Rockford Fosgate P2D410 10 is Rockford Fosgate has always been known as “The PUNCH” and the P2 10" subwoofers certainly continue with the tradition. With their 4-Ohm Dual Voice Coils, they are an easy addition to almost any vehicle, the P2 subwoofers perform best in standard sealed and vented enclosures and their double-stacked magnets deliver REAL Bass!