Method and system for managing the low frequency content in a loudspeaker system

A loudspeaker system comprising:

• a plurality of loudspeaker devices, wherein each of the plurality of loudspeaker devices has a known response as a function of frequency under anechoic conditions, comprising a phase response;
• a sound processing unit configured to, during a set-up process of the loudspeaker system, automatically identify each of the plurality of loudspeaker devices from a list of supported loudspeakers from a database containing a frequency response (magnitude and phase response) obtained under anechoic conditions;
• providing means configured to from the database and for each of the plurality of loudspeaker devices, providing the corresponding phase response as a function of frequency obtained under anechoic conditions;
• for each of the plurality of loudspeaker devices, a filter device capable of providing phase compensation of an input signal for each of the plurality of loudspeaker devices and providing a filtered output signal either directly or via further signal processing means to a corresponding one of the plurality of loudspeaker devices;
• means for providing information about the phase compensation of the input signal for each of the plurality of loudspeaker devices that is required in order to obtain a resulting phase response of each of the plurality of loudspeaker devices under anechoic conditions plus the corresponding phase response of the corresponding filter is substantially identical for all of the plurality of loudspeaker devices;
• means for adjusting the phase response of each filter of the plurality of loudspeaker devices according to the information;
• wherein each filter of the plurality of loudspeaker devices comprise a first filter unit configured to compensate for differences in phase response between the plurality of loudspeaker devices under anechoic conditions and a second filter unit configured to introduce an additional individual phase compensation to compensate for differences in respective distances between the plurality of loudspeaker devices and a given listening point;
• and
• wherein said additional individual phase compensation is zero for one of the plurality of loudspeaker devices that is at a greatest distance from the given listening point, such that sound signals emitted by remaining ones of the plurality of loudspeaker devices are delayed corresponding to the difference between the greatest distance from the given listening point and respective distances between each of the remaining ones of the plurality of loudspeaker devices from the given listening point.