Unit features exponentially-flared projectors which eliminate phase cancellation, control low-frequency roll off and offers maximum results in professionally-applied voice, music and signaling systems. It can be surface or flange-mounted and is ideal for use as a mid-range component for two and three-way, high-fidelity loudspeaker systems. Weather-resistant construction is suitable for permanent or portable installation in church, recreation/sport centers, mass transit terminals, industrial, com