[. . . ] this product has been manufactured by or on behalf of Sony Corporation , 1-7-1 Konan Minato-ku Tokyo , 108-0075 Japan. Inquiries related to product compliance based on European Union legislation shall be addressed to the authorized representative, Sony Deutschland GmbH, Hedelfinger Strasse 61, 70327 Stuttgart, Germany. [. . . ] specifications Speaker system Speaker unit 2-way 5-driver speaker system , Bass reflex Woofer: 130 mm (5. 25 in), cone type (2) Tweeter: Main tweeter, 25 mm (1 in), dome type (1) Assist tweeter, 19 mm (0. 17 kg (37 lb 8 oz) Cleaning cloth (1) Rated impedance Maximum input power Sensitivity Frequency response Dimensions (w/h/d) Mass Supplied accessories Design and specifications are subject to change without notice. ΍ Setting the speaker Speaker placement is one of the most important factors in obtaining high-quality sound. Observe the following when placing your speaker to obtain full advantage of the speaker characteristics:  Set up the speaker on a hard, flat place. Ώ Depending on the rack type, you can set the speaker into the rack (-). Precautions Before turning a receiver or a source component on/off Set the volume of the receiver to minimum. If the bass cannot be heard or the phonic positions of instruments are indefinite Make sure to connect the speaker cords by matching +/– to the appropriate speaker terminals. Do not place the speaker in the following locations:  In places subject to high temperature or direct sunlight  In places subject to excessive dust and dirt  In places subject to high humidity  Near source components (CD players, record players, etc.  Nearby devices that can be influenced by magnetism , such as a digital video recorder. Therefore, if you use the speaker near CRTbased televisions, color shading occurs on the television screen. If color shading occurs, turn off the television, then turn it on again after 15 or 30 minutes. If the color shading persists, increase the distance between the speaker and television. Cleaning of the enclosure  Do not use any type of neutral detergent, benzene, or alcohol because they may damage the surface finish of the enclosure. [. . . ] Periodically checking the tightness of the binding posts is recommended to prevent them from becoming loose as time passes. About aging The speaker takes some time to provide their best performance. [. . . ]