Boss OHC52 5.25" 2-Way Die Cast Frame Speaker The diecast aluminum frames will make a high end statement in your system. The metallic electroplate injection cones provide durability and superior sound quality. POWER HANDLING, PEAK 350 Watts; MAGNET STRUCTURE, 25 OZ IMPEDANCE, 4 OHM; FREQUENCY RESPONSE, 85Hz20kHz; SPL 1 WATT/1 METER 93 dB CONE MATERIAL, ELECTROPLATE INJECTION VOICE COIL, 1-Inch ALUMINUM; TWEETER, 3/4-Inch POLYIMIDE DOME