A body-sensible acoustic device which can be readily mounted on and detached from a seat of an automobile. A drive unit driven by acousto-electrical signals is mounted on a vibration transmitting member. A pair of clamping members are provided which are coupled to the vibration transmitting member in such a manner as to be slidable with respect thereto and swingable in a plane including the vibration transmitting member. Each clamping member has an arm for a holding a side frame provided in the seat body.

A sound reproduction unit comprises a central, head receiving portion and opposite first and second ends. The first and second ends have opposed front and back surfaces. A first acoustic transducer is mounted within the first end and a second acoustic transducer is mounted within the second end. First, second, third and fourth acoustically substantially transparent pathways are provided between the first transducer and the front surface of the first end, the first transducer and the back surface of the first end, the second transducer and the front surface of the second end, and between the second transducer and the back surface of the second end, respectively.

A vehicle seatback audio controller includes an entertainment interface that receives an entertainment audio signal from entertainment audio source, and a telematics interface that receives a telematics audio signal from a telematics audio source. The controller has an output that provides either the telematics audio signal to a seatback speaker when the telematics audio source is active or the entertainment audio signal to the seatback speaker when the telematics audio source is inactive. The controller may include an accelerometer or a microphone that generates a vibration signal and/or a noise signal. A level detector may receive the vibration signal and/or a noise signal, and adjust a level of the telematics audio signal to the seatback speaker as a function of the vibration signal and/or a noise signal.