Patent ID: 6516076
Filing Date: 2003-02-04
Classification: G10K

Abstract:
A modular horn loudspeaker adapted for use in corrosive or harsh environments, comprising:a driver including a diaphragm driven by a voice coil, said voice coil being suspended in a magnetic gap, said driver further including a magnet disposed proximate said magnetic gap to provide magnetic flux across said magnetic gap such that when an alternating current signal is passed through said voice coil, said diaphragm is displaced in relation to said magnetic gap, thereby creating an acoustic pressure wave in a first region proximate said diaphragm; a cup-shaped sound chamber having an interior surface and an exterior surface and carrying a phase plug on said interior surface and surrounded by a plurality of diaphragm exits being in fluid communication through said sound chamber, said sound chamber further including an exterior surface with a radial array of debossed troughs defining a plurality of horn throat segment walls; each horn throat segment wall originating in a respective diaphragm exit; said sound chamber interior surface being disposed proximate said diaphragm; a cup-shaped cover coaxially fitted over the sound chamber and, together with said sound chamber, defining a boundary for each said horn throat segment, whereby said acoustic pressure wave propagates from said first region proximate said diaphragm, through said plurality of diaphragm exits and through said plurality of horn throat segments; and a housing adapted to coaxially receive said sound chamber and said cover and defining an open horn mouth, whereby said acoustic pressure wave propagates from said plurality of horn throat segments and out through said open horn mouth.