Dual 4 ohm 2"e; High-Temperature Voice Coil 1800 Watts MAX 900 Watts RMS Power Handling 88dB Sensitivity 32 Hz Resonant Frequency Polypropylene Cone Foam Surround 1.25 CuFt Sealed 2.0 CuFt Ported enclosure Mounting Depth: 5-3/8"e;