This was an interesting project. This room was 4 foundation walls, below grade, and partially excavated. It was unusable and inaccessible space. A door was cored into the concrete wall, radiant heat installed, and concrete theater risers poured. The walls were furred out, and we used double drywall, with a glue like product to join the drywall layers to help with the acoustics in this cave like room . The door has an acoustic seal and automatic threshold. and acoustic paneling was installed on the walls. The theater features a 9.1 channel surround sound with 6 subwoofers, and a small star ceiling.