Patent ID: 7558395

Claim:
A loudspeaker comprising a housing provided with a magnet unit that generates a magnetic field and a flexible membrane which is mounted in a frame and which is provided with an electrical conductor arranged in a pattern on a central part of the membrane, which membrane is positioned in the magnetic field in such a manner that a force is exerted when current is fed through the conductor pattern on the membrane, which force is capable of setting the membrane in motion so as to produce sound, said conductor pattern being provided on the membrane in at least two spaced-apart vibrating regions, the loudspeaker being provided with at least two sound channels each extending between one of said electrical conductor patterns in each of the vibrating regions and the outer side of the housing, wherein the central axes of the at least two sound channels, which are located between the outer wall and the inner wall of each channel, incline towards each other over a particular distance from the membrane.