Equipped with two 4 inch woofers and a 1 inch tweeter, the Sony SS-CS8 2-Way 3-Driver Center Channel Speaker handles 145W of peak power. The speaker's woofers use a mica-reinforced diaphragm, the upper surface of which is fashioned to deliver supple and faithful sound quality, while the bottom layer is designed to provide a powerful bass response. The cabinet of the SS-CS8 is made from wood, which is designed to provide a natural resonance, and its bass reflex construction will give directionality to the low frequencies. The speaker's crossover network is mounted directly to the cabinet for vibration isolation, which is intended to assure low signal loss. Four rubber foot pads are included to isolate the speakers from your shelf, so as to reduce shelf vibration