Infinity Reference REF407F 4" Coaxial Speakers 1501-2000 Inputs and turn-on: Speaker-level inputs

Inputs and turn-on: Speaker-level inputs and signal-sensing turn-on support factory radios without an aftermarket head unit

detailed high-frequency response with minimal distortion at high volume

3C provides a full three-way front-stage solution with strong midrange clarity

Fusing uses external fuse

allowing solid output with a capable amplifier while maintaining control of the woofer cone

Infinity Reference REF407F 4" Coaxial Speakers 1501-2000 Inputs and turn-on: Speaker-level inputsInfinity Reference REF407F 4" 2 way car speakers are a high efficiency upgrade designed to fit behind factory grilles or panels in most applications, delivering punchy midbass and smooth highs. They perform best when powered by an external amplifier but remain compatible with factory or aftermarket stereos. Plus One+ polypropylene woofer cone: Oversized cone with a hi roll rubber surround moves more air for louder, more impactful bass from a compact