Description: FSD-218 is a designed specially for medium to small music . It is composed of two 18 inch woofers with flat aluminum 4 inch voice coil 100mm,and with magnet 220mm.The cabinet is designed as a reflex system that it can perform very strong and deep bass with very high efficiency. This system is suitable concert, Touring, Disco Club etc Technical Data: 1. Power: LF: 1000W RMS 2. Peak Power: LF: 2000W 3. Drivers: LF: 2 x 18inch 4. Connection: 2 x 4- PIN, 1+ 1- INPUT 5. Sensitivity: 1W@1M >98dB 6. Max SPL: 113dB, peak@1m/w 7. Crossover Point: LF: 80Hz to 200HZ 8. Impedance: 4Ohm 9. Frequency Range: 25Hz to 200Hz 10. Color: Grey 11. N.W: 76KGS 12. Dimension: 560 x 1066 x 740mm