User manual YAMAHA SM12III

[. . . ] Never allow your amplifier to be driven into "clipping". When using an amplifier with a rated output power higher than the nominal input power of the speakers, care should be taken never to exceed the speakers' maximum input. [. . . ] Do not attempt to clean the cabinets with chemical solvents as this might damage the finish. To prevent the cabinets from warping or discoloring, do not place the speakers where it will be exposed to direct sunlight or excessive humidity. Do not place the speakers where they are liable to be knocked over or struck by falling objects. Stable placement will also ensure better sound performance. Do not place the speakers on the same shelf or rack as the turntable. The vibration of the speakers might cause the feedback. Secure placement or installation is the owner's responsibility. Loosen Tighten Black(­) Red (+) Red line Speaker (R) Red line Speaker (L) Black line Speaker output terminals of the amplifier Amplifier Note Do not let the bare speaker wires touch each other as this could damage the speakers or the amplifier, or both of them. PLACING THE SPEAKERS Place the speakers on a sturdy vibration-free surface. If you cannot obtain good bass quality when the speakers are placed directly on the floor, insert a block etc. Better stereo images will be obtained when the speakers are slightly angled in towards the listeners. SPECIFICATIONS <NS-55> Type . . . . . . . . . . . . . . . . . . . . . . 3-way 4-speaker bass-refrex speaker system Speaker Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 cm cone woofer x 2 10 cm cone mid-range 3 cm dome tweeter Nominal Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 ohms Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Hz ­ 20 kHz (­10 dB) Nominal Input Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70W Maximum Input Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250W Sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 dB/W·m Dimensions (WxHxD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264 x 886 x 316 mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (10-3/8" x 34-7/8" x 12-7/16") Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13. 6 kg (29 lbs. 15 oz. ) Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Speaker cable (4m) x 1 <SM12III> Type . . . . . . . . . . . . . . . . . . . . . . . 2-way 3-speaker bass-reflex speaker system Speaker Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 cm cone woofer x 2 3 cm dome tweeter Nominal Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 ohms Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Hz ­ 20 kHz (­10 dB) Nominal Input Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60W Maximum Input Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220W Sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 dB/W·m Dimensions (WxHxD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230 x 780 x 275 mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (9-1/16" x 30-11/16" x 10-13/16") Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10. 8 kg (23 lbs. 13 oz. ) Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Speaker cable (4m) x 1 * Specifications subject to change without notice due to product improvements. * Care should be taken not to exceed the input power values noted above. Note Bacause these speakers are not a magnetically shielded type, there may be some influence on a TV picture depending on the type of TV or the placement of the speakers. [. . . ] * Care should be taken not to exceed the input power values noted above. Note Bacause these speakers are not a magnetically shielded type, there may be some influence on a TV picture depending on the type of TV or the placement of the speakers. In such a case, place the speakers apart from the TV. REMOVING THE FRONT COVER The front cover is fixed to the cabinet at six points, and can be removed if desired. [. . . ]