Pioneer TS-600M, 6-1/2" 4-way Coaxial Speakers, 320W Max Power | 11mm Tweeter and 11mm Super Tweeter and 1-5/8" Cone Midrange | Coaxial Speakers | (Sold in Pairs) - Walmart.com
MTX Terminator6 Terminator Series 6-1/2" 2-way car speakers at Crutchfield
Kenwood - 6-1/2" 2-Way Car Speaker - Black Car Speakers - Newegg.com
6.5" Speaker Box Enclosure 6 1/2" Car Speaker 6" Coaxial 5.125" Inside – AK Audio
Amazon.com: NVX® 6 1/2 inch Professional Grade True 100 watt RMS 2-Way Coaxial Car Speakers [V-Series] with Silk Dome Tweeters, Set of 2 [VSP65] : Electronics