Focal ACX 690 Auditor Series 3 Way 6x9" Car Door Shelf Coaxial Speakers 80w RMSFocal Auditor ACX 690 6x9" 3 WAY COAXIAL KIT FOCAL TECHNOLOGIES ACX 690 is the only 3 way kit in the Auditor line. Measuring 6 1 2 x 9 1 4 (16. 4 23. 5cm) and with an elliptical profile, this coaxial kit provides a large sound diffusion surface while reducing the height of the product to deliver deep bass and is easy, quick and invisible to install in the vehicle. Like all the Auditor kits, it has a polypropylene cone and an adjustable, inverted dome