18" Subwoofer, 1200 Watts AES, 4" Voice Coil8 Ohms, 97 dB Sensitivity
18" Subwoofer, 1500 Watts AES, 4.0" Voice Coil8 Ohms, 96dB Sensitivity
18" Subwoofer, 1500 Watts AES, 4.0" Voice Coil4 Ohms, 96dB Sensitivity
18" Subwoofer, 1500 Watts AES, 4" Voice Coil8 Ohms, 96 dB Sensitivity