Sennheiser Electronic Gmbh & Co Kg

Axel Bergmeier

Axel Grell

Markus Kuhr

There is provided an earphone having at least one housing () and at least one electroacoustic transducer () having a first and a second surface (). The earphone further has a first volume () defined by the first surface () of the electroacoustic transducer () and by a first end () of the housing (), and a second volume () defined by the second surface () of the electroacoustic transducer () and by a second end () of the housing (). An opening () is provided between the first and second volumes (). A closing unit () serves to at least partially close the opening ().

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Wietze, Germany

Axel Bergmeier