Dual"s TS5768 5" X 7" / 6" X 8" 150 Watt 3-Way Illuminite Speakers offer high end sound at an affordable price. These speakers are meant to play loud. Features include 150 Watts peak - 50 Watts RMS, 4 Ohms nominal impedance, brushed metalized silver polypropylene cone, 1/2" Mylar dome Tweeter, 63Hz - 20kHz frequency response and 89dB sensitivity.