Matrix Audio RSX620 6.5 in. 2-Way Speakers - Pair High Quality Poly Mica Composite Cone 1 Mylar Dome Tweeter 1 Hi-Temperature Voice Coil 150 Watts Max / 75 Watts Rms 10 Oz. Magnet / 20 Oz. Magnet Structure Efficiency: 88Db (1 Watt / 1 Meter) Frequency Response: 75Hz - 20Khz