Infinity Reference REF407F 4" Coaxial Speakers closeout Engineered with uncompromising precision and

Engineered with uncompromising precision and cutting-edge technology

Sub out low pass filter

4 & 5 channel amp crossovers adjusts to an X10 switch

crafted from high-quality paper

Equipped with a plethora of invaluable features

Infinity Reference REF407F 4" Coaxial Speakers closeout Engineered with uncompromising precision andA modern classic Just as they were throughout my 16 years as a Crutchfield Advisor, Infinity's Reference Series speakers remain a popular choice for upgrading from factory speakers. The REF407F 4" 2 way car speakers follow that Infinity heritage by offering the killer combo of high efficiency and superb sound. These Infinity speakers offer larger magnets than most factory speakers for bigger, better sound. Infinity's famous ingredients Reference