Boss SE553 Chaos  5.25" 3-Way Black Poly Injection Cone Speaker POWER HANDLING, PEAK 225 Watts MAGNET STRUCTURE, 30 OZ; IMPEDANCE, 4 OHM FREQUENCY RESPONSE, 100Hz18kHz; SPL 1 WATT/1 METER, 90 dB CONE MATERIAL, POLY INJECTION; VOICE COIL, 1-Inch ALUMINUM TWEETER, 1/2-Inch PIEZO; MIDRANGE, 1-Inch POLYIMIDE DOME