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basshead7890

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Posts posted by basshead7890

  1. SSA Dcon 12"

    I really like that sub!! How would I go about measuring my trunk though?

    http://www.soundsolutionsaudio.com/index.php/downloads/enclosure-designs/item/12-optimal-ported-225-ft3.html?category_id=23

    http://www.soundsolutionsaudio.com/index.php/downloads/enclosure-designs/category/12-dcon.html

    here are some cut outs for the box

    measure the width and height of the opening of your trunk, then the width, height and depth of inside of your trunk

  2. You need to use the net volume when finding the needed port length, not the gross volume. Otherwise, you can make a situation where the port would need to take up the entire box and leave you with no chamber volume.

    Use the net volume you want to find port length, find the disacement of the ports, then work backwards to find the dimensions needed to give you that net volume after sub and port displacements.

    Ok thanks again, I've got this port thing down now and I realized that I don't have the space for ported. This is what I'm probably going to build its sealed 5.30 cubes after sub displacement

    xconsealedbox.png

  3. I just ran the dimensions on the design you just posted because I knew the port area looked too large to be tuned that low with a 21" length. The box you have right now is 6ft^3 tuned to 41hz.

    35"x33"x14" = 7.63ft^3 before displacements

    4.75"x12.5"x20.75" = .713ft^3, 1.426ft^3 for both

    Subtract .25ft^3 for sub displacement, and you're right around 6ft^3

    A 6ft^3 box with a pair of 21" long 12.5"x4" ports give you a 41hz tuning.

    I just done it by hand and my length came out to be 27.676

    this is where i got the 21.45" for the length,

    slotportonline.png

    slotonline.png

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