Model no.: GS-4070System: 4" 2-way Coaxial car speakers
Woofer: Injection-molded polypropylene cone
Magnet: Ferrite 5.4 Oz
Voice coil:25 mm KSV
Surround edge: Rubber
Fre.Res.:80-22K Hz
Sensitivity:89dB/W/m
Impedance: 4 ohms
RMS power: 30 W