Abstract: A loudspeaker system includes a housing, a coaxial loudspeaker driver, and illuminating elements wherein at least one of the illuminating elements, for example a front light diffuser, is sufficiently robust to carry the weight of the coaxial loudspeaker driver. The entire structure is constructed in such a way to prevent water or air leakages. The coaxial loudspeaker driver has a single magnetic assembly with a first axial annular air gap for the low-frequency moving coil and a second annular air gap for the high-frequency moving coil. The loudspeaker driver is supported and maintained in position within the housing by at least one illuminating element. The housing is provided with a water proof light and sound-transmitting front grille and a water proof light and sound transmitting rear cap. The loudspeaker driver and illuminating elements are dimensioned to fit tightly within the housing.

Abstract: A loudspeaker system includes a housing, a coaxial loudspeaker driver, and illuminating elements wherein at least one of the illuminating elements, for example a front light diffuser, is sufficiently robust to carry the weight of the coaxial loudspeaker driver. The entire structure is constructed in such a way to prevent water or air leakages. The coaxial loudspeaker driver has a single magnetic assembly with a first axial annular air gap for the low-frequency moving coil and a second annular air gap for the high-frequency moving coil. The loudspeaker driver is supported and maintained in position within the housing by at least one illuminating element. The housing is provided with a water proof light and sound-transmitting front grille and a water proof light and sound transmitting rear cap. The loudspeaker driver and illuminating elements are dimensioned to fit tightly within the housing.

Abstract: A method for controlling a loudspeaker having an electromechanical force transducer and a diaphragm by: Providing a non-linear electromechanical model configured to apply one or more desired conditions to a loudspeaker input digital audio signal, i.e. to an analogic input signal converted in a digital input signal; Providing an inverse non-linear electromechanical model of the transducer configured to receive a signal processed by the non-linear model and to linearize at least one mechanical and/or electrical and/or electromechanical non-linearity of the transducer; Converting the digital output signal of the electromechanical model into an analog signal for the transducer, So that the output signal comprises an input voltage signal for the transducer and at least the second non-linear model is a digital wave filter (hereinafter referred to as Wave Digital Filters, WDF) to provide a directly computable function in the discrete-time domain to get the input voltage signal for the transducer.