Closed Thread
Results 1 to 15 of 15

Reload Thread: Just installed longer ports to my box, what now?

  1. #1
    xmakeafistx's Avatar
    xmakeafistx is offline CarAudio.com Elite



    Join Date
    Mar 2011
    Location
    Kenosha, WI
    Age
    20
    Posts
    1,089
    Post Thanks / Like
    Mentioned
    25 Post(s)

    Just installed longer ports to my box, what now?

    I tried testing songs with about 40hz tones and songs with 30hz and I feel like it is much louder at the higher frequencies.

    The box is supposed to be tuned at 30hz.

    I have three four inch ports, all 15.5 inches long, the box is 32 wide, 23.5 deep, and 15 high. Ports are facing forward, subs are facing up. I was not able to have the ports shooting to the trunk due to not being able to fit the subs in that way.

    I just want more to mess around with, I feel like they could be louder. They sound/feel a lot louder on the inside rather than out, but thats probably just the car.







  2. #2
    Join Date
    Nov 2010
    Location
    Brandon , FL
    Age
    32
    Posts
    4,627
    Post Thanks / Like
    Mentioned
    5 Post(s)

    Re: Just installed longer ports to my box, what now?

    how do you know the box is tuned to 30hz?? what calculations did you use to come to this conclusion?




  3. #3
    pro-rabbit's Avatar
    pro-rabbit is offline Moderator pro-rabbit is a Supporting Member of the forum!

    pro-rabbit is a Supporting Vendor of the forum!

    Join Date
    Jan 2004
    Location
    OKC, OK
    Age
    32
    Posts
    12,395
    Post Thanks / Like
    Mentioned
    374 Post(s)

    Re: Just installed longer ports to my box, what now?

    Are your ports coming out of the box or have a angle/bend to them to get that length?




  4. #4
    Join Date
    Nov 2010
    Location
    Brandon , FL
    Age
    32
    Posts
    4,627
    Post Thanks / Like
    Mentioned
    5 Post(s)

    Re: Just installed longer ports to my box, what now?

    Quote Originally Posted by pro-rabbit View Post
    Are your ports coming out of the box or have a angle/bend to them to get that length?
    never thought to ask this. say your 4" , you made sure they are at least 4" away from any inside wall in the box right?




  5. #5
    xmakeafistx's Avatar
    xmakeafistx is offline CarAudio.com Elite

    Threadstarter


    Join Date
    Mar 2011
    Location
    Kenosha, WI
    Age
    20
    Posts
    1,089
    Post Thanks / Like
    Mentioned
    25 Post(s)

    Re: Just installed longer ports to my box, what now?

    All I know is that they are evenly spread out through the 32 inches, So two of them are about 3 inches away from the wall. & the PVC is flush with the box. all 15 inches are pretty much in.

    ---------- Post added at 12:33 AM ---------- Previous post was at 12:33 AM ----------

    & also Buck designed the box and did calculations on a program.




  6. #6
    pro-rabbit's Avatar
    pro-rabbit is offline Moderator pro-rabbit is a Supporting Member of the forum!

    pro-rabbit is a Supporting Vendor of the forum!

    Join Date
    Jan 2004
    Location
    OKC, OK
    Age
    32
    Posts
    12,395
    Post Thanks / Like
    Mentioned
    374 Post(s)

    Re: Just installed longer ports to my box, what now?

    sorry, I just seen the ports were forward, I thought they were up as well... Why do you have ports forward? What kind of car/truck is this in?


    What subs is this for? 3 4" ports would get you around 32-33hz I think but that would change with sub displacement and bracing displacement.




  7. #7
    xmakeafistx's Avatar
    xmakeafistx is offline CarAudio.com Elite

    Threadstarter


    Join Date
    Mar 2011
    Location
    Kenosha, WI
    Age
    20
    Posts
    1,089
    Post Thanks / Like
    Mentioned
    25 Post(s)

    Re: Just installed longer ports to my box, what now?

    There is no bracing which I'm sure is a problem. lol. I need some sort of guidance on it. & it is a box for two JL 15w6's.

    & they are facing forward because the original plan was to have them facing towards the trunk and not the front, but it didn't exactly work out because the way the box is I wasn't able to get the subs in with the ports facing back also.

    It is in an 03 jetta.

    Just for the record I only got the dimensions and port length/area ideas from buck, he had never made a full design for me because I had forgot to get back to him.

    I just don't want anyone to blame Buck for my ****** box.




  8. #8
    pro-rabbit's Avatar
    pro-rabbit is offline Moderator pro-rabbit is a Supporting Member of the forum!

    pro-rabbit is a Supporting Vendor of the forum!

    Join Date
    Jan 2004
    Location
    OKC, OK
    Age
    32
    Posts
    12,395
    Post Thanks / Like
    Mentioned
    374 Post(s)

    Re: Just installed longer ports to my box, what now?

    Why could you not load your subs then put the box in? To tight of a fit?




  9. #9
    xmakeafistx's Avatar
    xmakeafistx is offline CarAudio.com Elite

    Threadstarter


    Join Date
    Mar 2011
    Location
    Kenosha, WI
    Age
    20
    Posts
    1,089
    Post Thanks / Like
    Mentioned
    25 Post(s)

    Re: Just installed longer ports to my box, what now?

    Yes, the box would not fit in if the subs were in >.< I was pretty angered when I had realized that. I've been wanting to find 1 15 instead because I feel like the 2 15's is a little too much for my Jetta. I mean of course I want louder, but I think that will be achievable if my box takes up less area. I feel as if I lose a lot of sound because the subs are firing right into my trunk.




  10. #10
    pro-rabbit's Avatar
    pro-rabbit is offline Moderator pro-rabbit is a Supporting Member of the forum!

    pro-rabbit is a Supporting Vendor of the forum!

    Join Date
    Jan 2004
    Location
    OKC, OK
    Age
    32
    Posts
    12,395
    Post Thanks / Like
    Mentioned
    374 Post(s)

    Re: Just installed longer ports to my box, what now?

    I think with the little of space you should down grade to a single 15 or a set 12s.




  11. #11
    surreal's Avatar
    surreal is offline On my katy perry sht



    Join Date
    Jan 2010
    Location
    OK
    Posts
    615
    Post Thanks / Like
    Mentioned
    3 Post(s)

    Re: Just installed longer ports to my box, what now?

    Could be a few things. First off, cabin gain. Port forward wont get you as much low end gain, then the subs up will give good upper end gain. Then with your subs, I dont know those off the top of my head but normally the JLs like bigger boxes as "sq' oriented subs. You may have something of a small box causing premature rolloff.



    I do stuff

  12. #12
    xmakeafistx's Avatar
    xmakeafistx is offline CarAudio.com Elite

    Threadstarter


    Join Date
    Mar 2011
    Location
    Kenosha, WI
    Age
    20
    Posts
    1,089
    Post Thanks / Like
    Mentioned
    25 Post(s)

    Re: Just installed longer ports to my box, what now?

    that is also what I was thinking, but I cannot seem to get my current subs traded/sold.




  13. #13
    xmakeafistx's Avatar
    xmakeafistx is offline CarAudio.com Elite

    Threadstarter


    Join Date
    Mar 2011
    Location
    Kenosha, WI
    Age
    20
    Posts
    1,089
    Post Thanks / Like
    Mentioned
    25 Post(s)

    Re: Just installed longer ports to my box, what now?

    & thank you surreal for your response, but I honestly cannot understand any of it. I know my box isn't too small for the subs though, its actually a cubic foot too big >.< I think these only needed 5.25 cubes.




  14. #14
    surreal's Avatar
    surreal is offline On my katy perry sht



    Join Date
    Jan 2010
    Location
    OK
    Posts
    615
    Post Thanks / Like
    Mentioned
    3 Post(s)

    Re: Just installed longer ports to my box, what now?

    You may or may not to. Take the time to properly plan out a system. I currently dont have a substage and wont be purchasing til I have a box design and all planned out for what I want to do. Would suggest the same.

    Post a thread on what you really want to do with your system, the space you have, power and so on. We can better reccomend woofers for your objective and an enclosure type.



    I do stuff

  15. #15
    xmakeafistx's Avatar
    xmakeafistx is offline CarAudio.com Elite

    Threadstarter


    Join Date
    Mar 2011
    Location
    Kenosha, WI
    Age
    20
    Posts
    1,089
    Post Thanks / Like
    Mentioned
    25 Post(s)

    Re: Just installed longer ports to my box, what now?

    yeah, this system was just kind of a rushed thing. I plan to do much more in the future, once I get them sold. I cannot plan out a system properly because I am much too impatient, I just want to try a little of every brand/ every kind of sub.




Closed Thread

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts
1e2 Forum