exotic dreams
+1y
For detailed assistance you might try fiberglassforums.com. The way i would accomplish that task is to start with a 2 piece skeleton consisting of 1/2 mdf for the outsides with 2x2 wood stilts for added support. Then set up your speaker rings with wooden stilts. Then just wrap in fleece, fiberglass, and lay cloth or chopped mat for added strength. The mdf is easily painted and is an easy transition with body work if your going to paint it.