Fiberglass Box sizing

[rhetorical]

I'm going to be building a fiberglass box for a 10" sub in my spare tire well. After I've made it and such, how do I measure the size of it? and say it's too big, how do I decrease the size of it? Thanks

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[the_flatlander 10+ year member]

you want to make plans before you start making it so you make it the right size

 

[InhumanAcura 5,000+ posts]

If its a sealed 10" box, you should only need .75 - 1^3', Just build a box in the tire well...

 

[dbornotdb 10+ year member]

Use packing peanuts. It will fill everything pretty good. fill the sub box up, then dump all the peanuts into a regular cardboard box. Level them off pretty good, mark the top of them. Measure the heigth of the mark, multiply it by the width and depth and you have the airspace.

 

If you have decrease some space, build a box out of scrap MDF, sealed up airtight to the space you need subtracted.