• Sourcing Solutions
  • Services & Membership
  • Help & Community

Quick Details

  • Model Number: JH-AC
  • Usage: noise testing
  • Power: Electronic
  • Quick Details Place of Origin: Guangdong, China

Packaging & Delivery

Packaging Details Wooden Packing or Customized
Delivery Time 45 days




      Anechoic Chambers are echo-free enclosures with a sound energy absorption level of 99% to 100%, or a reflected soundpressure level of 10% or less. The frequency at which the energy absorption drops below 99%, or the pressure reflectionexceeds 10%, is known as the low-frequency cut-off.







product information 


productGlass fiber cloth acoustic wedge



Used for microphone calibration, electro acoustic instruments and equipment testing, language and auditory acoustic test and research, and determination of the acoustic characteristics of a variety of sound sources (such as acoustic power, frequency, directional)




internal structure by diameter 4 mm or 6 mm bar bending fold welding into shape wedge - shaped reinforced skeleton.




400*400*850mm; 400*400*700; 600*600*550 ,According to customer requirements.


single wedge,double wedges or  customized

Sound insulation volume

The background noise elimination 30-20dB , and even less than 20 dB.



 How to order ? 

   1.Please tell us your Contact information (unit / company name, contact phone / cell phone, email, QQ).

   2.The size of the product specification (pre effective size, can accommodate a maximum size).

   3.Acoustic parameters.

   4.Installation of sound sourceenvironment.

   5.  Indoor background noise requirements.

   6.Main sound source(central air-conditioning, air blower, water pump, vibration equipment).

   7.Other special requirements- effective size.

















Transaction History of the Supplier

Below is the information about the supplier's transactions conducted via Alibaba.com. If you require further details regarding the transaction data, please contact the supplier directly.

Transaction Overview


Transaction Details

This supplier has completedtransactions with buyers from .

Shipping Destination
Transaction Value
Transaction Date
Email to this supplier
China (Mainland) | Manufacturer, Trading Company
Transaction Level:
Supplier Assessments:
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $27,000
Learn More