Environmental Noise Control

United States

• % Octave Band Center FrequencySTC-32 Transmission Loss
• 63 Hz16 dB
• 80 Hz20 dB

he ENC STC-32 Acoustical Barrier Blankets are manufactured using state of the art acoustical composite materials with an engineered design. ENC’s STC-32 acoustical barrier blankets are designed to provide optimum sound control for both blocking and absorbing unwanted noise. They have been tested by an independent acoustical laboratory per ASTM E-90 and ASTM E-413 requirements and have a verified sound transmission loss. ENC’s acoustical barrier blankets are fabricated with a proprietary polyvinyl-chloride coated outer shell; layers of noise absorbing and blocking material; an engineered inner core with an X-5 septum barrier. About the STC-32 Acoustical Barrier Blanket

• % Octave Band Center FrequencySTC-25 Transmission Loss
• 63 Hz8 dB
• 80 Hz10 dB

Our K-Rail mounted noise barriers can be quickly positioned in place and moved as necessary to provide a flexible noise control solution for mobile equipment or operations. Our newly redesigned double K-Rail frame allows for heights up to 20 feet, depending on site and environmental restrictions. The K-Rail mounted barrier is an effective solution if your project does not allow earth boring. At the heart of our free-standing noise control systems are our ENC noise barrier blankets which are manufactured using state-of-the-art acoustical composite materials. They are available in STC-25, STC-32 with NRC overlays. All of ENC’s acoustical blanket materials have been tested by an independent laboratory. Engineeringcalc packages available.

The ENC Movable Modular Acoustical (MMA) Sound Control Panel system is manufactured using state of the art acoustical composite materials and is designed for quick and simple field installation where an immediate noise control solution is required. Fabricated with a pre-painted steel U-panel outer skin and a specially developed 3.2 #ft2 composite construction barrierabsorber acoustical insulation system, ENC MMA Sound Control Panels are designed to provide optimum performance for both blocking and absorbing unwanted sound for permanent and semi-permanent equipment installations and yet be easily disassembled to facilitate major equipment maintenance.

• % Octave Band Center FrequencySTC-43 Sound Transmission Loss
• 31.5 Hz21 Hz
• 63 Hz14 Hz

ENC’s Freestanding STC-43 panels (SK-8 panels) are fabricated with a galvanized exterior sheet metal skin, an acoustical absorber with septum barrier and a galvanized perforated liner that faces the noise source. These panels are used for low-frequency and heavy duty applications. They can be moved around a project site with a forklift for easy, effective positioning. They are available for purchase or short or long term rental. They can be equipped with doors and emergency egresses. Available in 16’, 20’ and 24’ high modules with an 8’ by 12’ base.