Great thoughts Matt.
We used to have a couple guys in a van, with a bikini girl painted on both sides and front hood. They worked with one of our speaker companies here in the west. They independently went and made their own Fiberglass enclosures covered in gray almost carpeting. with 15 inch drivers and tweets. More car audio style. Also before 5.1.

They used to sell them for 150 each. We all had them hooked to old vintage receivers. even today most are still around {Built like tanks}. Before I moved in with my wife one of my roommates still had a pair. Once and a while find them and reminisce of the old van. They lived a couple blocks away from one of my childhood homes. Would make for a great A/B with current technologies.