With its high-grade design and tight bass response, this subwoofer delivers plenty of clarity and depth to your car's audio system. Upgrade your car's audio system today with the powerful and versatile XD Series subwoofer! 900W Max 450W RMS Dual 4 ohm voice coils stamped Steel basket carbon fiber non-pressed paper cone Multi-layer foam Surround woven tinsel leads chrome push terminals 120 oz. Magnet 2 1/2" 4-layer voice coil SPL dB 92 mounting depth: 5 1/2".