Description: The FSD-18 is a single 18inch subwoofer, which is mainly for working with the FD full range speakers. The size is of the FS-18B is very compact, and easy for installation. With 18inch long throw driver, the frequency can be at 30Hz, which is very powerful and punchy. It is suitable for Karaoke, Bars, Disco Club, Music room etc Technical Data: 1. Power: LF: 500W RMS 2. Peak Power: LF: 1000W 3. Drivers: LF: 18inch 4. Connection: 2 x 4- PIN, 1+ 1- INPUT 5. Sensitivity: 1W@1M >98dB 6. Max SPL: 110dB, peak@1m/w 7. Crossover Point: LF: 110HZ 8. Impedance: 8Ohm 9. Frequency Range: 35Hz to 300Khz 10. Color: Grey 11. N.W: 45KGS 12. Dimension: 690 x 560 x 600mm