Back to Electroacoustic Test Accessories Ear Simulator/Coupler 
ZT-318 Ear simulator/coupler
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Description
ZT-318 Ear Simulator is a type of human ear simulator that simulates the average human ear impedance. When coupled to a sound source, an acoustic impedance load similar to human ears can be loaded onto the sound source.\r\nWith IEC 60318-1-compliant standard design, 1/2'' pressure field measurement microphone (ZT-372) and preamplifier (ZT-508), 318 Ear Simulator is connected to series testers and mainly used to test telephone receivers, headsets, and plug-in headphones, etc.
Specifications
ZT-318 Ear Simulator / Coupled CavityApplicable Standards IEC 60318-1 ITU-T Rec. P.57 Type 1
Frequency range 100Hz～4kHz ±1 dB(stimulating human ear impedance)
Frequency range of coupled cavity 20Hz～16kHz (for coupled cavity)
Height 32mm (including adapter to be connected)
Diameter 60mm
Weight 208g (including adapter to be connected)
Optional ItemsMicrophone ZT-372/332
Preamplifier ZT-508 (IEPE, BNC)
Applications
Headphone testingEarphone measurementAudio quality testing