SS 771-11

Ultra low noise, 12dBA
The high sensitivity and low noise artificial ear is an ear simulator that simulates the way an earplug catheter is inserted into the ear canal or auricle, and simulates the coupling between the earphone and the human ear to measure the acoustic performance of the earphone. The SS 771-11 is a coupled cavity and preamplifier integrated non-detachable construction, it is a pre-polarized pressure field measurement microphone kit.

Specifications

Parameter	Value
Sound Field Type	Pressure field
Earphone Type	入耳式
Coupler Volume	1.26cc
Frequency Response	20Hz – 8kHz ± 0.5dB 8kHz – 10kHz ± 1dB 10kHz – 16kHz ± 2dB 16kHz – 20kHz ± 3dB
Dynamic Range	12dB（A) - 113dB
Noise Floor	12dB（A）
Sensitivity	250mV (-12dB) ± 2dB re 1V/Pa
Standard	/
Connector	BNC
Operating Temperature	-20°C to 60°C
Relative Humidity	10- 90% no condensation

Specifications

Types of Acoustic Fields	Pressure Field
Polarization voltages	0V（Prepolarized）
Frequency range	20Hz - 8kHz ± 0.5dB 8kHz - 10kHz ± 1dB 10kHz - 16kHz ± 2dB 16kHz - 20kHz ± 3dB
Dynamic range	12dB（A）- 113dB
Background noise	12dB（A）
Sensitivity mV/Pa(dBV/Pa)	250mV (-26.0dB) ± 2dB
Maximum Output Voltage	5.6V
Output Impedance	<50Ω
Power Supply	2mA - 10mA（typical 4mA）
Pressure Equalization Method	Post-equalization
Connection	BNC
Temperature range, operation	-20℃ to 60℃
Temperature range, storage	Temperature：25℃±5℃，Humidity：50%±15%RH（Ensure the long-term stability of the sensor）
Humidity range non condensing	20 - 90% without condensation
Humidity coefficient	<0.1dB