Sound Attenuators

Rectangular Sound Attenuators. Circular Sound Attenuators. Crosstalk Sound Attenuators.
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Rectangular Sound Attenuators

Rectangular Sound Attenuators are galvanized steel construction high performance, to ensure lowest resistance to airflow in HVAC systems with velocities upto 2000 fpm (10 m/sec.) and at 4" w.g. (lOOOPa) may be installed vertically or horizontally and rated for airflow and leakage DW-144 class C. The standard construction is suitable for a leakage of 0.5%. The square and rectangular type attenuators are designed for handling maximum air capacities at minimum pressure drop. The shell noise radiation is minimized by double skin splitter construction. The turbulence of the airflow is minimized due to the bell nose design of the splitter at the entrance of the air inlet.

Circular Sound Attenuators

Circular Sound Attenuators are galvanized steel construction high performance, to ensure lowest resistance to airflow in HVAC systems with velocities upto 2000 fpm (10m/sec.) and at 4"w.g. (lOOOPa) may be installed vertically or horizontally and rated for airflow and leakage DW-144 class C, The standard construction is suitable for a leakage of 0.5%. The cylindrical type attenuators are designed for handling maximum air capacities at minimum pressure drop. The circular type Sound Attenuators are installed in the duct work between spaces, which must provide noise reduction of air borne noise to at least match the sound transmission loss of the separating structure.

Crosstalk Attenuators

Crosstalk Attenuators are installed within airconditioning or ventilation ductwork systems to reduce the transmission of airborne ducted noise. Attenuators are suitable for terminal equipment, crosstalk applications or attenuated openings in partitions above ceiling voids.

Typical Area for Considerations

  • Common ductwork serving male-female toilets, changing areas, or for privacy between adjacent cellular offices.
  • Penetrations in partitions requiring high acoustic performance.
  • Broadcasting recording studios.
  • Construction

  • Galvanized steel sheet casing with lock formed mastic sealed joints.
  • Internal liners faced with perforated steel sheet.
  • Controlled density mineral wool infill with tissue facing to reduce fiber egress.