Closed Thread
Results 1 to 8 of 8

Reload Thread: Needed Expert Help

  1. #1
    Bigrick31's Avatar
    Bigrick31 is offline Carpe Diem



    Join Date
    Mar 2004
    Location
    Mid*Cal
    Posts
    3,557
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Needed Expert Help

    Hey i am going to start building my second box i want it for 2 rexxx the new ones i went to the website and it gives you dimensions but does not tell you what dimensions are what can some 1 help i want a square ported box for these the port is square and i am putting it in the back of my eclipse i want the bottom of the port to be level with the top of the rear seat can some 1 help







  2. #2
    Trixter's Avatar
    Trixter is offline Keepin it Simple



    Join Date
    Apr 2002
    Location
    Kenosha, WI
    Age
    36
    Posts
    2,608
    Post Thanks / Like
    Images
    29
    Mentioned
    0 Post(s)

    Re: Needed Expert Help

    I can try, but you have to promise me that you will use proper punctuation in your next post. (It makes it a little easier to read.)



    2006 Jeep Liberty
    Adire Audio, Cadence, Clarion, MB Quart

    Lv = [(14630000 x R^2) / (Fb^2 x Vb)] - 1.463R
    *Vb = vol. in cu"
    **R = sq.rt. A / Pi (for square/slot port)

  3. #3
    Bigrick31's Avatar
    Bigrick31 is offline Carpe Diem

    Threadstarter


    Join Date
    Mar 2004
    Location
    Mid*Cal
    Posts
    3,557
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Needed Expert Help

    ok. I promise to use the proper punctuation in my next post.




  4. #4
    Trixter's Avatar
    Trixter is offline Keepin it Simple



    Join Date
    Apr 2002
    Location
    Kenosha, WI
    Age
    36
    Posts
    2,608
    Post Thanks / Like
    Images
    29
    Mentioned
    0 Post(s)

    Re: Needed Expert Help

    What box do you have in mind? Under their boxes for dual, they have sq and sql. I imagine that you are looking at the box for the 12's? Not too sure what your looking at, but the page I'm on has letters that reference each side.



    2006 Jeep Liberty
    Adire Audio, Cadence, Clarion, MB Quart

    Lv = [(14630000 x R^2) / (Fb^2 x Vb)] - 1.463R
    *Vb = vol. in cu"
    **R = sq.rt. A / Pi (for square/slot port)

  5. #5
    Bigrick31's Avatar
    Bigrick31 is offline Carpe Diem

    Threadstarter


    Join Date
    Mar 2004
    Location
    Mid*Cal
    Posts
    3,557
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Needed Expert Help

    yea the page is for the box for dual 12s. my box will have about 3.5cuft of airspace. there is the letters and measurements but not every letter is shown on the pic of the box. only a few letters are shown. my box is going to be fiberglassed into the rear of my eclipse so the dimensions wont be the same so i dont know what to do about the port. on their site it says to make it 12" long and thats all i can gather from it. and on my other box i didnt have to calculate what the box was tuned to cuz there was no port. so i dont know how to tell what its tuned to. if thery are tuned the same does it matter how the port is made? oh and i wanted a sql box.




  6. #6
    Trixter's Avatar
    Trixter is offline Keepin it Simple



    Join Date
    Apr 2002
    Location
    Kenosha, WI
    Age
    36
    Posts
    2,608
    Post Thanks / Like
    Images
    29
    Mentioned
    0 Post(s)

    Re: Needed Expert Help

    If you keep the same size of the box on the site, then the port and tuning will remain the same too. Shape does not matter. The site says that "D" (port height) is 12" tall, "F" (port width) is 4" wide. This gives you 48sq" of port area. The pic also shows the two lengths of both port walls. "G" being 18" and "H" being 5.5". Since they are simply measuring the wall lengths to show how to build it, you will need to add 2" (1/2 the port's width, and you measure down the center of the port) to get the effictive port length, that being 27.5" long. Now that you know the port area and the port length, just keep the area 48sq" and the length the same and you should have no problems. Just remember to try and keep the 9:1 (heigth:width) ratio when figuring out port area.



    2006 Jeep Liberty
    Adire Audio, Cadence, Clarion, MB Quart

    Lv = [(14630000 x R^2) / (Fb^2 x Vb)] - 1.463R
    *Vb = vol. in cu"
    **R = sq.rt. A / Pi (for square/slot port)

  7. #7
    Bigrick31's Avatar
    Bigrick31 is offline Carpe Diem

    Threadstarter


    Join Date
    Mar 2004
    Location
    Mid*Cal
    Posts
    3,557
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Needed Expert Help

    hey just one more question. I can do about 3.5cuft of airspace in my car but the rexxx specs dont call for that much. should i just use their specs or should i go for the 3.5. or would the screw up the sound?




  8. #8
    Trixter's Avatar
    Trixter is offline Keepin it Simple



    Join Date
    Apr 2002
    Location
    Kenosha, WI
    Age
    36
    Posts
    2,608
    Post Thanks / Like
    Images
    29
    Mentioned
    0 Post(s)

    Re: Needed Expert Help

    I would go with the spec first. If you don't like it then change it. At least you'll have tried what they recommended first.



    2006 Jeep Liberty
    Adire Audio, Cadence, Clarion, MB Quart

    Lv = [(14630000 x R^2) / (Fb^2 x Vb)] - 1.463R
    *Vb = vol. in cu"
    **R = sq.rt. A / Pi (for square/slot port)

Closed Thread

Similar Threads

  1. check this out, RF's take on alternator size needed
    By so n so chicago in forum General Discussion
    Replies: 21
    Last Post: 03-26-2004, 04:56 PM
  2. Box expert needed
    By cyantist in forum Enclosure Design & Construction Help
    Replies: 1
    Last Post: 03-22-2004, 10:08 AM
  3. Best subwoofer info needed - URGENT decision needed
    By bestkiter in forum Subwoofers
    Replies: 1
    Last Post: 12-26-2003, 02:52 PM
  4. Pro installers needed!
    By boomsta in forum Enclosure Design & Construction Help
    Replies: 4
    Last Post: 11-02-2003, 03:49 PM
  5. 75 RMS speakers NEEDED!!
    By quiimari in forum Speakers
    Replies: 9
    Last Post: 07-25-2003, 02:32 AM

Posting Permissions

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