KF940 Bent Horn Subwoofer

The KF940 portable horn-loaded subwoofer system, a.k.a.
"Super-Sub", loads two specially designed 12-inch woofers
with a horn with an exponentially expanding throat that is over 13
feet long. As an impedance matching device, the horn brings the 1w/1m
sensitivity of the system at 100 Hz to 113 dB SPL...