Patent ID: 9241206
Filing Date: 2016-01-19
CPC Classification: H04R

Claim Text:
1. A loudspeaker enclosure housing a drive unit, the enclosure being defined by one or more panels, wherein the drive unit comprises a coil, a magnet and a diaphragm, the magnet is decoupled from the one or more panels of the loudspeaker enclosure, and the diaphragm is arranged to move, and thereby generate sound which is emitted forwardly of the diaphragm, on application of an appropriate electrical signal to the coil, which also causes a complementary movement of the magnet, wherein the diaphragm is arranged such that when moved by such an electrical signal it acts against a first air volume within the enclosure, the magnet is arranged such that when moved by such an electrical signal a surface coupled to the magnet acts against a second air volume, different from the first air volume, the second air volume extending rearwardly of the magnet and the surface coupled to the magnet is decoupled from the one or more panels of the loudspeaker enclosure.