Ground Zero GZCS 100MB-C 59.95 EUR Available BUY Article Number: GZCS 100MB-C Share Information Reviews Model Car specific center speaker Diameter 100 mm / 4″ Power handling (RMS/max.) 40 / 60 Watts Impedance 4+4 ohms Efficiency 82 dB Frequency Response 100 Hz – 17 kHz