For hearing-protector test
IEC: 60318-1 and 60318-4 depending on configuration
The G.R.A.S. 45CA Hearing-protector Test Fixture is a versatile test fixture for measuring sound isolation of hearing-protectors according to ISO 4869-3 and ear- and headphones according to IEC60318-1 or 60318-4.Learn More
For testing hearing-protectors according to ANSI/ASA S12.42, choose G.R.A.S. 45CB.