Alpine S-Series S2-S40C - 4” 10cm 280 Watt 2 Way Component Dash Door SpeakersAlpine S Series S2 S40C 4 10cm 280 Watt 2 Way Component Dash Door Speakers Newly redesigned and Hi Res Audio Certified, the Next Generation S Series S2 S40C 10cm (4) Component 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