HELP! Trying to Build a Custom Box .. - Chevy Impala SS Forum
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post #1 of 6 (permalink) Old 08-20-2002, 02:36 PM
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I've been trying to get some ideas on ways to get a customized box in my trunk so I atleast have some space. Right now I've got 3 10's and it takes up the whole frigging trunk. I've never done this before so I'm not even sure how to approach it. What materials should I use? I've seen some guys use fiberglass & bondo? I know how to build boxes with the correct airspace it's just the the trunk is setup really funky.

Any help or suggestions would be appriciated.

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post #2 of 6 (permalink) Old 08-20-2002, 08:03 PM
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for materials, use a 3/4 inch MDF board, its brownish, and really smooth and dense, use some coarse 1 1/2 inch drywall screws, and seal each part of the box together with white indoor/outdoor caulking, after you assemble the box, reach inside each sub opening, and run a bead along all the inside edges, then it will be totaly sealed. [img]smile.gif[/img]

As for the size, it really depends on the sub. Read the reccomondations for the subs, and go from there. just use Length x Width x Height, for for the calulation, (dont hold that to me im not very good at math etc. AT ALL)

you also can measure your existing sub box size and then just alter the angles etc, to get it to sit further back in the trunk.

When i build boxes, i basicly try to take the rough measurements of the "real" box and just adjust the shape to get it to fit where i want. you always can take it apart and try again if its not right (somethin else that ive done!)
post #3 of 6 (permalink) Old 08-21-2002, 09:45 AM
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I have worked with all of the materials you've mentioned. The question you have to answer is "Are you willing to change the subs (number/type/specs) or the enclosure (type/dimensions)?"

If you want to stick with your current configuration, and you are satisfied with the overall sound and performance of the box, then you're pretty well stuck with it. And that's a good thing. But if you NEED more trunk room (i.e. to store a spare tire or other stuff) you will have to change the dimensions of the box, type of enclosure (isobaric, aperiodic, sealed etc...) or eliminate one of the drivers and it's enclosure.

As for building the box itself, all of the previously mentioned tips are right on. As a work around for your current box, You can also try 'shortening' one of the walls of the box on a table saw, and fabricating a new side, and adding some acoustic foam, or even fiberglass. This will allow the drivers to perform in a smaller box without sacrificing perfomance.

If you have pics from your existing install that would help us understand your challenges and give better advice.

Best of Luck

post #4 of 6 (permalink) Old 08-21-2002, 11:27 AM
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Just to add a couple of things I forgot to mention..

The Sub's are 3 10" MTX 7000 (the older black ones, and I think there rating is like RMS 700 watts). The current configuration is a chambered sealed box.

I'll try to get some pictures up to give you an idea what I'm working with.

post #5 of 6 (permalink) Old 08-21-2002, 03:25 PM
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if you want an idea for an instal do a search for my instal can see what i built (and now have torn out to change completely! :eek [img]smile.gif[/img]
post #6 of 6 (permalink) Old 08-22-2002, 04:21 PM
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What are the box specs? Required air space, speaker mounting depth? Are you sold on 3 tens, or have you thought about 2 tens or maybe a single 12?

Just wondering,
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