The Kriekelaar Flemish Community Center in Brussels hosts a set of cultural spaces, amongst which a theatre of about 250 seats. This space and the corresponding foyer are completely renewed in order to fit acoustic and security regulations. Through the straightforward use of adapted constructive systems, the project adds a strong identity and a excellent acoustic value to the hall. The variable acoustic and the use a telescopic tribune allows a wide range of activities, from acoustic and amplified concerts to lectures and polyvalent use