[. . . ] Configuration of the rubber stoppers may be different from the figure, such as being 2 sheets instead of 1 sheet, but the total number will be same. The front grilles are not designed to be removed so do not attempt to remove them forcibly, as this will damage them. [. . . ] The front grilles are not designed to be removed so do not attempt to remove them forcibly, as this will damage them. ) and playback is very loud, the subwoofer's feet may damage the flooring. We recommend using the supplied rubber stoppers to achieve the best possible sound from your speakers. The rubber stoppers prevent the speakers from moving, providing a more stable platform. Use thick stoppers for the center speaker, and thin stoppers for the other speakers. The Home Theater means that you can enjoy surround sound with a real sense of movement in your own home -- just like being in a movie theater or concert hall. Front left and right speakers (SKF-038) They should be positioned facing the listener at about ear level, and equally spaced from the TV. Angle them inward slightly so as to create a triangle, with the listener at the apex. Center speaker (SKC-038) Position it close to your TV (preferably on top) facing forward at about ear level, or at the same height as the front left and right speakers. Type Input sensitivity/impedance Maximum input power Output sound pressure level Frequency response Cabinet capacity Dimensions (W × H × D) Full Range Bass-reflex 6 120 W 82 dB/W/m 80 Hz to 20 kHz 1. Surround left and right speakers (SKR-038) Position them at the sides of the listener, or slightly behind, about 60 to 100 cm (2 to 3 feet) above ear level. Weight Drivers unit Terminal Type Input sensitivity/impedance Maximum input power Output sound pressure level Frequency response Cabinet capacity Dimensions (W × H × D) Full Range Bass-reflex 6 120 W 81 dB/W/m 80 Hz to 20 kHz 1. [. . . ] Connect positive (+) terminals to only positive (+) terminals, and negative (­) terminals to only negative (­) terminals. If the speakers are wired incorrectly, the sound will be out of phase and will sound unnatural. [. . . ]