NESA TS-694 6"X9" 4-Way Full Range Speakers 400W Max 500W Max Power Handling; 200W RMS Power Handling 92dB System Efficiency; 4-ohm System Impedance 2.5 Mylar Midrange; 0.8 Mylar Tweeter Speaker Grill Included 92dB System Efficiency; 4-ohm System Impedance