sub boxes online?
I built an incredibly solid, totally air-tight sealed box for a single 12W6 in about 4 hours and at a cost of less than $50. Most of the pre-built boxes that you would buy are poorly built with 1/2" MDF at best, and particleboard at worst. Plus they are stapled or nailed together and are only sealed by a cheap bead of glue. I built my box out of 3/4" MDF and it is held together with screws every 4 inches along the edges. All the inside edges are sealed with silicone sealant (actually it's this flexible sealant stuff that I got at the hardware store).
You could probably pay someone to make you a box like mine for about $200. It would be optimal, and would be a million times better than any pre-packaged box.



