Closed Thread
Results 1 to 10 of 10

Reload Thread: does this sound right?

  1. #1
    bass maniak's Avatar
    bass maniak is offline Team Poundin Sound



    Join Date
    Aug 2002
    Location
    Faust, Alberta ( CANADA )
    Age
    26
    Posts
    3,182
    Post Thanks / Like
    Images
    113
    Mentioned
    0 Post(s)

    does this sound right?

    a box for 2 magnum d2s does it sound right?
    3.91319 subic feet before any displacment
    port tuned to 32 hz which is 14 inchs high and 3 inchs wide and 21.47 inchs long.
    if i am correct the port will take up .6523 cubic feet and each mag takes up .10 cubic feet which would add up to .852300 cubic feet.
    so including displacment the box would be 3.06089 cubic feet.
    did i calculate this box right?
    also does this sound right for a pair of mags b/c i think i might have screwed up with the sub parameters?
    if it helps any i am using winisd.



    Chuch AKA Tha Mad Scientist

    Team Poundin Sound
    Joker Kustoms
    Boost Junkie Motor Sports
    Street Poetry Productions
    Wreaking Havoc Records




  2. #2
    bass maniak's Avatar
    bass maniak is offline Team Poundin Sound

    Threadstarter


    Join Date
    Aug 2002
    Location
    Faust, Alberta ( CANADA )
    Age
    26
    Posts
    3,182
    Post Thanks / Like
    Images
    113
    Mentioned
    0 Post(s)

    Re: does this sound right?

    comone isnt there anyone that can tell me?????????????



    Chuch AKA Tha Mad Scientist

    Team Poundin Sound
    Joker Kustoms
    Boost Junkie Motor Sports
    Street Poetry Productions
    Wreaking Havoc Records

  3. #3
    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: does this sound right?

    The only thing I see different is I got a port length of 22.75". But even if you go with 21.5" long you still get 32.5Hz (or so). To make thing a little bit easier for your self, just carry out to one decimal place. Often time you will find out even if the port is .25" longer, it may not make that big of a difference...maybe only like 1/8 of an Hz or something.

    Example: your box 4cu'
    -@31Hz port should be 24" L
    -@32Hz port should be 22" L
    -@33Hz port should be 20.5" L



    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)

  4. #4
    bass maniak's Avatar
    bass maniak is offline Team Poundin Sound

    Threadstarter


    Join Date
    Aug 2002
    Location
    Faust, Alberta ( CANADA )
    Age
    26
    Posts
    3,182
    Post Thanks / Like
    Images
    113
    Mentioned
    0 Post(s)

    Re: does this sound right?

    thanks for the help man. all i need to know now is if it sounds right for a couple of magnum d2s b/c im not 100% sure i got the parameters right on the d2.
    so if somone can tell me if this is right im ready to make the box.
    these are the parameters i got
    qts: 0.37
    vas: 38.5 liters
    fs: 32 hz
    re: 3.6 ohm
    le: 0
    xmax: 24 mm
    z: 0
    qms: 4.05
    qes: 0.41
    spl: 88.4 db
    pe: 600
    bl: 18.60
    dia: 12 inchs
    sd: 0.050 m^2

    are these parameters right for the magnum d2?
    once again the program i am using is winisd



    Chuch AKA Tha Mad Scientist

    Team Poundin Sound
    Joker Kustoms
    Boost Junkie Motor Sports
    Street Poetry Productions
    Wreaking Havoc Records

  5. #5
    bass maniak's Avatar
    bass maniak is offline Team Poundin Sound

    Threadstarter


    Join Date
    Aug 2002
    Location
    Faust, Alberta ( CANADA )
    Age
    26
    Posts
    3,182
    Post Thanks / Like
    Images
    113
    Mentioned
    0 Post(s)

    Re: does this sound right?

    cant any one out there tell me????????????????????



    Chuch AKA Tha Mad Scientist

    Team Poundin Sound
    Joker Kustoms
    Boost Junkie Motor Sports
    Street Poetry Productions
    Wreaking Havoc Records

  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: does this sound right?

    D@m your impatient!! LOL

    If you were to go with what you are saying, then your box after all displacement, would be 3.06089cu' after all displacement. I get 22.87" long for the port wich is 14" X 3" tuned to 32Hz. 24.4" L after sub displacement.

    To make things easier, let's only go to on decimal place...

    a 4cu' box with a port that is 14" X 3" needs to be 22" long. Using 3/4, the total port displacement will be 0.8. sub displacement you said is 0.1 per sub...so 0.2.

    4 - (0.8 + 0.2) = 3.0cu' of air space.

    Pretty much the same as you got.



    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
    ngsm13's Avatar
    ngsm13 is offline BSEE



    Join Date
    Sep 2002
    Location
    Cincinnati, OH
    Posts
    35,730
    Post Thanks / Like
    Images
    20
    Mentioned
    0 Post(s)

    Re: does this sound right?

    i would go larger for 2 magnums ported man...optimal should be pretty close to 2 cubes each AFTER all displacement. I'd look for about 1.9-2.1 cubes each...so 3.8-4.2 cubes after displacement. If you can get a lil more space for the box...i got exact plans for a magnum box at home that is 4 cubes after displacement and exact port that utnes it to 32hz exactly. LMK, and i'll get the measurements for you when i'm at home. peace

    NG




    http://crunktimes.com/ct/
    nG - BSEE

  8. #8
    bass maniak's Avatar
    bass maniak is offline Team Poundin Sound

    Threadstarter


    Join Date
    Aug 2002
    Location
    Faust, Alberta ( CANADA )
    Age
    26
    Posts
    3,182
    Post Thanks / Like
    Images
    113
    Mentioned
    0 Post(s)

    Re: does this sound right?

    i dont know if i can go much bigger man, thats why i am going to specs.
    but ill check out ur box anyway i just might be able to fit it.
    so 3 cubes tuned to 32hz wont be that good for a couple mags?



    Chuch AKA Tha Mad Scientist

    Team Poundin Sound
    Joker Kustoms
    Boost Junkie Motor Sports
    Street Poetry Productions
    Wreaking Havoc Records

  9. #9
    ngsm13's Avatar
    ngsm13 is offline BSEE



    Join Date
    Sep 2002
    Location
    Cincinnati, OH
    Posts
    35,730
    Post Thanks / Like
    Images
    20
    Mentioned
    0 Post(s)

    Re: does this sound right?

    i'd give them at least 4 cubes for two man. My AIM name is ngsm13...hit me up on there. peace

    NG




    http://crunktimes.com/ct/
    nG - BSEE

  10. #10
    bass maniak's Avatar
    bass maniak is offline Team Poundin Sound

    Threadstarter


    Join Date
    Aug 2002
    Location
    Faust, Alberta ( CANADA )
    Age
    26
    Posts
    3,182
    Post Thanks / Like
    Images
    113
    Mentioned
    0 Post(s)

    Re: does this sound right?

    i dont have aim
    and i dont have much more room then 36 by 15.5 by 15.5

    maybe the box shape u have would work tho pm me or just post it up.



    Chuch AKA Tha Mad Scientist

    Team Poundin Sound
    Joker Kustoms
    Boost Junkie Motor Sports
    Street Poetry Productions
    Wreaking Havoc Records

Closed Thread

Similar Threads

  1. Sub making strange sound
    By er1kkull in forum Subwoofers
    Replies: 8
    Last Post: 08-08-2005, 04:16 AM
  2. whi is my amp making this sound????
    By Juice in forum Amplifiers
    Replies: 3
    Last Post: 12-05-2003, 12:05 PM
  3. best sound blocks away
    By mr_f4ke in forum Subwoofers
    Replies: 10
    Last Post: 10-24-2003, 11:06 AM
  4. sound deadener
    By mrmafioso04 in forum General Discussion
    Replies: 5
    Last Post: 08-29-2003, 06:35 PM
  5. Subs hit no sound tho
    By paul83085 in forum Subwoofers
    Replies: 5
    Last Post: 07-31-2003, 10:44 PM

Posting Permissions

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

1e2 Forum