Motor car e.g. cabriolet has speaker with membrane that is adjacently set with resonance portion formed by cavity of reinforcing ring with several hollow elements for forming self-contained structure having torus topology

摘要

The motor car (1) has a reinforcing ring (7) with several hollow elements for forming a self-contained structure having torus topology, that are arranged at an angle of 60[deg] corresponding to a vehicle longitudinal axis. An audio device (2) is arranged for reproducing an audio signal and several speakers (4) are equipped for outputting the audio signal. The speaker is provided with a membrane. The resonance portion is set adjacently to the membrane and is formed by a cavity (12) of the reinforcing ring. The resonance portion is designed as the helmet timber resonator.