Boss SE322 CHAOS 3.5-Inch 140 Watt 2-Way Speaker 3.5" 2-Way Speaker 140W Peak Power Handling 4 OHM Impedance 100Hz - 18KHz Frequency Response Poly Injection Cone Material POWER HANDLING, PEAK 140 Watts MAGNET STRUCTURE, 2O OZ; IMPEDANCE, 4 OHM FREQUENCY RESPONSE, 100Hz18kHz; SPL 1 WATT/1 METER, 88 dB CONE MATERIAL, POLY INJECTION; VOICE COIL, 1-Inch ALUMINUM TWEETER, 1-Inch POLYIMIDE DOME; MIDRANGE, N/A