I just picked up two sheets of 1" Appleply and one sheet 1/2". Going to build two subwoofers using two Tempest-X 15" woofers per box. The boxes will be 6 cu ft, 1-1/2" fronts and tops and 1" on sides, backs and bottoms with internal bracing. I'll probably do 3/4" roundovers on all edges and paint black with Duratex. Since they will be pretty heavey, I was thinking of mounting them on casters. Any thoughts on that? The subs will be driven by Sanway FP9000 amps.
I'll post pictures once I start cutting.