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Thread: Speaker Box - Fiberglass or wood

  1. #1
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    Speaker Box - Fiberglass or wood

    I've recently gotten two PA Fubar-12s(2k watts) and i am trying to decide on a speaker box design and enclosure.

    I'm not sure if i should use wood and carpet it, or go the fiberglass route.

    I'm also not sure if i am going to use a ported box or not(not quite sure how to do that)

    i'm kinda fishing for comments/suggestions/personal experences
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  2. #2
    Maximum Bitrate Woofnstuff's Avatar
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    the fabrication thread my be a better place for this.

    you could make it out of MDF or Plywood, then glass the joins.
    that way you get the density of the wood and the strength.

    unless you want to put it in a weird shaped space, then glass might be better

    also look thru the FAQ's
    and have a look at www.12volt.com

    but this page more so
    http://www.the12volt.com/caraudio/boxcalcs.asp

  3. #3
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    It depends on what you want to do with your box and where you want to put it. Fiberglass is a lot more work and will ultimately be much more expensive. Read the FAQ's and decide what you're hoping to accomplish first.

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    The decision between ported/sealed depends on what you want out of the subs... And judging by the brand, I'm guessing you're going for purely loud, which means you're going to get the most by porting, in most cases.

    Now, I've never used these subs, so I don't know anything about them... Whether they thrive in big/small/ported/sealed enclosures. THAT is what you need to look into first... Whether they're going to require a big or small box, and whether that box needs to be ported or sealed. Also, what kind of space are you looking at for this install? What kind of vehicle is it going in? What's you fab experience with wood and/or f/g? What tools do you have to use?

    (edit: Noticed you have an OBS Tahoe in your sig... Plenty of room for whatever you decide.)
    Play with it, 'til it's broke.

  5. #5
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    here is some more info on the speakers that i dug up

    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
    now that is PER speaker right? so two speakers i double the measurements? or when i build the box, do i basically have 2 separate enclosures(like a wall between the speakers?)
    1997 Chevy Tahoe
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  6. #6
    Maximum Bitrate Woofnstuff's Avatar
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    if you are running them in mono one enclosure should work fine, because they are both doing the same thing.. dont run subs in stereo, they dont work as well..
    just remember to brace the box in the middle a bit of 2"x2" wood works well, or if you are putting a wall in the middle and splitting them up thats fine.

    you could test it.. build the box as one open box, but keep it so you can still put the top off, and test it with a partition in the middle and one without.

    ideally you want the box perfectly sealed but for testing the theory screwed together well will work.

  7. #7
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    Quote Originally Posted by Woofnstuff View Post
    if you are running them in mono one enclosure should work fine, because they are both doing the same thing.. dont run subs in stereo, they dont work as well..
    just remember to brace the box in the middle a bit of 2"x2" wood works well, or if you are putting a wall in the middle and splitting them up thats fine.

    you could test it.. build the box as one open box, but keep it so you can still put the top off, and test it with a partition in the middle and one without.

    ideally you want the box perfectly sealed but for testing the theory screwed together well will work.
    i think i am going to go with a wall in the middle, and yes, i will be running in mono.

    i was thinking of making a 'slot' in the middle for my amp to get mounted anyway.(behind peice of 1/2" acrylic glass)


    on the ports, the 4x8.75" does it really need to be 8.75" long? or can i angle them?

    and i assume that it is okay to use a piece of PVC for this?(schedule 40 for example?)
    1997 Chevy Tahoe
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  8. #8
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    Quote Originally Posted by fischb22 View Post
    on the ports, the 4x8.75" does it really need to be 8.75" long? or can i angle them?

    and i assume that it is okay to use a piece of PVC for this?(schedule 40 for example?)
    You can angle them but make sure to account for the angle in your measurements. You can use PVC but you will want to flare the ends to prevent chuffing. It's easier to buy a kit from someone like precision port with the flares built in than it is to make your own. Hit google, it will be your best resource for box building.

  9. #9
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    okay, thanks, i was thinking about actually checking on ebay for pre-made ports
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  10. #10
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    http://www.parts-express.com/ has a fairly large selection of ports.

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