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Thread: Speaker Box - Fiberglass or wood

  1. #11
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    Quote Originally Posted by SuperJ View Post
    http://www.parts-express.com/ has a fairly large selection of ports.
    Thanks - Ordered!

    how big of a factor is placement? should they be on the same face as the speaker? back of the box? sides? out the top(bad idea? small toys could fall in?)
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  2. #12
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    The question was never answered about what you're looking to get out of your substage... What kind of music do you listen to and all of that information determines a LOT in the box design. Ordering a port isn't necessarily necessary... You could use a slot port. Heck, you can't even look at your port size until you have dimensions on your box, and know what frequency you're going to tune it to. Port-fire and driver-fire directions are also determined a lot by the desired result.

    There is a TON of math that goes into building an enclosure correctly, whether it be for SPL, SQ, or even when it's purely a budget-build...
    Play with it, 'til it's broke.

  3. #13
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    Quote Originally Posted by thekl0wn View Post
    The question was never answered about what you're looking to get out of your substage... What kind of music do you listen to and all of that information determines a LOT in the box design. Ordering a port isn't necessarily necessary... You could use a slot port. Heck, you can't even look at your port size until you have dimensions on your box, and know what frequency you're going to tune it to. Port-fire and driver-fire directions are also determined a lot by the desired result.

    There is a TON of math that goes into building an enclosure correctly, whether it be for SPL, SQ, or even when it's purely a budget-build...
    Code:
    # Sealed box: 1.2 cu. Ft.
    # Ported box: 2 cu. Ft.
    # Port Size (Dia x L): 4" x 8.75"
    # Number of ports: 1
    i was going to go by the manufacture suggestion for that speaker.

    as far as type of music, i listen to it all(rock, metal, rap, country, jazz, classical,etc)

    i'm going to use a 'missile'/NOS style switch on the remote line going to the amp, (also so i can kill it when in a neighbor hood after night fall)
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  4. #14
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    thekl0wn's Avatar
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    I can assure you that by the specs given there, you are going to produce nothing more than a fart-box. That setup is tuned at 40hz... Way too high, even for a bass-head...

    In all honesty, for your wide variety of musical tastes, a sealed enclosure may be your best bet. It will blend with your mids/highs better and sound better than an ill-designed box. Also, keeping the subs separated versus a common chamber can be argued either way, though I tend to lean on common chamber. (and common slot port in a vented application.)

    Which, if you go sealed and don't have to worry with the ports, that makes going f/g for some of the enclosure MUCH easier!
    Play with it, 'til it's broke.

  5. #15
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    in theory sealed will give you a tighter harder bass and a ported will give you a more extended base...

    you can start with it sealed then if its not what you liked put the ports in

  6. #16
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    okay,i guess i will start off with a sealed box, and see how that works out
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  7. #17
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    okay, i've worked up a design using google sketch it.

    sealed box, speakers call for 1.2 cu ft per speaker. it does not show it well, but their is a partition between the two speakers

    do you guys think that will be good?
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  8. #18
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    You will have to use those as your internal dimensions, which will put you over the rear seat by an inch or so. (I think we have right at 18" from the cargo deck to the top of the seat)
    Play with it, 'til it's broke.

  9. #19
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    Quote Originally Posted by thekl0wn View Post
    You will have to use those as your internal dimensions, which will put you over the rear seat by an inch or so. (I think we have right at 18" from the cargo deck to the top of the seat)
    oooh, good point, i'll have to run outside and check the height.

    and that should be outside dimensions, according to the calculator at http://www.the12volt.com/caraudio/boxcalcs.asp

    on the wedge enclosure 14.375 18 4.5 18 .75
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  10. #20
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    i thought about this design also, which would allow me to mount the amp & cap between the speakers.(note that still uses 2 seperate chambers same size as above, just with a middle(unused ) chamber to make room for the amp. and these dimensions still would allow the box to fit in the trunk
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