MTE Acoustic Wall – Ceiling / Sound Absorbing Cassettes can be used to provide the required
Sound Absorption Coefficient
Noise Reduction Coefficient
Sound absorption should be provided in manned areas via the use of MTE acoustic ceiling system combined with MTE acoustic wall sound absorbing cassettes.
The MTE acoustic systems performance is designated by BS EN ISO 354: 2003 as;
Noise Reduction Coefficient (NRC) = 0.85 Class B Extremely Absorbing
Sound Absorption Coefficient (as) = 0.81 Class B/C Extremely/Highly Absorbent
The sound absorbing cassettes are generally supplied in standard sizes; however they can be supplied sized to suit the structural grid as required by the client in order to minimize site cutting and wastage. The cassettes are formed from perforated steel sheet into a tray however they have an unperforated banding which forms the cassette end framing member.
The rear face of the cassette can be supplied with solid plates, perforated plates or partially open with steel straps to hold the insulation in place whilst providing a ridged cassette panel.
The acoustic system can have the same surface finish as the surrounding non perforated walls. The system insulation is encapsulated in a film membrane to prevent any fibers or dust from being emitted into the environment while protecting the insulation from moisture ingress and maintaining a flame retardant product with the desired sound absorbing qualities / acoustic performance.