
All adjustments to headband position and height as well as the distance between the ear plates can be done quickly and very accurately. Precise scales make it easy to document all settings accurately, be it the headband position, the width between ears, or the position of the positioning guide. Therefore it is easy to set up other 45CCs to mirror the original setup.
Once the test fixture has been adjusted to fit a certain headphone, the design of headband holder, ear plates and the unique positioning system ensures that when testing identical headphones you will get the same positioning and fit from one test to the next. Therefore repeatability in a production line testing environment will be second to none with the 45CC. This makes the 45CC the unrivalled choice for demanding QC and PL applications.
See also the brochure for 45CC.
For your convenience, we have made 45CC available in 8 different pre-configurations. These are:
1/2" Microphones
45CC-1 with Externally Polarized 1/2" Microphones
45CC-2 with Prepolarized 1/2" Microphones
GRAS 45CC Headphone Test Fixture configured with 1/2" externally polarized or prepolarized microphones is primarily intended as a tool for QC and PL testing of headphones. Except for the mounting of the ear plate assemblies, 45CC comes fully assembled and tested from the factory.
Ear Simulators and 1/2" Microphones
45CC-3 with IEC 60318-1 Ear Simulators and Ext. Polarized 1/2" Microphones
45CC-4 with IEC 60318-1 Ear Simulators and Prepolarized 1/2" Microphones
GRAS 45CC Headphone Test Fixture configured with IEC60318-1 ear simulators and 1/2" externally polarized or prepolarized microphones is primarily intended as a tool for QC and PL testing of headphones. Where the acoustical load from an ear simulator is required, the use of the IEC 60318-1 ear simulators also mean that testing according to IEC 60318-1 and ITU-T Recommendations P.57 is possible. Except for the mounting of the ear plate assemblies, 45CC comes fully assembled and tested from the factory.
Mouth Simulator and 1/2" Microphones
45CC-5 with Mouth Simulator and Ext. Polarized 1/2" Microphones
45CC-6 with Mouth Simulator and Prepolarized 1/2" Microphones
GRAS 45CC Headphone Test Fixture configured with 1/2" externally polarized or prepolarized microphones and the GRAS 44AA Mouth Simulator is primarily intended as a tool for QC and PL testing of communication headsets. Except for the mounting of the ear plate assemblies and the mouth simulator, 45CC comes fully assembled and tested from the factory.
Mouth Simulator and Ear Simulators
45CC-7 with Mouth Simulator, IEC 60318-1 Ear Simulators and Ext. Polarized 1/2" Microphones
45CC-8 with Mouth Simulator, IEC 60318-1 Ear Simulators and Prepolarized 1/2" Microphones
GRAS 45CC Headphone Test Fixture configured with IEC60318-1 ear simulators, 1/2" externally polarized or prepolarized microphones and the GRAS 44AA Mouth Simulator is primaril