K-dawg

what do you actually make the box out of, I've read countless posts on here telling about laying down the fiberglass but I can't seem to pickup on what the actual box is made of before that. just answer that one question and I'll be on my way, please reside from flaming me about the search feature.

Jtufts

we usaly dont flame here , donte qute me on this but its made with a mixture of fiberglass jelly's crap ,besides that i got no clue i am a wood guy

ChillPhatCat

Fiberglass enclosures are typically just that, fiberglass. To build anything out of fiberglass, the basic concept is that you lay the first layer of dry fiberglass cloth onto a non-stick surface or into a mold and then brush or pour on a thin layer of fiberglass resin which is mixed by you with a hardener (just like you would epoxy or bondo). As that layer hardens the resin soaks into the pores of the cloth to make a hard plastic like material. Once the first layer has hardened, you don't need the mold any more and you can add as many layers onto that as you need.

If you want some good advice on how to build a speaker box specifically, just do a search in the Car Audio tech section for thread titles with the word "fiberglass" and you should get plenty of good information on different techniques.