Patent ID: 6081602
Filing Date: 2000-06-27
Classification: H04R

Abstract:
An arrayable at least two way loudspeaker system having an operating frequency range including a high frequency range and a low frequency range, and which radiates acoustic energy from a focal point in a polar radiation pattern having amplitude and phase, said loudspeaker system comprisinga cabinet having top wall, a bottom wall, and a front baffle board,a low frequency cone driver mounted to the front baffle board of said cabinet,a horn-loaded high frequency compression driver, said horn-loaded high frequency driver including a horn having a mouth end and a throat end, the mouth end of said horn being mounted to the front baffle board of said cabinet adjacent said low frequency driver, anda signal conditioning circuit including a audio signal input, a high frequency channel connected to said high frequency compression driver, a low frequency channel connected to said low frequency cone driver, and a cross-over circuit for dividing an audio signal applied to said audio signal input between said high frequency channel and low frequency channel,said signal conditioning circuit further including amplitude equalization circuit means for equalizing the amplitude of the polar pattern of the loudspeaker system over the operating frequency range of the loudspeaker system, and phase correction circuit means for correcting the phase of said polar pattern, andthe horn of said horn-loaded high frequency driver and said signal conditioning circuit being designed to operate in cooperation with each other such that the focal point of the loudspeaker system is a frequency independent focal point that remains substantially fixed over substantially the entire operating frequency range of the loudspeaker system and such that acoustic energy from the at least two drivers of the loudspeaker system radiates in a polar pattern from said fixed frequency independent focal point.