Ground Zero GZCS 100MB-S 128.42 EUR Available BUY Article Number: GZCS 100MB-S Share Information Reviews Model Car specific surround speaker Diameter 100 mm / 4″ Power handling (RMS/max.) 40 / 60 Watts Impedance 4 Ohms Efficiency 82 dB Frequency Response 100 Hz – 17 kHz