CEDIA 2015: MTX Audio Introduces MTX Thunder In-Ceiling/In-Wall Speakers October 19, 2015 | Home / October 19, 2015 rave-video / CEDIA 2015: MTX Audio Introduces MTX Thunder In-Ceiling/In-Wall Speakers CEDIA 2015: MTX Audio Introduces MTX Thunder In-Ceiling/In-Wall Speakers