The 165 KR2 is a 6.5 inch 2-way speaker kit from the K2 Power line of Focal speakers and is for those seeking the highest quality of music in their vehicle. Its 2 Ohm impedance gives it 3 dB efficiency which means it can produce a fuller, lifelike sound from any powered head unit or amplifier. It includes an aramid fiber inverted dome tweeter that delivers astonishingly broad and realistic tones. Very high power handling and extremely detailed sound is achieved through the legendary K2 composite sandwich cone, made by hand in the factory in France. Kit also includes a high precision separate crossover with adjustable tweeter level and midrange controls.