SP650.1 Two-way Ceiling-Mount Speakers Two-way speaker systems normally incorporate a tweeter, a woofer and a crossover network. They are called "full-range" systems because they play the full spectrum of musical frequencies. These speakers provide a swivel tweeter (for easier placement and directing the high frequencies) with the latest magnetic-design incorporating a rare-earth Neodymium magnet and a moisture resistant dome encased in FerroFluid(tm) which provides superb power handling. The woofers in are made of moisture-resistant Polymica cones for ideal stiffness, damping and bass response. Both the tweeter and woofer use a seamless dividing network resulting in clear, lifelike sound. Russound's SP650.1 uses a rigid one-piece frame with six flanges for secure mounting on uneven walls as well as providing years of perfect fit and resonant-free sound. Frames and grilles have been finished in a decorator-white finish. A spray-shield is included if you choose to paint them to match your decorator colors. These affordable, quality, wall-mount speakers provide an excellent combination of fidelity and value and can be used in applications ranging from primary speakers in a surround sound or home theater system to excellent background stereo speakers for houses, offices, restaurants, etc. SP650.1 Technical Information: * Frequency Response: 58-21,000Hz * Tweeter: 1/2" (19mm) Neodymium silk dome, FerroFluid(tm) cooled, swivel, moisture resistant * Woofer: 6.5" (165mm) Polymica, moisture resistant, foam surround * Crossover: 12 dB/octave - tweeter, 12 dB/octave - woofer * Sensitivity: 90 dB/1W/1m * Min/Max Power: 10/80 W/ch RMS continuous * Nominal Impedance: 8 Ohm * Grille Type: Fine mesh grille, paintable (steel) * Frame Type: ABS-type plastic, paintable * Dimensions: 8 2/3"W x 12"H x 3"D (220 x 229 x 79mm) * Mounting Hole: 7 3/8"W x 10 3/4"H (187 x 273mm) * Mounting System: 6 self-mounting, self-contained clamps * Rough-In Template, optional: ST-2.6