Dual horn loaded design I built one these #subwoofer boxes several years ago. It's a #Decware design ca… | Audio de automóviles, Diseño de altavoces, Diseño de caja
CARME Series Pair of 10" 600W Active PA DJ Subwoofer, Folded Horn Design – Sound Town
Transmission line / Horn bass reflex box for Power HX2 15 - YouTube