The Infinity Primus 1200 is a 12-inch passive subwoofer rated at 300W RMS with a 4-ohm nominal impedance. It provides controlled low-frequency output for custom car audio installations.

This subwoofer requires an external amplifier and is intended for installation in custom sealed or ported enclosures. It is suitable for vehicles that accommodate a 12-inch sub and for installers matching amplifier power and enclosure to the desired bass response.