MTH-2/64BT is an active, two-way, horn-loaded, 60º x 40° constant-directivity system with a trapezoidal enclosure, utilising two high-power mid bass drivers in the mid bass frequency band and two high-power compression drivers in the high-frequency band. Both the mid bass and high-frequency horns may be rotated i n the enclosure. This configuration results in remarkable high acoustic output from a small enclosure.