The Infinity Primus 603CF is a 6.5 inch 2-way component split speaker system engineered for improved in-car clarity and imaging. It uses an edge-driven tweeter and a Plus One polypropylene woofer with a cooling vented basket frame to maintain output and reliability under prolonged use.

The component configuration provides flexible installation of separate midwoofers and tweeters for better staging. The design is compatible with factory radios, aftermarket head units, and external amplifiers while the low-impedance voice coil and true 4-ohm architecture allow the speakers to draw more power safely from typical car audio sources.