Ground Zero Hydrogen GZHK 165 6.5 inch midbass driver

Hydrogen GZHK 165 is a 6.5 inch (16.5 cm) midrange driver from Ground Zero with a pressed paper cone and 38 mm CCA voice coil. The version with ferrite magnet, GZ-design aluminum die-cast basket, and linearized drive is designed for 4 ohms. The power handling is 120 watts RMS and 180 watts maximum. The efficiency is 87 dB, and the frequency response is from 40 Hz to 5000 Hz. The diameter is 165 mm, the mounting depth is 69 mm, and the cutout diameter is 144 mm. The resonance frequency Fs is 49.4 Hz. Includes GZ-design hexagon grille, 1 pair per package. Features 6.5 inch (16.5 cm) midrange driver Pressed paper cone 38 mm CCA voice coil Ferrite magnet GZ-design aluminum die-cast basket Linearized drive 4 ohm version Includes GZ-design hexagon grille 1 pair per package Technical Specifications Diameter 165 mm Power handling RMS 120 watts Power handling max. 180 watts Impedance 4 ohms Efficiency 87 dB Frequency response 40 Hz – 5000 Hz Voice coil 38 mm CCA Cone pressed paper Cutout diameter 144 mm Mounting depth 69 mm Resonance frequency Fs 49.4 Hz