Patent ID: 8837763

Claim:
An inertially balanced loudspeaker system comprising: a rectilinear enclosure, enclosing a first acoustic volume and a second acoustic volume acoustically separate from the first acoustic volume, the enclosure having opposing first and second vertical sides and a horizontal side comprising either a top side or a bottom side; a single active low frequency transducer disposed in the horizontal side and acoustically coupled to the first acoustic volume; a high frequency active transducer acoustically coupled to the second acoustic volume; and a crossover configured to split an input signal into a low frequency portion and a high frequency portion, the low frequency portion coupled to the low frequency active transducer and the high frequency portion coupled to the high frequency active transducer; and a single pair of passive radiators acoustically coupled with the first acoustic volume and consisting of a first passive radiator disposed in the first vertical side and a second passive radiator disposed in the second vertical side, wherein momentum produced by oscillations of the first and second passive radiators is balanced to provide the inertially balanced loudspeaker system.