Hertz Mille MPK 165.3 2-way high end loudspeaker system 16.5 cm, 220 W Kit 2-Way MP 25.3 + MP 165.3 + Mpcx 2.3 + Groove The MPK 165.3 car audio speaker system, has been developed to support a great low frequency response, even in cars with little room for a sub woofers. Thanks to the V Cone and boundary free surround sound technologies of the MP 165.3 woofer offer superior emulsion functions, and produces high sound pressure in compact size. The dedicated crossover Mpcx 2.3 has been developed to the large expansion the MP 165.3 woofer to use, providing a natural transition to MP 25.3 tweeter for maximum power handling – peak W 220 power handling – Continuous w 110 Impedance: & # X2126; 4 frequency response Hz 40 ÷ 22.5 K sensitivity db SPL 92 voice coil diameter mm (in.) 25 (1) woofer size mm (in.) 165 (6.5) tweeter Size mm (in.) 29 (1.14) woofer magnet high density flux ferrite core tweeter magnet neodymium woofer cone Pressed pulp cone with cotton fibers tweeter dome Tetolon crossover type 2 way passive crossover Crossover Cut Off 3.5 kHz