PRO PA horn-loaded subwoofer, 2 x 18" woofer, 1600 W RMS, 4 ohms
PSSO SUB-2180 Subwoofer

Powerful hybrid-subwoofer,
unifying the advantages of bass horn and bass reflex technology. The hybrid construction enables the PSSO SUBs to perform at a higher level; higher than comparable bass reflex systems while simultaneously demonstrating better impulse response than pure horn constructs.