3in. subwoofer with the increased diffusor step 1in. cone mid-frequency loudspeaker with a diffusor made of polypropylene 3/4in. Tweeter Magnet weight 10 ounces 3/4in. aluminum sound coil, designed for a high-temperature operation mode. Nominal power RMS 45 W / Maximum power 120 W Frequency range: 90 Hz - 20 kHz Sensitivity: 90 dB, 1 W/m Resistance: 4 Ohm High-quality casing made of ABS Speakers are protected with a grate. Comfortable outlets for quick connection. Dimensions: 9.7 cm (height) x 18.3 cm (width) x 11.3 cm (depth)