Sound attenuators permit the passage of air while reducing noise in ventilation systems.

Which sound attenuator do I use?

NCS Acoustics design, manufacture and install many types of attenuators, including; Rectangular, Cylindrical and Specialist. We have standard sizes readily available and are also manufacture to individual requirements. See below for a description of each type and read the brochures for more information or call us and let our expert acoustic engineers provide you with suitable options and a quote.

NCS Acoustics have developed an Attenuator Selection Program, software that helps you to identify the right attenuators for you needs. Covers the NCS, NSM, NCT, NTM ranges, lengths from 600mm to 3600mm. Contact us about this.

Features:

  • Guaranteed to comply with specified performance.
  • Wide range of sizes and many types can be manufactured to individual requirements.
  • Range of construction materials to suit different environments and budgets; Galvanized Steel, Stainless Steel, PVC…
  • Powder-coated or epoxy paint finishes in a range of colours available.
  • Melinex lining for greasy or moist conditions available.

Projects:

  • Wellington Hospital
  • Sky City Casino, Auckland
  • Building 302, University of Auckland
  • Auckland Hospital, Acute Services Building
  • Auckland International Airport
  • Christchurch Justice & Emergency Services Precinct
  • Vero Building

NCS Rectangular Attenuators

NCS Rectangular Attenuators provide optimised acoustic performance for applications where high levels of noise reduction are required or space constraints govern.

download pdf

NSM Rectangular Attenuators

The same as NCS Rectangular Attenuators but with a Melinex lining for hygienic, damp or grease-laden air applications.

download pdf

NCT Rectangular Attenuators

NCT Rectangular Attenuators are aerodynamically streamlined to allow freer airflow (less resistance).

download pdf

NTM Rectangular Attenuators

The same as NCT Rectangular Attenuators but with Melinex lining for hygienic, damp or grease-laden air applications.

download pdf

Industrial Rectangular Attenuators

Our Industrial Rectangular Attenuators are similar to NCT/NCS Rectangular Attenuators but with customised design and a heavier construction for increased durability in harsh or exterior environments.

download pdf

Dairy Rectangular Attenuators

Attenuators designed specifically for the Dairy industry.

download pdf

Curb Rectangular Attenuators

Our Curb Rectangular Attenuators are similar to NCT/NCS Rectangular Attenuators but with a spacer for fan clearances and a flashing for roof exit and weather protection.

Contact us for more information.

download pdf

HVAC Cylindrical Attenuators

For reduction of ventilation and air conditioning system noise in numerous applications. Designed for direct connection to the inlet and outlet of axial flow type fans and can be adapted for induct applications. Melinex lining avaialble  for damp or grease-laden air applications.

download pdf

Industrial Cylindrical Attenuators

Our Industrial Cylindrical Attenuators are similar to HVAC Cylindrical Attenuators but with a heavier construction for increased durability in harsh or exterior environments.

download pdf

AFA150 Compartment Unit

The complete solution for extracting/supplying air, ideal for bathrooms, apartments and hotel rooms. A compact unit with inlet/outlet attenuation and fan, that’s very quiet, easy to install and economical. Patent pending.

download pdf

FCU Attenuator

FCU Attenuators

FCU Attenuators provide optimised acoustic performance for reducing inlet/outlet sound levels from ceiling mounted FCU units where high levels of noise reduction are required and space constraints govern, such as residential and hotel HVAC applications. Client specified spigot sizes for easy connection to FCU unit and ducting. Standard sizes 600mm & 900mm long and custom widths manufactured to individual requirements.

download pdf

Cross Talk Attenuators

Cross Talk Attenuators allow airflow between rooms but provide acoustic isolation for privacy. They come in a range of configurations.

download pdf

Powered Attenuators

Custom designed powered unit, with attenuation and fan to simplify ventilation, prefect for plant rooms.

Contact us for more information.

download pdf