Alpine R2-S652 6.5" R-Series Pro High-Resolution 2-Way Component Speaker Set, Pair - • 16.5cm Door Woofer (2pcs) / 4,3cm Hard-Dome Tweeter (2pcs) • Die-Cast Aluminum Baskets (Door Woofer) • Magnesium Hard-Dome Tweeters (Flush-Mount / On-Dash Mounting Options) • Glass-Fiber Reinforced Cone (Door Woofer) • Flexible PRO X-Over Networks • Included Speaker Grills Alpine R2-S65 6.5" R-Series High-Resolution Coaxial Speakers, Pair - • 16.5cm Door Woofer (2pcs) with Integrated Coax Hard-Dome Tweeters • Composite Baskets (Door Woofer) • Glass-Fiber Reinforced Cone (Door Woofer) • Integrated X-Over Networks • Included Speaker Grills