Newly redesigned and Hi-Res Audio Certified to reproduce up to 40kHz frequency response, the Next-Generation S-Series S2-S40 5” 2-way Coaxial Speakers offer a new standard in entry-level sound performance. This new benchmark in sound quality elevates the Next-Gen S-Series speakers, resulting in a more accurate and natural sound at an entry-level price point. | Alpine | | S-Series 4" Hi-Resolution Coaxial Car Speakers with Glass Fiber Reinforced Cone (Pair | Black | Best Buy