Q-Logic QB-110.3 Single 10" bandpass subwoofer box at Crutchfield
Pyle Plqb10 10 Inch 500 Watt Max Power Vehicle Car Audio Speaker Subwoofer Bandpass Enclosure Box System With Plexiglass Front Window Panel (2 Pack) : Target
Alpine SBS-1041BP Type-S 10" Single Bandpass Subwoofer Enclosure at Crutchfield