C1-400x
4-inch (100 mm) Coaxial Speaker System

C1-525x
5.25-inch (130 mm) Coaxial Speaker System

C1-570x
5 x 7 / 6 x 8-inch (125 x 180 mm) Coaxial Speaker System

C1-650x
6.5-inch (165 mm) Coaxial Speaker System