Polypropylene cone for perfect balance of stiffness, mass, and self-damping
Butyl rubber surround ensures high excursion and long term durability
Stamped steel frame keeps components in perfect alignment
Optimized motor features high-energy ceramic ferrite magnet, vented pole piece
GRS 6PR-8 6-1/2" polypropylene cone woofers with butyl rubber surrounds are great replacement speakers, but also provide excellent performance in new projects.