Alpine S2-S80C Subwoofer Grilles 5 mm Reference Efficiency (no)

5 mm Reference Efficiency (no) 0

they are similar to a 3½

Front/Rear: 0 to +18 dB @ 45Hz (LP mode)

compatible with Pioneer's Smart Sync App for multimedia functionality voice control

Alpine introduces the E-Series

Alpine S2-S80C Subwoofer Grilles 5 mm Reference Efficiency (no)About the Alpine S2 S80C It's time for high res We're big fans of Alpine's push to give more drivers access to high res audio in the car. Using technology developed for their flagship F#1 Status Series, Alpine's Next Generation S Series car speakers provide access to all the wondrous detail of your favorite high resolution audio files at an appealing price. We recommend aftermarket power to drive these speakers, but even with factory power, their