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porting a sealed box?

Discussion in 'Subwoofer Box and Custom Fabrication' started by crazywhiteboy91, Oct 3, 2010.

  1. crazywhiteboy91

    crazywhiteboy91 Full Member

    ok ive got 2 solobaric 12''s on a kicker ix2302 amp. i got em in a sealed box. i know aported box is louder. was wondering if i can port my currrent sealed box and if so how do i tune my ports?
     
    crazywhiteboy91, Oct 3, 2010
    #1
  2. Fbmowner

    Fbmowner Full Member

    As far as i know the only way youll be porting a sealed box is if that sealed box is HUGE
     
    Fbmowner, Oct 4, 2010
    #2
  3. Klinkster

    Klinkster Full Member

    I agree.

    If you have the proper sub in the proper sealed box, you have no extra volume for a port.

    As far as I know, sealed boxes are all small and maximize every inch for this reason.

    I'm sure Viking or Ranger can give you details as I'm a scrub about boxes.
     
    Klinkster, Oct 4, 2010
    #3
  4. crazywhiteboy91

    crazywhiteboy91 Full Member

    ok guys thanks for the replies. ive had ported boxes on other kinds of twelves and they really hit. think i might tear the back jumper seats out and use the whole extended cab to build a box. any idea on kicker l5s?-
     
    crazywhiteboy91, Oct 4, 2010
    #4
  5. TE5LA

    TE5LA Guest

    You can certainly port a sealed box, as long as the port is properly tuned. Whether it will be louder is another story. Ported boxes aren't necessarily louder, just more efficient, so they produce more volume with LESS power. This doesn't mean that their maximum output is more. In fact, sealed enclosures can handle more power than ported boxes.
     
    TE5LA, Oct 9, 2010
    #5
  6. Ranger SVO

    Ranger SVO Full Member

    I am going to seriously and strongly disagree.

    One of the main characteristics of vented enclosures is that there is lower cone excursion near the box resonant frequency. This characteristic results in relatively Higher Power Handling and lower modulation distortion.

    References
    1. R Small, "Vented-Box Loudspeaker Systems" JAES, June through October 1973
    2. M Lampton and L Chase, "Fundamentals of Loud Speaker Design" Audio December 1973
    3. V Dickason, "The Loudspeaker Design Cookbook" Audio Amatuer Press, October 1991

    There are many other referances, I don't have time to look them up right now
     
    Ranger SVO, Oct 13, 2010
    #6
  7. crazywhiteboy91

    crazywhiteboy91 Full Member

    lol well i built a custom box to fit in the back of my ranger to hold 3 12's its a sealed box dont have a clue the size but its huge.
     
    crazywhiteboy91, Oct 22, 2010
    #7
  8. TheViking

    TheViking Well-Known Member

    If you need help in determining box volume...we can help. just give us the dimensions...preferably drawn out and all lengths, widths heights, etc written on the drawing
     
    TheViking, Oct 22, 2010
    #8
  9. pedro quiroga

    pedro quiroga Well-Known Member

    WxHxD divided by 1728 will give you your internal vol.

    measure using the internal dimensions. then subtract the subs displacement.
     
    pedro quiroga, Oct 22, 2010
    #9
  10. crazywhiteboy91

    crazywhiteboy91 Full Member

    well this box is a weird shape. its big heres a pic
     

    Attached Files:

    crazywhiteboy91, Oct 24, 2010
    #10
  11. Ranger SVO

    Ranger SVO Full Member

    Here is how I would determine volume on something like that. First, I don't need to be super accurate, just a good close approximation.

    Make you a box (cardboard, duct tape), just something simple. Make it 12 by 12 by 12. Fill it with something like packing peanuts. Then fill your box. Simple right.

    I've esimated many odd shaped boxes this way. I like simple, if it takes 3 and a half boxes to fill your box then we have 3-1/2 cu ft. I like simple, it works
     
    Ranger SVO, Oct 24, 2010
    #11
  12. tommy2tone

    tommy2tone Full Member

    That's good advice right there Ranger!
     
    tommy2tone, Oct 24, 2010
    #12