Cadence Marine Subwoofer SQW10 Specifications Size: 10" RMS/Peak Power: 300/600 Watts Frequency Response: 40Hz - 2kHz Spl @ 1w/1m: 94db System Impedance: 4 ohms Mounting Depth: 4.65" Features FULLY MARINIZED AGAINST SALT & FRESH WATER CONDITION COMPLETELY WATER/RUST PROOF 300 WATTS RMS SYSTEM POWER/600 WATTS MAX POWER POLYPROPYLENE MICA INJECTED CONE WITH SANTOPRENE SURROUND 2” HIGH TEMP VOICE COIL 40oz MAGNET SEALING GASKETS, GRILLS, & INSTALLATION HARDWARE