The MP 165P.3 car audio woofers electro-acoustic parameters have been forged to give it the pure and solid sound of an authentic mid-bass, designed for high dynamic systems. The voice coil with a generous 14 mm height, has a nominal 3 Ω impedance in addition to an increased power handling. These features provide the ability to maximally exploit the power of the Hertz HCP and HDP amplifiers as well as all the 2 Ω stable electronics. The ferrite 95 mm diameter magnet enables a +/-4.5 mm voice coil linear excursion, ensuring utmost control at all times. The Boundary Free Surround moves a bigger amount of air, and the V-cone® profile improves the offaxis dispersion, the real in-car listening condition. The sophisticated aluminium alloy basket neutralizes the undesired vibrations. Features: 1.PURE COPPER VOICE COIL: wound on a Polyamide former for high power handling combined with very low intermodulation distortion of vocals.2.EXPONENTIAL V-CONE® PROFILE: geometrically optimized for utmost linearity and dispersion in the mid frequency range. (Logo VCone)3.“BOUNDARY FREE” RUBBER SURROUND: for improved efficiency and wider mid-bass frequency. (Logo Boundary Free)4.HIGH DENSITY FLUX FERRITE MAGNET: combined with very low carbon content iron plates, for low distortion at high power levels.5.BASKET: low mounting depth, acoustically transparent aluminium alloy basket with elegant diamond cutting and featuring the aluminium Hertz logo. Component Woofer Size 165 mm (6.5) in. Power Handling - Continuous 100W Power Handling - Peak 200W Impedance 3 Ohm Voice Coil Ø 25 (1) Frequency Response 45 ÷ 4,5k Hz Magnet size D x d x h 95 x 45 x 17 mm (3.74 x 1.77 x 0.67) in. Weight of one speaker 1.2 kg (2.65) lbs Magnet High density flux ferrite Cone Pressed-pulp cone with cotton fibers Xmech ±7.5 mm (0.3) in.