, Mobile Audio Division. Sundown Audio Dealer Akron, OH. Need BNIB audio? PM me for details.





    By: N.G.U Graphics




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    Re: I need some help with my next box.....

    70 sq inches of port with 5 cubes net =port length of around 31.5 to get 30 htz



    Quote Originally Posted by chase007 View Post
    if u need a box...I'l taked 3 years of shop class so i know what im doing.

    after i explained to him there's more to a proper box than boards and glue and he should practice before trying to sell boxes to others

    Quote Originally Posted by chase007 View Post
    yes personaly if it was some one elce that just starting making boxes but i'v taken shop for 3 years now...Making a lil box is nothing i don't need to pratice on a box to get it right i learned alot of stuff from 1 box and i can fix that in my next box
    after i told him that customers would care about the looks of the box

    Quote Originally Posted by chase007 View Post
    if u want some thing that looks pretty why don't u find a black guy with a big d*ck.

  3. #3
    Grinder1989's Avatar
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    Re: I need some help with my next box.....

    Quote Originally Posted by bonesninja View Post
    70 sq inches of port with 5 cubes net =port length of around 31.5 to get 30 htz
    But doesn't that increase the port area? Is it bad if there is too much port area?



    North Coast Improvements, Mobile Audio Division. Sundown Audio Dealer Akron, OH. Need BNIB audio? PM me for details.





    By: N.G.U Graphics

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    Re: I need some help with my next box.....

    the port area is measured at the opening, assuming that the port is the same width/height throughout the port. the port area remains the same regardless of the length, you just go longer or shorter to get the tuning you want



    Quote Originally Posted by chase007 View Post
    if u need a box...I'l taked 3 years of shop class so i know what im doing.

    after i explained to him there's more to a proper box than boards and glue and he should practice before trying to sell boxes to others

    Quote Originally Posted by chase007 View Post
    yes personaly if it was some one elce that just starting making boxes but i'v taken shop for 3 years now...Making a lil box is nothing i don't need to pratice on a box to get it right i learned alot of stuff from 1 box and i can fix that in my next box
    after i told him that customers would care about the looks of the box

    Quote Originally Posted by chase007 View Post
    if u want some thing that looks pretty why don't u find a black guy with a big d*ck.

  5. #5
    Grinder1989's Avatar
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    Re: I need some help with my next box.....

    I meant square port volume. Sorry



    North Coast Improvements, Mobile Audio Division. Sundown Audio Dealer Akron, OH. Need BNIB audio? PM me for details.





    By: N.G.U Graphics

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    bonesninja's Avatar
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    Re: I need some help with my next box.....

    the volume, measured in cubic units, occupied by the port will go up or down depending on the length but the port area is constant.



    Quote Originally Posted by chase007 View Post
    if u need a box...I'l taked 3 years of shop class so i know what im doing.

    after i explained to him there's more to a proper box than boards and glue and he should practice before trying to sell boxes to others

    Quote Originally Posted by chase007 View Post
    yes personaly if it was some one elce that just starting making boxes but i'v taken shop for 3 years now...Making a lil box is nothing i don't need to pratice on a box to get it right i learned alot of stuff from 1 box and i can fix that in my next box
    after i told him that customers would care about the looks of the box

    Quote Originally Posted by chase007 View Post
    if u want some thing that looks pretty why don't u find a black guy with a big d*ck.

  7. #7
    Grinder1989's Avatar
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    Re: I need some help with my next box.....

    But does the port volume have an impact on the sound? I know the tuning can be changed with it but I wasn't sure if port volume affect anything else.



    North Coast Improvements, Mobile Audio Division. Sundown Audio Dealer Akron, OH. Need BNIB audio? PM me for details.





    By: N.G.U Graphics

  8. #8
    bonesninja's Avatar
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    Re: I need some help with my next box.....

    Quote Originally Posted by Grinder1989 View Post
    But does the port volume have an impact on the sound? I know the tuning can be changed with it but I wasn't sure if port volume affect anything else.
    The port AREA can have dramatic effects on the sound, too little area and you can have lots of port noise = bad. Also length can have equally dramatic effects due to the tuning differences.

    The best advice i can give you is to have one of the more reputable box designers model you a box based on your dimensions, port and space requirements. A properly designed box can be priceless, the best built box in the world can be crap if the design is flawed



    Quote Originally Posted by chase007 View Post
    if u need a box...I'l taked 3 years of shop class so i know what im doing.

    after i explained to him there's more to a proper box than boards and glue and he should practice before trying to sell boxes to others

    Quote Originally Posted by chase007 View Post
    yes personaly if it was some one elce that just starting making boxes but i'v taken shop for 3 years now...Making a lil box is nothing i don't need to pratice on a box to get it right i learned alot of stuff from 1 box and i can fix that in my next box
    after i told him that customers would care about the looks of the box

    Quote Originally Posted by chase007 View Post
    if u want some thing that looks pretty why don't u find a black guy with a big d*ck.

  9. #9
    Grinder1989's Avatar
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    Re: I need some help with my next box.....

    Quote Originally Posted by bonesninja View Post
    The port AREA can have dramatic effects on the sound, too little area and you can have lots of port noise = bad. Also length can have equally dramatic effects due to the tuning differences.

    The best advice i can give you is to have one of the more reputable box designers model you a box based on your dimensions, port and space requirements. A properly designed box can be priceless, the best built box in the world can be crap if the design is flawed
    Yea I was looking for that but, my specs are as follows on the box I just designed:

    square port area = 86
    square port volume = 3526
    square port volume displaced = 3551.125
    Box volume = 5.177 cubic feet
    Its tuned @ ~30



    North Coast Improvements, Mobile Audio Division. Sundown Audio Dealer Akron, OH. Need BNIB audio? PM me for details.





    By: N.G.U Graphics

  10. #10
    bonesninja's Avatar
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    Re: I need some help with my next box.....

    so yeah it looks like 5.177 cubes after port before sub, which if you want 5 cubes net, you're fine. Port looks fine ...its taking up 2 cubes by itself.



    Quote Originally Posted by chase007 View Post
    if u need a box...I'l taked 3 years of shop class so i know what im doing.

    after i explained to him there's more to a proper box than boards and glue and he should practice before trying to sell boxes to others

    Quote Originally Posted by chase007 View Post
    yes personaly if it was some one elce that just starting making boxes but i'v taken shop for 3 years now...Making a lil box is nothing i don't need to pratice on a box to get it right i learned alot of stuff from 1 box and i can fix that in my next box
    after i told him that customers would care about the looks of the box

    Quote Originally Posted by chase007 View Post
    if u want some thing that looks pretty why don't u find a black guy with a big d*ck.

  11. #11
    Grinder1989's Avatar
    Grinder1989 is offline Sundown Audio Dealer

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    Re: I need some help with my next box.....

    Quote Originally Posted by bonesninja View Post
    so yeah it looks like 5.177 cubes after port before sub, which if you want 5 cubes net, you're fine. Port looks fine ...its taking up 2 cubes by itself.
    So do you think that would be a decent box for that sub?



    North Coast Improvements, Mobile Audio Division. Sundown Audio Dealer Akron, OH. Need BNIB audio? PM me for details.





    By: N.G.U Graphics

  12. #12
    bonesninja's Avatar
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    Re: I need some help with my next box.....

    not familiar with the sub at all, but the box looks nice and loud, should hit the lows pretty good. Do you know what the Fs is of the nightshade?



    Quote Originally Posted by chase007 View Post
    if u need a box...I'l taked 3 years of shop class so i know what im doing.

    after i explained to him there's more to a proper box than boards and glue and he should practice before trying to sell boxes to others

    Quote Originally Posted by chase007 View Post
    yes personaly if it was some one elce that just starting making boxes but i'v taken shop for 3 years now...Making a lil box is nothing i don't need to pratice on a box to get it right i learned alot of stuff from 1 box and i can fix that in my next box
    after i told him that customers would care about the looks of the box

    Quote Originally Posted by chase007 View Post
    if u want some thing that looks pretty why don't u find a black guy with a big d*ck.

  13. #13
    Grinder1989's Avatar
    Grinder1989 is offline Sundown Audio Dealer

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    Re: I need some help with my next box.....

    Quote Originally Posted by bonesninja View Post
    not familiar with the sub at all, but the box looks nice and loud, should hit the lows pretty good. Do you know what the Fs is of the nightshade?
    Not a clue. I wish I could find the conversation I had with Jake about it. I asked him the specs and he said "loud" . But he never tested it I guess.



    North Coast Improvements, Mobile Audio Division. Sundown Audio Dealer Akron, OH. Need BNIB audio? PM me for details.





    By: N.G.U Graphics

  14. #14
    Grinder1989's Avatar
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    Re: I need some help with my next box.....

    Bump, thanks for the help Bones.



    North Coast Improvements, Mobile Audio Division. Sundown Audio Dealer Akron, OH. Need BNIB audio? PM me for details.





    By: N.G.U Graphics

  15. #15
    Grinder1989's Avatar
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    Re: I need some help with my next box.....

    Up. OK so I have the plans and I'm going to pick up the wood in a week or two. I have an assload of drywall screws so the only other thing is the glue. I've used liquid nails in the past and never had any problems but I'm sure there are better things out there. What glue do you guys use?



    North Coast Improvements, Mobile Audio Division. Sundown Audio Dealer Akron, OH. Need BNIB audio? PM me for details.





    By: N.G.U Graphics

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