4) New Kenwood KFC1664S 720W 6.5" 3-Way Sport Series Coaxial Car Audio Speakers New Kenwood KFC1664S 720W 6.5" 3-Way Sport Series Coaxial Car Audio Speakers (4-pack) Peak: 720 watts per 4-pack / 180 watts each RMS: 140 watts per 4-pack / 35 watts each Injection-Molded Polypropylene (IMPP) cone material Cloth speaker surround