Iridium GZIW 165 is a 6.5 inch (16.5 cm) Subwoofer from Ground Zero with Klippel optimized construction and HQPP membrane with 3D structure.
Equipped with a 38 mm copper voice coil, durable rubber surround, polycot centering, resonance-optimized steel basket, and pressure contact connection.
The impedance is 4 Ohms, Re 3.6 Ohms, the resonance frequency is 41 Hz; Qms 10.70, Qes 0.43, and Qts 0.41.
Vas 9.1 liters, Le 1.59 mH, Mms 40.4 g, and BL 9.46.
The linear excursion Xmax is 10 mm, the efficiency is 85.5 dB (1 W/1 m).
The RMS power handling is 100 Watts, the recommended amplifier power is 60 to 150 Watts.
Dimensions: outer diameter 168 mm, cutout diameter 147 mm, mounting depth 79 mm.
Features 6.5 inch (16.5 cm) Subwoofer Klippel optimized 38 mm copper voice coil Durable rubber surround HQPP membrane with 3D structure Polycot centering Resonance-optimized steel basket Pressure contact connection Technical Specifications Impedance 4 Ohms Re 3.6 Ohms Fs 41 Hz Qms 10.70 Qes 0.43 Qts 0.41 Vas 9.1 liters Le 1.59 mH Mms 40.4 g BL 9.46 Xmax 10 mm Efficiency 85.5 dB (1 W/1 m) RMS power handling 100 Watts Recommended amplifier power 60–150 Watts Outer diameter 168 mm Cutout diameter 147 mm Mounting depth 79 mm