How to build sub box-fiberglassed

I'm going to make my own sub box to fit my car and I would like to know how to do it. I know all the materials I need like the fiberglass and the resin and gloves, etc. I just would like to know what kind of dimensions I would need. Like...how much air space do I allow?? Thanks

[jamcllw]

Depends on what kind of subs you have as far as airspace.

find the specs on your sub, that will tell you how much airspace you need

Right now I have 3 audiobahn 10's in a bandpass box. I'm thinking of selling these and getting me some other subs but I really don't know. If I put these 3 10's in a fiberglassed enclosure, would they hit harder?? Or...should I sell these and get 2 12's to put in there. I want to leave my backseat in there and mold everything into the back of the trunk. thanks for the help

fiberglass enclosures in general dont usually sound as good as wood enclosures.......... but they look alot nicer.

ur subs wont be louder though

yeah what sweet said