The Alpine Next Generation S-Series S2-S69C 6x9 Component Speakers offer a new standard in entry-level sound performance. These speakers are Hi-Res Audio Certified and able to reproduce up to 40kHz frequency response. Experience a fuller and richer sound with the unique 3" midrange speakers with built-in 3/4" tweeters. Designed to capture the midrange frequencies present in vocals and acoustic instruments, this added midrange speaker enhances your music like never before. High Amplitude Multi-Roll (HAMR) sound technology is integrated into the speaker design which allows for maximum cone movement, delivering powerful and accurate bass notes.