Wayne Parham Messages: 18853 Registered: January 2001
Illuminati (33rd Degree)
Concrete surfaces on all six sides (4 walls, floor and ceiling) are problematic because there is so little damping. Reflections are strong and room modes are terrible. Even if you tame the high-frequency reflections with absorbent materials, room modes are still strong. Panel absorbers on all walls are generally the only way to cure them.