Diamond Audio D673a 5x7 / 6x8 Convertible Component Speaker System D673A - Diamond Audio 5"x 7" / 6"x 8" Convertible Speaker System with Aluminum Tweeters Mounting Diameter: 6.92" x 4.95" Hole Diameter: 8.03" x 4.98" Mounting Depth: 2.25" Magnet Diameter: 3.07"