Different types of subwoofer boxes and their purpose (Bandpass, Ported
Types of enclosures - speaker boxes - easy explanation
Amazon.com: American Sound Connection Compatible with Chevy Silverado 2007-2013 Ext Cab Truck Single 10" Subwoofer Box Sub Enclosure and S-W10D4 Car Audio Type S Series Sub Dual 4 Ohm 1200W Peak 10"