I had a pair of Centrex speakers that were a 3-way with a 10" woofer, and a cone mid and tweeter.
The enclosures were 3/4 inch MDF, covered in vinyl. Rather heavy cabinets, really. The drivers were as cheap as it gets, same with the xovers.
I recapped the xovers, and stuffed a little polyfil in them.
They didn't sound that bad for a 5 dollar yard sale item. Sold them to a co-worker for 10 bucks. Though his JBL L-26's sound way better, he likes to use all four sometimes....