Alpine S2-S40 10cm 4" 2-Way 280 Watts Coaxial Car Speakers no Grill (PAIR)Alpine S2 S40 10cm 4" 2 Way 280 Watts Coaxial Car Speakers no Grill (PAIR) Newly redesigned and Hi Res Audio Certified, the Next Generation S Series S2 S40 10cm (4) Coaxial Speakers offer a new standard in entry level sound performance. We packed supreme capability into these speakers by using highly effective materials and proprietary design elements. The lightweight woofer cone, crafted from a combination of polypropylene, glass fiber, and mica