Martin Audio C6.8T Ceiling Loudspeaker, 6.5" LF, 0.8" TweeterMartin Audio C6. 8T 2 Way Ceiling Mount Loudspeaker, Vented Enclosure The compact C6. 8T 2 way flush mount loudspeaker delivers high performance, high intelligibility audio for a wide range of applications. It is designed for fixed installations in ceilings or walls and is especially effective in low ceiling applications. The unit is equipped with a 6. 5 inch bass driver that has a UL rated carbon fiber loaded polypropylene cone and a 0. 8 inch dome