Ground Zero GZPK 16SQ-C

ModelHigh-quality SQ midwoofer Diameter165 mm / 6.5? Power handling (RMS/max.)140 / 200 Watts Impedance4 Ohms Efficiency89 dB Frequency Response40 Hz ? 5000 Hz Voice coil38 mm / 1.5? ConeAluminum-ceramics Mounting Ø144 mm / 5.67? Mounting depth70 mm / 2.76? Resonance frequency (Fs)38 Hz