POWER ACOUSTIK PR-694C PR Series Full Range Speakers (6" x 9") 280W ; 40-oz magnet ; Imp: 4ohm ; Freq resp: 50 Hz20 kHz ; 1.5" voice coil ; SPL: 91 dB ; Injection-molded cone ; Rubber butyl surround ; Polymide mid-range; Super dome tweeter ; Piezo tweeter ; 1-year warranty "PR Series Full Range Speakers (6"" x 9"")"