1.  Product application:

Mainly used in noise test and electroacoustic test of motors, mobile phone audio, speakers , headphones and other electronic and electrical products

 2.  Technical parameters:

Sound insulation effect: When the overall noise of the external environment is not more than 75dB and the customer’s central air conditioner is not turned on, the background noise in the box is 40db or 30db or 20db or customized according to requirements;