[. . . ] 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. [. . . ] If the grille frame is protruding outward (it will not come off), push it all the way in. Attaching the grille frames is recommended even when not using the speakers in order to protect them from damage. The speakers can be enjoyed with the grille frames attached, but superior performance can be achieved by removing the grille frames. When removing the grille frame, take care not to bend or distort its shape excessively. *2 The lower duct on the rear is located slightly to the right of the center. Rated impedance Maximum input power Sensitivity Frequency response Dimensions (w/h/d) Mass Supplied accessories  Setting the speakers A B C Set the distance between the speakers to less than the distance between the listening position and each speaker. Precautions Before turning an amplifier or a source component on/off Set the volume of the amplifier to minimum. speaker placement is one of the most important factors in obtaining high-quality sound. Observe the following when placing your speakers to obtain full advantage of the speaker characteristics:  Set up the speakers on a hard, flat floor. Ώ Place the speakers near a hard wall with their rears more than 50 cm (20 in) away from the wall. Ώ Place the speakers so that the tweeters are at the same height as your ears when you are seated. Ώ Place the speakers at an equal distance from the listening position. Ώ If you cannot place the speakers wide enough apart, turn the speakers slightly outward. Likewise, if the speakers must be placed more than 2 meters (80 in) apart, turn them slightly inward for more effective stereo sound. [. . . ] In this case, reconnect the speaker cords after stripping the jacket to expose a fresh segment of cable core at each end. Ώ With spade plugs (more than 8 mm (11/32 in) in inner diameter, and less than 12 mm (1/2 in) in outer diameter) Connecting to the amplifier Before connecting, turn off the amplifier. [. . . ]