Boss SE60CK Chaos 6.5" Component Speaker System POWER HANDLING, PEAK 350 Watts MAGNET STRUCTURE, 20 OZ; IMPEDANCE, 4 OHM FREQUENCY RESPONSE, 60Hz20kHz; SPL 1 WATT/1 METER, 92 dB CONE MATERIAL, POLY INJECTION; VOICE COIL, 1-Inch ALUMINUM TWEETER, 1-Inch MYLAR DOME; MIDRANGE, -N/A-