Boss CH1623 Chaos Series 6.5-Inch 3-Way Speakers (Pair) 300 Watts Peak Power Handling; Impedance, 4 OHM Frequency Response, 100Hz18kHz; Spl 1 Watt / 1 Meter, 90 dB Cone Material, POLY INJECTION; Voice Coil, 1-Inch ALUMINUM Twetter, 1/2-Inch PIEZO; Midrange, 1-Inch POLYIMIDE Dome Mounting Depth, 2-3/16-Inch