Wooden enclosure to be installed for the Sonance Cinema 12-500 In-Wall Subwoofer. Sonance Cinema Series In-Wall Subwoofer enclosures are constructed from a combination of ½” and 1” MDF for superior isolation of bass and extruded aluminium bracing for minimal obstruction of airflow inside the enclosure. Mass damping of front and back walls of each enclosure and long strand fibreglass internal damping for standing wave dissipation is also incorporated. In addition, a floating enclosure design minimizes vibration transfer to adjoining rooms. Both enclosures fit in a standard 2 x 4 stud bay and a blank pre-construction plate is included for easy installation.