RCF L18P300 18-Inch Car and DJ Woofer RCF L18P300 18" CAR and DJ Woofer 4-inch Inside/outside copper voice coil 2000 Watt continuous program power handling 97 dB Sensitivity 35 Hz - 1 kHz Frequency range Forced air ventilation & 15 mm top plate for minimum power compression 4-inch Inside/outside copper voice coil 2000 Watt continuous program power handling 97 dB Sensitivity 35 Hz - 1 kHz Frequency range Forced air ventilation & 15 mm top plate for minimum power compression