This work is intended to explore in more detail the series crossover network topology, presenting more general formulae and showing the advantages and disadvantages with respect to a parallel solution. It is possible to arrange loudspeakers in such a way that only one lobe emits from the array. This lobe can have an arbitrary beam width and to a certain extent an arbitrary beam shape. Because of this control over the beam, narrow beam widths can be made where wave fronts travel coherently 200 meters or more. This eliminates the coloration-effects due to side or grating lobes.
Most parameters are variable, and the system is designed to enable real-time implementation.
A small scale listening test has revealed that even when operating on high-end audio equipment and employing a well damped listening room, improvements in reproduction quality can be achieved. Also in a listening position far away from the optimal and corrected one, some improvement is observed. The experiments were carried out in an anechoic chamber. This is typically illustrated by a reduction in the level of fluctuations in the emitted acoustic pressure spectra. These fluctuations are normally associated with interference between the sound emitted by the front surface of the speaker and by that emitted from the back.