12 Single Voice Coil 4 ohm Component Subwoofer. 1,500W Max / 400W RMS. High heat resistance voice coil. Deeper and Louder Bass. High rigidity IMPPT composite seamless cone with honeycomb and a large magnet. High Reliability and Tough Body Design. Seamless large cone and magnet cover like the TS-W312S4/D4. Push terminals for easier installation. 22 Hz to 1.6 kHz. Sensitivity (1W / 1m). All our products are 100% original geniune authentic products! Please allow us to achieve our goal. Thank you for watching.