A sound reproduction system provided for in-vehicle use includes: a music signal source a first group of a first transducer, a second transducer, a third transducer and a fourth transducer connected to the music signal source a signal processor shifting the phase of first sound signals output from the music signal source and a second group of a first transducer, a second transducer, a third transducer and a fourth transducers connected to the signal processor.
