Closed Thread
Results 1 to 3 of 3

Reload Thread: box calculations

  1. #1
    big_mofo's Avatar
    big_mofo is offline Im Da *** Man!!!



    Join Date
    Jul 2006
    Location
    Hammond,Louisiana
    Posts
    1,456
    Post Thanks / Like
    Mentioned
    0 Post(s)

    box calculations

    ok so im tryin to figure out the port length for my box, which will be 8cuft tuned to 33hz. i did the equation(LV=[(1.463x10^7xR^2)]/[(Fb^2xVb)]-1.463xR) well R^2=7in, Fb^2=1089, Vb=13824. and the length i got was 37in. does that sound right, if not what do i need to do? thanks for any input.
    Chris R.



    2004 Hyundai Santa Fe
    Radio: Pioneer DEHP7900BT w/ Zune Core Adapter
    Components:Kicker RS65.2
    Comp Amp:Massive P400.4(to be replaced with KKR650.4)
    Sub Amp:KKR zx2500.1
    Subs: 1 Vibe Audio Space15
    Electrical: lots of welding 1/0 an knu products, kinetik 1400 an 2000
    Deadener:seckond skin or fatmat, depends on funds

    Refs: revrider1(bought from)/Gianotti(bought from)




  2. #2
    xluben's Avatar
    xluben is offline CarAudio.com Veteran



    Join Date
    Jun 2006
    Location
    Minneapolis, MN
    Posts
    2,129
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: box calculations

    how big is the port?

    what units are your measurements (all in inches)?




  3. #3
    big_mofo's Avatar
    big_mofo is offline Im Da *** Man!!!

    Threadstarter


    Join Date
    Jul 2006
    Location
    Hammond,Louisiana
    Posts
    1,456
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: box calculations

    Quote Originally Posted by xluben
    how big is the port?

    what units are your measurements (all in inches)?
    it will be a dual chamber box, and 3.5in port width on each side. each sub will have roughly 4cuft, and yes all the measurments are in inches. the first equation was done for a box with one port and last night i redid it for a box with 2 seperate ones and got a Lv of 18.6in. if that makes no sense ill put the 2nd equation to show you.



    2004 Hyundai Santa Fe
    Radio: Pioneer DEHP7900BT w/ Zune Core Adapter
    Components:Kicker RS65.2
    Comp Amp:Massive P400.4(to be replaced with KKR650.4)
    Sub Amp:KKR zx2500.1
    Subs: 1 Vibe Audio Space15
    Electrical: lots of welding 1/0 an knu products, kinetik 1400 an 2000
    Deadener:seckond skin or fatmat, depends on funds

    Refs: revrider1(bought from)/Gianotti(bought from)

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